MDT CASTLE 2415-UW User manual

SERVICE
MANUAL
M
X
2
Castle
2415-UW
Ultrasonic Cleaner
MDT BIOLOGIC COMPANY
1777 East Henrietta Road
PO Box 23077
Rochester, New York 14692-3077 USA )
MDT
Technology for Life
350593 Rev, A

SERVICE MANUAL 350593
Rev. A (3/14/96) New Release
Related Publications:
Owner & Operators Manual 350490
Parts Catalog 350594
DESCRIPTION
OF
SYMBOLS
&
NOTES
IN
MANUAL
The
following
symbols
with
related
notes
appear
in
this
manual.
“Warning”
notes
alert
the
user
to
the
possibility
of
personal
injury.
“Caution”
notes
alert
the
user
to
the
possibility
of
damage
to
the
equipment.
“Notes”
alert
the
user
to
pertinent
facts
and
conditions.
NOTE
>
NOTE
This
manual
contains
proprietary
information
of
MDT
Corporation.
It
shall
>
not
be
reproduced
in
whole
or
in
part
without
the
written
permission
of
MDT.
®MDT and Castle are tegistered trademarks.
Copyright © 1996 by MDT Corporation
ii
350593

Table of Contents
1. General Information
Service Features... -< nen nens 1-2
Safety Features ............ e 1-2
Technical Data. . ee 1-3
Electrical .........................,..,...., 1-3
Services 0.0008. 1-3
Weight............. 6.8.8 1-3
Ultrasonics . 2. 2. ee 1-3
Dimensions . ....................,..,........ 1-3
Ultrasonics System ...................... 이 이 이이 이의 14
Generators 1G, 2G ..................,,,...,.... 1-4
Transducers................. κ εκ ο εν κ εν νε κ νο 1-4
Timer1TMR し し し ーー 14
Tank/lid Components ........................ ..... 1-4
Неее еее еее 1-4
tidGasket.................................. 1-4
Work Tray Platform ............................ 1-4
WokTraV し ーー 1-5
Motor ....................,.,........,.... 1-5
Torque Limiter. ..................,.....,..... 1-5
Brake ............. reen 1-5
DiveAMmM ................ 1-5
WaterDetergert FlPot し し ο τον 1-5
OverlowPot ............................... 1-5
Drain Screen/Drain ............................ 1-5
LowLevelSensorPot し し κ ον ον νυν 1-5
HighLevelSensorPot .......................... 1-5
Control Components . . 2. . 2 2 2 2 rene 1~6
Controi Panel Cover. ....................,....., 1-6
Power 1PB ....................,.......,... 1-6
Sop2PB ............... 1-6
Lid 3PB ......................,....,,.,... 1-6
Degas 6PB .......................,......... 1-6
Fil4PB 0... ee ee 1-6
Ὀταίη ΘΡΒ es 1-7
Timer ITMR し し 22 2222 이 이 이 이 이 이 이 키 이 워 이의 의 이의 이 이이 이 이 의 의 1-7
Alarm еее еее 1-7
Toe SwitchTSW ο νο ο νε νο νε ο εκ ενω ενος εν ων ους 1-7
Reference—Push Buttons . ................,....,, 1-7
350593

Table of Contents (cont'd)
Cabinet
Components
..........,......,............
1-8
Daor..............,......,...............
1-8
DoorinterlockSwitchDRSW.......................
1-8
Sonic
Generators
1G,2G
............,.,...........
1-8
Water
Supply
Shutoff
.
................,.........
1-8
DetergeniFlowVave...........................
1-8
Detergent
Supply
TUDE
..........................
1-8
Detergent
Supply
.
............,......,........
1-8
2. Theory
of Operation
Introduction
...............,...................
2-1
O&ONotes
..................
2-1
Ultrasonic
Cleaning
. . .
2
2.
2.
2 2
2
이이
이 이
이이
이이
이이
이 이 이 이 이
이이,
,
2-1
O&ONotes
.
2.
.
2 2
ee
2-1
Ultrasonic
Sequences
. .
ener
rvee
2-2
Main
Components
.
.........,.,.............,....
2-3
Motorized
Lid
and
Platform
..........................
2-4
O&O
Notes
.............,.....,.,...........
2-4
Operation
.........................
ee
2-44
MainComponents.............................
2-4
Drain.
ee
2-5
Sequence
.
ο
νε
κ
ων
κ
ων
ενω
ων
νο
νο
κι
2-5
Main
Components.
2.
2 . 2
ns
2-5
ーー
2-5
Seguence
.................
2-5
Main
Components
........,......,............
2-5
Level
&
Temperature
Control
.........................
2-6
Level
Control
.
.....................,.........
2-6
Temperature
Control
...............,........,..
2-7
Control
System
...............................,
2-8
MainComponents.............................
2-8
3.
Service
Data
..........................
3-1
4. Troubleshooting
Troubleshooting
Chart.
.............,..........,...
4~1
Conditionat
Instructions
............................
44
Emergency
Stop
.............................
4-4
Manualiy
OpeningaClosedlid......................
44
iv
350593

Table of Contents (cont'd)
5. Adjustments and Calibration
interiock Bypass (Power with Door Open) .................. 5-1
Detergent FowRate ............................. 5-2
DetergeniFlowVave........................... 5-2
Detergent Flow Rate ..........,................. 5-2
Setting the DetergentFilowRate ..................... 5-2
Aluminum Foil Test . . ............................ 5-4
Inspect and Test the Transducers . ..................... 54
Fili and Heating Test . .............,...,........... 5-6
Timer eree 5-8
Summary .. ee 5-8
Setting the Timer (Programming) . ................,... 5-8
Setting the Run Time ........................... 5-8
Programming Mode . .........................,.. 5-8
Setting the Range. ............................ 5-9
Setting the Direction . ...................,..,.,, 5-9
Setting the Timer Mode . ......................... 5-10
άν νο νε νε νε νε εν νε νε νε εν εν νε κ εν εν ο εν νε νυν 5-11
Lid Position . .........,..,................... 5-11
Adjust the Drive Arm ........................... 5-12
Adjust the Limit Switches . ee 5—13
Adjust the Torque Limiter . εν εν ον 5-14
Motor enken ek een 5-15
Lubrigation .......,..,............,......... 5-15
Cleaning ................................. 5-15
Brake e eee ere 5-17
Description . .............................., 5-17
Maintenance ............................... 5-17
Level Probes LLC1, LLC2. .......................... 5-18
Test the Level Probes .......................... 5-19
6. Repair
Replace the Lid Gasket . ........................... 6—1
Manualiy Openinga€llosedlid......................... 6-2
Removing the Control PaneiCover...................... 6-3
Fuses ........ 00000 6-4
Controi Fuses . ............................., 6-4
Generator Fuses . .....,......................, 6-4
Фепегаюг5 „еее еее инь 6-5
Removethe ChassIS . . 2. 2 2 еее ен 6-5
SolenoildValves................................ 6-5
Repair Parts for Solenoids ........................ 6-5
Repiace the Injector . ............................. 6-6
350593

Table of Contents (cont'd)
Brake ..............................,...... 6-7
Operation . ............,................... 6-7
Friction Disc Replacement ........................ 6-7
Solenoid Replacement .......................... 6-8
Brake Replacement . . ................,......... 6-8
Torque Selection . ............................ 6-8
Brake installation ............................. 6-8
Torque Limiter. ...............,................. 6-9
Thermai Switches 1TAS, 2TAS ........................ 611
Replace Thermal Switch ......................... 6-11
Limit Switches. ............ e 6-11
Heater HTR еее еее неее» 6-12
Replace Heater . ................,............. 6-12
Recommended Spare Parts ..................... +... 6-14
Index ................,,...4444444 444 に 1
Vi
350593

Figure 1-1.
Figure 1-2.
Figure 1-3.
Figure 1-4.
Figure 2-1.
Figure 2-2.
Figure 3—1.
Figure 3-2.
Figure 3-3.
Figure 3-4.
Figure 3-5.
Figure 3-6.
Figure 4-1.
Figure 5-1.
Figure 5-2.
Figure 5-3.
Figure 5-4.
Figure 5-5.
Figure 5-6.
Figure 5-7.
Figure 5-8.
Figure 5-9.
List of Figures
2415—UW UltrasonicCleaner..................
TanklLidComponents ......................
Control Components . .......,...,............
Cabinet Components . .....................
Level Control — Filling . . ....................
Level Control — Draining . << 이 이 의 이 의의
Component Locations ......................
Piping Components .......................
Piping Schematic ........................
Electrical Schematic . ......................
Stop 2PB Positions . ......................
interlockBypass .................... vo.
DetergentFlowVave ......................
Detergent Flow Percentages...................
Bypass the Thermal Switches ..................
Transducers and Thermal Switches ...............
LCD Display & Controls .....................
Time Ranges . ..........................
Time Direction . .........................
Time Modes .....,..........,..,..,.......
Figure 5-10. Motor and Lid Components . ...,.....,.....,....
Figure 5-11. Adjust the Drive Arm ......................
Figure 5—12. AdjustthelLimit Switch .....................
Figure 5-13. Torguelimiter .........................
Figure 5-14. Brake Wear Adjustment ....................
Figure 5-15. Control Box, Level Probes and Level Probe Control Board
Figure 6-1.
Figure 6-2.
Figure 6-3.
Figure 6-4.
Figure 6-5.
Figure 6-6.
Figure 6-7.
Figure 6-8.
Figure 6-9.
Manually Opening a Closed Lid .................
Remove Control Panel Cover ..................
Generator Fuses . .....,...,..,..,.........
Removing a Generator Chassis .................
Replace the Injector . ......................
Brake Components . . ............,..,......
Brake Operator Asssembly . ..................
Torque Limiter . .........................
Replace Thermal Switch . ,...................
Figure 6-10. Remove the Heat Shields ...................
Figure 6-11. Remove the Heater Strip ....................
6-11
6-12
6-13
350593
vii

NOTES
viii 350593

2415-UW ULTRASONIC CLEANER
1. General information
GENERAL INFORMATION
The Castle 2415~-UW Ultrasonic Cleaner cleans surgi-
cal instruments and similar hospital hardware, using
ultrasonic energy in a heated water-detergent solution.
It uses a motorized lid and work platform to load and
unload goods, fills the cleaning tank with hot water and
detergent, controis the solution level, heats and main-
tains the solution temperature, agitates the solution with
ultrasonic energy, times the wash cycle, and drains the
tank when required.
To run a cycle, the operator first sets the timer. He then
sets an instrument tray on the work tray platform. He
presses a button to close the lid. The lid closes and
lowers the tray into the liquid. The cycle activates
automatically. When the cycle is complete, the work tray
platform automatically lifts the tray out of the tank to
where it can easily be removed to a rinsing station.
NOTE >
While sonic cleaning effectively cleans
and polishes instruments in a way
unmatched by other methods, it does not
replace the sterilization process.
Instruments cleaned in the ultrasonic
cleaner still need to be rinsed and
sterilized before being put back into use.
This manual contains the necessary instructions for
maintaining, testing, adjusting, and repairing the Castle
2415-UW Ultrasonic Cleaner. For optimum perform-
ance and unit life MDT recommends that only fully
authorized personnel service your equipment. Refer to
the warranty.
Unauthorized repairs will void the warranty.
Only a fully authorized service person
should attempt to service this product.
The circuits present high level voltage.
improper testing or repair procedures
could result in injury to the service per-
son and damage to the product.
35059388
FIGURE 1-1. 2415—UW ULTRASONIC CLEANER
350593
1-1

241
5-UW ULTRASONIC CLEANER
1. General information
SERVICE FEATURES
serviceable from the front
front-access to toe switch, control panel fuses, and
main power box
detergent flow control is front-accessible
liquid level probes, heater, thermostats are front-ac-
cessible
removable, hinged front access door
lift-off side panels
interlock bypass
plug-in relays in control box
modular sonic generators
hinged work tray platform for access to tank and
strainer
SAFETY FEATURES
STOP button Stops lid motion when actuated.
Restart must be with the LID
button, not the toe switch.
Motor Torque Stops lid motion if something is
Limiter caught in the lid.
Alarm Sounds whenever the lid is
moving.
Front Door Power shuts off when front door
Interlock is opened or removed, Fully
extended, the front door switch
bypasses this interlock for
troubleshooting and repair with
the door open.
Tank & lid Insulated and sound dampened.
350593

2415-UW ULTRASONIC CLEANER
1. General Information
TECHNICAL DATA
ELECTRICAL
Domestic 120 VAC 23 amps
60 Hz 3-wire ground
single phase
Wattage 2760 watts
Output power, 1000 watts
transducers
Heater 1000 watts
SERVICES
Hot Water V2" IPS (12.7 mm)
Drain
40-60 psi (276-414 kPa)
100-140ºF (38-60°C)
1W"IPS (31.8 mm)
WEIGHT
-475 lb. (216 kg)
ULTRASONICS
piezoelectric transducers 24
Sonic generators 2 x 500 watt
Ultrasonic operating freq. 40 kHz
DIMENSIONS
Unit 30" L x 30" W x 40" H
(762 x762 x 1016 mm)
Counter height 36" (914mm)
Tank 24" Lx 18"Wx10"D
(610 x 457 x 254 mm)
Cham. volume
Tank capacity
Max. tray size
Max. load
Heater
2.5 cu. ft. (0.07 cu. m.)
12 gallons at 7° liquid depth
(45.4 L at 178mm depth)
21"Lx13"Wx4"D
(533 x 330 x 102 mm)
20 lb. (9.1 kg)
1000 watts. Maintains tank
solution at 100-120° F
(38-49° С)
350593
1-3

2415~-UW ULTRASONIC CLEANER
1. General Information
ULTRASONICS SYSTEM
NOTE >
Reference abbreviations such as 1G for
Generator 1G are used in the Wiring
Diagram and the Electrical Schematic
(see Chapter 3, Service Data).
The ultrasonics system for the 2415-UW includes the
sonic generators, the transducers, the isolation trans-
former, and the timer (see Figure 3-5, Wiring Diagram).
GENERATORS 1G, 2G
Produce the proper frequency and voltage required to
drive the transducers.
TRANSDUCERS
Generate ultrasonic vibration using the piezoelectric
effect.
TIMER 1TMR
Allows the user to enter the cycle time; counts down and
displays the time remaining in the cycle.
HIGH LEVEL 一 ー ト ーッ ント
SENSOR PORT
TANK/LID COMPONENTS
LID
Closes and opens automatically when LID or the toe
switch is pressed. When closing, it lowers the attached
work tray platform into the tank. When opening, it raises
the piatform out of the tank.
LID GASKET
Provides a lid-to-tank seal when the lid is in the closed
position.
WORK TRAY PLATFORM
Supports the work tray for ultrasonic processing. The
forward half of the platform swings up out of the way for
cleaning the tank.
WATER- DETERGENT
M FILL PORT
A OVERFLOW
> 25 PORT
LOW LEVEL JM
SENSOR PORT
FIGURE 1-2. TANK/LID COMPONENTS
350593

2415-UW ULTRASONIC CLEANER
1. General Information
WORK TRAY
Holds the instruments to be processed.
MOTOR
Electric gearmotor rotates the cam plate that opens and
closes the lid via a drive arm (see Figure 5-10). The cam
plate also activates limit switches 1LS and 2LS.
TORQUE LIMITER
A safety device that disengages the motor from the cam
plate if resistance increases to a set level. it prevents
injury to the operator if something is caught between the
lid and the tank.
Keep fingers away from a closing lid.
Though equipped with a safety stop, it
may bruise a trapped finger.
BRAKE
The brake engages and holds the motor shaft in position
when it is in the POWER OFF condition (lid open or lid
closed). It automatically releases when power is applied
(lid in motion).
DRIVE ARM
Connects the cam plate on the motor to the lid to enable
automatic opening and closing.
WATER-DETERGENT FILL PORT
Point where the water-detergent liquid solution enters
the tank when FILL is pressed.
OVERFLOW PORT
Channels any excessive level of liquid out of the tank to
the drain.
DRAIN SCREEN/DRAIN
Empties the washer tank after DRAIN is pressed. There
is a pre-set time delay of 1.8 seconds in time-delay relay
1TDR before the drain opens. The drain screen pre-
vents large soil particles or other foreign matter from
entering the drain.
Pressing DRAIN again resets the time
NOTE > delay. This will prevent the drain from
opening for another 1.8 seconds.
LOW LEVEL SENSOR PORT
Houses the low level liquid sensor 2LLC. The sensor
activates the heaters that maintain the temperature of
the tank solution.
HIGH LEVEL SENSOR PORT
Houses the high level liquid sensor 1LLC. The sensor
activates the water supply shutoff when the level of the
tank solution fill reaches 634-7 inches.
350593

2415-UW ULTRASONIC CLEANER
1. General information
CONTROL COMPONENTS
Names of components in CAPITAL
NOTE > LETTERS are their actual labels.
CONTROL PANEL COVER
Magnetically latched plastic shield. Slides down for
access to control panel.
POWER 1PB
Activates the controls. Yellow indicator lights when the
button is engaged.
STOP 2PB
Deactivates all functions except POWER. This button is
actuated when in its extended position. For normal
operation of controls, the button must remain de-
pressed, (See also: Cabinet Components: Door
Interlock Switch.)
spot
LID 3PB
Activates the opening and closing of the lid. When
pressed following tank FILL, the lid will close and the
timed ultrasonic cycle will begin. After the cycle times
out, the lid will automatically open.
When there is no tank FILL, the button can still open and
close the lid. Yellow indicator lights when the button is
engaged. (See also Toe Switch TSW.)
DEGAS 6PB
Activates the sonic generators for the removal of en-
trapped air from the tank solution. Yellow indicator lights
when the button is engaged. Pressing this button also
overrides the timer. Pressing the button again stops the
process.
FILL 4PB
Activates the fill system. Button lights until the tank is
filled to the proper level (7 inches).
STOP 2PB
FILL 4PB
TIMER
TMR
CONTROL
PANEL
COVER
(Shown Open)
レー POWER IPB
||
| | up ape
| し レー peAsePB
1 キーー DRAIN 5PB
SWITCH
TSW
FIGURE 1-3. CONTROL COMPONENTS
350593

2415-UW ULTRASONIC CLEANER
1. General information
DRAIN 5PB
Deactivates the heaters, allowing the liquid to cool. At
the same time, it starts a 1.8-second time delay before
opening the drain valve. After the tank has drained, the
button will remain actuated (drain open) until either
FILL, STOP, or POWER is pressed. Yellow indicator
lights when the button is engaged.
TIMER 1TMR
Controls the duration of the ultrasonic wash. The timer
is automatically activated (along with the ultrasonic
wash) when the lid closes.
The timer may also be used manually to time the de-
gassing process. However, this process does not stop
automatically and will require pressing the DEGAS but-
ton.
NOTE >
The wash timer can be set for time
ranges other than minutes and seconds.
Refer to Appendix B: Wash Timer.
ALARM
Sounds an alarm whenever the lid is in motorized mo-
tion.
TOE SWITCH TSW
Actuated by the foot, the function of this switch is
identical to that provided by the LID button described
above. (Exception: If STOP is used to halt movement of
the lid, only LID can restart movement. The lid will then
respond to the toe switch.)
REFERENCE—PUSH BUTTONS
POWER 1PB
STOP 2PB
LID ， 3PB
FILL 4PB
DRAIN 5PB
DEGAS 6PB
350593

2415-UW ULTRASONIC CLEANER
1. General Information
CABINET COMPONENTS
(See Figure 1-4)
DOOR
Provides access to the service compartment beneath
the tank. Tuming the latch 90 degrees clockwise will
open the door.
DOOR INTERLOCK SWITCH DR SW
Deactivates all washer controi functions and lid move-
ment (including POWER) if the door is opened. Pulling
the switch out to its extended position will allow resump-
tion of unit operation with the door open.
WATER SUPPLY SHUTOFF
Provides a means to close the water supply line manu-
ally. The valve is open when the handle is in line with
the body of the valve. Turning the handle 90 degrees
closes the valve.
DETERGENT FLOW VALVE
Regulates the flow of detergent into the water supply
iine. Tuming the valve's micrometer dial clockwise will
decrease the flow. Turning it counterclockwise in-
creases the flow. The locking collar maintains the dial
setting. *
NOTE >
SONIC GENERATORS 1G, 2G
The proper setting of the valve depends
on various factors: type of soil, grain
hardness and pressure (PSI) of the
water supply. Refer to Chapter 5:
Detergent Flow Rate.
Provide the electrical energy necessary for the creation
of ultrasonic frequencies. Both components have an
ON/OFF switch and a HI/LO switch. During normal
operation the HI/LO switch should be in the HI position
to obtain optimal processing power.
DETERGENT SUPPLY TUBE
Conveys detergent to the water supply line when the
end of the tube is inserted into a detergent supply
container.
DOOR
INTERLOCK
SWITCH
MS DETERGENT SUPPLY (Not Shown)
DETERGENT
FLOW VALVE Store the detergent container in or near the cabinet of
the unit. Use the detergent supply tube provided. Longer
supply tubes may obstruct the flow of detergent.
WATER SUPPLY
SHUTOFF
DETERGENT
SUPPLY TUBE
350593ーP
DETERGENT SUPPLY
(Not shown)
DOOR
(Open) SONIC
GENERATORS
1G, 2G
FIGURE 1-4. CABINET COMPONENTS
1-8
350593

2415-UW ULTRASONIC CLEANER
2. Theory of Operation
THEORY OF OPERATION
INTRODUCTION
This chapter defines ultrasonic cleaning, describes the
sequences of operation for the 2415-UW, and details
the components in the unit. Referto Figures 3-1 through
3-6 as required.
Described systems include:
e ultrasonic cleaning (degas and wash)
e motorized lid and platform
e drain
e fil
* level and temperature control
e control system
Useful notes from the operator manual are included in
sections called O&O Notes. For detailed operating in-
structions, refer to Owner and Operator Manual:
Castle® 2415-UW Ultrasonic Cleaner, Manual No.
350490.
0&0 NOTES
e Ultrasonic vibrations can contribute
to the wear of some sharp, delicate,
or chrome-plated items. Before
processing any item in the ultrasonic
washer, consult the manufacturer's
guidelines to determine it's compati-
bility with the process.
After processing, rinse instruments
thoroughly to remove any soil/deter-
gent residue.
NOTES > *
* When properly conducted, ultra-
sonic processing will render items
CLEAN. Its function is NOT to steril-
ize, or to eliminate the necessity for
sterilization.
ULTRASONIC CLEANING
The ultrasonic cleaning system has three main parts:
Control Panel — where the operator starts and stops
the sonic action, and enters the
length of the cleaning cycie.
Generators — produce electrical energy to be
converted to ultrasonic energy.
Transducers — attached to the tank, convert the
electrical energy from the generators
into mechanical energy. This process
agitates the cleaning solution.
The generators create a voltage that oscillates the
transducers, expanding and contracting them many
thousands of times per second. The oscillation of the
transducers induces sound waves in the tank. As these
sound waves pass through the cleaning solution, they
increase and decrease the pressure of the cleaning
solution. The constant change in pressure continuously
forms and collapses millions of microscopic bubbles.
This creates the scrubbing action characteristic of ultra-
sonic cleaners.
The scrubbing action produced by the unit occurs even
in places that are difficult to clean by typical methods,
yet that action is also gentie enough not to harm the
items in the load.
0&0 NOTES
While sonic cleaning effectively cleans
and polishes instruments in a way un-
matched by other methods, it does not
replace the sterilization process. Instru-
ments cleaned in the ultrasonic cleaner
still must be rinsed and sterilized before
being returned to use.
350593

2415-UW ULTRASONIC CLEANER
2. Theory of Operation
ULTRASONIC SEQUENCES
The unit performs two ultrasonic sequences, Degas and
Wash. In Degas, the timer does not automatically shut
off the cycle when it has timed down. In Wash, the timer
does automatically shut off the cycle when it has timed
down. Otherwise, these sequences are similar.
Degas
OPERATOR ACTION 2415-UW ACTION
Press POWER 1PS POWER lights; components are activated
Set Timer Unit waits
Press FILL 4PB Detergent and water added thru auto fill procedure. When 4" is reached,
low level control 2LLC, ultrasonic cycle, and heat auto energized. When
7" is reached, high level control is opened and fill stops. 2-second delay
assures that level is reached before fill is stopped.
Press DEGAS 6PB Starts the cycle and the timer. Bypasses the timer's shutoff function.
Ultrasonic cycle will continue until DEGAS is pressed a second time.
Recommend DEGAS time: 4-5 minutes
Press DEGAS 6PB (2nd time) Press DEGAS 6PB (2nd time)Ultrasonic power stops.
0&0 NOTES
Air and other gases are normaily dissolved in the cleaning solution. These dissolved gases can impede the cleaning |
action. "Degassing" removes the dissolved gases and so improves the cleaning action. Degas the solution every time
the tank is filled with fresh detergent-water solution.
* This procedure uses DEGAS 6PB to start a degassing cycle. The timer cannot stop this cycle
NOTES > automatically. The timer counts down the remaining time until “OOM 00S” is displayed. Degassing
continues until the operator again presses DEGAS 6PB.
e Instead of this procedure, the operator can degas the unit by running a wash cycle of 4 to 5 minutes
with no load on the work tray platform. When the wash cycle is complete, the unit stops
automatically,
2-2 350593

2415-UW ULTRASONIC CLEANER
2. Theory of Operation
Wash
OPERATOR ACTION 2415-UW ACTION
Load Tray Unit waits.
Set Timer Unit waits.
Remove the load. Unit waits.
Press toe switch TSW or LID 3PB. Lid closes; alarm sounds when platform is moving; ultrasonics energized
and timed out; platform raised and lid auto opens; alarm sounds when
platform is moving.
MAIN COMPONENTS
Generators 1G, 2G
Produce high-voltage electrical energy for the
transducers to convert into ultrasonic energy.
Transducers
Convert electric energy from the generators into ultra-
sonic energy, agitating the bath.
Timer 1TMR
Must be set for cycle time. Times down and turns off
generators when time is up.
Isolation Transformer IT
The isolation transformer electrically isolates the sonic
generators from the power line and chassis for safety
reasons (it reduces leakage current). Aiso 1T reduces
feedback of spurious signals from the generators back
to the power line.
350593

2415-UW ULTRASONIC CLEANER
2. Theory of Operation
MOTORIZED LID AND PLATFORM
0&0 NOTES
Keep fingers away from a closing lid.
Though equipped with a safety stop, it
may bruise a trapped finger.
« Do not attempt to close a lid manu-
ally. To do so could damage the
mechanical linkage connecting the
lid to the lid motor.
» | Donotpry upa closed lid that will not
raise. Prying tools could damage the
lid gasket or the stainless steel! sur-
faces. (See Chapter 6, “Manually
Opening A Closed Lid.”)
e Do not place any objects on top of
the lid during washer operation. The
lid raises automatically at the end of
a wash cycle.
OPERATION
The operator presses LID 3PB or toe switch TSW to
operate the lid. If open, the lid closes. If closed, the lid
opens. An alarm sounds while the lid is in motion. Motor
1M connected to the lid via a vertical tie rod actuates the
lid. Brake 1B holds the motor and lid in piace while the
motor is de-energized. A torque limiter prevents a
closing lid from continuing to close if a finger or object
is caught in the crevice. Limit switch LID UP 2LS stops
lid travel when the lid is fully open; LID DOWN 1LS stops
lid travel when it is fully closed.
2415-UW Action
Lid is open: lid closes; alarm
sounds when platform
moving;
Ultrasonics energized and
timed out; platform raised
and lid auto opens; alarm
sounds when platform moving
Operator Action
Press toe switch
TSW or LID 3PB
Lid is closed: platform
raised and lid opens; alarm
sounds when platform moving
MAIN COMPONENTS (see Figure 5-10)
Lid 3PB, Toe Switch TSW
When pressed, and the lid is down, starts the motor to
raise the lid.
When pressed, and the lid is up, starts the motor to lower
the lid.
Limit Switches 1LS, 2LS
LID DOWN 115 Closed when the lid is down.
LID UP 2LS Closed when the lid is up.
Motor
Rotates in one direction to raise and lower the lid.
Torque Limiter
Tension adjuster to prevent damage to objects caught
between the lid and the top of the unit.
Brake
Engages when de-energized. Holds the weight of the lid
when it is open, and clamps the motor shaft when the
lid is shut. Releases when it and the motor are energized
to permit the motor shaft to tum.
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