Aseptico AMC-20CF Troubleshooting guide

AMC-20CF
Mobile Dental System
SERVICE MANUAL
& PARTS LIST

CONTENTS Page
General Service Information . . . . . . . . . . . . . . . . . . . . . . . .1
Inspection & Verification . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Cleaning & Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
DISASSEMBLY
RONT & SIDE PANELS REMOVAL . . . . . . . . . . . . . . . . . . . .4
AUTO TRANS ORMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
ISOLATION TRANS ORMER . . . . . . . . . . . . . . . . . . . . . . . . . .4
VACUUM VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
THREE-WAY SOLENOID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
RELIE VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
AIR TANK CHECK VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
PRESSURE SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
AIR TANK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
RIGHT VENTURI ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . .6
LE T VENTURI ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
COMPRESSOR MOTOR ASSEMBLY . . . . . . . . . . . . . . . . . . . .7
MOTOR MOUNTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
ISOLATED HIGH-VOLTAGE TERMINAL BLOCK . . . . . . . .8
WASTE PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
COOLING AN TERMINAL BLOCK . . . . . . . . . . . . . . . . . . . .8
INNER COOLING AN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
WASTE PUMP CONTROL VALVE . . . . . . . . . . . . . . . . . . . . . . .8
WASTE SENSOR CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . .9
AEU-5000 POWER BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
VACUUM RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
WASTE RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
110V TERMINAL BLOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
NEUTRAL TERMINAL BLOCK . . . . . . . . . . . . . . . . . . . . . . . .10
220V TERMINAL BLOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
24V ISOLATION TERMINAL BLOCK . . . . . . . . . . . . . . . . . . .10
AIR INPUT ILTER HOLDER . . . . . . . . . . . . . . . . . . . . . . . . .10
POWER INPUT CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . .10
VOLTAGE SELECTOR SWITCH . . . . . . . . . . . . . . . . . . . . . . .11
CIRCUIT BREAKERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
AIR TANK RELEASE VALVE . . . . . . . . . . . . . . . . . . . . . . . . . .11
WASTE OUTLET QUICK DISCONNECT ITTING . . . . . .11
WASTE PUMP POWER SWITCH . . . . . . . . . . . . . . . . . . . . . . .12
220V ACCESSORY OUTLETS . . . . . . . . . . . . . . . . . . . . . . . . . .12
110V ACCESSORY OUTLET . . . . . . . . . . . . . . . . . . . . . . . . . . .12
REAR COOLING AN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
WASTE COMPARTMENT LATCH . . . . . . . . . . . . . . . . . . . . . .12
WASTE COMPARTMENT DOOR . . . . . . . . . . . . . . . . . . . . . . .13
WASTE TANK SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
SALIVA TUBE CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . .13
WASTE PUMP DISCONNECT . . . . . . . . . . . . . . . . . . . . . . . . . .14
HIGH VACUUM QUICK DISCONNECT . . . . . . . . . . . . . . . .14
VACUUM RETURN ITTING . . . . . . . . . . . . . . . . . . . . . . . . .14
SPLASH SHIELD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
AEU-5000 ELECTRIC MOTOR . . . . . . . . . . . . . . . . . . . . . . . . .14
SCALER ADJUSTMENT POTENTIOMETER . . . . . . . . . . . .14
SCALER WAND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
PNEUMATIC HANDPIECE IBER-OPTIC TUBING . . . . .15
CURING LIGHT TUBING . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
OOT PEDAL AND TUBING . . . . . . . . . . . . . . . . . . . . . . . . . .16
SYRINGE AND SYRINGE TUBING . . . . . . . . . . . . . . . . . . . .16
AUXILLARY WATER & AIR QUICK DISCONNECTS . . . .16
HANDPIECE PRESSURE GAUGE . . . . . . . . . . . . . . . . . . . . .16
SYRINGE LOW ADJUSTMENT BLOCK . . . . . . . . . . . . . . .16
SYSTEM CONTROL VALVES . . . . . . . . . . . . . . . . . . . . . . . . . .17
CHECK VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
35 PSI IXED REGULATOR . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Page i
SCALER CONTROL MODULE . . . . . . . . . . . . . . . . . . . . . . . .17
IBER OPTICS MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
QUIN HANDPIECE BLOCK . . . . . . . . . . . . . . . . . . . . . . . . . . .18
MANI OLD 4-PORT ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . .18
AIR PILOT VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
SHUTTLE VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
SYSTEM PRESSURE GAUGE . . . . . . . . . . . . . . . . . . . . . . . . . .19
VACUUM SWITCHES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
SCALER SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
CENTRAL VACUUM CANISTER . . . . . . . . . . . . . . . . . . . . . .19
ILTER/REGULATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
AMALGAM MANI OLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
WASTE LINE CHECK VALVE . . . . . . . . . . . . . . . . . . . . . . . . . .20
WATER ILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
WATER BOTTLE CAP COUPLINGS . . . . . . . . . . . . . . . . . . . .20
TOP LID LOCKING HINGE . . . . . . . . . . . . . . . . . . . . . . . . . . .20
TOP LID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
INSTRUMENT HOLDERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
ARM ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
CASTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
TUBING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
PA TS LISTS
Figure A – Final Assembly . . . . . . . . . . . . . . . . . . . . . . .22-34
Figure B – Accessory ray Assy . . . . . . . . . . . . . . . . . . . . . .35
Figure C – Left Side Panel Assy . . . . . . . . . . . . . . . . . . . . .35
Figure D – Right Side Panel Assy . . . . . . . . . . . . . . . . . . . .36
Figure E – Front Panel Assy . . . . . . . . . . . . . . . . . . . . . . . .36
Figure F – AEU-5000 Mount Assy . . . . . . . . . . . . . . . . . . .37
Figure G – Vacuum Valve Assy . . . . . . . . . . . . . . . . . . . . . .37
Figure H – Relief Valve Assy . . . . . . . . . . . . . . . . . . . . . . . .38
Figure I – Air ank Assy . . . . . . . . . . . . . . . . . . . . . . . . . .38
Figure J – Right-Hand Venturi Assy . . . . . . . . . . . . . . . . . .39
Figure K – Left-Hand Venturi Assy . . . . . . . . . . . . . . . . . . .39
Figure L – Vacuum ube Assy . . . . . . . . . . . . . . . . . . . . . .39
Figure M – Compressor Motor Assy . . . . . . . . . . . . . . . . . .40
Figure N – Pump & Bracket Assy . . . . . . . . . . . . . . . . . . . .40
Figure O – Middle Shelf Assy . . . . . . . . . . . . . . . . . . . . . . .41
Figure P – Middle Shelf Insulation Assy . . . . . . . . . . . . . .41
Figure Q – Rear Panel Assy . . . . . . . . . . . . . . . . . . . . . . . . .42
Figure – Power Outlet Assy . . . . . . . . . . . . . . . . . . . . . . .42
Figure S – Power Inlet Assy . . . . . . . . . . . . . . . . . . . . . . . .43
Figure T – Waste ank Assy . . . . . . . . . . . . . . . . . . . . . . . .43
Figure U – Noise Baffle Assy . . . . . . . . . . . . . . . . . . . . . . . .44
Figure V – Sound Wall Assy . . . . . . . . . . . . . . . . . . . . . . . .44
Figure W – Waste Shield Assy . . . . . . . . . . . . . . . . . . . . . . .45
Figure X – Bulkhead Assy . . . . . . . . . . . . . . . . . . . . . . . . . .45
Figure Y – Syringe Block Assy . . . . . . . . . . . . . . . . . . . . . .46
Figure Z – Pedal Handpiece Block Assy . . . . . . . . . . . . . .46
Figure A-A – Manifold 4-Port Assy . . . . . . . . . . . . . . . . . . .46
Figure A-B – Quin Auto Block Assy . . . . . . . . . . . . . . . . . .47
Figure A-C - Arms Assy . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
STE ILIZATION & MAINTENANCE . . . . . . . . . . . .48-49
T OUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . .50
FINAL INSPECTION & TESTING . . . . . . . . . . . . . . . . .51
EQUI ED TOOLS LIST . . . . . . . . . . . . . . . . . . . . . . . . .52
SYMBOL DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . .52
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
WA ANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover
TABLE OF CONTENTS
Page

and marked "System Pressure".
The AMC-20C System uses a single compressor motor with
a split head. The split head provides pressure on one side and
vacuum on the other. The vacuum side uses venturi boosters
to increase the vacuum. The compressor is controlled by a
pressure sensor located on the tank. The sensor activates the
compressor air pressure whenever the air reservoir needs to
be recharged. The recharge starts when the pressure in the
air reservoir drops to approximately 80 PSI, and it stops when
the reservoir be-comes fully charged at a factory preset of
approximately 110
PSI.
All the handpiece,
curing light, scaler,
and vacuum instru-
ment holders are
air-activated hold-
ers. If the High
Vacuum Ejector
(HVE) or low volume saliva ejector instruments ( ig. 4) are
removed from their holders (or if they aren't properly seated
in their holders), the compressor will run continuously, even
when the air reservoir and System pressure are fully pressur-
ized. This is because the air from the pressure side of the
compressor is diverted through a valve to a venturi, which
increases the vacuum. When the pressure in the air reservoir
drops to approximately 80 PSI, the air is diverted back to the
reservoir and recharges it until its pressure reaches the 110
PSI preset. If the HVE and saliva ejector instruments are
seated in their holders properly but the compressor fails to
turn off, turn the unit's power switch O and check for air
leaks in the System. If the System pressure gauge is showing
pressure, the leaking sound should be detectable. Use your
ear, or place a tube to your ear like a stethoscope, to locate
the source of the leak. If a leak can't be heard from any air
lines or fittings, check the water bottles for tightness and the
condition of their seals.
Air/Water Syrin e
Check the 3-Way Air/Water Syringe ( ig. 4) by depressing the
air and water syringe buttons individually then both simulta-
neously for spray. A Syringe Air/Water low Adjustment
Block is located under the top Lid, behind the divider wall,
beside the Scaler Module.
GENERAL SERVICE INFORMATION
This service and parts manual offers information and parts
lists not available in the AMC-20C Operation and
Maintenance Instruction Manual. It will help you better
understand the operation of the AMC-20C Mobile Dental
System, thereby reducing service time. A Schematic Diagram
Set includes assembly drawings with individual part numbers,
plumbing diagrams, and electrical schematics. The plumbing
and electrical diagrams show all air, water, and wiring com-
ponents as installed in the unit. Individual parts are also list-
ed and referenced to igures with callouts in the Parts Lists.
A Detachable Parts List is also included. Use the information
in the Parts Lists when ordering replacement parts.
INSPECTION & OPERATION VERIFICATION
To verify that the AMC-20C unit is functioning properly,
first follow the Setup procedure in the Operation and
Maintenance Manual. The System is designed to operate
from 110V or 220V 50/60Hz power. A manually operated
switch ( ig. 1), located above the
power inlet cord, allows the user to
select the proper voltage. The
System is protected by three sets of
circuit breakers: 20 Amp for 110V,
10 Amp for 220V, and 1 Amp for the
isolated voltage circuits.
Toggle the Bottle Pressure Release
Toggle switch, located on the right-
hand side of the unit ( ig. 3), to the ON position. Toggle the
Air Tank Pressure Toggle switch, located on the bottom-left
rear of the unit, to the ON position. Turn the Main Power
Switch, located on the top-right rear of the unit, to the ON
position. The electric-motor control panel should light up
and the compressor pump should fill the air reservoir and
water bottles. With the compressor pump engaged, the air
reservoir should pressurize to a factory preset of approx-
imately 110 PSI (7.58 bar) and the System should pressurize
to a preset of 80 PSI (5.5 bar). The 80 PSI system pressure is
regulated by the regulator/filter ( ig. 2), which is located
under the top lid,
near the right rear
side. The System
pressure is indicat-
ed on the circular
pressure gauge,
which is also locat-
ed under the top lid
Page 1
Figure 1
Use Tool To
Toggle Switch
Figure 2
RAISE KNOB
THEN ROTATE
TO ADJUST PRESSURE
Figure 4
SYRIN E
SALIVA
EJECTOR
HI H VACUUM
(HVE)
Figure 3 COOLANT AIR TO LE
COOLANT AIR CONTROL VALVE
FLUSH TO LE
BOTTLE PRESSURE
RELEASE TO LE
BOTTLE SELECTOR TO LE
COOLANT
FOR SCALER
COOLANT FOR
AIR HANDPC #2
COOLANT FOR
AIR HANDPC #1
COOLANT FOR
ELECTRIC HANDPC

Page 2
Water Filters
Inspect the water filters ( ig. 5) on the
ends of the water pick-up tubes that
protrude into the two water bottles. If
the water filters become clogged and
restrict the water flow, they need to be
replaced. CAUTION: Do not run
saline solutions through the water sys-
tem -- saline will corrode the water filters.
Air Filters
The air pressure side of the compres-
sor uses a dual-filtered air intake can-
ister ( ig. 6) located on the back side
of the unit. It is located behind a rec-
tangular cover that attaches to the unit
with four captive screws. Three pri-
mary filters are on the outer perimeter
of the canister. The secondary filter is
located inside the canister and can be accessed for cleaning
or replacement by removing two Phillips head screws on the
canister cap. Both the primary and secondary filters should
be replaced if they become clogged and restrict air flow.
Vacuum System
To check the function of the
vacuum system, first allow
the System to reach full
pressure. Check the solids
trap to ensure that it is clear
of debris. Check that the
large tube to the waste tank
is fully seated in the fitting
and all the other tubes are
properly connected to the tank. Ensure that the waste sensor
( ig. 7) is plugged into the connector on the unit. The System
will not activate the compressor if this connection is not acti-
vated. ill a container with one liter of water. Turn the valve
on the low vacuum saliva ejector instrument to the O posi-
tion and submerge the HVE instrument into the container. It
should take approximately 6 seconds to extract the liter of
water from the container using the HVE. Refill the liter of
water and turn the HVE instrument O and the saliva ejec-
tor to ON, then submerge the saliva ejector instrument into
the container. It should take approximately 42 seconds to
remove one liter of water using the saliva ejector. NOTE: If
the System is pressurizing the air tank, a drop in this vacuum
will appear due to the pressure side of the compressor disen-
gaging the booster vacuum venturi.
Instruments
To check the func-
tions of the high-
speed handpieces,
curing light, scaler,
and electric motor,
remove each instru-
ment from their
respective holders
one at a time, start-
ing with handpiece #1, which is located on the right-hand
end of the left arm ( ig. 8). All of the handpieces plus the
curing light and scaler are activated by the air-driven oot
Control.
Pneumatic Handpieces (2 Qty):
With handpiece #1 removed from its holder, activate the
oot Control and check the handpiece pressure on the gauge
located on the front panel marked "Handpiece Pressure".
Adjust the hand-
piece pressure to
the proper setting
by adjusting the
right-hand black
knob on the control
block located under
the top Lid ( ig. 9).
IMPORTANT: Adjust to the pressure recommended by the
handpiece manufacturer. NOTE: The handpiece pressure
gauge on the front panel will be approximately 3 PSI higher
than a gauge installed at the end of the line, between the fit-
ting and the handpiece. Toggle the coolant air toggle switch
located on the right side of the unit to the ON position.
Adjust the coolant air control valve (located next to the
coolant air toggle switch - ig. 3) and feel for air coming out
of the handpiece. The water toggle switch located on the
oot Control activates the water through the control module.
Toggle the water to ON ( ig.
10) and adjust the handpiece
water coolant valve, marked
"HP1" on the right side of
the unit ( ig. 3), for proper
spray. Ensure that the light
in the handpiece turns on
when the oot Control is
depressed and turns off
approximately 10 seconds after the oot Control is released.
Place the #1 handpiece back into its holder and remove the
second high-speed handpiece from its holder. Repeat the
previous procedures for this second handpiece, but adjust the
second black knob from the right on the control block ( ig.
9) for proper pressure and adjust the "HP2" handpiece
coolant valve ( ig. 3). When set up properly, replace the sec-
ond high-speed handpiece into its holder.
Curing Light:
Remove the Curing Light from its holder ( ig. 8). Toggle the
water valve on the oot Control to the O position.
Activate the foot pedal and adjust the instrument pressure to
20 PSI with the fourth black knob from the right on the con-
trol block ( ig. 9). Replace the curing light into its holder.
IMPORTANT: Avoid looking directly into the curing light.
Ensure that darkened eyeware is worn prior to activating the
foot pedal.
Scaler:
Remove the Scaler from its holder ( ig. 8). Toggle the water
switch on the oot Control to the ON position. Depress the
foot pedal and adjust the left (5th from the right) black knob
on the control block to approximately 20 PSI. Adjust the
water valve "HP4" located on the right side of the unit until
the Scaler flow is no less than 20 ml/min at the tip. Check the
Figure 7
Sensor
Figure 8 PNEUMATIC
HANDPIECE
CONTROLS
(#2 and #1)
ELECTRIC
HANDPIECE
CONTROL
SCALER
CURIN
LI HT
Figure 9 FLOW ADJUSTMENT SCREWS (5)
WATER
OFF
WATER
ON
Figure 10
Figure 5
Filter
Primary Filters
Figure 6

Page 3
intensity of the Scaler by turning the ultrasonic intensity
adjustment knob located on the upper left side of the front
cover. Replace the Scaler into its holder.
Electric Handpiece (1):
Remove the Electric handpiece from its holder ( ig. 8).
Depress the oot Control pedal and adjust the middle black
knob on the control block ( ig. 9) to read 30 to 45 PSI max.
on the gauge. Adjust the "HP3" water valve on the right side
of the unit ( ig. 3) to control water flow to the electric hand-
piece. Return the electric handpiece to its holder.
Handpiece Flush Toggle:
To check the handpiece flush toggle switch, which is located
on the right-hand side of the unit ( ig. 3), remove a high-
speed handpiece and toggle the switch to the ON position.
Ensure that water flows through the line.
Waste System:
To check the waste pump, use the HVE instrument to vacu-
um a liter of water to the
waste container. Place the
HVE back into its holder.
Connect the waste hose to
the waste discharge on the
back of the unit by inserting
the waste hose elbow until it
locks into place ( ig. 11).
Switch on the waste purge
pump to empty the waste
system. While emptying,
check that the blue control
valve located in the waste
compartment ( ig. 12) works
properly by manually turning
the valve clockwise to
decrease flow of the liquid
and counterclockwise to
increase flow. Ensure that the
waste tank empties, then
switch off the waste purge
pump. To disconnect the
waste hose, depress the but-
ton on top of the waste dis-
charge and pull out the waste
hose elbow ( ig. 11). NOTE:
The waste hose must be con-
nected to the waste discharge to enable pump switch opera-
tion.
C
D
A
B
Electrical System:
The power outlet receptacles and applied parts are controlled
by an isolation transformer tied to the 1-Amp circuit break-
ers. If the rear receptacles, scaler, curing light, or electrical
motor fail to operate, check these 1-Amp breakers. After the
voltage selector switch is set to the proper power input, sys-
tem voltage is controlled internally in the unit with a step-
down/up transformer. This circuit is protected by 20-Amp cir-
cuit breakers for 110V and 10-Amp for 220V.
Cleanin and Lubrication
When servicing the AMC-20C Mobile Dental System, the
parts of any component disassembled should be thoroughly
cleaned and inspected before reassembly. A hot detergent
solution is an effective cleaner on all non-electrical parts.
lush all non-electrical parts with clear, hot water. Abrasive
cleaners have the potential to damage surface finishes and
should be avoided. Any wiping should be done with a soft lint-
free cloth.
Electrical parts should be cleaned with an appropriate elec-
trical parts cleaner or air.
CAUTION: Use only NON-foaming cleansers in the vaccum
lines.
Use a silicone base lubricating grease, such as Parker Super
O-Lube, PN 490006, to lubricate O-rings and seals in the sys-
tem. Before performing any reassembly of parts that contain
O-rings or seals, apply a light coat of silicone grease. This will
make installation easier and prevent the O-rings or seals from
being damaged.
WATER LINES - Disinfect the water lines weekly. Prepare
a 1:10 bleach solution (1 part household bleach to 10 parts
water). Purge all water lines (see page 48, Purging Water From
the System). ill water bottles with bleach solution. Run
bleach solution through all lines. Allow bleach solution to
stand in lines for 10 minutes but no longer: Immediately
remove water bottles and discard the bleach, then flush water
bottles and all lines thoroughly with clean water. Purge all
water lines with air and leave dry until next clinical use.
Adhesives
Refer to included Schematic Drawing Set, PN 420872, for
proper identification and application of all adhesives. Part
numbers for adhesives are also listed at the end of the inal
Assembly Parts List on page34, as Not Shown (NS) items.
Waste Flow
Adjustment Valve
Figure 12
CAUTION:
Do not run saline solutions through the water sys-
tem -- saline will corrode the water filters.
Figure 11
C
A
B
D

Page 4
looping the instrument hosing through the bulkhead access
opening, swing the right edge of the panel away from the
chassis approximately 90°. This will open up the front of the
chassis, providing adequate working access to the front of the
unit.
AUTO T ANSFO ME
The auto transformer (PN 800117) is the larger of the two
transformers on the front of the chassis base ( ig. 16).
Disconnect the three wires running to the three terminal
blocks located on the left side of the middle shelf. Remove
the four mounting screws (PN 510477) and lock washers (PN
510508) on the transformer with a 5/32" Allen wrench.
Reassemble the transformer in the reverse order. Refer to
electrical schematic for proper termination.
ISOLATION T ANSFO ME
The isolation transformer (PN 800118) is the smaller of the
two transformers on the chassis base ( ig. 16). Disconnect
the wires going to the transformer, at the transformer.
Remove the four mounting screws (PN 510312) and lock
washers (PN 510421) on the transformer with a 1/8" Allen
wrench.
Reassemble the transformer in the reverse order. Refer to
electrical schematic for proper termination.
VACUUM VALVE
The vacuum valve is located on the chassis base, between the
isolation transformer and the compressor ( ig. 17). Remove
the gray tubing (PN 730373) and the clear tube (PN AA-94C)
from the valve, at the
valve. Remove the
mounting screw (PN
510506) from the under-
side of the base with a
3/32" Allen wrench. (The
screw is located near the
center of the base, just
forward of the front
motor mounts.)
Reassemble the vacuum valve in the reverse order. Take care
DISASSEMBLY
NOTE: Most of the plumbing for the AMC-20C System is
accessible by lifting the top lid and latching it in the upright
position. The power supplies, compressor, waste pump and
miscellaneous items are accessible by removing the front and
side panels. Power inlets and most of the power outlets are
accessible by removing the two panels in the rear of the unit.
F ONT & SIDE PANELS EMOVAL
Remove accessory tray, arm, and post from the top lid. Lift
the top lid and lock it open ( ig. 13). Remove the single
screws (PN 510477) located on the bottoms of the left-hand
and right-hand side
panels with a 3/32"
Allen wrench. Remove
the four bolts (PN:
510693) attaching the
large blue handles (PN
330540) to each side
panel with a 3/16 Allen
wrench. Remove both
handles. Remove the
water bottles (PN
730631-01) and their
tops from the right-side
panel ( ig. 14).
Remove both side
panel assemblies.
Swing the instrument
arms away from the front panel. Remove the four screws (PN
510404) from the top
and sides of the front
panel, and the two
screws (PN 510506)
from the bottom front
( ig. 15) of the panel
with a 3/32" Allen
wrench. Carefully pull
the front panel straight
out approximately 1". Reach behind the panel and disconnect
the 4-pin white connector from the electric motor display
assembly and then continue to pull the panel out until fully
detached. The front panel can be removed, if necessary, by
running all of the tubing through the manifold access slot, but
typically this isn't nec-
essary to gain access
inside the front of the
unit. Alternatively, the
front panel can be piv-
oted out of the way, to
the left side of the unit,
without detaching any
additional wiring or
tubing: while carefully
Figure 13
Figure 16
Auto Transformer Isolation Transformer
Handle Mounting Bolts (8)
Figure 14 Water
Bottle
Caps
(2)
Water
Bottles
(2)
Front Panel
Bottom Mounting Screws (2)
Figure 15
Vacuum Valve
Figure 17 Clear Tube

Page 5
not to kink the vacuum lines. If a vacuum line is kinked,
replace it to prevent later collapse of the line.
VACUUM VALVE EPAI
The vacuum valve ( ig. 17) can be repaired by removing the
four screws (PN 510036) on the top with a 5/64" Allen
wrench, and replacing the three inner O-rings (PN 520078).
Reassemble the valve in reverse order. Lightly apply some O-
ring grease to the O-rings when reassembling.
TH EE-WAY SOLENOID
The three-way solenoid (PN 730591) is located under the
right side of the middle
shelf, directly behind the
air tank ( ig. 18). ollow
the black wire from the
solenoid to the terminal
block on the middle shelf
that terminates all the
black wires ( ig. 19).
Disconnect the black wire
from this block. ollow the
other black wire to the
waste relay (PN 800116) on
the middle shelf, located to
the left of the air tank.
Disconnect this wire from
the waste relay. Remove
the two tubes (PN 730130)
to the solenoid with a 7/16" open-end wrench. Remove the
two mounting screws (PN 510506) with a 3/32" Allen wrench.
Pull the wires through the grommet in the middle shelf and
remove the solenoid valve.
If replacing the solenoid, remove the fittings from the old
valve and mount onto the new solenoid. Attach the new sole-
noid to the middle shelf and run the wires through the grom-
met. Cut and trim one black wire to the waste relay and
attach to the relay with a female terminal (PN 860240).
Attach the other black wire to the terminal block with a ring
terminal (PN 860004).
ELIEF VALVE
The relief valve is
attached to the bot-
tom of the middle
shelf, on the left
front side, directly
above the auto
transformer ( ig.
20). Remove the
sleeve clamp (PN
730015) and tube
(PN AA-94C) at the
bottom of the valve with needle-nose pliers. Remove the tube
(PN 730130) on the side with a 7/16" open-end wrench.
Remove the mounting screw (PN 510506) from the top of the
middle shelf with a 3/32" Allen wrench. Note that the valve
can be repaired using the same procedure as previously
described for the vacuum valve.
Reassemble the relief valve in the reverse order.
AI TANK CHECK VALVE
The air tank check valve
(PN 730257) is the large fit-
ting with a tee located on
the side of the tank near the
bottom ( ig. 21). Remove
the two tubes (PN 730130)
to the tee (PN 730119) with
a 7/16" open-end wrench.
Remove the large tube (PN
730256) from the compres-
sor with a 13/16" open-end
wrench. Remove the tee from the check valve with a 11/32"
open-end wrench. Remove the check valve with a 7/8-inch
open-end wrench.
Replace components in the reverse order. Ensure that the
large tube from the compressor still has the internal sleeve
clamp (PN 730261) attached to the inside-diameter of the
tube.
P ESSU E SWITCH
The pressure switch
(PN 830133) is the
large black box located
on the side of the air
tank, near the top ( ig.
22). Disconnect the
green/yellow ground
cable from the upper
fan cover (PN 461864)
with a 11/32" open-end
wrench. Disconnect the
three white wires going
to the waste relay and
vacuum relay.
Disconnect the black wire going to the terminal block locat-
ed on the front side of the upper fan cover with a #2 Phillips
screwdriver. ollow the remaining white wire to the neutral
terminal block (the block that terminates the white wires)
located on the left side of the middle shelf and remove with
a #2 Phillips screwdriver. Remove the pressure switch from
the brass nipple (PN 730233) with a 9/16" open-end wrench
on the nipple and a ¾" open-end wrench on the switch if the
switch is a urnas brand. If the switch is a Le oo brand, use
a 22mm wrench on the switch. Loosen the mounting screw on
Figure 20
Relief Valve
Terminal
Block
Figure 18
Figure 21
Check
Valve
Figure 22
Relays
Pressure
Switch
Terminal
Block
Figure 19
Solenoid

Page 6
the pressure switch cover with a Phillips screwdriver and
remove cover. Remove the wires from the switch with a #2
Phillips screwdriver and place on the new switch per the elec-
trical schematic. Leaving the cover off, install the new switch
onto the tank and reconnect the wire per the electrical
schematic. Open the top lid on the unit, raise the knob on the
pressure regulator (PN 730598), and then rotate the knob
clockwise to full open. This will allow the user to observe the
system pressure gauge on the top shelf while setting the pres-
sure. Power up the unit. CAUTION: The terminal blocks and
connecting wires are live when the unit is powered up. Refer
to the label inside the pressure switch cover to adjust the cut-
out and cut-in pressure screws. Adjust the cut-out pressure to
110 PSI and cut-in to approximately 80/90 PSI. Readjust the
pressure regulator back to approximately 80 PSI. Reattach
the pressure switch cover. There is also a tank-pressure port
available just below the pressure switch where a gauge can be
installed and used to observe the system pressure: Remove
the port plug (PN 730098) with a ¼" Allen wrench and install
a ¼ NPT pressure gauge of appropriate range. Turn the unit
off and remove the power cord.
AI TANK
Remove the drain line (PN AA-
95G) from the bottom of the
tank ( ig. 23) with a 7/16" open-
end wrench. Remove the two
lines going to the tee on the
check valve ( ig. 24) with a 7/16"
open-end wrench. Remove the
large tube from the check valve
with a 13/16" open-end wrench.
Remove the tube next to the
pressure switch with a 7/16"
open-end wrench ( ig. 25).
ollow the wires from the pres-
sure switch to the waste and vac-
uum relays and remove. ollow
the black wire from the pressure
switch to the terminal block and
remove with a #2 Phillips screw-
driver. ollow the long white
wire to the neutral terminal
block and remove with a #2
Phillips screwdriver. Loosen the
caster under the tank with two
¾" wrenches until the nut is held
onto the caster with minimal
threading. Open the top lid on
the unit and lock in the raised
position. Swing the instrument arms to the left side of the
unit. Remove the two screws (PN 510404) attaching the right-
hand vertical angle (PN 461665) with a 3/32" Allen wrench.
Undo the three clamps (PN 510514) around the tank with a
5/16" socket or a standard screwdriver. Use a 5/32" Allen
wrench to remove the two screws (PN 510477) on both sides
of the angle that attach the upright bracket (PN 461665) to
the chassis. Lift slightly on the top shelf to tilt the upright
away from the unit. Remove the tank. Remove all of the com-
ponents from the old tank and replace onto the new tank. or
tools required, see instructions for the tank components.
Reassemble the air tank in the reverse order
IGHT VENTU I ASSEMBLY
Remove the two mounting
screws (PN 510404) from
under the chassis with a 3/32"
Allen wrench. Remove the vac-
uum tube (PN 730373) from
the vacuum valve assembly
( ig. 26). Remove the pressure
line (PN 730130) to the venturi
(PN 461851) with a 7/16" open-
end wrench. To remove the
venturi from the bracket (PN
461897), remove the two
screws (PN 510309) from the
bracket with a 3/32-inch Allen wrench. If the venturi is
plugged, it is possible to repair it by removing the elbow fit-
ting (PN 730351) from the venturi nozzle (PN 461852) with a
7/16" open-end wrench on the nozzle and a 9/16" open-end
wrench on the elbow fitting. Then remove the nozzle from the
venturi body with a 7/16" wrench for the nozzle and a ¾"
wrench for the body. Then clean out the orifice in the nozzle
using a drill with a 0.048" diameter bit. Ensure that the orifice
is clear with no chips or burs, which will affect performance.
Reassemble the right venturi assembly in the reverse order.
LEFT VENTU I ASSEMBLY
Remove the vacuum tube (PN
730373) coming from the ‘Y’
fitting on the vacuum tube
assembly ( ig. 27). Remove
the pressure line (PN 730130)
with a 7/16" open-end wrench.
Using a pair of needle nose pli-
ers, remove the sleeve clamp
(PN 730015) and clear tube
(PN AA-94C) coming from the
relief valve assembly. Remove
the two screws (PN 510309) holding the venturi body (PN
461851) to the bracket (PN 461869) with a 3/32" Allen
wrench. To repair the venturi, remove the barb fitting (PN
730062) and gasket (PN 730074) from the elbow fitting (PN
730351-01) with a ¼" wrench. Then, follow the same proce-
dure shown above for the right venturi to remove the elbow
and nozzle, and to clean out the orifice in the nozzle.
Figure 23
Tank Drain
Line
Figure 24
Check Valve
Tee
Figure 25
Relays
Tube
Figure 26
Pressure
Line
Venturi
Muffler
Vacuum
Tube
Figure 27
Pressure
Line
Clear
Tube
Vacuum
Tube
Right
Venturi
Muffler
DISASSEMBLY - Continued

Page 7
Reassemble the left venturi assembly in the reverse order.
VENTU I MUFFLE
Grasp the venturi assembly and unscrew muffler (PN
330564) from venturi body, either by hand or with a pair of
channel locks.
Replace by screwing muffler on, hand tight.
COMP ESSO MOTO ASSEMBLY
On the pressure end of
the motor ( ig.28), dis-
connect the two large
black tubes (PN
730256) by pressing on
the locking ring on
each fitting (PN
730638) and pulling
out the tubes. Note
that the pressure end
of the compressor is
the end with the power
cable connection. On
the vacuum end ( ig.
29), disconnect the
large black tube (PN
730256) going to the
large fitting (PN
730638) on the vacuum
tube assembly by push-
ing on the ring and
pulling on the tube. At
the vacuum end, dis-
connect the small tube
(PN 730130) at the
smaller fitting (PN
730638) with a 7/16"
open-end wrench.
Disconnect the motor green/yellow ground wire on the lower
front vertical (by the large transformer) with an 11/32"
wrench. ollow the white wire from the motor to the waste
relay and disconnect terminal from relay. ollow the black
wire to the 110 VAC terminal block (the block that termi-
nates all the black wires - ig. 19) on the middle shelf and dis-
connect the ring terminal with a #2 screwdriver. Cut all the
cable ties that secure the motor wires and then gather all the
motor wires with the compressor on the bottom shelf.
Remove the four bolts (PN 510704) and washers (PN
510508) at the ends of the compressor mounting plate with a
7/16" wrench. Remove the motor, with mounting plates, from
the chassis.
COMP ESSO EPLACEMENT
On the old compressor (PN 720024-01), remove the four plugs
(PN 730637) on the inboard ports of the two heads with a 5/16"
Allen wrench
and attach the
plugs to the new
compressor ( ig.
30). Remove the
two large fittings
(PN 730360) on
the pressure end
head of the old
compressor with
a 5/8" open-end
wrench and
attach to the
new compressor
with the same
orientation. Note that the pressure end of the compressor is
the end with the power cable connection. Remove the large fit-
ting from the vacuum end with a 5/8" open-end wrench and the
small fitting (PN 730638) with a ½" open-end wrench, and
place both fittings on the new compressor with the same ori-
entation. To remove the upper & bottom plate subassembly
( ig. 31), turn the compressor over onto its heads and remove
the four screws (PN 510503) with a 3/32" Allen wrench.
MOTO MOUNTS
Remove the com-
pressor as described
previously. Remove
the screws (PN
510702) that attach
the plate (PN 461898)
to the mounts with a
3/16" Allen wrench ( ig. 32). Remove the screws (PN
510352), washers (PN 510107), and nuts (PN 510126) that
attach the mounts (PN 730314) and pads (PN 461929) to the
chassis base with two ½" wrenches.
Replace motor mounts in the reverse order.
Figure 30 Plugs
Vacuum
End
Pressure
End
Figure 28
Locking Ring
Motor Pressure End
Figure 29
Motor Vacuum End
Mounting Plate
Vacuum Tube Assy
Figure 31
Figure 32
Mounts
(Pads u der eath)
Motor
Mounting Plate
Upper & Bottom
Plate
Subassembly
Subassembly
Mounting
Screws (4)

Page 8
ISOLATED HIGH-VOLTAGE TE MINAL BLOCK
This terminal block
(PN 860256) is located
on the lower right side
of the chassis base,
under the pressure
end of the compressor
( ig. 33). Remove all
the wires going to the
terminal block with a #2 Phillips screwdriver. Remove the
two mounting nuts (PN 510395) with a 5/16" open-end
wrench, then remove block and insulator (PN 461971). Note
positions of the 3-position and 2-position jumpers (PNs
860253 & 860254 respectively), then remove jumpers from
the old terminal block and attach to the new block.
Reassemble the terminal block in the reverse order, referring
to the electrical schematic for proper installation.
WASTE PUMP
Remove the green/yellow ground wire from the pump (PN
730271) with a ¼"
wrench ( ig. 34). On
the back side of the
cart, remove the eight
screws (PN 510160)
that attach the power
outlet assembly with a
5/64" Allen wrench.
ollow the white (PN
870031) and black (PN
870026) wires from the
pump to the white
rocker switch (PN
830108) on the power
outlet assembly ( ig.
35). On the black wire,
there is a large section
covered by heat shrink
that encloses a wire con-
nector ( ig. 36). Peel this
heat shrink back, on the
pump side of the connec-
tor, and discon-nect the
female terminal. ollow
the other white wire to
the rocker switch and remove the terminal at that location.
Cut the cable ties that secure the tubing to the pump ends
and remove both clear tubes (PN 730288) from the pump.
Leave the reducers (PN 730627) attached to the tubes.
Remove the four mounting screws (PN 510404) from the
pump with a 3/32" Allen wrench. Carefully feed the pump
wires through the grommet in the middle shelf and remove
the pump.
Reassemble the waste pump in the reverse order, referring to
the electrical schematic for the proper installation.
COOLING FAN TE MINAL BLOCK
The cooling fan terminal block (PN 860255) is located on the
vertical wall of the pump support bracket (PN 461864) ( ig.
37). Remove the wires
going to the terminal block
with a #2 Phillips screw-
driver. Note position of
jumper (PN 860254) and
remove from block.
Remove the terminal
block and insulator (PN
461973) with a 5/64" Allen
wrench. Attach jumper to
the new block.
Reassemble in the reverse order, referring to the electrical
schematic for proper installation.
INNE COOLING FAN
The inner cooling fan (PN 540012) is located on the middle
shelf ( ig. 38). ollow the white and black wires from the fan
to the terminal blocks on
the left side of the shelf
and remove from block
with a #2 Phillips screw-
driver. Remove the four
screws (PN 510160) hold-
ing the fan with a 5/64"
Allen wrench. Remove
fan.
Reassemble fan in the reverse order with the air flow indica-
tor on the fan pointing downward. Refer to the electrical
schematic for proper installation.
WASTE PUMP CONT OL VALVE
This pump control valve
(PN 730609) is located on
the inboard wall of the
waste container shield (PN
461742), above the inner
cooling fan ( ig. 39).
Remove the two tubes (PN 730312) going to the valve by
pushing in on the white rings and pulling the tubes out of the
valve. Remove the two retaining clamps (PN 510686) with an
11/32" wrench.
Replace control valve in the reverse order.
ND Wire
Waste Pump
Jumper
Figure 34
Figure 37
DISASSEMBLY - Continued
Figure 33
3-Pos Jumper 2-Pos Jumper
Figure 36
Figure 35
Rocker
Switch
Wire
Connector
(U der
Heatshri k)
Figure 38
Fan
Terminal
Block
Figure 39
Locking Ring

Page 9
WASTE SENSO CONNECTO
The waste sensor connec-
tor (PN 860080) is located
on the inboard side of the
waste shield ( ig. 40),
above the large vacuum
tube (PN 730608). ollow
the two wires (PNs 870026
& 870031) going to the
terminal block (PN
860241) under the upper
shelf ( ig. 41) and remove
wires with a #2 Phillips
screwdriver. Remove the
nut on the inboard side of
the connector with a 9/16" wrench and then pull the connec-
tor out through the outboard side of the waste shield, from
the waste compartment.
Reassemble the waste sensor connector in the reverse order.
Refer to electrical schematic for proper installation.
AEU-5000 POWE BOA D
The AEU-5000 power
PCB board (PN 330565-
C) is located on the left
inboard side of the waste
shield ( ig. 42).
Disconnect the cables
going to the board.
Remove the sleeve clamp
(PN 461607) and tube (PN
730227) going to the
board with a pair of nee-
dle-nose pliers. Remove
the board mounting screw
with a #2 Phillips screw-
driver.
Reassemble power board
in the reverse order, refer-
ring to electrical and
plumbing schematics for proper installation. IMPO TANT:
The AEU-5000 power PCB board is not a user-serviceable
component of the AMC-20C system and should be
returned to Aseptico if repairs are necessary.
AEU-5000 POWE SUPPLY
The AEU-5000 power supply (PN 330570) is located direct-
ly above the AEU-5000 power board ( ig. 42). Disconnect
the three-pin connector with the red and black wire at the
power board. Cut the cable tie going to the other tie that
wraps around the power cord and remove the power cord
from the supply. Cut the remaining cable ties around the
power supply and remove the supply from its Velcro pad.
Remove the two cable tie pieces from their cable-tie holders
and replace with new ties.
Reassemble power supply in the reverse order.
AEU-5000 POWE CO D
Cut the cable tie at
the power supply as
described above
and remove the
power cord plug
( ig. 43). ollow
the black and white
wires from the
power cord to their
respective terminal
blocks on the mid-
dle shelf and
remove wires with a #2 Phillips screwdriver. ollow the solid-
green ground wire down to the ground stud on the chassis'
front left vertical and remove wire with an 11/32" wrench.
Pull the ground wire up through the grommet on the middle
shelf and remove power cord.
Reassemble the power cord in the reverse order, referring to
the electrical schematic for proper installation.
VACUUM ELAY
The vacuum relay (PN 800116) is the relay on the middle
shelf that has four wires connecting to it and is closest to the
air tank ( ig. 44). Remove
the female wire connectors
to the relay. Remove one
of the mounting screws
(PN 510404) with a 3/32"
Allen wrench and only
loosen the other. Slide the
relay from under the loose
screw and remove relay.
Reassemble the vacuum relay in the reverse order. Refer to
the electrical schematic for proper installation.
WASTE ELAY
The waste relay (PN 800116) is next to the vacuum relay on
the middle shelf and has six wires connecting to it ( ig. 44).
Remove the female wire connectors from the relay. Remove
one of the screws (PN 510404) with a 3/32" Allen wrench and
loosen the other screw. Slide the relay from under the loose
screw and remove relay.
Reassemble the waste relay in the reverse order. Refer to the
electrical schematic for proper installation.
Tube & Clamp
Terminal
Blocks
Power
Cord
Figure 42
Figure 43
Figure 40
Nut
Sensor
Figure 41
Sensor
Wires
Terminal Block
Power
Supply
Mtg.
Screw
3-Pin
Conn.
ND Wire
Figure 44
Waste
Relay
Vacuum
Relay

two 3-position jumpers (PN 860253) with a #2 Phillips screw-
driver. Remove the two mounting screws (PN 510720) with a
5/64" Allen wrench and remove block.
Reassemble the terminal block in the reverse order. Refer to
the electrical schematic for proper installation.
AI INPUT FILTE HOLDE
The air input filter holder
(PN 461909) is located
behind the louvered cover
(PN 461784) on the bot-
tom of the rear panel ( ig.
49). Remove the four cap-
tive screws (PN 510715),
retainers (PN 510714), and
the louvered cover (PN
461784) from the rear
panel assembly. Unscrew
the three small primary fil-
ters (PN 730571) from the
holder housing (PN
461909) ( ig. 50). Remove
the two Phillips head
screws (PN 510191) from the cover (PN 461910) to access the
inner secondary filter (PN 730382).
Reassemble the filter holder in the reverse order.
POWE INPUT CONNECTO
The power input connector
(PN 840100) is located on
the power inlet assembly
plate, on the right side of
the rear panel ( ig. 51).
Remove the six screws (PN
510160) holding the
assembly plate with a 5/64"
Allen wrench. Pull the
assembly plate away from
the rear panel and remove
the three female wire ter-
minals that connect the
black, white, and
green/yellow wires to the
inlet ( ig. 52). Remove
retaining clip (PN 860269-01) and mounting hardware.
Remove the two mounting screws (PN 510016) with a 1/16"
Allen wrench, and then remove connector.
Reassemble the power input connector in the reverse order,
referring to the electrical schematic for proper installation.
110V TE MINAL BLOCK
The 110V terminal block
(PN 860241) is the five-
position block with the
black wires located on the
left side of the middle shelf
( ig. 45). Disconnect all
wires and the 5-position
jumper (PN 860245) with a
#2 Phillips screwdriver.
Remove the two mounting screws (PN 510720) with a 5/64"
Allen wrench and remove block.
Reassemble the terminal block in the reverse order. Refer to
the electrical schematic for proper installation.
NEUT AL TE MINAL BLOCK
The neutral terminal block
(PN 860241) is the five-
position block with the
white and blue wires locat-
ed on the left side of the
middle shelf ( ig. 46).
Disconnect all wires and
the 5-position jumper (PN
860245) with a #2 Phillips
screwdriver. Remove the two mounting screws (PN 510720)
with a 5/64" Allen wrench and remove block.
Reassemble the terminal block in the reverse order. Refer to
the electrical schematic for proper installation.
220V TE MINAL BLOCK
The 220V terminal block
(PN 860255) is the two-
position block on the left
side of the middle shelf
with the brown and red
wires ( ig. 47). Disconnect
all wires and the 2-position
jumper (PN 860254) with a
#2 Phillips screwdriver.
Remove the two mounting screws (PN 510720) with a 5/64-
inch Allen wrench and remove block.
Reassemble the terminal block in the reverse order. Refer to
the electrical schematic for proper installation.
24V ISOLATION TE MINAL BLOCK
The 24V isolation terminal
block (PN 860243) is the
six-position block located
at the center front of the
middle shelf ( ig. 48).
Remove all wires and the
Page 10
Secondary
Filter
220V
Block
Primary
Filters
(3)
Housing Cover
Figure 47
Figure 50
DISASSEMBLY - Continued
Figure 45
110V
Block
Figure 46 Neutral Block
Jumpers
Figure 48
2-Pos Jumper
24V
Block
Louvered
Cover
Figure 49
Housing
Figure 51
Power
Input
Connector
Figure 52
Power
Input
Connector
5-Pos Jumper

er is being replaced. Depress the retaining clips on the
inboard side of the circuit breaker and push the breaker out
through the front of the plate.
Reassemble the circuit breakers in the reverse order.
AI TANK ELEASE VALVE
The air tank release valve (PN 730010) is the toggle valve
located on the bottom of the power outlet assembly plate, on
the rear panel ( ig. 57). Remove the eight screws (PN
510160) holding the power outlet assembly plate with a 5/64"
Allen wrench. Pull the assembly plate away from the rear
panel. Remove the sleeve clamps (PN 730095) and tubing
(PN AA-95G) from their
fittings. Use two 9/16"
open-end wrenches to
remove the toggle valve
from the assembly plate.
To reassemble the release
valve, remove the fittings
from the old valve with a
¼" open-end wrench and
attach to the new valve.
Take care not to over-
tighten the plastic fittings.
Remove the outboard nut
from the toggle valve and
turn the other nut inward
until it is close to the body
of the valve. Insert the
valve through the plate
from the inboard side with the lock washer resting against the
back side of the plate. Reattach the front nut onto the valve
from the front side of the plate and run it up the threads until
just slightly beyond the end of the valve. Use a thin 9/16"
open-end wrench to turn the nut snugly against the back side
of the plate while holding the valve body with a 9/16-inch
wrench. Ensure that the toggle is set in a horizontal working
position.
WASTE OUTLET QUICK DISCONNECT FITTING
The waste outlet quick disconnect (PN 730352) is located
directly above the air tank release valve on the rear power
outlet assembly plate ( ig 57). Remove the eight screws (PN
510160) holding the power outlet assembly plate with a 5/64"
Allen wrench. Pull the assembly plate away from the rear
panel. Remove the tube (PN 730312) from the rear of the fit-
ting, then remove the quick-disconnect with a 13/16" wrench.
Reassemble the quick disconnect in the reverse order with
the release button positioned on the top side. Ensure that the
notch on the gasket and quick-disconnect are in alignment
with the notch in the power outlet assembly plate.
VOLTAGE SELECTO SWITCH
The voltage selector switch (PN 830136) is located on the
power inlet assembly plate,
above the power input con-
nector ( ig 53). Remove
the six screws (PN 510160)
holding the assembly plate
with a 5/64" Allen wrench.
Pull the assembly plate
away from the rear panel
and remove all six female
wire terminals at the switch
( ig. 54). Remove the two
nuts (PN 510394) holding
the retaining bracket (PN
461772) with a ¼" open-
end wrench. Remove the
switch from the bracket by
depressing the retaining
clips on the switch. Remove the clear plastic voltage selector
shield (PN 461773).
When reassembling the voltage switch, ensure that the label
(PN 420615-08) is mounted onto the switch. Then, place the
switch into the bracket with the 110V indicator towards the
top of the bracket, which is the side with the hole, rather than
the slot. Mount the bracket on the assembly plate with the
hole and the 110V indicator towards the top of the plate.
Wire the switch per the electrical schematic. With power dis-
connected, place the switch into the 110V position and check
the continuity of the wires, then place the switch into the
220V position and check the continuity again. Reassemble
the plate.
CI CUIT B EAKE S
The circuit breakers are located on the power inlet assembly
plate, above the voltage
selector switch ( ig. 55).
Remove the six screws (PN
510160) holding the assem-
bly plate with a 5/64" Allen
wrench. Pull the assembly
plate away from the rear
panel assembly. Remove
the two female wire termi-
nals at each breaker that is
being replaced. Note that
the 10-amp circuit break-
ers (PN 830123) and 20-
amp breakers (PN 830122)
are attached with retaining
rings, whereas the 1-amp
breakers (PN 830138) are
not. Remove the retaining ring if a 10-amp or 20-amp break-
Page 11
Figure 55
Figure 53
Figure 54
Voltage Selector Switch
Retaining Bracket
Clear
Plastic
Shield
Label
Figure 56 Retaining
Rings
Tank Release Valve Quick
Disconnect
Figure 57
Figure 58
Waste
Quick Disconnect
Tank Release Valve
Release
Button

the eight screws (PN 510106)
holding the power outlet assembly
plate with a 5/64" Allen wrench
and pull the assembly away from
the rear panel. Remove the front
cover (PN 850071) to the outlet
with a standard flat-head screw-
driver. Remove the two screws
(PN 510160) holding the outlet
with a 5/64" Allen wrench. Locate
the two wire retaining screws ( ig.
64) and loosen with a #2 Phillips
screwdriver until the two wires
(PN 870308) can be removed.
Remove the green ground screw
with a #2 Phillips screwdriver or a
5/16" wrench.
Reassemble the outlet in the
reverse order. Refer to the electri-
cal schematic for proper installation.
EA COOLING FAN
The rear cooling fan (PN 540012) is located in the rear panel
assembly, below the waste compartment door ( ig. 65).
Remove the four screws (PN 510691) holding the rear panel
with a #2 Phillips
screwdriver. Tilt the
power input side of
the rear panel out-
ward to access the
wires going to the cir-
cuit breakers. At the circuit
breakers, disconnect only
the eight female connectors
from the eight wires coming
from within the unit (it is
not necessary to remove the
four wires coming from the
voltage selector). Swing the rear panel out farther to access
the white 2-position connector block (PN 860244) located on
the noise baffle assembly. At this connector, remove the two
wires from the fan. Remove the four locking nuts (PN
510411) and screws (PN 510506) from the fan with a 3/32"
Allen wrench and an 11/32" wrench. Remove the fan shield
(540009) and fan.
Reassemble the cooling fan in the reverse order with the air
flow indicator on the fan pointing toward the outside of the
unit.
WASTE COMPA TMENT LATCH
The waste compartment latch (PN 510678) is mounted onto
the waste compartment door, which is located on the upper
WASTE PUMP POWE SWITCH
The waste pump power switch (PN 830108) is the white rock-
er switch located next to the waste quick-disconnect fitting on
the power outlet assembly plate ( ig.
59). Remove the eight screws (PN
510160) ) holding the power outlet
assembly plate with a 5/64" Allen
wrench and pull the power outlet
assembly plate away from the rear
panel. Remove the four female wire
terminals from the rear of
the switch ( ig. 60).
Depress the retaining tabs
on the inboard sides of the
switch and push the switch
out through the front of
the plate. Place the new
switch into the rectangular opening in the plate from the
front side of the assembly plate. Ensure that the Off side of
the switch (marked with a dot outside the circle) is properly
oriented with the PUMP O nomenclature on the plate.
Reassemble the pump power switch in the reverse order and
refer to the electrical schematic for proper installation.
220 VOLT ACCESSO Y OUTLETS
The 220 volt outlets (PN 840106) are the two European style
outlets located in the center of the power outlet assembly
plate ( ig. 61). Remove the eight
screws (PN 510106) holding the
power outlet assembly plate with a
5/64" Allen wrench and pull the
assembly away from the rear
panel. The outlets are comprised
of two parts ( ig. 62): To remove
the rear part, unscrew the center
screw from the front side with a
#1 Phillips screwdriver and pull
the back part out of the socket
from the rear. Remove the wiring
(PN 870309) to the rear part of
the outlet with a #2 Phillips
screwdriver. Use a 1/16" Allen
wrench to remove the front part of
the outlet.
Reassemble the outlets in the
reverse order, referring to the
electrical schematic for the proper
installation.
110V ACCESSO Y OUTLET
The 110V accessory outlet (PN 840105) is located in the rear
of the unit, on the power outlet assembly ( ig. 63). Remove
Page 12
DISASSEMBLY - Continued
Figure 59
Retaining
Tab
Figure 60
Back
Part
Center Mtg.
Screw
Figure 61
Figure 62
Front
Part
round
Screw
Figure 63
Figure 64
Fan
Wires
Figure 66
Figure 65
Rear
Panel
Noise
Baffle
Assy

WASTE TANK SENSO
Open the waste
compartment door
in the rear of the
unit to access the
waste tank ( ig. 71).
Disconnect the sen-
sor (PN 330555)
wire connector from
the jack (PN
860080) located on
the waste compart-
ment wall. Disconnect and
remove the front bungee
cord. Disconnect the waste
pump tubing from the
small white quick discon-
nect by pressing on the
metal locking ring.
Disconnect the large high-
vacuum tube from the gray
quick-disconnect (PN
730354-08) by pressing on
the large plastic ring.
Disconnect the saliva ejec-
tor tubing from the small
black quick discon-nect by
rotating the tube connec-
tor counterclock-wise and
pulling it out of the quick-
disconnect. Disconnect
the large vacuum-return
tube (PN 730608) by push-
ing the ring on the large white nut then pulling the waste tank
assembly off the end of the tube adapter (PN 461872).
Remove the waste tank assembly from the unit. Remove the
lid from the waste container (PN 730229-06) ( ig. 72). Use a
¾" open-end wrench on the sensor spacer under the lid and a
27mm wrench to remove the nut (PN 840015) on top of the
lid. Carefully pull sensor assembly (PN 330555) through the
hole in lid, from the underside.
Reassemble the sensor in the reverse order, ensuring that the
gasket (PN 461011) is on the underside of the lid.
SALIVA TUBE CONNECTO
The saliva tube connector (PN 730491) is the small black fit-
ting in the top of the waste tank ( ig. 73). Remove with a ½"
box-end wrench.
Reassemble with some RTV on the threads and wipe clean.
rear of the unit. Open
the door and remove
the large nut on the
rear of the latch with a
1-1/16" open-end
wrench. Slip the large
nut and lockwasher
off the end of the latch, then from the front side, carefully
remove the remaining latch mechanism through the hole in
the door.
Reassemble the latch in the reverse order.
WASTE TUBE HANGE
The waste tube hanger (PN 500326) is mounted onto the
waste compartment door,
which is located on the
upper rear of the unit.
Remove the two screws
(PN 510160) with a 5/64"
Allen wrench and remove
hanger.
Reassemble the hanger in the reverse order.
WASTE COMPA TMENT DOO
The waste compartment
door (PN 461776) is locat-
ed on the upper rear of the
unit. Open the door and
remove the four nuts (PN
510395) with a 5/16"
wrench. Remove the door
latch and waste tube hang-
er as described previously
and place onto the new
door.
Reassemble the door in the
reverse order.
WASTE COMPA TMENT DOO HINGE
Open the waste compart-
ment door and remove the
three screws (PN 510404)
from the right side of door
with a 5/64" Allen wrench
( ig. 70). Remove hinge
(PN 461791). If necessary,
remove other door compo-
nents as described previ-
ously and reassemble in the
reverse order.
Page 13
Door
Hinge
Figure 70
Figure 67 Mtg.
Nut &
Washer
Rear Door Latch
Figure 68
Figure 69
Door
Mtg.
Nuts
(4)
Hinge
Mtg.
Screws
(3)
Sensor Connector
Bungee Cord
Figure 71
Vacuum Tube
Waste Pump Tube
Saliva Ejector Tube
Vacuum Return Tube
Figure 72 Sensor asket
Sensor
Assy
Splash
Shield
Figure 73
Saliva
Tube
Connector
High
Vacuum
Quick
Disconnect
Waste Pump
Quick
Disconnect
Vacuum
Return
Fitting

tor ( ig. 42). Cut the cable
ties holding the receptacle
wire bundle to the other
wires. Remove the four
screws (PN 510650) hold-
ing the receptacle housing
to the front panel ( ig. 75)
with a #2 Phillips screw-
driver. Pull the housing
from the front panel and
slide out the motor recep-
tacle from the rear of the
housing. Remove the
sleeve clamps and tubing
going to the receptacle.
Pull the wire harness and
connector through the hole in the front panel .
Reassemble the motor receptacle in the reverse order, ensur-
ing that the dimple marker on the receptacle is positioned
toward the front of the housing. Reattach the 8-pin connec-
tor to the electric motor power board and bundle the recep-
tacle wiring with the other wires using a cable tie. Ensure that
the electric motor interface cable is attached to the electric
motor display board before attaching the front panel.
AEU-5000 ELECT IC MOTO DISPLAY PANEL
Remove the front panel from the unit as previously
described. Remove the four screws (PN 510650) from the
inboard side of the elec-
tric motor display panel
( ig. 77) with a #2
Phillips screwdriver and
remove panel sub-
assembly. IMPO -
TANT: The electric
motor display sub-
assembly is not a user-serviceable component of the AMC-
20C system and should be returned to Aseptico if repairs
are necessary.
SCALE ADJUSTMENT POTENTIOMETE
The scaler potentiometer (part of PN 730500) is located on
the front panel, between the electric motor receptacle and
the electric motor control panel. Loosen the small setscrew
on the side of the potentiometer
knob with a 1/32" Allen wrench and
remove knob ( ig. 78). Remove the
front panel as previously described.
Remove the three wires going from
the potentiometer ( ig. 79) to the
white 3-position connector (PN
860250) located on top of the
WASTE PUMP QUICK DISCONNECT
The waste pump quick-disconnect (PN 730516) is the white
fitting with the metal locking ring ( ig. 73). Remove the nut
on the underside of the waste tank lid with a 13/16" wrench.
Pull the fitting out through the top of the lid. Remove the
waste tube (PN AA-86G) and gasket (PN 461011).
Reassemble the quick disconnect, gasket, and tube in the
reverse order.
HIGH VACUUM QUICK DISCONNECT
The high vacuum quick-disconnect (PN 730354-08) is the
large gray fitting with the plastic locking ring ( ig. 73).
Remove the nut on the underside of the waste tank lid by
hand or channel locks. Pull the fitting out through the top of
the lid. Remove the gasket.
Reassemble quick-disconnect with the gasket, aligning the
notch on the tank lid to the notches on the gasket and fitting.
VACUUM ETU N FITTING
The vacuum return fitting (PN 730599-01) is the large white
elbow fitting on the top of the tank lid ( ig. 73). Remove the
nut from the underside of lid. Remove the elbow and spacer
(PN 461819) from the lid. Remove excess RTV from the lid.
When reassembling the fitting, ensure that the spacer is
under the fitting then reapply some RTV to the threads on
the underside of the lid. Attach the nut and orientate the fit-
ting approximately centered between the waste sensor and
the high vacuum fitting. Ensure that the top nut is not over-
tightened to allow for the inner ring to move.
SPLASH SHIELD
The splash shield (PN 461879) is on the underside of the
waste tank lid ( ig. 72). Remove the nut to the high-vacuum
fitting and pull the shield off.
Reassemble the shield in the reverse order, ensuring that the
high vacuum fitting and gasket are aligned with the notch on
the lid.
AEU-5000 ELECT IC MOTO ECEPTACLE
The electric motor receptacle (PN 330557) is on the upper
left side of the front panel, beneath the small protruding
housing (PN 461886) ( ig.
74). Remove the cart's
front, left, and right side
panels as previously
described. ollow the
wiring from the motor
receptacle to the 8-pin con-
nector on the electric
motor power board and
remove the 8-pin connec-
Page 14
DISASSEMBLY - Continued
Figure 74
Figure 75
Figure 76 Housing
Receptacle
Figure 77
Dimple
Figure 78
Setscrew

line. Trim the ground wire to the proper length and crimp on
a #8 ring terminal. Wrap the cable tie around the scaler cord,
just above the bulkhead grommet. Ensure that the tie is not
over-tightened and does not restrict the flow of water. Attach
the yellow anchor line to the hold-down screw. Attach the
white and black wires from the wand to the matching colored
wires on the two-position terminal block. Check to ensure
that scaler water flow is appropriate before reattaching the
front panel.
PNEUMATIC HANDPIECE FIBE -OPTIC TUBING
The two sets of gray tubing (PN AA-19A-04T6) carrying the
fiber-optic wires for the two pneumatic handpiece adapters
are located on the bulkhead, behind the front panel. When
viewed from the front of the unit, the two tubing sets are
positioned under the right-hand side of the pedal/handpiece
manifold ( ig. 83).
Cut the four cable
ties holding the
front tubing splices
to their fittings and
disconnect splices.
Remove the four
sleeve clamps (PN
730015) from the
other four tubing
splices and disconnect the
splices from their fittings.
At the 4-position white
connector (PN 860250)
located on the bottom side
of the manifold ( ig. 84),
remove the black and
white fiber-optic wires
from the connector.
To reassemble the pneumatic handpiece tubing, place the two
handpiece adapters in their holders on the left-hand arm
assembly and trim the supply hoses to their proper length so
they are suspended off the floor. Splice the ends of the two
tubes as before and attach the spliced ends to their appro-pri-
ate fittings on the pedal/handpiece manifold with cable ties
and/or sleeve clamps. Strip and tin the ends of the black and
white fiber-optic wires before reattaching them to the white
connector on the bottom side of the bulkhead. Refer to elec-
trical schematic for proper installation.
CU ING LIGHT TUBING
The curing light tubing (PN 730625) is located on the bulk-
head, behind the front panel. When viewed from the front of
the unit, the tubing is the third tube from the right-hand side,
underneath the pedal/handpiece manifold ( ig. 83). Cut the
two cable ties holding the two tubing splices to their fittings
and remove the tube from the manifold.
bulkhead. Remove the nut on the
outboard side of the front panel with
a ½" socket. rom the inboard side,
remove potentiometer through the
hole in the panel.
Reassemble the scaler poten-tiome-
ter in the reverse order with the lock
washer positioned against the
inboard side of the front panel and
the alignment pin on the poten-
tiometer keyed into the hole in the
cover. At the white connector on the
bulkhead, color-match the three
potentiometer wires to the brown,
red, and orange wires in the connec-
tor. Ensure that the electric motor
interface cable is attached to the electric motor display board
before attaching the front panel.
SCALE WAND
The scaler wand (part of PN 730500) is attached through the
bulkhead, behind the front panel. Remove the front cover as
previously described and pull cover forward to access the top
of the bulkhead. Remove the ground wire mounting screw
(PN 510404) from the side panel on the bulkhead ( ig. 81)
with a 3/32" Allen wrench. Remove the black and white scaler
wires going to
the white 2-
position con-
nector block
(PN 860244)
on the bulk-
head. Cut the
cable tie
around the
scaler cord,
located just
above the grommet.
Remove the scaler tube
anchor line from the
hold-down screw (PN
510435) with a 5/32"
Allen wrench. On the
upper shelf, disconnect
the clear tube going
from the scaler wand tube to the scaler coolant valve, at the
valve (the fourth valve from the right when viewed from the
inboard side - ig. 82). rom the bottom of the bulkhead,
remove the scaler wand cord down through the grommet.
Remove scaler wand.
Reassemble the scaler wand in the reverse order, adjusting
the length of the wand cord to hang suspended off the floor
and then trimming the excess cord sleeve clamp and/or water
Page 15
Figure 79
Figure 80
Bulkhead
round
Wire
Figure 81
Figure 82
Scaler Coolant Tube
Connector
Block
Anchor
Line
Cable
Tie
Hold-Down Screw
Pedal/Handpiece Manifold
Pneumatic Handpiece Tubing
Figure 83
Figure 84 Fiber Optic
Wires
Curing
Light
Tubing

the end of the tube
as before and attach
to the syringe block
with two sleeve
clamps. Verify that
air comes out the
syringe when the air
button is depressed and that water sprays out when the water
button is depressed.
AUXILIA Y WATE & AI QUICK DISCONNECTS
The air and water quick disconnects (PN 730033) are locat-
ed behind the front cover, on the far left and right ends,
respec-tively, of the bulkhead ( ig. 89). Remove the front
panel and pull toward the front to access the retaining nuts
to the quick disconnect fittings. Disconnect the tube (PN
AA-94B) to
the water
fitting (PN
730011) and
the tube
(PN AA-
95G) to the
air fitting
(PN 730073). Remove the quick disconnects with two 9/16"
wrenches.
Reassemble the quick disconnects in the reverse order. When
reinstalling the front panel, ensure that the electrical connec-
tion to the display board and scaler potentiometer are still
intact.
HANDPIECE P ESSU E GAUGE
The handpiece pressure gauge (PN 730132) is located behind
the front panel on the right side, above the air tank ( ig. 90).
Remove the sleeve (PN 730015), tube (PN AA-94C), fitting
(PN 730062), and nylon gasket (PN 730074) going to the back
of the gauge. Remove the locknuts (PN 510394) holding the
gauge to the bracket (PN 461741) with a ¼" open-end
wrench.
Reassemble handpiece
pressure gauge in the
reverse order.
SY INGE FLOW
ADJUSTMENT BLOCK
The syringe flow adjust-
ment block (PN 730022) is located on the upper shelf, on the
right side, behind the divider wall ( ig. 91). Move the instru-
ment arms to the left side of the unit. Remove the sleeve
clamps (PN 730015) holding the blue
Remove the black and white fiber optic wires from the white
connector (PN 860244) under the manifold ( ig. 85).
To reassemble the curing
light tube, place the tub-
ing head in its instrument
holder on the left-hand
arm assembly and trim the
tubing and wires so they
hang suspended off the
floor. Splice the end of the
tube as before and attach
the spliced ends to their respective fittings. Strip and tin the
end of the black and white fiber-optic wires before reattach-
ing to the white connector. Refer to the electrical schematic
for the proper connections.
FOOT PEDAL AND TUBING
The tubing for the foot pedal (PN AA-43W) is attached to
the rear center of the bulkhead behind the front panel. When
viewed from the front of the unit, the tubing connects under-
neath the pedal/handpiece manifold, behind the handpiece
tubing and curing light tubing ( ig. 86). Remove the two
sleeve clamps (PN 730095) from the large tubes and the two
sleeve clamps (PN 730015) from the small tubes and discon-
nect the foot-
pedal tubing
from the fit-
tings on the
pedal/ hand-
piece manifold.
Remove foot
pedal.
Reassemble foot pedal and tubing in the reverse order.
SY INGE AND SY INGE TUBING
To replace the syringe (PN TA-90D), remove it from its hold-
er and unscrew the bottom handle from the head assembly to
access the tubing connections ( ig. 87). Remove the two
sleeve clamps (PN 730015) and disconnect the tube (PN AA-
85G) from the head. The other end of the tube is attached to
the syringe block
under the right side
of the bulkhead ( ig.
88). Remove the two
sleeve clamps (PN
730015) from the
tube splices and
remove syringe.
To reassemble, cut approximately 66" of the syringe tubing
and attach to the syringe with sleeve clamps. Place the syringe
in its holder on the right-hand arm assembly and adjust the
length of the tubing so that it suspends off the floor. Splice
Page 16
DISASSEMBLY - Continued
Figure 85
Fiber
Optic
Wires
Figure 86
Foot Pedal Tubing
Figure 87
Tubing
Sleeve Clamps
(2)
Handle
Figure 88
Syringe
Block
Syringe
Tubing
Water
Quick
Disconnect
Air
Quick
Disconnect
Figure 89
Figure 90
Bracket
auge

closed and attach the knob with the setscrew, allowing some
clearance between the knob and body. Ensure that the knob
does not bottom out against the valve.
CHECK VALVE
The check valve (PN 730012) is located on the upper shelf, in
line between the bottle-select toggle and the 4-port manifold
( ig. 95). Remove the
sleeve clamps (PN
730015) and tubes (PN
AA-94B) and remove
the valve.
Reinstall check valve
in the reverse order .
Ensure that the flow
direction is toward the
manifold.
35 PSI FIXED EGULATO
This regulator (PN 730521) is located on the upper shelf, in
line between the manifold and bottle-pressure On/Off toggle
( ig. 96). Remove the
sleeve clamps (PN
730015) and tubing
(PN AA-94C).
Replace regulator,
ensuring that the air
direction arrow is
pointing towards the
toggle valve.
SCALE CONT OL MODULE
The scaler control module (PN 730500) is located on the
right side of the upper
shelf, behind the
divider wall ( ig. 97).
Remove the two
screws (PN 510530)
from under the chassis
with a #1 Phillips
screwdriver. Lift the module and
slide back the top cover on the
module to remove the electrical
connector to the module ( ig.
98).
Reassemble the control module
in the reverse order.
(PN AA-94B) and clear
(PN AA-94C) tubes to
the fittings, then remove
the tubes. Remove the
flow adjustment block
mounting screw (PN
510404) on the out-
board side of the divider
wall with a 3/32” Allen
wrench ( ig. 92). Pull
the adjustment block up
and remove the two blue and clear tubes to the block.
Replace label (PN 420748-07) if necessary.
Reassemble the syringe flow adjustment block in the reverse
order.
SYSTEM CONT OL VALVES
The system control valves are on the upper shelf, on the right
side of the unit ( ig. 93). They consist of two types of valves:
needle-type adjustment
valves and toggle-type on/off
valves ( ig. 94). Remove the
tubing to all valves being
replaced. Remove all elbow
fittings (PN 730011), straight
fittings (PN 730062), and
nylon gaskets (PN 730074)
from valve bodies if neces-
sary. To replace a needle
valve, first loosen the
setscrew on the adjustment
knob (PN 850012) with a
1/16" Allen wrench, then
remove knob. or all
valves and toggles, use a
9/16" open-end wrench
to remove outboard nut
from the chassis wall.
Pull needle and toggle
valve bodies through
the holes in the chassis wall, from the inboard side.
To reassemble a needle or toggle valve, first remove the
mounting nut from the outboard end of the valve and turn
the inboard nut toward the body of the valve slightly. Then,
place the valve through the chassis hole from the inboard side
with the lock washer placed against the inboard side of the
chassis wall. Install the mounting nut onto the outboard end
of the valve and run the nut up just a couple threads from the
outboard end. Tighten the valve in place by holding the body
and tightening the inboard nut against the chassis wall with a
thin 9/16" open-end wrench. On toggle valves, ensure that the
toggle is in its proper orientation with the nomenclature on
the side panel. On needle valves, adjust the needle to fully
Page 17
Check Valve
Figure 93
Figure 95
Figure 91
Adjustment
Block
Figure 92
Figure 94
Needle Valve Toggle Valve
Setscrew
FLOW
Manifold
Regulator
Figure 96
Flow Direction
Arrow
Bottle Pressure
On/Off Toggle
Figure 97
Scaler Control
Module
Figure 98 Electrical
Connector
Block Mounting
Screw

screw (PN 510404) from
the bracket (PN 510256)
to the block with a 1/8"
Allen wrench. Remove
all the sleeve clamps
(PNs 730015 & 730095)
and tubes from the
block. Remove bracket
and mounting screws
(PN 510404) with a 3/32"
Allen wrench if neces-
sary.
Reassemble the quin handpiece block in the reverse order,
referring to the plumbing schematic for proper installation.
Adjust the handpieces to their proper pressures.
MANIFOLD 4-PO T ASSEMBLY
The manifold 4-port assembly is located on the upper shelf,
near the right side of the quin block ( ig. 102). Remove all
sleeve clamps and tubes from the assembly block. Remove
mounting screw (PN
510423). Replace assem-
bly if necessary.
AI PILOT VALVE
The air pilot valve (PN
730019) is located on the upper shelf, near the right rear cor-
ner of the quin block ( ig. 103). Disconnect the sleeve clamps
(PN 730015), the blue tubes (PN AA-94B) and the clear tube
(PN AA-94C) going to
the valve. Use two 9/16"
wrenches to remove the
mounting nut from the
valve then remove the
valve from the bracket
(PN 730245). Remove
the two fittings (PN
730062) and nylon gas-
kets (PN 730074) from
the valve.
Reassemble the pilot valve in the reverse order, attaching the
fittings to the new valve. Refer to plumbing schematic for the
proper installation.
SHUTTLE VALVE
The shuttle tee valve (PN 730016) is located on the upper
shelf ( ig. 103), attached to the clear line from the air pilot
and the flush toggle valve. Remove the sleeve clamps (PN
730015) and tubes (PN AA94C) at the valve.
Reassemble the shuttle valve in the reverse order, referring
to the plumbing schematic for the proper installation.
FIBE OPTICS MODULE
The fiber optics module (PN 730623) is located on the rear
left side of the upper shelf ( ig. 99). Disconnect the sleeve
clamps (PN 730015)
and the gray (PN AA-
94LG), purple (PN
AA-94P), and yellow
(PN AA-94TY) tubes
to the module.
Disconnect the six
black and white wires
with a standard jewel-
er's screwdriver.
Remove the four
mounting screws (PN
510160) with a 5/64"
Allen wrench. Re-
move module.
The fiber optic trans-
former (part of mod-
ule, PN 730623) is located on the left side of the upper shelf,
behind the divider wall. Remove the transformer from the
receptacle. Remove the two wires going to the optics module
with a jeweler’s screwdriver.
Reassemble fiber optics module and transformer in the
reverse order, referring to the plumbing and electrical
schematics for proper installation.
FIBE OPTIC T ANSFO ME ECEPTACLE
The fiber optic transformer receptacle (PN 840105) is locat-
ed on the left side of the upper shelf, behind the divider wall
( ig. 99). Remove the
fiber-optics trans-former
from the socket. Remove
the receptacle cover
screw and plate (PN
850071) with a standard
screwdriver. Remove the
receptacle mounting
screws (PN 510160) with
a 5/64" Allen wrench. Open the left-side panel of the cart to
remove the two wires from the receptacle with a #2 Phillips
screwdriver. Remove the green/yellow ground wire with a #2
Phillips screwdriver or a 5/16" wrench. rom the top side, pull
the receptacle through the hole. Remove mounting plate (PN
461771-01) and four nuts (PN 510395) if necessary.
Reassemble the receptacle in the reverse order, referring to
the electrical schematic for proper installation.
QUIN HANDPIECE BLOCK
The quin block (PN 730621) is located directly behind the
instrument arms on the upper shelf ( ig. 101). Remove the
Page 18
Mounting Bracket
Figure 101
DISASSEMBLY - Continued
Figure 99
Fiber
Optics
Module
Transformer
Tubes
Black Wires
Mounting Plate
Receptacle
Figure 100
Transformer
Receptacle
Mounting Screw
Figure 102
Mounting
Bracket
Figure 103
Air
Pilot
Valve
Shuttle Valve