Jackson JV-24 A User manual

JACKSON
DISHWASHER
Maintenance,
Operation
and Repair Parts Manual
PRIOR TO SERIAL NUMBER: 2000
JACKGCN PRODUCTS COMPANY
4009 East Bougainvillea
I Florida 33674
Telephone [phone]
The Corporate Fartneniiip

INDEX
SPECIFICATIONS. 3
GENERAL INSTRUCTIONS
(UNCRATING, INSTALLATION, DIMENSIONS) .... 4
INSTALLATION OF WASH AND RINSE HEADS. 5
GENERAL INSTRUCTIONS (OPERATION). 6
PREVENTATIVE MAINTENANCE.'.. 7
TIMER.. _ 9
SWITCHES (FRONT DOOR) INTERLOCK SYSTEM
& CHECKOUT. 10-11
THERMOSTAT ADJUSTMENT.12
RINSE TANK HEATER SYSTEM. 13
WASH TANK HEATER SYSTEM.14
HEATER SYSTEM (WIRING DIAGRAM). 15
WATER LEVEL CONTROL.16
SOLENOID VALVE INSTRUCTIONS. 17
SEAL AND CERAMIC FOR PUMP. 18
TROUBLE SHOOTING GUIDE.19 - 20 - 21 - 22
PICTORIALS
FRONT VIEW OF MACHINE.23
BACK VIEW OF MACHINE.24
LEFT SIDE VIEW.25
RIGHT SIDE VIEW. 26
VACUUM BREAKER, INCOMING PLUMBING
OVERFLOW AND PAN STRAINER.27
RINSE TANK WITH HEATERS, WASH ASSEMBLY
THERMOSTAT AND THERMOMETER.28
WASH AND RINSE HEAD ASSEMBLIES.29
PUMP AND MOTOR ASSEMBLY.30
FRONT CONTROL PANEL
AND INTERLOCK SWITCHES.31
DRAIN VALVE AND ELECTRICAL CONTROL PANEL . . 32
ELECTRICAL DRAWING WITH BOOSTER.33
ELECTRICAL DRAWING WITHOUT BOOSTER.34
PARTS LIST. 3 5 - 3 6
PARTS DISTRIBUTORS..37

SPECIFICATIONS
Jackson Dishwasher Model JY24 A — AF* — B - BF*
OPERATING CAPACITY 100%
JV24A
JV24B
Racks per hour
21
21
Dishes per hour
525
525
Glasses per hour
525
■ 525
OPERATING CYCLE
Wash time — seconds
120
120
Rinse time — seconds
15
15
Total Cycle — seconds
150
150
WASH TANK CAPACITY
Gallons
5.65
5.65
RINSE TANK CAPACITY
Gallons
- -
3
WASH PUMP CAPACITY
Gallons, per minute
60
60
WATER REQUIREMENTS 100%
Inlet Temperature °F
180°
140°
Gallons, per hour
52.3
52.3
Flow Pressure, PSI
20
20
Flow, gallons per minute
7.1
7.1
Inlet size — IPS
1/2
L 2
Drain size - - O.D.
1-1/2
1-1. 2
WASH PUMP MOTOR
Horse power
1/2
1/2
WASH HEATER,KW
1.0
1.0
RINSE HEATER, KW
5.0
ELECTRICAL REOUIREMENTSTSEE BELOW FOR DETAILS,
. UNDER ELECTRICAL RATING'.
DIMENSIONS
Height, with Top
: 5 "
36”
Height, with no Top
* i-'
3-1-1 2”
Width
7 . » *r
24”
Clearance Wall to Macn;-,e
2-1
2-1 4”
Depth
7 i * !
24”
Maximum Height for Dishes
• r'
14”
Rack Size
19*3 I”
X 19-3 4”
’(GTE VENTED BACK
* ALL ‘F’ MODELS ARE FREE STANDING (TOP AND SIDE PANELS)
ELECTRICAL RATING
MODEL
VOLTS
PHASE
APPROX. TOTAL LOAD AMPS
JV24B
220
1
35 Refer to
JV24B
208
1
35 Machine Data
J V 2 4 A
110
1
16 Plate

ucnciiHL ma i ruv i ivna (installation)
N0TE:Read the following instructions carefully, Proper installation of your Jackson Dishwasher will assure
proper machine operation.
UNCRATING JV24
1. Remove straps around carton.
2. Open top flaps of dishwasher carton.
3. Remove any packing from top and sides of machine that can be done with ease from top.
4. Slide carton sleeve upward over top of dishwasher, set to one side.
5. Lift dishwasher and wooden base from carton base.
6. Move dishwasher to general installation area.
7. Remove bolts holding wooden base to machine and screw in adjustable feet supplied.
8. Reassemble wash and rinse assemblies in machine using sketch and instructions in this manual.
9. Set dishwasher in place, ready for installation.
NOTE: NSF base gasket installation must be field installed on all AF and BF models. Gasket goes around
bottom on lower edge of sides, back and kick plate; secure in piece using liquid adhesive.
INSTALLATION INSTRUCTIONS
1. Level dishwasher machine using adjustable feet.
2. Refer to dimensional date sketch for connections.
3. The drain from the machine is a gravity drain system and should, therefore, have the proper drop from the
machine to the kitchen’s drain system. The drain connection is locate: to the left rear of the machine when
facing the machine’s door. The drain fitting is 1-1. 2” OD tube size. 7” from floor.
4. The incoming water line should be attached to the machine’s connection which is located to the front left
sice the machine. The pipe size to the machine should be 12” anc the water should be 140° for the
ncce E’s and 180° for the mode! A's.
5. The e ectrical connections shoulo be made to the terminal board locate: at the left center front. The ter-
-i-a.s are marked LI, L2 and Neutral. INSTALL PROPER CIRCUIT BREAKER. WIRE AND CONDUIT
SIZE "‘CONFORM WITH LOCAL AND OR NATIONAL CODES ;S~-NDARDSv
DIMENSIONAL DATA
Reference only
Subject to change
C^. -CCK
\
)MH
l
>VH
<
I
Kill
if)
III

REMOVAL OF PAH STRAINER FOR CLEANING
(Wash and Rinse Head Assemblies Must be Removed Prior to Removing Strainer)
1. Turn heat switch ‘off’ and drain machine by depressing drain switch for approximately 50 seconds.
2. Remove knurled screw from rinse feed pipe, remove rinse head assembly by pulling forward.
3. Remove 2 knurled screws from upper pump housing, wash head may now be lifted out.
4. Pan strainer now accessible, lift out and clean thoroughly.
5. Clean around pump intake with bristle brush.
6. Replace strainer pan.
7. Re-install wash and rinse head assemblies.
8. Clean strainer pan daily or as needed to insure proper machine operation.
INSTALLATION OF WASH HEAD AND RINSE ARM ASSEMBLIES
(Items Disassembled for Shipment)
1. Insert wash head assembly down into upper pump
housing as far as possible.
2. Line holes up on wash head assembly to match,
holes in pump housing.
3. Insert 2 knurled screws in pump housing, tighten
as necessary until wash head is seated securely
in pump housing.
WASH HEAD
RINSE ARM ASSEMBLY
I. Insert rinse arm assembly into female pipe receptical
protruding through back of machine.
5

GENERAL INSTRUCTIONS (Operation)
READ INSTRUCTIONS CAREFULLY: Proper operation of your Jackson Dishwasher will assure clean and
sanitized glasses and dishes, at optimum efficiency.
DISH PREPARATION
1. Scrape dishes thoroughly.
2. Pre-wash dishes by soaking or with hose.
3. Place dishes and cups in dish rack (cuds, upside down).
4. Place glasses and silverware in combination glass-silverware rack (glasses upside down, scatter silver¬
ware loosely on bottom). NOTE: Silverware in the upright position washes and rinses better than lying
flat. These silverware compartment racks available through dealer or service agency.
OPERATORS INSTRUCTIONS
1. Make sure clean pan strainer in place and slide empty rack in machine.
2. Place start rocker switch in center position.
3. Close door and lock latch.
i. Push -.30 of fill switch and hold approximately 45 seconds.
Turn *eater switch on.
6. Open aoor and slide rack of dishes into dishwasher.
7. Dispense proper amount of detergent in machine.
3. Star, automatic wash and rinse cycle of dishwasher by pushing on tcc or bottom of start switch (with
incio-ting light), light will come on.
9. When light goes out, cycle has ended. Open door, slide out rack of e ; e a n dishes to air dry, slide in rack
of dirr/ dishes, add detergent, close door and push start switch.
10. At ena of mealtime, shut off by placing start rocker switch in center position and heater switch orr.
Drain machine by pressing top of drain switch approximately 50 seconds. Remove pan strainer arter
'emov'nz lower rinse arm and wash head assembly, clean inside of machine and replace clean s^cine:.
* 0 5 " -.esc and lower rinse arm assemaly. (See page on Installation r iVasn Head and Rinse Arm
Assembles - Removal of Pan Strainer for Cleaning;
DETERGENT RECOMMENDATIONS AND RINSE ADDITIVES
ne r ’.hat you contact ycut Iccal Detergent Specialists tor tne cor.i.t ce.urgent and rinse aoci..<-s
rot me area. To help you until one can be reached, we suggest that you use a non-foaming dishwasner de-
2 - ;r0 ximately three tablespoons in wash tank when machine is ; i ;l e o . and one teaspoon earn cycle
.. - : , a --e re after. This may have to be increased or decreased to obtain satisfactory results

GENERAL INSTRUCTIONS
(PREVENTIVE MAINTENANCE)
(The following is to be performed as needed).
READ CAREFULLY: Proper maintenance of your Jackson Dishwasher will insure optimum service with
a minimum of down time.
1. R e move all lime and corrosion deposits.
a. Fill the machine with wash water as would ordinarily be done for washing.
b. Open door and place one cup or less of de-liming compound into the water, which is available
from your detergent supplier.
c. Turn on the manual wash switch and allow to wash for five minutes.
d. Open door and examine the interior. All lime should be removed and parts should be shiny. If not,
allow to wash for longer period.
e. After the interior is clean, with door closed, empty the wash water by depressing drain switch for
approximately 50 seconds. Refill machine and allow to run for two minutes, then, again drain the
wash reservoir.
2. C l e an around overflow strainers and drain hole.
a. Clean around overflow and strainer pan.
b. Clean around pump intake (toothbrush makes excellent tool for cleaning).
3. C l ean Y-strainer on incoming water line. (Water to machine must be turned off for this operations
a. R e move plug and clean strainer.
4. C l e a n rinse tubes.
a. Remove rinse assembly by disconnecting rinse : eea pipe and removing end-plugs on lower rinse.
b. Clean all rinse tubes and feed pipes with special crush supplied.
c. If spray holes in the rinse tubes are clogged, they may be cleaned with a pointed object.
5. C l e a n wash head assembly.
a. By removing two knurled screws holding wash heso assembly to pump.
b. Clean assembly at sink by flushing water through spray jets.
c. If spray jets are still plugged, use sharp obi eci t: dislodge and flush again.
d. Reinstall wash and rinse assemblies. (See page w : t h instructions)
5. Clean any deposits which may have built up on exterior moving parts.
a. Clean around door gasket.
b. Using a soft bristle brush, clean around switches on exterior of control panel. (Use no waterf.
c. Use soft bristle brush, dip in wash tank water and scrub inside door around gasket and hinges.
Use clean cloth or pacer towel to wipe off loose residue.

TIMER for MODEL JV24
DISHWASHERS
GENERAL DESCRIPTION
The timer is a self-contained (frame mounted) timer of the repeating cycle type. It is mounted on the
control panel of Jackson Automatic Dishwashing machines, to control the automatic functions of these
machines. It consists of a clock motor which operates on 60 cycle, AC, 110VAC. In addition to the clock
motor, the timer also contains a driven cam arrangement which operates three micro switches.
PRINCIPLE OF OPERATION
The timer controls various operations of the automatic washers as per wiring diagram for each machine,
however, the timing cycle and the micro switches are the same for each model. The time for ONE COMPLETE
REVOLUTION of the cam shaft is approximately 300 seconds allowing two wash and two rinse operations for
complete revolution of the cam shaft. The micro switch nearest the timer motor is the hold circuit and
uses both the NO and NC contacts. The middle micro switch controls the wash and uses the NO contact.
Toe micro switch farthest away from the timer motor controls the rinse and uses just the NC contact.
SERVICE INSTRUCTIONS
CAUTION: Always remove the power to the machine before working on the control panel
or while servicing the components on the switch panel. All electrical checks
should be mace by qualified personnel.
The: ooeration can be observed after removing the machine’s kick;:are by loosening the two screws
If -. ;$ determined that the timer is.defective, it is recommended the:
-lie: :;e.c maintenance can be accomplished as follows:
new timer be installed. However.
A frozen contact on a micro switch will be indicated by one function .eing executed all the time or ins
roe a click when the switch arm is actuated. The micro switch : s -enlaced by:
= e-:ve all wires from the timer, properly tag them to assure pr
Remove the two screws which hold the timer to the control pan'
R*e screw holds the micro switches, cams and actuating arms
s,;e opposite the motor. Remove this screw. NOTE: 5? sure
- switch. Cam nearest timer motor has 1 2 raised, cam ce
fr: — timer motor, smallest oepresseo areas.
T - e unit can new be taken apart anc the defective micro
: e a ss e m bie. NOTE: The flanges on the cams are soon
switc
nat:
- replacement.
:he frame. This screw is seen on the
note which cam goes with which
'. larger depressed areas, cam furthest
laced.
cniy mesh in one aireelicn.
or
* ■ ; • -i-s cam drive system is ecuipoe: with a clutcn to erapie
-es. Remo/e power to machine BEFORE touching timer.
.- one direction only. Do net force them. As tarns actuate
test the switches with an ohmmeter.
one t: view the operations of :.*e cams ana
Relate cams by turning with fingers; cams
sw.;:nes, listen for the ‘dick’ ;; the switch

DEFECTIVE MOTOR
A defective motor is indicated by the fact that the cams do not rotate or the machine does not perform
the automatic operations or performs a specific part of the cycle continuously, but works okay on manual.
Remember, the timer motor is controlled by the start switch and the hold micro switch, check this complete
circuit before changing motor. The motor is replaced by:
1. Remove motor leads from shorting bar and neutral.
2. Remove the two screws which hold the motor.
3. Replace with a new motor.
NOTE: It may be necessary to remove complete timer to replace motor; if so, follow steps 1 and 2,
previous page.
TYPICAL TIMER SWITCH
A. TO UPPER RIGHT TERMINAL START SWITCH
B. TO LOWER RIGHT TERMINAL START SWITCH
C. TO BOTTOM TERMINAL MANUAL WASH SWITCH
D. TO UPPER TERMINAL OF RINSE SWITCH
E. T O NEUTRAL TERMINAL
F. S H ORTING BAR CONNECTED TO ALL THREE
TIMER SWITCHES, THIS TERMINAL
D
TIMER
F (on Rear)
E

REPLACEMENT of SWITCHES
in FRONT DOOR
There are five switches installed in the door's upper-righthand corner. These are the Drain, Start,
Rinse/fill, Heater and Manual wash.
Before working on machine, it is important that the power to the machine be turned off at the Circuit
Breaker - trip Breaker to its off position. Remove inside door from machine by removing the eight screws
on the flanged section of the inside door panel. The five switches are all snapped into place in individual
rectangular holes. By using a screw driver, it is possible to pry up the chromed flange on each side away
from switch and remove the switch from flange. Little pressure should be used to prevent damage of switch
and flange.
After the switch has been checked to see if it’s defective, replacement can be made fey placing the new
switch close to the defective switch and moving one wire at a time, transferring them to the same terminals
on the new switch until all wires have been reconnected. If this is not practical, pull the wires loose, one
at a time, tag them and reconnect them acccrding to the electrical diagram.
Put all switches back into place making sure switch protrudes through front door properly (NOTE: Two
click positions on bracket). Replace inner door panel. Power can be reapplied to the unit and dishwasher
run through cycles, checking all operations after replacement.
INTERLOCK SYSTEM
The Interlock System is designed to prevent the machine from operating wr.en the front door is opened cr
not latched prcoerly.
The Interlock System consists of two safety switches, one mounted sc cna: one door latch has to be cicseo
to complete the circuit. The other switch is iocated so that a pin on the macnir.e depresses a safety switch
mounted cn the coor. to complete the circuit. Either of these switches, if net cepressed, will prevent the
macrune from operating. Basically, the doer must be closed and the door latcn locked in order for the machine
to function.
DOOR SAFETY SWITCH (SIDE)
DOOR LATCH SAFETY SWITCH

CHECKOUT (INTERLOCK SYSTEM)
NOTE: All electrical checks should be made by qualified service personnel.
If it’s determined that the proper power is being applied to the machine’s incoming terminal blocks, then
further check of the safety switch should be made. NOTE: THIS CHECKOUT WOULD ONLY BE PER¬
FORMED IF NONE OF THE SYSTEMS OF THE MACHINE OPERATE. THIS WOULD MEAN THAT
NONE OF THE SWITCHES, WHEN DEPRESSED, WILL PERFORM THE FUNCTION NOTED FOR THAT
SWITCH.
Example: Drain, fill, start or manual wash switches.
Proceed with checkout.
1. Remove power to the machine by turning circuit breaker that protects the machine
to ‘off’ position.
2. Open the front door and remove screws holding inside panel of door.
3. Disconnect one wire from the switch closest to the door latch and using an ohmmeter,
depress the lever of the switch and check that there is continuity across that switch.
If there is no continuity, replace switch.
4. Check second safery switch located in top left'nand corner of door. Remove wire from
one side of the switch and check for continuity with ohmmeter when switch is depressed.
If there is no continuity, replace switch.
5. Replace inside door panel.
6. Re-apply power & re-check operation.

TnBKmosTAT ADJUSTMENT
The thermostat can be adjusted by turning screw #1 (see picture) on the thermostat control box cover.
(Remember the present setting, in case the problems are elsewhere in the control circuit.) A CW rotation is
used to obtain a lower temperature setting and a CCW rotation is used to obtain a higher temperature setting.
A 1/8 tum of screw si changes the temperature approximately 15° F. If screw si is turned all the way to
its stop in either direction; adjust screw s 2 as follows. DO NOT TOUCH THE SCREW SEALED WITH
RED PAINT. When adjusting screw s2 power should be disconnected during adjustment.
Set screw si so that it can be turned equal distances in either direction, then:
—if screw si stopped while turning in CW direction, turn screw uz 3.'4 turn in CW direction.
—if screw si stopped while turning in CCW direction, turn screw s2 3/4 turn in CCW direction.
This will bring the thermostat to approximately the same setting obtained where screw si stopped. Check
the present temperature setting before attempting any further adjustments. Use screw si for any further
adjustments.
i
Screw £1
FRONT VIEW
12

RINSE TANK HEATER SYSTEM
FUNCTION
The Rinse Tank Heater System is electrically connected in the circuit with the control system
functioning on 110/130V and the power system functioning on 208/230V. The Heat circuit is
controlled by a heat switch (mounted on front door) and a thermostat (mounted near thermometer)
which activates the coil on the heat relay. When higher temperature is required, power is applied to the
heaters when the contacts of the heat relay are closed. Should the rinse tank thermometer read either
too high or too low, follow checkout below.
CHECKOUT OF HEATER SYSTEM FOR RINSE TANK
(Refer to Drawing, Figure ?2)
NOTE: THE FOLLOWING CHECKOUT SHOULD BE DONE BY A QUALIFIED
SERVICE PERSON OR ELECTRICIAN
1 .
2 .
3.
4.
Turn off power to machine by tripping circuit breaker to 'off' position.
Remove front kick plate below door.
Make sure rinse temperature is below 180°
Reapply power and observe heat relay (2pole) letter E, figure 2, (next to timer)
on and off several times.
as heat switch is
1. If heat relay contacts do not close: with heat switch on
a. Check power supply at Position 1 on terminal board X. Vcitage snould be 110VAC, if not, che
customer's breaker. If defective, replace.
b. Check position 2, voltage should be 110V. If not, check switch as necessary.
c. Check position 3; there should be ‘zero' volts there. If not. reaaiust thermostat per thermosta
instructions.
c. If voltage is being applied to positions 1 and 2 then the relay snoulo be replaced, coil on relay
probably defective.
2. Tc cetermine if elements are working
a. Tnere's an insulated movable bar on the heat relay across the top of the two contacts. With an
insulated probe, depress the bar and observe rinse thermometer, the temperature should rise
noticeably in a minute or two. If it moves VERY slowly, it would indicate that one element is
cefective. If it moves consistently higher at a good rate, eiemerus are okay. NOTE: A CHEC
WITH AN AMP PROSE. IF AVAILABLE. CAN BE MADE. Tee elements together should draw
20 amps, one element will draw only 10 amps. Replace element if found defective.

3. I f the heat relay closes
a. Check power supply at position 4 on terminal board X, right hand view, it should be 220V approx.,
if not, check circuit breaker at customers panel; replace if defective.
b. Check power at position 5, voltage should be 220V. If not, check connections and wires for breaks,
replace as necessary.
c. With heat switch on and relay closed; check power at position 6, voltage should be 220V. If not,
replace heat relay.
d. If Ho. 3 above checks out okay, check at position 7, voltage should be 220V. If not, check wiring
from heat relay to elements for loose connections or broken wires; repair as necessary.
WASH TANK HEATER SYSTEM
FUNCTION
The Wash Tank Heater Control system is electrically connected in the circuit to operate on 220V.
(Older models 110V). The heat circuit is controlled by a heat switch (mounted on front door), water level
control (mounted middle of control panel), and thermostat (mounted near thermometers). When higher tem¬
perature is required, power is applied to the heater element through above controls. Should the wash tank
thermometer read either too high or too low, follow checkout below.
CHECKOUT OF HEATER SYSTEM FOR WASH TANK (Refer to drawing, Figure 1)
NOTE: THE FOLLOWING CHECKOUT SHOULD BE DONE BY QUALIFIED
SERVICE PERSONNEL OR ELECTRICIAN
1. Ready machine for normal dishwashing operation with wash tank water at proper level.
2. Remove front kickpiate below door.
NOTE: POWER’S STILL APPLIED TO CIRCUIT, SO BE CAREFUL
3. Check power to machine at position 1. terminal board X should read 110V. It nor. check customers
circuit breaker, if defective, replace.
4. Wash temperature should be 130° or less to proceed.
5. Deserve water level control, letter ‘B’ fwith front door closed and latchedi. I urn neat switch on arte
off severai times. Relay and contact points (inside clear plastic case on water revel control) shouiu
move :a:k and forth.
AA If water level control relay doesn’t close.
1. R e ; er to page on Water Level Controi’s function and checkout.
23 if water revel control relay does close, proceed with heat switch on.
1. Cf-eck vcltase at Position 1 on terminal board X. Voltage is HQ.
2. 3r.e; - r Position 3. Figure 1; there smeuid be no voltage. If there is voltage, then adjust thermostat
ee r to page on Thermostat Adjusting •.
3. Creek Position 2 at heat switch A. There should be 110V.
Che:* Position 5. Figure 1. voltage should be 220. If not, check Position 3. there should be 220V.
5. Temperature should rise slowly, a check with an amprobe woulc indicate if the element is drawing
fa correct amperage. Replace element if defective.

A-HEAT SWITCH
B-WATER LEVEL CONTROL
C - THERMOSTAT
D - (WASH) RING HEATER
E- RELAY
F - RINSE HEATERS
G-BUS BARS
X-TERMINAL BOARD

WATER LEVEL CONTROL
as Used on JV-24
FUNCTION
The water level control device is utilized on this machine to automatically control the cutoff of the
wash tank heater when water drains from the wash tank.
CHECKOUT
NOTE: All electrical checks should be made by qualified service personnel.
The control .is designed to sense when the proper water level is maintained. At this time, the relay
in the clear plastic case will activate, closing the circuit to the thermostat which completes the wash tank
heat circuit as it closes. If one of the following problems exist, this unit should be checked out as shown
below.
1. Wash heater circuit is not activated with water at proper level (up to overflow level on overflow pipe':
in wash tank.
2. Wash heaters remain on when water drained from wash tank. (Sometimes caused by deposits on prcira ■
PROCEED WITH CHECKOUTS
1. Remove power source to machine by moving circuit breaker to ‘off’ position.
2. Remove screws holding lower kick piaie on front of machine and locate water level control (sketch oeiow
3. Remove, mark and insulate, for easy replacement, wires going to letters C & H.
4. Re-apply power, turn on heat switch. With an insulated wire, connect jumper wire between tenina/s
C & H (24 volt system).
5. If relay operates, the water level contrci action can be deemed operational; then other causes shcu i :e
explored.
3. I f relay doesn’t operate, replace contrci.
7. Remove power source once again and repiace wires that were removed in step three to original terminals
■ see trouble shooting section for other possible causes).
U

SERVICE INSTRUCTIONS
(INCOMING WATER SOLENOID YALYE)
DISASSEMBLY - These valves may be taken apart by unscrewing
the bonnet and the enclosing tube assembly from the valve body
assembly. See Fig. 3. After unscrewing, carefully lift off the
bonnet and enclosing tube assembly. Don't drop the plunger.
The “0” ring seal and diaphragm cartridge can now be lifted out.
Be careful not to damage the machined faces while the valve is
apart.
TO REASSEMBLE - Place the diaphragm cartridge in the body
with the pilot port extension UP. Hold the plunger with the syn¬
thetic seat against the pilot port. Make sure the "0” ring is in
place, then lower the bonnet and enclosing tube assembly over
the plunger. Screw bonnet assembly snugly down on the body
assembly.
Plunger Asserily
FIG. 3
DIAPHRAGM CARTRIDGE
POSSIBLE PROBLEMS
Pilot Port extension si clcgge:
Hole *2 clogged
REMEDY
Pass heated straight pin tr.rcog* noie ^2
or clean hole ?i

9ehl ana vBKAmivTor
PUMP SYSTEM
f
General Information
The wash and drain pump are part of the total motor pump system. One seal and ceramic are utilized to
prevent the pump from leaking.
Replacement of Seal and Ceramic
1. Drain machine either by depressing drain switch or by bailing out.
2. TURN INCOMING POWER TO MACHINE OFF.
3. Open door * remove dolly, racks, rinse head assembly and wash head assembly.
4. Remove kickplate (located under front ccor).
5. Unplug motor at connector
6. Loosen eight screws holding pump in sump tank.
7. Disconnect drain hose from motor (must be done from underneath machine).
3. Full motor and pump gently upward and move from side to side as required to remove unit.
cOld machines motor removed downward"'
3. Set pump and motor on bench and process.
10. Loosen eight screws holding upper pump housing, and remove housing.
11. Remove diffuser plate.
12. Loosen impeller screw and remove impeller.
13. Remove suction adapter plate.
14. Remove drain inlet plate.
15. Remove propeller.
15. Remove mounting plate from motor loosen 4 phillips head screws on bottom of plate).
17. Knock out old seal carefully and clean ncie, re-insert new seal. NOTE: Be sure not to ruffle eases
of seal when inserting. Seal should contact all resting surfaces at one time.
15. Ceramic is imbedded in propeller and normally does not wear or need replacement, but check s :* :*a:<s.
15. Re-install merer and pump by reversing aoove process.
© © 0 -
MOTOR
MOUNTING PLATE
STATIONARY SEAL
SHIM WASHERS
ON MOTOR SHAFT
CERAMIC
DRAIN PROPELLER
IS

PROBLEM
CAUSE
SOLUTION
Water overflow out bottos of
Machine not level
Level machine
front door when wash pump
Slight tilt to Rear
is operating
Overflow drain clogged
Remove obstruction, checking
inside of machine first
Water level in machine’s
Solenoid valve not closing at
wash reservoir too high
end of fill or rinse cycle
causing excessive water
problem
Detergent foaming
Reduce quantity of detergent
Wash motor doesn’t operate on
Wires broken or loose
Check all wires in the motor and
manual wash
reconnect as necessary
Defective manual wash
switch
Replace
Bad bearing, noticeable by
noisy bearings or locked
drive shaft
Replace
Defective motor starting
relay. (Typical - motor
hums)
Replace
NOTE: T H E MOTOR STARTING R
ELAY IS UTILIZED TO INSERT A
STARTING FIELD IN THE WASH
PUMP MOTOR. ONCE THE MOTOR HAS GAINED SPEED, THE RUNNING WINDING WILL THEN
TAKE OVER AND THE STARTING WINDING WILL BE REMOVED WHEN 'HE RELAY KICKS
OUT. THIS RELAY IS T'r
IE AMPERAGE SENSING TYPE.
Motor runs on manual wash hut Defective center micro switch
Replace s*i;:-.
doesn’t operate on automatic
of timer
(rinse operates okay on both
manual and automatic cycles'! Defective circuit in manual
wash switch
Replace s
Nc water comes thrcu|m tie
! Hand water valve to machine
Turn on *e:e' .e /e
rinse arms when the rinse fill
I not turned on
switch is depressed
Defective coil on
solenoid valve
i Replace ::
Broken c: loose wires
1
Repair :•
Defective manual rinse fill
switch
Re’place
19

PROBLEM
CAUSE
SOLUTION
Little or no water coming
through rinse assemblies
Limed up rinse heads or
piping
Begin by cleaning rinse heads
using instructions for de-liming.
If this isn’t satisfactory, then
clean the rinse feed pipes
Water pressure low
Increase pipe size to machine
Rinse doesn’t operate on
automatic during timed cycle
(but does operate on manual
rinse/fill operation)
Micro switch defective
(this is the micro switch
furthest from the timer motor
on the timer assembly)
Replace
Rinse fill switch defective
on N.C. contacts
Replace
t
i
|
j
j
]
i
Rinse water runs continuously
with circuit breaker controlling
machine turned oft
I
Defective plunger in
solencio valve
Defective diaphragm in
soler.cla valve
Replace plunger
Check both holes in diaphragm
cartridge to insure that they
are open. The one on the outs-ce
cerimeter shoulc be the size :: r
orainary straignt pin. If it’s ?,c:.
heat a straight pin and put it
through this hoie to enlarge. If
this fails to correct situation,
replace diaphragm
NOTE: "l DISASSEMBLING SOLENOID VALVE. USE INSTRUCTIONS SHOWN ON SEPARATE PAGE.