Jackson 150B Service Manual

MODEL 150 B/PRB

HIGH TEMPERATURE DOOR

TYPE DISHWASHER

1983-1989

SERVICE MANUAL

INCLUDES:

-Warranty Policy -Basic Functions of Dishwasher

-Installation Requirements -Maintenance and Care

-Operating Instructions -Illustrated Parts List

-Description of Components -Electrical Diagrams

WORLD HEADQUARTERS & MANUFACTURING OPERATIONS

Highway 25E, P.O. Box 1060 Barbourville, KY 40906

888/800-JMSC FAX [phone]

February 5,1999 (Reprinted without change) P/N 7610-100-26-00 Rev A

SPECIFICATIONS

SPECIFICATIONS 150 SERIES ITEM
MODEL 150 150B 150PRB

Operating Capacity

Racks per hour 57 57 55
(NSF Rated)
Dishes per hour 1425 1425 1375
Glasses per hour 1425 1425 1375

Operating Cycle

Wash Time-Sec 45 45 45
Rinse Time-Sec 11 11 11
Total Cycle-Sec 60 60 60

Wash Tank Capacity

Gallons 12 12 12

Rinse Tank Capacity

Gallons N/A 3 3

Wash Pump Capacity

Gal Per Min 188 188 188

Thermometers

Wash — "F 140-160 140-160 140-160
Rinse — "F 180-195 180-195 180-195

Water Requirements

(NSF Rated)

Inlet Temperature — °F 180 140 140
Gal per hour 99.7 99.7 97
Flow Pressure PSI 15-25 15-25 10-25
Flow Pressure PSI (Optimum) 20 20 20
Flow GPM 9.6 9.6 10.5
Inlet - I.P.S. 3/4"
Drain - I.P.S. 1-1/2" 1-1/2" 1-1/2"

Wash Pump Motor

Horsepower 1 1 1

Rinse Pump Motor

Horsepower N/A N/A

Electric Heat Wash

KW 1.5 1.5 1.5

Electric Heat Rinse

KW N/A 12.3 @ 220V 12.3 @ 220V

3/4" 3/4"

1/2

11.0 @ 208V 11.0 @ 208V

3

Specifications 150 Series, cont'd

Dimensions

Length
Width
Height
Standard table height
Maximum Clearance
for Dishes

Standard Eq. Racks

Dish 19-3/4 x 19-3/4
Combination

Shipping Weight

Approximate
basic model

Electrical Rating

Model Volts
150 208V or 220V 1
150B 208V
150B 220V
150PRB 208V
150PRB 220V
150B 208V
150B 220V
150PRB 208V
150PRB 220V

Specifications subject to change without notice.

Approximate

24"
24"
63"
34"

15"

2
2

400

Phase

24"
24"
63"
34"

15"

2
2

400

1
1
1
1
3
3
3
3

Total Load Amps

24"
24"
63"
34"

15"

2
2

400

16
65
68
65
68
38
40
38
40

4

GENERAL INSTRUCTIONS

(INSTALLATION/DIMENSIONS) FOR 150B, PRB SERIES

NOTE: Read the following instructions carefully. Proper installation of your Jackson Dishwasher will
assure proper machine operation.

1. Open side doors, the front door (hook open) and remove dish, cup, and glass racks, and set to one
side for later use. Remove the tape holding the overflow strainer, the pump intake strainer, the wash
head assembly and the rinse head that are inside the machine.

2. Cut straps holding machine to base of crate, ease machine onto floor and slide into place of
installation.

3. Connect drain to bottom of machine (1 1/2" IPS female fitting on bottom of wash sump) with proper
slope to conform with local and/or national codes. Drain is a gravity feed system from machine.

4. The incoming water line to the unit must be 3/4" with the capacity to supply 10.5 gallons per
minute with a flow rate of 20 PSi. The temperature at the unit must be 140° F. This connection

is just before the Y-strainer. Connect to conform with local and/or national codes (STANDARDS).

5. Electrical connections should be made through hole in bottom of power box to terminal board inside
(to the right lower side of control box). This terminal board is accessible by removing the lower cover
plate on control box. The terminals are marked L1, L2 (requiring 208—230V, single phase), or L1,
L2, L3 (requiring 208—230V, three phase). There is a grounding lug inside of the power box on the
bottom left. Be sure all connections made are tightened properly. Refer to data plate for Voltage and
Amperage totals.

6. Install the proper circuit breaker, wire, and conduit size to conform with local and/or national codes.
Refer to data plate for electrical loads.

7. DO NOT APPLY POWER UNTIL STEP 10.

8. Insert pump intake strainer and overflow strainer, then close door.

9. Turn on hand valve controlling water supply to machine; check for any leaks in plumbing
and connections.

10. To energize electrically, proceed as follows:
a. Turn on customer's circuit breaker controlling machine.
b. Check voltage at incoming terminal L1, L2, and L3 (if applicable). It should match

data plate voltage. Voltage at L1 and L2 should be checked to ground individually to
ensure that a high (or wild) leg is not connected to L1 or L2. (Voltage exceeding 150V
to ground would indicate high leg).

c. If voltages are in required range, turn on 15 amp circuit breaker on side of power box.

The 15 amp circuit breaker protects and controls the motors and control circuit only;

it is not meant to protect or control the rinse heaters.
d. insert a rack into the machine and close all doors.
e. Turn on the power switch; this supplies voltage to the operating controls. Then

depress the rinse/fill switch. The unit will automatically fill the wash tub with water

to a specific level.

f. Open the front door and check the water level. It should be 1/4" below overflow level.

If not, check the incoming water line making sure that the solenoid valve fully opens

and closes as the switch is turned on and off.

g. if the water is at the proper level, close the front door and observe the temperature

gauges; the rinse temperature should rise to the specified level of 180° within five

minutes if the incoming water temperature is 140° to the booster tank.

h. The wash heater will take longer to reach 150'F, as the element is designed for

maintaining temperature, not heating.

i. Turn the manual wash switch on with the door closed. You should hear the water

being pumped as it strikes the top of the machine. Turn off the manual wash switch.

j. The unit is now ready to proceed with the washing of dishes in accordance with the

operating instructions in this manual and the instruction sticker on the front door of

the dishwasher.

5

INSTALLATION of DETERGENT

DISPENSER and/or RINSE INJECTION

EQUIPMENT

Located in the back of the control box on top of the machine is a knockout which is provided for a 1/2"
conduit fitting. Terminals DT-1 and DT-2 provide line voltage (208/220VAC) during the machine cycle.
Equipment connected must not exceed 0.5KVA. Connections MUST be made with suitable materials and
MUST be in accordance with all applicable codes. ALL ELECTRICAL CONNECTIONS MUST BE MADE
BY QUALIFIED PERSONNEL

Two fuses are needed to meet the requirements of the dispensing equipment being put on the unit. These
fuses should be sized to meet the requirements of the dispensing equipment, however, they should not
exceed 2.5 amps.

Located on both sides of the machine are nylon bulkhead fittings either of which must be removed or
modified for the detergent entry port.

Located on the bottom of the wash tank of the machine is a nylon bulkhead fitting which must be removed
in order to install the detergent equipment sensing probe.

Located in the fitting adjacent to the vacuum breaker is a pipe plug which must be removed in order to
install a rinse agent dispensing devise.

7

GENERAL INSTRUCTIONS

(OPERATION) 150B, PRB

READ INSTRUCTIONS CAREFULLY: Proper operation of your Jackson Dishwasher will assure
clean and sanitized glasses and dishes at optimum efficiency.

DISH PREPARATION

1. Scrape the dishes thoroughly.

2. Pre-rinse the dishes by soaking or by spraying off with a pre-rinse hose.

3. Place the dishes and cups in the dish rack with the cups upside down.

4. Place the glasses and silverware in the combination glass-silverware rack with the glasses upside
down. Scatter the silverware loosely on the bottom of the rack. Do not put glasses on top of the
silverware.

NOTE: When silverware is in an upright position, it washes and rinses better than lying flat. These
compartment silverware racks are available through your dealer or service agency.

MACHINE OPERATION

1. Open the front door and insert the pump intake strainer and overflow strainer.

2. Close all of the doors.

3. Turn the power switch on. Depress the rinse/fill switch and release. The machine will now
automatically fill the wash tank and energize the wash and rinse heater control circuit.

4. Allow the temperature to rise to the required temperatures on the wash (150°) and rinse (180—
195°) gauges.

5. Raise up the side doors. Slide in a rack of dirty dishes. .

6. Add detergent (see Detergent Recommendation). If an automatic detergent dispenser is used,
follow the manufacturer's instructions.

7. Lower all of the doors.

8. Start the automatic wash and rinse cycle of the dishwasher by depressing the start switch (right­hand side) and releasing. Cycle will continue with switch in center (auto) position. Left-hand
position of switch (manual) is intended for use if timer is inoperable. Panel light will indicate cycle
function.

9. When the ready light comes on, open the side doors, slide out the rack of clean dishes, slide in
another rack of dirty dishes, and then repeat steps 6, 7. and 8.

10. At the end of a meal period or the end of the day, shut off the power switch. Drain the machine by
removing the overflow strainer. Clean both strainers, the overflow and the inside strainer, of all
foreign debris and build-up and flush out the unit.

•DETERGENT RECOMMENDATION AND RINSE ADDITIVES: We suggest you contact your local
detergent specialists for the correct detergent and rinse additives for the area. To help until one can be
reached, we suggest that you use a non-foaming dishwasher detergent, approximately one-quarter cup
in wash tank. when machine is filled the first time, then one level tablespoon each cycle (or load)
thereafter. This may have to be increased or decreased to obtain satisfactory results.

When manually dispensing powdered detergent in wash tub, always distribute over a sufficient
area to prevent build-up. Some detergent, when dispensed in a small or concentrated area, may
cause deterioration of the stainless tub or sump.

8

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. To remove 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 (be sure to

follow their directions if they vary from these being given) 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, empty the wash water by removing overflow strainer.
f. Replace overflow strainer. Refill machine and allow to run for two minutes, then, again

drain the wash reservoir.
g. Refill as it is ready for regular operation.

2. Clean strainers.

a. Clean around overflow and pump intake strainer holes.
b. Clean around pump intake (toothbrush makes excellent tool for cleaning).

3. Clean Y-strainer on incoming water line. (Water to machine must be turned off for this operation.)
a. Remove plug and clean strainer.

4. Clean rinse tubes.

a. Remove end plugs on lower and upper rinse.
b. Clean all rinse tubes with special brush supplied.

c. If spray holes in the rinse tubes are clogged, they may be cleaned with a pointed tool.

5. Clean wash head assembly.

a. If spray jets are plugged, use pointed tool to dislodge and flush with water.
b. If lodged items still remain in wash tubes, remove wash assembly by first removing

rinse assembly.
c. Clean assembly at sink by flushing water through spray jets.
d. Reinstall wash and rinse assemblies. (See page with instructions.)

6. Clean any deposits which may have built up on exterior moving parts.

9

REMOVAL of RINSE and/or WASH

HEAD ASSEMBLIES

GENERAL INSTRUCTIONS

1. Turn power switch to off position.

2. Open door and drain machine by lifting overflow strainer.

3. When empty, replace overflow strainer.

4. With wrench, remove pipe fitting holding lower rinse feed pipe to machine and remove feed pipe and
rinse head assembly.

5. Locate Alien head set screw in wash head cap, insert Alien wrench and loosen screw by turning
counterclockwise.

6. Turn wash head cap counterclockwise until cap is removed, and put cap in safe place.

7. Remove 1/4" stainless ball bearings carefully and put in a receptacle in a safe place- If any should
drop in machine, you will be able to locate and retrieve if you left the overflow strainer in as suggested
in step #3 above.

8. Lift and remove small manifold with short tubes. Put in safe place.

9. Remove 1/4" ball bearing in similar method to step #7.

10. Lift and remove large manifold with long length tubes similar to step #8.

11. The lower fixed race may be left in place.

12. Clean ball bearings by soaking in de-liming solution.

13. Ball bearing race ways may be cleaned by either brushing with de-liming solution (toothbrush
makes excellent tool) or gently clean by rubbing with fine sandpaper or emery cloth.

14. Rinse ball bearings and manifolds thoroughly.

15. To reassemble, first, fill lower race to capacity with 1/4" ball bearings then remove one. This will give
proper movement needed during rotation of assembly.

16. Replace lower manifold and fill race fully with 1/4" ball bearings. Repeat, removing one only.

17. Replace upper manifolds and repeat necessary parts of step #15.

18. Replace wash cap by screwing on center shaft clockwise, finger tight.

19. Back off wash cap about 1/4 turn and tighten Alien set screw.

20. Rotate manifolds in opposite directions; see if they rotate freely. A rule of thumb is to select the
longest tube in the bottom manifold and make sure it moves up and down at least 1/8" and no more
than 1/4".

10

21. Replace rinse assembly and feed pipe.

22. Close all doors and refill dishwasher.

23. Run through several cycles and recheck wash arms for easy movement. Adjust if necessary.

24. If removal of upper wash or rinse assembly is necessary, then extra care must be taken to support
assembly. It will drop as one unit, but will be subject to falling apart as wash cap is removed.

ITEM

P/N DESCRIPTION
1 0126800 END PLUG
2 0136000 RINSE ARM BODY
3 0133000 NYLATRON WASHER (2 PLACES)
4 0132500 HEX NUT
5 0133500 SNAP RING
6 0137000 LOWER RINSE FEED PIPE
7 0137000 RINSE FEED PIPE COUPLING OR NUT
8 0186500 WASH CAP
9 0187000 WASH CAP SET SCREW

ITEM P/N DESCRIPTION
10 0194000 BALL BEARINGS (3 PLACES)
11 0187500 CENTER SHAFT
12 0200500 SMALL MANIFOLD
13 0194500 SPRAY TUBE (16 PLACES)
14 0201000 LARGE MANIFOLD
15 0193500 FIXED RACE
16 0044700 HOLDING NUT
17 0188500 HOLDING BOLT (BEFORE S/N 4105)
17A 0188601 HOLDING PIN (AFTER S/N 4105)
18

WASH HEAD BASE

TIMER FOR MODEL 150 DISHWASHER!

General Description

The timer is a self-contained (frame-mounted) timer of the repeating cycle type. It is mounted in the
control box 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. 208/220 VAC. In addition to the
clock motor, the timer also contains a driven cam arrangement which operates four 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 60 seconds, allowing one wash and one
rinse operation for each 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 second micro switch is the total cycle circuit
and uses both the NO and NC contacts. The third micro switch controls the wash and uses both the NO
and NC contacts- The 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 IN THE CONTROL BOX OR

WHILE SERVICING THE COMPONENTS IN THE POWER BOX. ALL ELECTRICAL CHECKS SHOULD
BE MADE BY QUALIFIED PERSONNEL

Timer operation can be observed after removing the covers from the control box by loosening the
two screws holding each cover in place.

If it is determined that the timer is defective, it is recommended that a new timer be installed.

However, limited field maintenance can be accomplished as follows:

A frozen contact on a micro switch will be indicated by one function being executed all the time or the

absence of a click when the switch arm is actuated. The micro switch is replaced by:

For Bristol-Saybrook Timer
Remove micro switch by moving terminal end of switch away from cams about 1/4" and pulling switch

straight out. Replace new switch in reverse order.
For Eagle Signal Timer:

1. Remove all wires from the timer, properly tag them to assure proper replacement.

2. Remove the two screws which hold the timer to the control box.

3. One screw holds the micro switches, cams and actuating arms in the frame. This screw is seen on the
side opposite the motor. Remove this screw. NOTE: Be sure to note which cam goes with which micro
switch.

4. The unit can now be taken apart and the defective micro switch replaced.

5. Reassemble. NOTE: The flanges on the cams are such that they only mesh in one direction. The shorter flange on
the cams always points toward the drive motor.

The timers cam drive system is equipped with a clutch to enable one to view the operations of the cams and micro
switches. Remove power to machine BEFORE touching timer. Rotate cams by turning with fingers; cams will turn in
one direction only. Do not force them. As cams actuate switches, listen for the click of the switch or test the switches
with an ohmmeter.

12

DEFECTIVE TIMER 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 connection points.

2. Remove the two screws which hold the motor.

3. Replace the new motor.

4. Re-connect motor leads to proper points.

NOTE: It may be necessary to remove complete timer to replace motor; if so, follow steps 1 and 2 on

previous page.

TYPICAL TIMER SWITCH P/N 0177500

TIMER P/N 0173900

13

FUNCTION of SWITCHES, CIRCUIT

BREAKER and INDICATING LIGHTS

Circuit breaker

P/N 0012000

Power switch
P/N 0162000

Cycle switch

P/N 0158900

Manual Cycle

Switch P/N

0155600

Power light P/N

0083518

Ready light

P/N 0083507

Rated 15 amps, controls power to control circuit only, I.E. timer, relays, solenoid
valve, water-level control and motors. Circuit breaker does not cut off power in
power unit box at incoming terminal board and rinse heater or its relay contacts.
Power is still applied to them when the circuit breaker is in "off" position.

This switch interrupts all power going to the control circuit; this means that all
switches on control panel are inoperable until switch is turned "on."

This switch controls the timer motor and has three positions. The start position
(right-hand side) is spring-loaded and is used to initiate the automatic cycle. In the
event of timer failure, the left side of the switch must be engaged to disable the
timer for manual mode of operation.

This switch is used to initiate either a manual wash or rinse operation as well as
initiate the initial fill of the machine. Depressing the left side of this switch will
cause the wash pump to run until returned to the center position. The prime
purpose of this switch position is to extend the wash period for extremely soiled
dishes before putting them through its normal automatic cycle. The right side of
this switch is spring-loaded and must be held down for manual rinse operation; it
however needs only to be depressed momentarily to initiate the automatic fill of
the machine. Either position may also be used as an emergency back-up should
the timer fail to operate, in which case the cycle switch should be placed in the
manual mode.

This red indicating light remains lit whenever the power switch is on.

This green light comes on only when automatic cycle is ready to start and
extinguishes during cycle.

Wash light P/N

0083501

Rinse light P/N

0083501

This amber indicating light comes on during the wash cycle.

This amber indicating light comes on during the rinse cycle.

14

REPLACEMENT of SWITCHES in

1.

CONNECTION TERMINALS

CONTROL PANEL

There are three switches installed in the control box front panel. These are the power, cycle, and manual
wash-rinse/fill switches.

Before working on machine, it is important that power be turned off at customer's circuit breaker. To
prevent the possibility of electrical shock, trip breaker to "off" position. Then turn machine breaker
"off" located right side of power box.

Remove the cover from the control box by removing the two screws holding it in place. Remove the
electrical cover from within the control box by removing the two screws holding it in place.

If the switch is found to be defective, insert a new one into the cutout in the control box. Replace the
wires from the used switch terminal by terminal onto the new switch.

Power can now be applied to the dishwasher and run through cycles checking all operations.

2. RETAINING CLIPS

3. FRONT PANEL

4. SWITCH BEZEL

5. ROCKER BUTTON

15

THERMOSTAT ADJUSTMENT

THERMOSTAT

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 turn of screw #1 changes the temperature approximately 4°F. If screw #1 is
turned all the way to its stop in either direction, adjust screw #2 as follows. DO NOT TOUCH THE SCREW
SEALED WITH RED PAINT. When adjusting screw #2, power should be disconnected during adjustment.

Set screw #1 so that it can be turned equal distances in either direction, then:

—if screw #1 stopped while turning in CW direction, turn screw #2 in CW direction slowly and
only 1/8 of a turn or less per complete cycle of the unit.

—if screw #1 stopped while turning in CCW direction, turn screw #2 in CCW direction slowly
and only 1/8 of a turn or less per complete cycle of the unit.

Three-fourth's of a turn will bring the thermostat to approximately the same setting obtained where
screw #1 stopped. Check the present temperature setting before attempting any further adjustments. Use
screw #1 for any further adjustments.

. NOTE: Making large moves in adjusting may cause misalignment, thus

increasing the chances that further adjustment cannot be made and the
thermostat will have to be replaced.

P/N 0170023 (WASH)
0170023 (RINSE) (SHOWN)

16

SERVICE INSTRUCTIONS

Bonnet

&

Enclosing Tube

Assembly

Plunger Assembly

"0"

Ring

Coil & Housing

(INCOMING WATER SOLENOID VALVE)

SOLENOID VALVE

TO TAKE THE VALVE APART

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
synthetic seat against the pilot port. Make sure the "O" ring is in
place, then lower the bonnet and enclosing tube assembly over
the plunger. Screw bonnet assembly snugly down on the body
assembly.

Assy. P/N 0144000

P/N 0148500

DIAPHRAGM CARTRIDGE P/N 0145500

P/N 0145500

Diaphragm

Cartridge

Body Assembly

POSSIBLE PROBLEMS
Pilot Port extension #1 clogged

Hole #2 clogged

REMEDY

Pass heated straight pin through hole #2
or clean hole #1

17

RINSE TANK HEATER SYSTEM

FUNCTION

The Rinse Tank Heater System is electrically connected in the circuit so that it is dependent upon
the dishwasher being properly filled with and maintaining a safe water level. The automatic fill system,
therefore, should operate properly before the heat system can be engaged. The circuit is controlled by
a power switch (mounted on the front control panel), a thermostat (mounted behind the lower front
panel), a water level control (mounted in the control box), and a heater relay (mounted in the control
box), with the coil being activated by the thermostat.

INDICATORS OF POSSIBLE MALFUNCTION

Once the machine has been properly filled, the heat circuit should operate by merely turning on
the power switch. Should the rinse tank heat, be it either too high, too low, or no indication of
temperature at all, the following checkouts should be made.

CHECKOUT OF HEATER SYSTEM FOR RINSE TANK (Refer to drawing, figure 1)

NOTE: THE FOLLOWING CHECKOUTS SHOULD BE DONE BY A QUALIFIED SERVICE

PERSON OR ELECTRICIAN.

1. If temperature is too high: adjust thermostat, using thermostat instructions in this manual.

2. If temperature is too low. adjust thermostat as above, then:

a. Turn off power to machine by tripping customer circuit breaker to "off" position.
Turn off machine circuit breaker located on right side of power box.
b. Remove lower cover plate on power box (held by single screw).
c. Make sure rinse temperature is below 180° (preferably about 140°).
d. Turn on both circuit breakers. Observe heat relay (3 or 4 pole, mounted lower left inside

power box) while power switch is turned "on" and "off." If relay contacts move in and
out, see instructions under "B"; if not, proceed with "A."

A: If heat relay does not close:

1. There is an insulated movable bar on the relay across the top of the four contacts. With
insulated probe, depress this bar and observe the rinse thermometer; the temperature should
rise noticeably in a minute or two. If it moves very slowly, it would indicate that one or more
elements are faulty. If it moves constantly higher at a good rate, elements are okay.

NOTE: A check with an amp probe (if available) at position shown in fig. 1, can be made. Each element
should draw 26-28 amps with a total approximate amperage draw of 52-56 amps for both elements.
(Single phase). Replace any defective elements.

A. 2. With power switch on:

a. Check position 1, figure 1. Voltage should be 208-230; if not, checkout heat

switch and replace if necessary.
b. Check position 2; there should be no voltage.
If there is, readjust thermostat per thermostat adjustment instructions.
c. Check position 3; voltage should be approximately 120V to ground.
d. If voltage being applied on positions 1, 2, and 3 checks out okay, then the relay
should be replaced. Coil is probably defective.

18

If heat relay closes:

1. Check power supply at incoming terminal board L1 and L2. It should be 208-230V,
approximately.

2. Check power at positions 4 and 5, fig. 1. Voltage should read approximately 208-230V; if not,
check wires for breaks or bad connections.

3. Check power at positions 6 and 7. Voltage should be approximately 208-230V. If not, check
wires for breaks or bad connections.

4. Temperature should rise as explained in A1 and amperages may be checked according to
those instructions. Replace any defective elements.

FIGURE NO. 1 RINSE HEATER SYSTEM
A. POWER SWITCH
B. WATER LEVEL CONTROL
C. THERMOSTAT
D. HEATER RELAY
E. RINSE TANK HEATERS
F. AMPROBE TEST POSITION
X. TERMINAL BOARD (9 TERMINALS)

SINGLE PHASE

19

WASH TANK HEATER SYSTEM

FUNCTION

The Wash Tank Heater System is electrically connected in the circuit so that it is dependent upon
the dishwasher being properly filled with and maintaining a safe water level. (As an additional safety
precaution, never leave the machine turned on without adequate water nor drain the machine without
first turning off the power switch.) The circuit is controlled by a power switch (mounted on the front
control panel), a water level control (mounted in the power unit box), a thermostat (mounted behind the
lower front panel), and a heater relay (mounted in the power unit box), with the coil being activated by
the thermostat.

INDICATORS OF POSSIBLE MALFUNCTION

Once the machine has been properly filled and the heat system engaged, the heat circuit
should operate by merely turning on the power switch. Should the wash tank be either too high, too
low, or no indication of temperature at all, the following checkouts should be made.

CHECKOUT OF HEATER SYSTEM FOR WASH TANK (Refer to drawing, fig. 2)
NOTE: THE FOLLOWING CHECKOUTS SHOULD BE DONE BY A QUALIFIED SERVICE

PERSON OR ELECTRICIAN.

1. If temperature is too high: adjust thermostat, using thermostat instructions in this manual.

2. If temperature is too low: adjust thermostat, using thermostat instructions in this manual.

3. If step one or two does not correct the problem, proceed as follows:

a. Turn off power to machine by tripping customer circuit breaker to "off" position. Turn machine

circuit breaker on right side of power unit box to "off."
b. Remove cover from power unit box.
c. Reapply power to unit.
d. Wash tank must be emptied, then refilled for each checkout.
e. Wash temperature must be 130 degrees or less. Observe wash heater open switching relay (two

pole), located top relay on left side. Turn power switch on and off; if relay contacts move in and

out, see instructions under BB, if not, proceed.

AA. If heat relay doesn't close:

1. There's an insulated bar across the top of two contacts. With insulate probe, depress this bar
and observe wash thermometer; temperature should rise slowly. Watch for approximately five
minutes; if temperature doesn't rise, replace element. If amprobe E is used, the element should
draw approximately 7 amps.

2. With power switch on:

a. Check position 1, figure 2. Voltage should be 208-230V. If not, check out and

replace heat switch.

b. Check position 2; there should be no voltage. If there is, readjust thermostat per

thermostat adjustment instructions.

c. Check position 3; voltage should be approximately 120V to ground.
d. If voltage being applied on positions 1, 2, and 3 checks out okay, then the relay

should be replaced. Coil is probably defective.

20

BB. If heat relay does close:

D.

B.

1. Check power supply at terminal board #2 between terminals #5 and #7; it should be
approximately 208-230V.

2. Check power at position 4; there should be no voltage.

3. Check position 5; voltage should be approximately 120V to ground.

4. Check power at position 6; voltage should be 208-230V approximately; if not, check wires for
breaks and bad connections.

5. Temperature should rise as explained in AA1 and amperages may be checked according to
those instructions. Replace any defective elements.

FIGURE NO. 2 WASH HEATER SYSTEM
A.

POWER SWITCH
WATER LEVEL CONTROL

C.

THERMOSTAT

HEATER RELAY

E.

AMPROBE TEST POSITION

F.

WASH TANK HEATER

X. TERMINAL BOARD (9 TERMINALS)

21

REPLACING SEAL and CERAMIC

on WASH PUMPS

FUNCTION

The pump is part of the total motor-pump system and utilizes one shaft seal and ceramic to prevent
the pump from leaking around the impeller and shaft. One gasket is used to prevent leakage between
the pump mounting plate and the machine pump plate.

REPLACEMENT OF SEAL AND/OR CERAMIC

1. Remove the power source to the machine by turning the circuit breaker to its "off" position on the
side of the power unit box.

2. Drain the machine by removing the overflow strainer in the wash tank.

3. Support the motor—remove the four nuts holding the pump/motor to the machine's pump plate.

4. Carefully pull motor outward, move from side to side as required to remove from machine.

5. Set motor and pump on a sturdy stand close to machine or remove wires and conduit to allow
motor/pump to be moved to a better work station.

6. Insert a firm object into the blades of the fan and use a 5/16" ratchet to remove bolt holding impeller.
After the bolt is removed, pull the impeller up and off of the shaft.

7. The ceramic is embedded in the pump mounting plate and usually does not need
replacement, but the seal normally would when water leaks around the motor shaft area. If
replacement of either is required, proceed as follows:
a. Remove the four bolts holding the pump mounting plate to the motor.
b. Slide the mounting plate up and off of the shaft and motor. The embedded ceramic and shaft

seal will be removed with the mounting plate.

c. Turn over the plate and push the seal and/or ceramic out of the housing carefully. It

may be necessary to break the ceramic to remove it.
d. Clean the hole where the ceramic was installed.
e. Lightly coat with a lubricant around the new ceramic's edges and "0" ring. Gently

press the ceramic into place against the snap ring in the housing. Make sure that the

grooved side of the ceramic faces the motor and housing snap ring, leaving the

smooth side toward the impeller.
f. Make sure that the woodruff key is in place in the shaft and then set the plate back on

the motor over the shaft.
NOTE: A field tool can be made (to ease installation of seal) from a pipe or tube (3/4" CPVC typical
example) that has proper outside and inside dimensions. It must fit over step down in shaft, but be
close to larger shaft size on outside. To accommodate woodruff, cut long slot in tube. Lubricate tube
slip seat over tube onto shaft.
g. Lightly coat with a lubricant the new seal face, and gently press it into place over the . shaft with

the seal face against the ceramic. SEE NOTE ABOVE.

h. Place the spring over the shaft with the metal cap up. Press the impeller down onto

the shaft, aligning the keyway of the impeller with the woodruff key.

i. Tighten the impeller washer, lockwasher, and bolt into place. Replace the four bolts

that hold the mounting plate to the motor.

8. Reinstall the pump and motor in the unit by reversing steps one through eight (it is suggested that a new pump

gasket be installed).

IMPELLER ROTATION:

WHEN FACING THE IMPELLER AFTER MOUNTING IT ON THE MOTOR SHAFT, THE IMPELLER SHOULD
TURN IN A CCW DIRECTION.

22

Next Page

WASH PUMP

–

ASSEMBLY P/N

0102000

ITEM P/N DESCRIPTION

1 0102700 PUMP MOTOR
2 0106500 WOODRUFF KEY
3 3691300 WASHER, RUBBER
4 0108000 SNAP RING
5 0105000 CERAMIC FACE w/"O" RING
6 0104500 PUMP MOUNTING PLATE
7 0105000 SEAL FACE
8 PLATE TO MOTOR MOUNTING

BOLTS & LOCKWASHERS

9 0105000 SEAL ASSEMBLY (SEAL SPRING & CUP WASHER)
10 0105500 PUMP IMPELLER
11 0107500 IMPELLER WASHER
12 0107000 IMPELLER BOLT & LOCKWASHER
13 0106000 PUMP MOUNTING GASKET

REPLACING SEAL and CERAMIC

on RINSE PUMPS

FUNCTION

The pump is part of the total motor-pump system and utilizes one seal and ceramic to prevent the
pump from leaking around the impeller and shaft. One gasket is used to prevent leakage in between the
pump mounting plate and the machine pump plate.

REPLACEMENT OF SEAL AND/OR CERAMIC

1. Remove power source to machine by turning circuit breaker to its off position on side of power unit
box.

2. Drain machine by removing overflow strainer in wash tank.

3. Support motor - remove the four nuts holding the pump/motor to the machine's pump plate.

4. Carefully pull motor outward, move from side to side as required to remove from machine.

5. Set motor and pump on a sturdy stand close to machine or remove wires and conduit to allow
motor/pump to be moved to a better work station.

6. Remove dust cap over end of motor shaft (opposite impeller end). This can be done by wedging
with a screwdriver.

7. Remove impeller - hold shaft by inserting screwdriver in slotted end of shaft and unscrew impeller in
counterclockwise direction.

8. The ceramic is embedded in the impeller and normally does not need replacement, but it should be
checked for cracks or a worn out surface. If ceramic does need replacement, proceed as follows.

(a) With a pointed, flat tool, work the ceramic and rubber cup out of groove in impeller.
(b) Clean groove of all residue.
(c) Apply small amount of adhesive in groove.
(d) Press new ceramic gently into groove with rubber cup leading the way. (NOTE:

THE CERAMIC HAS ONE SIDE THAT IS GROOVED. THIS SIDE SHOULD BE FACING
DOWN INTO THE RUBBER CUP. THE SMOOTH SURFACE SHOULD BE FACING UP.)

9. The seal is embedded in the pump mounting plate and usually will need replacement when water
leaks around motor shaft area. If replacement is required, proceed as follows.

(a) Remove four bolts holding pump mounting plate to motor, must be done with Alien wrench.
(b) Slide mounting plate up off of shaft and motor.
(c) Press seal out of housing carefully.
(d) Clean hole where seal was installed.
(e) Apply a small amount of non-hardening sealant to back side of seal. Insert new seal with a

seal driver to prevent ruffling the edges of seal. Never use screwdriver or similar tool to
alternately force edge of seal in place.

10. Reassemble pump and motor by reversing the above procedure.

24

PUMP & MOTOR ASSEMBLY

P/N 0085000

ITEM P/N DESCRIPTION ITEM P/N DESCRIPTION

1 0086000 PUMP MOTOR 7 0090500 PUMP PLATE TO MOTOR
2 0088000 PUMP MOUNTING PLATE MOUNTING BOLTS
3 0089000 PUMP CERAMIC FACE 8 0091000 MOUNTING PLATE LOCKWASHERS

W/RETAINER CUP 9 0091000 PUMP MOUNTING PLATE TO BASE
4 0087500 PUMP IMPELLER SEAL LOCKWASHERS
5 0089500 PUMP IMPELLER 10 0091500 PUMP MOUNTING PLATE TO BASE
6 0090000 PUMP MOUNTING GASKET NUTS

25

INSTRUCTIONS for ADJUSTING

TENSION of CANTILEVER

PROBLEM: Doors raise hard. but lower easily.

SOLUTION: 1. Back off (loosen) upper adjusting nuts (F) on both eyebolts (E) about two or three

complete turns.

2. Tighten lower adjusting nuts (G) on both eyebolts (E) a complete turn.

3. Check door for easy operation. Adjust further, if necessary.

4. When adjustment is completed, tighten upper adjusting nuts (F) down against
angle to lock in position. Check both eyebolts.

PROBLEM: Doors raise easily, but lower hard.
SOLUTION: 1. Back off lower adjusting nuts (G) carefully, making sure there is still some

thread on eyebolt available (both eyebolts).

2. Check door for easy operation. Adjust further, if necessary.

3. When adjustment is complete, tighten upper adjusting nuts (F) down against angle

to lock in position. Check both eyebolts.

PROBLEM: Doors sticking, or are hard to move up and down.
SOLUTION: 1. Raise doors.

2. Clean inside door channels on machine with a good cleaning compound. It may be
necessary to remove doors to completely clean channel. If so, remove only one
door at a time. Make sure cantilever has stop to prevent pulling other door up and
out of channel. If it does not have stop, secure cantilever arm to machine with
doors in the closed position.

3. Build-up should be completely removed so it may be necessary to use an abrasive
pad (non-metallic) to clean.

4. While you have the door out of channel, make sure it is not dented or crooked. If
channel is crooked or dented, use 1/2" wide block to spread to proper opening.

5. Clean nylatron runners on the doors or replace nylatron, if excessively worn. See
instructions on door runners.

6. Check door channels on machine for evenness and burrs.

7. After replacing doors, check for proper operation by raising and lowering with
cantilever.

PROBLEM: One side of door higher than other and does not close completely. SOLUTION:

1. Straighten cantilever arm.

2. This can sometimes be accomplished while arm is on machine by

forcing down on the arm connected to the high door while the other side of the
cantilever is pulled up.

3. If step two cannot be accomplished on machine, cantilever will have to be removed
and straightened.

26

Next Page

27

APPLYING NYLATRON STRIP TO

Fig.

1 •

PUT A STREAM OF SILASTIC

150 SERIES DOOR

P/N 0051800

INSTRUCTIONS FOR INSTALLING NEW DOOR GUIDES

ITS IMPORTANT WHEN REMOVING THE OLD DOOR GUIDES THAT THE SURFACE BE CLEANED
THOROUGHLY. THIS CAN BE DONE WITH A SOLVENT THAT WILL DISSOLVE THE REMAINING
GLUE AND/OR THE USE OF A FINE SANDPAPER TO SCRATCH THE SURFACE WHERE THE DOOR
GUIDE WOULD MAKE CONTACT WITH THE STAINLESS STEEL DOOR.

AFTER THIS IS ACCOMPLISHED AND YOU ARE QUITE CONVINCED THAT THE SURFACE IS
CLEANED OF ALL OIL, GLUE, DIRT, DETERGENT, ETC.. THEN THE DOOR GUIDE SHOULD BE
PLACED ON A FLAT SURFACE AND A BEAD OF A SILICONE ADHESIVE OR ANY GOOD NON­HARDENING GLUE SHOULD BE LAID ON THE INSIDE OF THE DOOR GUIDE'S SURFACE (TOP
AND BOTTOM, MAKING SURE THAT NONE OF THE EXPOSED SURFACE TO THE OUTSIDE HAS
ANY GLUE ON IT).

TAKE THE DOOR GUIDE AND SNAP IT OVER THE DOOR'S EDGE AS DESCRIBED IN THE
ATTACHED SKETCH. DO NOT SLIDE UP THE EDGE. LET THIS DOOR SET FOR AT LEAST ONE
HOUR BEFORE USE SO THAT THE GLUE OR ADHESIVE HAS A CHANCE TO SET SOMEWHAT.

IF THESE INSTRUCTIONS ARE FOLLOWED, THE DOOR GUIDES SHOULD ADHERE TO THE DOOR.

OR NON-HARDENING ADHESIVE IN
INSIDE CORNER OF STRIP.

Fig. 2 • SIDE VIEW OF
NYLATRON STRIP.

Fig. 3 - SNAP STRIP ON DOOR
UP.

NOTE: DO NOT SLIDE STRIP
FROM END;
ALWAYS SNAP ON.

Fig. 4 • PRESS DOWN WITH THUMB
AND INWARD WITH FINGERS.

Fig. 5 - FINISHED
APPLICATION -END
VIEW.

28

WATER LEVEL CONTROL (ELS)

(FOR RINSE TANK) P/N 0205000

FUNCTION

The Water Level Control device utilized on power rinse (PRB) models only, automatically maintains
the water level in the rinse tank. The rinse tank water level control is energized by the power switch.
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, opening the normally closed circuit to the solenoid, which stops the water
flow to the rinse tank.

When water is removed from the tank by the rinse pump, the sensing probe will alert the water
level control by signal to deactivate and return the contact points on relay (in clear plastic case) to the
normally closed position, allowing power to be reapplied to the solenoid valve. Water will again flow into
rinse tank until proper level is reached and maintained.

CHECKOUT

NOTE: ALL ELECTRICAL CHECKS SHOULD BE MADE BY QUALIFIED SERVICE
PERSONNEL OR ELECTRICIAN.

If one of the following problems exist, this control should be checked out as shown below:

1. Water to rinse tank runs continually with the power switch on.

2. Water does not flow into rinse tank when required.

PROCEED WITH CHECKOUTS:

1. Remove power source to machine by moving breaker to "off" position.

2. Remove 2 screws holding cover on power unit box and remove cover.

3. Locate the water level control for the rinse tank circuit (sketch below). Remove, mark, and insulate
for easy replacement wires going to letters C and H on control.

4. Reapply power and turn on power switch.

5. With insulated wire, connect jumper wire between terminals C and H (24 Volt system).

6. If relay (inside clear plastic case marked "X" on drawing below) operates, then the water level
control action can be deemed operational, and other causes should be explored (see trouble
shooting section).

7. If relay doesn't operate, then check relay coil continuity. Replace relay or complete control, as
necessary.

8. Remove power source once again and replace wires removed in (3) to original terminals or new
control, if replacement was made.

29

WATER LEVEL CONTROL (ELS)

(INITIAL FILL AND HEAT CIRCUITS) P/N 0205000

FUNCTION

This control is activated when the power switch is turned on. The primary function is to
automatically control the proper initial filling of the wash tank, then to activate the wash and rinse tank
heat circuit. It will also provide cutoff of the wash and rinse heat circuit, should the water be accidentally
drained from the machine (with the power switch still on). The power switch should always be turned off
before draining.

This water level control is used in conjunction with two probes (sensors), power switch, fill switch,

rinse relay, thermostat(s), heat relay(s), solenoid or rinse motor.

When the power switch is turned on, the normally closed circuit in the plug-in relay is energized.
As the fill switch is depressed and released, the rinse relay contacts close, and the solenoid (or rinse
pump on PRB model) opens and water flows into wash tub. As the water rises in the wash tub, it will
cover first the lower probe (directly above wash element) then reach the upper probe. At this time, the
plug-in relay coil will be activated and open the normally closed contacts, de-energizing the solenoid (or
rinse pump). Simultaneously, the contacts will close on the normally open circuit, energizing the wash­rinse heat circuit. (Checkout and information concerning that part of the circuit are in the wash heater
system or rinse heater system instruction page of this manual.)

If the water should be drained from the machine while the power switch is still on, the lower probe
will sense the lack of water and de-energize the plug-in relay, which will de-energize the wash-rinse
heat circuit. DO NOT DEPEND ON THIS—always turn power switch off before draining.

SYMPTOMS OF LEVEL CONTROL FAILURE:

1. Fill does not take place unless rinse switch is depressed until full.

2. Initial fill does not stop when it reaches overflow, but continues.

3. Wash-rinse heat circuit does not activate.

4. Wash heater remains on (if wash water accidentally emptied with power switch on.)

PROCEED WITH CHECKOUT:

1. Remove power to machine by turning customer circuit breaker to its "off" position. Turn machine
circuit breaker, located on right side on power unit box, to "off."

2. Remove 2 screws holding cover on power unit box and remove cover.

3. Locate initial fill and wash-heat circuit water level control board and disconnect wires going to
terminals marked C, H, and L Mark and insulate wires for replacement.

4. Be sure wash tank is empty and power switch is off. Carefully reapply power to machine. Begin
by turning power switch on. With an insulated jumper wire, touch jumper between terminals C &
H; relay in clear plastic cube should activate as wire is touched to terminals. Observe relay
contacts—they should pull in. If they do, remove wire and they should return to original position.
Repeat several times to verify action. Reconnect wires removed.

30

5. If relay operates, the control can be deemed operational and other causes should be explored.
EXAMPLES: 1. Loose or broken wire to probe or ground (green wire).

2. Dirty probe(s).

3. Solenoid faulty (see instruction page concerning solenoid).

4. Thermostat faulty or needs adjustment (see instruction page concerning
thermostat).

5. Wash element faulty (see instruction page concerning wash-heat checkout).

6. If relay does not operate, check voltage being applied to L1 - L2 marked on control. It should be
208-230V. Replace control, if necessary.

7. In any case, always locate sensor (probes) inside wash tub and clean off all deposits (instruct
customer; this should be at least a weekly project).

8. Remove power to machine and replace panel and any wires that were not replaced previously.

31

TROUBLE SHOOTING GUIDE

PROBLEM CAUSE SOLUTION

Nothing on machine operates. 1. No Voltage to dishwasher

a. Customer's fuse blown or circuit

breaker tripped.

2. Machine circuit breaker tripped or

Will not fill with electrical power
applied even though other

components work. (B Model)

turned off.

3. Voltage to machine low or circuit to

machine broken.

1. Water hand valve off.

2. Power switch not on or faulty.

3. Fill switch faulty or loose wire

connection.

4. Solenoid valve does not operate. 4. See instruction page concerning the

5. Water level control faulty. 5. See page on Water Level Control.

6. Y-strainer clogged. 6. Turn water to machine off, remove

a. Replace or reset.

2. Turn on or reset.

3. Contact your electrician and/or power

company for repair.

1. Turn hand valve on.

2. Turn on or replace.

3. Replace switch or wire or connection

terminal.
Solenoid Valve.

plug & strainer screen, clean & replace.

Will not fill with electrical power
applied even though other

components work. (PRB Model)

1. Customer's water hand valve

off.

2. Power switch not on or faulty.

3. Fill switch faulty or loose wire

connection.

4. Rinse motor not operating. 4. Check connection and voltage to

5. Water level control does not maintain

the water level in the rinse tank.

6. Solenoid Valve does not operate. 6. See instruction page concerning

7. Y-strainer clogged. 7. Turn off water to machine, remove

32

1. Turn hand valve on.

2. Turn on or replace.

3. Replace switch or wire or connection

terminal.

motor. Repair or replace as necessary.

5. See instruction page concerning the

Water Level Control for PRB Models.
Solenoid Valve.

plug, prepare to catch hot water &

strainer screen, clean & replace.

TROUBLE SHOOTING GUIDE

PROBLEM CAUSE SOLUTION

Fills slowly and/or rinse is 1. Low water pressure. 1. Check water pressure by:
weak.

2. Rinse head assemblies limed 2. Clean rinse head tubes.
up or clogged with other See instruction page

deposits. on Preventive Maintenance.
Rinse water runs continuously 1. Rinse switch sluggish 1. Replace.
with power on. or faulty.

2. Solenoid Valve dirty 2. See special instruction

or faulty. page concerning Solenoid

3. Water level control 3. See special instructions

faulty (PRB Models page concerning Water

only). Level Control for

4. Rinse tank probe 4. Remove & clean probe,

coated (PRB Model). then replace.

5. Breather tube plugged 5. Clean tube or repair.

or bent closed (PRB

Model only).
Rinse water runs with 1. Water pressure excessive. 1. Check using pressure
no electrical power
applied to solenoid
(power switch off).

2. Solenoid Valve diaphragm 2. See instruction page con-

breather hole clogged. cerning Solenoid Valve.

a. Turn power switch off.
b. Empty wash tub.
c. Replace overflow strainer,
close doors.
d. Turn on power switch.
e. As you depress fill
switch, time the seconds
it takes to fill machine to
within 1/4" of top of the
overflow tube. It should
be 60 seconds. Any more
than 5 seconds longer
indicates the water
supply & pressure
insufficient.

Valve.

PRB Models.

gauge during flow
period (solenoid
valve open) should
read 20 PSI, if in excess
installation of a Pressure
Reducer can reduce
pressure.

33

TROUBLE SHOOTING GUIDE

PROBLEM CAUSE SOLUTION

Machine won't work on automatic.
Wash and rinse work only on manual.

Machine will not automatically fill. 1. Power is Off. 1. Check incoming line fuses circuit

1. Timer motor faulty. 1. Remove control box covers and

observe timer operation. See
instruction page for Changing Timer

Motor.

2. Power switch faulty.

3. Cycle switch in manual (left-hand)

position.

2, Wire loose or broken to L1 and L2. 2. Check line voltage at L1 and L2 on

3. Power switch faulty. 3. Replace.

4. Water level control faulty. 4. To check water level control, see

5. High fill probe. 5. Clean or short out probe end to tank;

2. Replace switch.

3. Position switch in center position

and depress start.
breakers.

water level control and control panel.

special instructions on Water Level

Control.

this will cause the relay on the water
level control to close and return. If this
does not happen, check for loose wire

especially a loose ground wire.

Wash motor does not operate on
automatic or manual, but machine

rinses properly.

6. Electric solenoid valve not opening. 6. Check electric solenoid valve, see

special information section under

Solenoid Valve.

1. Broken or loose wire from terminal

board to motor.

2. Wash motor faulty.

34

1. Check for loose or broken short

circuit.

2. Repair or replace.

TROUBLE SHOOTING GUIDE

on auto

matic and washes on

on without operating start

switch.

2.

Start switch faculty.

2.

Replac

e.

through complete cycle.

machine fails to wash

160°

is not maintained.

tank, check wash heater

freed in this manner, take

machine. Clean scale off

scale solvent. See Preventive

Assemblies.

PROBLEM CAUSE SOLUTION

Wash motor does not operate 1. Wash micro switch in timer 1. Check timer, see instruction

on automatic, but rinses

manual.

Machine begins to wash 1. Timer motor, micro switch 1. Check timer, see instruction

when power switch is turned

Machine goes through entire 1. Wash micro switch faulty. 1. Check timer, see instruction

cycle and shuts off but washes
Wash reservoir does

not remain full.

Wash motor runs, but 1. Wash temperature of 150°- 1. Adjust thermostat on wash

faculty.

faulty.

3. Cycle relay faulty.

1. Large overflow strainer
not properly seated.

2. Bottom of strainer (conical 2. Replace strainer.

end of tube) bent out of

shape.

3. Dirt or mineral deposits in 3. See instruction page on
strainer hole. Preventive Maintenance.

page on Timer.

page on Timer.

3. Replace.

page on Timer.

1. Check '0' ring in drain
fitting - Put strainer in

tightly.

satisfactorily.

element.

2. Inadequate or improper 2. Use recommended detergent,

detergent being used.

3. Pump intake strainer is dirty. 3. See Preventive Maintenance.

4. Wash tubes not turning. 4. The wash assembly can

35

see Machine's Operation

instructions.

usually be freed by bearing
down on the wash assembly
and rotating back and forth.
If the assembly can't be

the wash assembly apart
and the bearing races, using
care not to lose the bearings
or drop them into the

part with recommended
Maintenance & instruction

for Removal of Wash Head

Next Page

TROUBLE SHOOTING GUIDE

PROBLEM CAUSE SOLUTION

Wash Pump leaks. 1. Impeller seal is worn (leaks around shaft). 1. Remove and inspect pump and motor

assembly, see instruction page on Pump

Seats and Ceramic Replacement.

Rinse and fill switch is on, but water does

not come through rinse tubes.

When power switch is on, rinse runs

continually.

Machine goes through entire cycle and
shuts off, but rinses throughout the cycle.

Power switch off, rinse runs continually as

soon as power is applied to machine.

2. Pump assembly is not seated to base of

machine (leaks around mounting plate).

1. Valve in water line is not open.

2. Rinse tubes are clogged.

3. Strainer in water line is full of scale. 3. See Preventive Maintenance.

4. Rinse and fill switch faulty. 4. Check rinse and fill switch.

5. Electric solenoid diaphragm or plunger not

operating.

6. Coil on the solenoid valve is burned out. 6. See #5 above.

7. Insufficient or excessive pressure. 7. Check flow pressure which should not

1. Water level control faulty. 1. Check instruction page on water level

1. Defective rinse micro switch. 1. Check Timer instruction page

1. Power & rinse switch faulty.

2. Loose green ground wire from water

level control.

2. Replace gasket. Make sure mounting

nuts are tight.

1. Check to make sure all valves

are open.

2. See Preventive Maintenance.

5. Remove diaphragm and plunger, flush
and clean, see instruction page on

Solenoid Valves.
exceed 25 PSI or go below 15 PSI.

controls.

1. Replace rinse and/or power switch.

2. Tighten ground wire or see

instruction page on Solenoids.

Extremely high rinse temperature

indication.

1. Thermostat set too high. 1. Adjust thermostat control, see

instruction page on Thermostat.

2. Thermostat faulty. 2. Replace.

36

TROUBLE SHOOTING GUIDE

PROBLEM CAUSE SOLUTION

Low rinse temperature 1. Machine using more water 1. If this trouble occurs, it
indication. than normal by rinse running should be determined that

Water leaks from top 1. Spray arms are not moving 1. See instruction page on
of door. freely or ends bent down preventive maintenance -

Machine wash and rinse 1. Timer defective and stopped 1. Move cycle switch to left­do not operate. in timed cycle. hand position (cycle switch

Machine does not 1. Circuit breaker tripped. 1. Reset circuit breaker on wall
operate at all.

throughout wash cycle, the rinse is running during
caused by faulty rinse micro the wash cycle by inspecting
switch in timer. the rinse solenoid and by.

disconnecting the wash
motor lead at the terminal
board on the control panel.
See instruction page on
Timer.

2. Incoming water supply not 2. Provide adequate supply of
hot enough. hot water, see specifications

sheet.

3. Power switch faulty. 3. Check power switch.

4. Setting on thermostat 4. Try new setting. Move the
control has been moved from thermostat control counter­original factory setting. clockwise for higher setting.

5. Thermostat faulty. 5. Check thermostat, see
instruction page.

6. Heater faulty. 6. Check heater, see
instruction page.

7. Contactor faulty. 7. Check contactor, see
instruction page.

8. Thermometer faulty. 8. Remove thermometer and
check in hot water against
an accurate thermometer.

ward. pull upward on ends of

longest wash spray arms 1/2".

is three position) RIGHT ­Start. CENTER - Auto, LEFT ­Manual. See instruction
page on Timer.

panel. Check voltage to
machine at 6 and 10 at
terminal board #TB2.

37

TROUBLE SHOOTING GUIDE

PROBLEM CAUSE SOLUTION

Rinse pump leaks. PRB Models only.

1. Impeller seal is worn. 1. See instruction page on Ceramic

Replacement.

2. Impeller ceramic is worn or scored. 2. Same as 1.

Indicator light(s) does not glow at any

time.

None of the automatic functions work

(wash, rinse).

Vacuum breaker leaks. 1. Limed up. 1. Disassemble:

1. Light(s) faulty or poor connection. 1. Replace or correct connection.

1. Start switch faulty. 1. Check switch. Replace if

necessary, see instructions page
concerning Replacement of Switches

in Control Panel.

2. Wire connections poor. 2. Correct connections.

3. Timer rinse or wash micro switch

faulty.

3. See instruction page concerning

Timer & Motor.

a. Remove top using flat jaw

wrench or channel locks.
b. Remove poppet.
c. Clean poppet & V.B. top &

body.
d. Replace parts removed.

2. Faulty. 2. Replace needed parts or whole VB.

38

ITEM P/N DESCRIPTION ITEM P/N DESCRIPTION

1 0006901 BOOSTER TANK 12 0012000 CONTROL CIRCUIT PROTECTION
2 0058000 WASH TANK HEATER DEVICE
3 0151000 INSIDE PUMP STRAINER 13 0102000 WASH PUMP & MOTOR
4 0152000 LARGE OVERFLOW STRAINER 14 0165500 CUSTOMER'S ELECTRICAL
5 0047500 FRONT DOOR CONNECTION
6 0050900 DOOR HANDLE 15 CUSTOMER'S WATER CONNECTION
7 0008901 CANTILEVER ARM 16 0085000 RINSE PUMP & MOTOR (PRB ONLY)
8 0184301 VACUUM BREAKER 17 0083300 ADJUSTABLE FOOT

9 0169200 WASH & RINSE THERMOMETERS 18 0030600 POWER BOX B
10 0020400 CONTROL BOX & PANEL 0030700 POWER BOX PRB
11 0169400 THERMOSTAT BOX 19 DETERGENT DISPENSER FITTING

39

ITEM P/N DESCRIPTION ITEM P/N DESCRIPTION

1 0085000 RINSE PUMP & MOTOR (PRB ONLY) 12 0011500 CANTILEVER DOOR COUPLER
2

CUSTOMER'S WATER CONNECTION 13 0007500 BREATHER TUBE (PRB ONLY)

3 0030700 POWER BOX 14 0009000 CANTILEVER SPRING
4 0012000 CONTROL CIRCUIT PROTECTION DEVICE 15 0084500 WATER LEVEL PROBE (PRB ONLY)

5 0102000 WASH PUMP & MOTOR 16 0006901 BOOSTER TANK
6

7

DETERGENT DISPENSER FITTING 17 0009400 CANTILEVER EYE BOLTS

CONTROL BOX CONDUIT 18 0083300 ADJUSTABLE FOOT
8 0008901 CANTILEVER ARM 19 0009100 YOKE ASSEMBLY
9 0184301 VACUUM BREAKER 20 0010000 SLEEVE

10
11 0008700 CANTILEVER SPRING RODS

EXTERNAL VACUUM BREAKER PIPING 21 0049000 SPACER

40

ITEM P/N DESCRIPTION ITEM P/N DESCRIPTION

1 CUSTOMER'S WATER CONNECTION 11 0008700 CANTILEVER SPRING ROD
2 0165500 CUSTOMER'S ELECTRICAL CONNECTION 12 DETERGENT DISPENSER FITTING
3 0030700 POWER BOX 13 EXTERNAL VACUUM BREAKER PIPING
4 0012000 CONTROL CIRCUIT PROTECTION DEVICE 14 0009000 CANTILEVER SPRING
5 0084300 HIGH WATER PROBE 15 0102000 WASH PUMP & MOTOR
6 0169200 WASH & RINSE THERMOMETERS 16 0007500 BREATHER TUBE (PRB ONLY)
7 0011500 CANTILEVER DOOR COUPLER 17 0084500 WATER LEVEL PROBE (PRB ONLY)
8 0008901 CANTILEVER ARM 18 0085000 RINSE PUMP & MOTOR (PRB ONLY)
9 0047500 SIDE DOOR 19 0083300 ADJUSTABLE FOOT

10 0184301 VACUUM BREAKER

41

1

9

2

10

15

LEFT SIDE VIEW

150PRB

ITE

P/N
0006901 BOOSTER TANK

3 0009000 CANTILEVER SPRING 11 0011500 CANTILEVER DOOR
4
5 0008700 CANTILEVER SPRING ROD 13 0200000 LOWER WASH HEAD
6 0136000 UPPER RINSE HEAD ASSEMBLY 14
7

0200000 UPPER WASH HEAD ASSEMBLY

8 0184300 VACUUM BREAKER 16 0083300 ADJUSTABLE FOOT

DESCRIPTION

DETERGENT SENSOR FITTING
EXTERNAL VACUUM BREAKER PIPING 12 0136000 LOWER RINSE HEAD

ITEM

42

P/N
0047500 SIDE DOOR
0008901 CANTILEVER ARM

DESCRIPTION

WASH TANK
DRAIN OUTLET

BOTTOM

VIEW

150PRB

ITEM P/N DESCRIPTION ITEM P/N DESCRIPTION

1 0083300 ADJUSTABLE FOOT 7 0012000 CONTROL CIRCUIT PROTECTON DEVICE
2 0006901 BOOSTER TANK 8 0153700 "Y" STRAINER
3 DETERGENT SENSOR FITTING 9 0143000 SOLENOID VALVE
4 WASH TANK 10 0102000 WASH PUMP & MOTOR
5 DRAIN OUTLET 11 0085000 RINSE PUMP & MOTOR
6 0030700 POWER BOX

43

HIGH LEVEL

5

ITEM

P/N DESCRIPTION

1

0153700

"Y" STRAINER

3

5 0143000

SOLENOID VALVE

3/4"

PROBE P/N

0084300

LOW LEVEL

PROBE P/N

0084500

VACUUM BREAKER P/N 0184301

1

NUT, 6/32 S/S

2

WASHER

3

RUBBER

4

PORCELAIN,

5

OUTER INSERT,

6

SILASTIC

1

PROBE BOOT

2

NUTS

3

LOCKWASHER

4

PROBE TANK

5

COUPLING

ITEM
1

2
3
4

P/N

0184700
0184700
0184700

DESCRIPTION
BONNET

DISK
GASKET

POPPET
BODY

44

2

0185000 VALVE FOR HEALTH

4
6

0055500 FLOW CONTROL, 3/4"

REMOVABLE FILTER

PIPE UNION

CUTAWAY VIEW OF WASH SUMP

ITEM P/N DESCRIPTION

1 DRAIN FITTING
2 0054000 DRAIN "O" RING
3 0152000 OVERFLOW STRAINER
4 0058000 WASH TANK HEATER ELEMENT
5 0151000 INSIDE PUMP STRAINER
6 WASH TANK THERMOSTAT SHEATH
7 SUMP WALL

ITEM P/N DESCRIPTION

1

2 0054000 DRAIN "O" RING
3 0151000 INSIDE PUMP STRAINER
4 0152000 LARGE OVERFLOW STRAINER

DRAIN FITTING WELDED
TO WASH SUMP BOTTOM

45

BOOSTER TANK

ITEM P/N DESCRIPTION

1 0006801 BOOSTER TANK (B MODEL)
2
3
4 0058602 HEATER BUS BARS (1 PHASE CONNECTION)
5 0058600 HEATER ELEMENTS (2 EACH)
6 0058601 HEATER GASKETS (2 EACH)

EXTERNAL VACUUM BREAKER FITTING
THERMOSTAT PROBE, FITTING LOCATED ON SIDE

WITH ELEMENTS (1
PHASE HOOKUP)

ITEM P/N DESCRIPTION

1
2

3
4 0058600 BOOSTER HEATER ELEMENTS
5 0058603 HEATER ELEMENT BUS BARS

THERMOSTAT PROBE FITTING
THERMOMETER PROBE FITTING

INCOMING WATER FITTING

(3 PHASE CONNECTION)

46

ITEM P/N DESCRIPTION

0058000

WASH TANK

1 0058600 BOOSTER TANK

HEATER ELEMENT

2 0058601 ELEMENT GASKET

HEATER ELEMENT

47

POWER BOX AND COMPONENTS

ITEM P/N DESCRIPTION

1 GROUNDING LUG
2 0165500 CUSTOMER'S ELECTRIC CONNECTION
3 0123000 HEATER RELAY (3 POLE/3 PHASE)

0124000 (4 POLE/1 PHASE)
4 0121000 RINSE/FILL RELAY
5 0121000 WASH MOTOR RELAY
6 0122000 WASH HATER RELAY
7 0012000 CONTROL CIRCUIT PROTECTION DEVICE
8 0205000 RINSE TANK WATER LEVEL CONTROL

(PRB ONLY)
9 0205000 WASH HEATER WATER LEVEL CONTROL

10 0167000 TERMINAL BOARD
11 GROUNDING STUD

48

PARTS LIST FOR MODEL 150 B/PRB

DISHWASHERS

PART NUMBER DESCRIPTION

0006801 Boostertank for machine (stripped) B All 1
0006900 Boostertank for machine (stripped) PRB All 1

0008900 Cantilever Assy Comp (incls pans 0008901, 0008902, 0008700, 0009000, 0009400,
0009600, 0010000,0010300,0010600,0010900,0011200) All 1
89A Cantilever Ann, ONLY 1" dia (use 0008901) All 1
898 Cantilever Handle Grips (use 0008902) All 1
0008700 Cantilever Spring Rods All 1
0008800 Cantilever, removable tabs, w/nuts All 2
90A Cantilever Springs Corner & Straight through (use 0009001) All 2
0009400 Cantilever Eye Bolts All 2
0009600 Cantilever nuts, for eye bolts All 4
0010000 Cantilever sleeve All 2
0010300 Cantilever bolt, for sleeve 1/4" x 1 3/8" All 2
0010600 Cantilever washer flat, for sleeve bolt 1/4" All 4
0010900 Cantilever acorn nut, for sleeve bolt 1/4" All 2
0011200 Cantilever lockwasher, for sleeve bolt 1/4" All 2
0011500 Cantilever coupler door, to cantilever All 2
0012000 Circuit Breaker, 15amp (specify number from Part)
0020400 Control Box Complete wired Upper, B/PRB
0021800 Control Box (stripped) ONLY, Upper
0030600 Control Power Box, Lower, B
0030700 Control Power Box, Lower, PRB
0027400 Control Panel only wired Upper B/PRB All 1
0047000 Door, front, standard model (use0047500) All 1
0047500 Door, front, and sides All 1
0048000 Door, side (use 0047500) Ail 2
0048500 Doorcatch, front All 1
0049000 Door spacer, side All 2
0049500 Doorscrew, for spacer 1/4"x13/8" All 2
0010600 Door washer flat, 1/4",s/s All 2
0010900 Door acorn nut, for spacer 1/4", s/s All 2
0050900 Door knob (front w/screw) All 1
0051800 Door strips or guides All 6
0053100 Door ONLY (false panel for corner model) All 1
0054000 Drain “O” ring
0055500 Flow Control, 115gpm, 3/4"
0056000 Gauge, pressure, 0-60, bottom connection All 1
0058000 Heater element, Immersion, flange type, w/gasket, 220V, 1500W All 1
0058500 Heater gasket, immersion element flange type, above All 1w
586A Heater element, flange type, gasket (use 0058601)
586B Heater bus bars, single phase, set (use 0058602) All 2
586C Heater bus bars, three phase, set (use 0058603) All 2
0058600 Heater element Immersion, flange type, 208/230V, 6700W All 2
835A Light indicator Amber (use 0083501) All 2
835G Light indicator Green (use 0083507)
835R Light indicator Red (use 0083518)
0084300 Probe; small Lundy
0084500 Probe; large Warrick Hi-Level All 1R
0084700 Probe; cover rubber (for 845) All 1R

SERIAL

NUMBERS

150

1
1
1
1
1

1
1

2

1
1

2W

54

PARTS LIST FOR MODEL 150 B/PRB

DISHWASHERS

PART NUMBER DESCRIPTION SERIAL NUMBERS 150
0085000 Pump assy comp w/motor, 1/2 HP, 3450 RPM, Rinse (PRB Only)
0086000 Pump, motor 115/230 V 1/2 HP, 3450 RPM, JET, Rinse (PRB Only) All 1R
0087509 Pump seal (for pump parts 850-863-920-925) All 1R
0088000 Pump mounting plate (for Dump parts 850-863)
0089000 Pump ceramic face w/retainer cup (for pump parts 850-863-920-925) All 1R
0089500 Pump impeller 2 3/4" dia 7/16" tap (for pump 850-863)
0090000 Pump gasket (for pump parts 850-863) (mounting) All 1R
0090500 Pump bolts (for pump parts 850-863) All 1R
0091000 Pump lockwashers (for pump Parts 850-863-920-925) All 4x
0091500 Pump nuts (for pump parts 863-862-920-925) All 4X
0102000 PUMP ASSEMBLY, COMPLETE, JET 1 HP 1725 RPM All 1w
0102700 Pump motor, JET, 100/208V-230V, 1 HP 1725 RPM All 1w
0104500 Pump mounting plate (for part 1020) All 1W
0105000 Pump seal and ceramic (for part 1020) All 1w
0105500 Pump impeller (for part 1020) All 1W
0106000 Pump gasket, square (for part 1020) (mounting) All 1w
0106500 Pump, Woodruff Key (for part 1020) All 1w
0107000 Pump bolt Impeller, s/s5/16"-18x 1" (for part 1020) All 1W
0107500 Pump washer Impeller (for part 1020) All 1w
0108000 Pump snap ring (for part 1020) All 1w
? Pump bolts, 3/18-16x 11/4" Cap HH (for part 1020) All 4W
? Pump lockwashers (for part 1020) All 8W
0117500 Rack, SQUARE, 19 3/4" x 19 3/4" (cup, bowl & glass) molded
0117800 Rack, SQUARE, 19 3/4" x 193/4" (dish) molded
0121000 Relay, 220V, 2-pole, HW (used on rinse & wash circuit)
0122000 Relay 220V, 2-pole wash heater
0123000 Relay, 220V, 3-pole, HW (used on heat circuit, three phase) All 1
0123300 Relay, Timer holding (SPOT)220V
0124000 Relay, 220V, 4-pole, HW (used on heat circuit, single phase) All 1
0127000 Rinse Head, End plug(nylon) All 4
0132500 Rinse head hex bushing, s/s All 2
0133000 Rinse head nylatron washer All 2
0133500 Rinse head snap rings, s/s All 2
0134000 Brush, tube cleaning, large All 1
0136000 Rinse head upper & lower interchange All 2
0136500 Rinse head feed pipe Upper All 1
0137000 Rinse head feed pipe Lower All 1
0143000 Solenoid valve, 3/4", 220V,JE All 1
0143100 Solenoid valve, 3/4", 220V, JE, GP (use 0143000)
0144000 Solenoid valve coil, 220V, JE (for 1/2" & 3/4")
0145500 Solenoid valve diaphragm cartridge, and '0' ring, 3/4", JE All 1
0145600 Solenoid valve diaphragm cartridge, 3/4" JE, GP
0148000 Solenoid valve '0' ring, 3/4", JE All 1
0148500 Solenoid valve, plunger assembly, for 1/2" and 3/4", JE
0148600 Solenoid valve plunger assembly, 1/2" & 3/4", JE, GP
0150000 Solenoid valve strainer screen, 3/4" JE Ail 1
? Solenoid valve gasket, 3/4" JE, GP
? Strainer, small pump intake All 1
0152000 Strainer, large overflow All 1

1R

1R

1R

1
1
1

1

1
1

1

1
1

1

0153700 Strainer, -‘Y', 3/4" All 1
0155600 Switch, manual wash/rinse-fill, rocker type
0158900 Switch, automatic, start, manual mode, rocker type

55

1
1

PARTS LIST FOR MODEL 150

B/PRB DISHWASHERS

PART NUMBER DESCRIPTION SERIAL NUMBERS 150

0162000 Switch, power, on/off, rocker type
0165500 Terminal Board, 3-pole, complete All 1
0167000 Terminal Board, 9-pole, complete slip terminal
0169200 Thermometer, wash or rinse, 6 ft cap All 2
1700R Thermostat, rinse, 180-195° (use 0170018) All 1
1700W Thermostat, wash, 150-160" (use 0170023)
0173900 Timer, 220V, 60sec, 4cam
1739A Timer motor, 220V (use0173901)
0177500 Timer micro switches, plastic module type All 3
0179000 Track, standard, front or back (use 0180000) All 1
0180000 Track comer model convertible All 1
0184300 Vacuum breaker, 3/4" Sloan (use 0184301)
0184700 Vacuum Breaker Kit (float & seal) 3/4" Sloan
0185000 Valve, 1/4" (for Health Inspector's gauge) All 1
0186500 Wash head cap w/race
0187000 Wash head cap set screw
0187500 Wash head center shaft
0188500 Wash head holding bolt
0044700 Wash head nut for holding bolt (nylon insert)
0193500 Wash head fixed race
0194004 Wash head bearings, 1/4",s/s All 114
0194500 Wash head spray tube ONLY, long length All
0200000 WASH HEAD ASSY, UPPER & LOWER INTERCHANGE All 2
0200500 Wash head small manifold w/tubes All 2
0201000 Wash head, large manifold w/tubes All 2
0205000 Water level control, Curtis, 220V
0205500 Water level control, relay ONLY, Curtis
0206000 Water level control, printed board ONLY, Curtis

1

1

1
1
1

1
1

1
2
2
2
2
2

1
1
1

0009459 Rack support rod (vee shape) rod only
0180001 Rack support rod assembly
0008201 Cantilever arm support bracket
0009100 Cantilever arm yoke assembly
0058200 Heater element flange 208V 1500W
0051900 Door plugs black plastic
0008501 Cantilever arm plugs
0055100 Bottom front panel
0136700 Vertical feed pipe (upper and lower rinse feed pipe)
0163700 Front door switch (some models) 3 term
0163800 Side door switch (some models) 6 term
0048801 Spacer kit door wraparound
0138900 Rinse feed pipe support
0049800 Door wraparound
6047603 Conversion kit straight through to corner

56