Champion UH-150 Service Manual

Technical Manual

Undercounter
Dishwasher

Model
UH-150B

UH-150
UL-150

April, 2003

P.O. Box 4149 Champion Industries, Inc.
Winston-Salem, North Carolina 27115-4149 www.championindustries.com

Manual P/N 0510172 REV. F

Machine Serial No.

Complete the information below so it will be available for quick reference.

Model Number __________________________ Serial Number________________________
Voltage and Phase ______________________________________________________________
Champion Parts Distributor __________________________________ Phone _____________

(if applicable)

_____________________________________________________________________________

Champion Service Agency___________________________________ Phone _____________

_____________________________________________________________________________

Champion Industries Service: 1-800-858-4477 Champion Service Fax: [phone]

NOTE: When calling to order parts, be sure to have the model number, serial number, voltage,
and phase of your machine.

COPYRIGHT © 2003 by Champion Industries

REVISIONS

Revision History

Revision Revised Serial Number Comments

Date Pages Effectivity

08/01/00 All W3245 Issue of manual and service replacement parts.
10/02/00 7 — Added dispenser priming instructions.
11/08/00 39 W3245 Deleted P/N 112204, replaced with P/N 109069.
01/17/01 17 — Changed Front panel P/N to 0308741.
08/21/01 21 — Revised hose clamp and hose part numbers.
02/05/03 39 –– Replaced 108391 with 113622 thermometer.
04/23/03 3,8,14,38,40,42,47 W7604 Inserted Final Rinse Sentry information.
04/23/03 19 –– Revised door hinge assemblies. Changed door catch

assembly from 0710162 to 0710161.

04/23/03 29,31 –– Changed hose P/N 0509214 to P/N 107417

THIS PAGE

INTENTIONALLY

LEFT BLANK

CONTENTS

CONTENTS

Page

INTRODUCTION....................................................................................................................................... 1

WARRANTY.............................................................................................................................................. 2

GENERAL .................................................................................................................................................. 3

INSTALLATION........................................................................................................................................ 5

Unpacking ............................................................................................................................................ 5

Electrical Connections.......................................................................................................................... 5

Plumbing Connections ......................................................................................................................... 6

Detergent.............................................................................................................................................. 6

Rinse-Aid ............................................................................................................................................. 6

Chemical Sanitizer ............................................................................................................................... 6

Completing Installation........................................................................................................................ 7

OPERATION .............................................................................................................................................. 8

Operation Summary ............................................................................................................................. 8

Operation Procedures........................................................................................................................... 8

Extended Wash Cycle .......................................................................................................................... 9

MAINTENANCE........................................................................................................................................ 10

Cleaning Schedule................................................................................................................................ 10

Deliming............................................................................................................................................... 11

Deliming Process.................................................................................................................................. 11

Maintenance Schedule.......................................................................................................................... 12

TROUBLESHOOTING.............................................................................................................................. 13

REPLACEMENT PARTS........................................................................................................................... 15

ELECTRICAL DIAGRAMS ...................................................................................................................... 42

TIMER CHARTS and DIAGRAMS........................................................................................................... 47

LIST OF FIGURES

Figure 1—Track and Panel Assembly......................................................................................................... 16

Figure 2—Door and Switch Assembly........................................................................................................ 18

Figure 3—Tank Heat and Drain.................................................................................................................. 20

Figure 4—Pump Assembly ......................................................................................................................... 22

Figure 5—Wash System Assembly............................................................................................................. 24

Figure 6—Water Inlet Piping...................................................................................................................... 26

Figure 7—Fill System ................................................................................................................................. 28

Figure 8—Booster Assembly...................................................................................................................... 30

CONTENTS

Figure 9—Detergent Pump Assembly....................................................................................................... 32

Figure 10—Sanitizer/Rinse-Aid Pump Assembly....................................................................................... 34

Figure 11—Drain Pump Assembly............................................................................................................. 36

Figure 12—Control Cabinet........................................................................................................................ 38

Figure 13—Electrical Diagram, UH-150B After S/N W7604.................................................................... 42

Figure 14—Electrical Diagram, UH-150B Prior to S/N W7604 ................................................................ 43

Figure 15—Electrical Diagram, UH-150 .................................................................................................... 44

Figure 16—Electrical Diagram, UL-150..................................................................................................... 45

Figure 17—Electrical Diagram, UH-150B (50Hz) ..................................................................................... 46

Figure 18—Timer Chart and Diagram, UH-150B After S/N W7604......................................................... 47

Figure 19—Timer Chart and Diagram, UH-150B, UH-150 Prior to S/N W7604 ...................................... 48

Figure 20—Timer Chart and Diagram, UL-150.......................................................................................... 49

1

INTRODUCTION

INTRODUCTION

Welcome to Champion.
Thank you for choosing Champion and for allowing us to take care of your dishwashing needs.
This manual covers several models. Model numbers are shown on the front cover.
Your machine has been completely assembled, inspected, and thoroughly tested at our factory

to eliminate problems at installation before it was shipped to your installation site. This manual
provides:

•Warranty information

• Installation and operation procedures

• Maintenance instructions

•Troubleshooting guide

•Replacement parts lists.

Complete and return your warranty registration card as soon as possible.
Champion constantly improves its products; therefore, specifications contained in this manual

may have changed.
For your protection, factory authorized parts should always be used.
Replacement parts may be ordered directly from Champion or from your Champion authorized

parts distributor or service agency.When ordering parts, supply the model number, serial number,
voltage and phase of your machine, the part number, part description, and quantity.

2

Champion Industries Inc. (herein referred to as Champion), P.O. Box 4149, Winston-Salem, North Carolina 27115, and
P.O. Box 301, 2674 N. Service road, Jordan Station, Canada, LOR 1S0, warrants machines, and parts, as set out below.

Warranty of Machines: Champion warrants all new machines of its manufacture bearing the name “Champion” and

installed within the United States and Canada to be free from defects in material and workmanship for a
period of one (1) year after the date of installation or fifteen (15) months after the date of shipment by
Champion, whichever occurs first. (See below for special provisions relating to glasswashers.) The warranty
registration card must be returned to Champion within ten (10) days after installation. If warranty card is not
returned to Champion within such period, the warranty will expire after one year from the date of shipment.

Champion will not assume any responsibility for extra costs for installation in any area where there are
jurisdictional problems with local trades or unions.

If a defect in workmanship or material is found to exist within the warranty period, Champion, at its election,
will either repair or replace the defective machine or accept return of the machine for full credit; provided,
however, as to glasswashers, Champion’s obligation with respect to labor associated with any repairs shall
end (a) 120 days after shipment, or (b) 90 days after installation, whichever occurs first. In the event that
Champion elects to repair, the labor and work to be performed in connection with the warranty shall be done
during regular working hours by a Champion authorized service technician. Defective parts become the
property of Champion. Use of replacement parts not authorized by Champion will relieve Champion of all
further liability in connection with its warranty. In no event will Champion’s warranty obligation exceed
Champion’s charge for the machine. The following are not covered by Champion’s warranty:

a. Lighting of gas pilots or burners.
b. Cleaning of gas lines.
c. Replacement of fuses or resetting of overload breakers.
d. Adjustment of thermostats.
e. Adjustment of clutches.
f. Opening or closing of utility supply valves or switching of electrical supply current.
g. Cleaning of valves, strainers, screens, nozzles, or spray pipes.
h. Performance of regular maintenance and cleaning as outlined in operator’s guide.
i. Damages resulting from water conditions, accidents, alterations, improper use, abuse, tampering, improper

installation, or failure to follow maintenance and operation procedures.
j. Wear on Pulper cutter blocks, pulse vanes, and auger brush.
Examples of the defects not covered by warranty include, but are not limited to: (1) Damage to the exterior or

interior finish as a result of the above, (2) Use with utility service other than that designated on the rating
plate, (3) Improper connection to utility service, (4) Inadequate or excessive water pressure, (5) Corrosion
from chemicals dispensed in excess of recommended concentrations, (6) Failure of electrical components due
to connection of chemical dispensing equipment installed by others, (7) Leaks or damage resulting from such
leaks caused by the installer, including those at machine table connections or by connection of chemical
dispensing equipment installed by others, (8) Failure to comply with local building codes, (9) Damage caused
by labor dispute.

Warranty of Parts: Champion warrants all new machine parts produced or authorized by Champion to be free from

defects in material and workmanship for a period of 90 days from date of invoice. If any defect in material
and workmanship is found to exist within the warranty period Champion will replace the defective part
without charge.

DISCLAIMER OF WARRANTIES AND LIMITATIONS OF LIABILITY.

CHAMPION’S WARRANTY IS
ONLY TO THE EXTENT REFLECTED ABOVE. CHAMPION MAKES NO OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED, TO ANY WARRANTY OF MERCHANTABILITY, OR
FITNESS OF PURPOSE. CHAMPION SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES. THE REMEDIES SET OUT ABOVE ARE THE EXCLUSIVE REMEDIES FOR ANY DEFECTS
FOUND TO EXIST IN CHAMPIOPN DISHWASHING MACINES AND CHAMPION PARTS, AND ALL
OTHER REMEDIES ARE EXCLUDED, INCLUDING ANY LIABILITY FOR INCIDENTALS OR
CONSEQUENTIAL DAMAGES.

Champion does not authorize any other person, including persons who deal in Champion dishwashing machines to
change this warranty or create any other obligation in connection with Champion Dishwashing Machines.

WARRANTY

LIMITED WARRANTY

3

GENERAL

GENERAL

This manual covers the Champion undercounter dishwashing machine. This machine is fully
automatic and is equipped with a 1/2 H.P. pump motor. All models are available for mounting
directly to the floor or on optional stands (see accessories listed on page 4).

Standard equipment includes:

-Automatic tank fill -Upper and lower wash/rinse arms

-Common utility connections -Two dish racks (peg and flat)

-120 Volt control circuit -Exclusive vent design for

-Convenient, easy to use controls venting of condensation

-Door latch activated start switch -Stainless steel heavy-gauge construction,

-Detergent pump (UH-150, UH-150B) including base

-Detergent, rinse-aid & sanitizer pumps (UL-150) -Final rinse sentry (UH-150, UH-150B)

This series of dishwashers is available in the following models:

Model Numbers

UH-150B, UH-150, UL-150

• The UH-150B model is a high temperature (180°F/82°C rinse) sanitizing model with
booster.

• The UH-150 model is a high temperature (180°F/82°C rinse) sanitizing model without
booster.

• The UL-150 model is a low temperature (140°F/60°C rinse) sanitizing model for use with
sodium hypochlorite solution (chlorine bleach) as a sanitizing agent. The rinse aid pump is
standard.

Options

• Kit 504 - Top and side panels (P/N 0708756)

• Kit 505 - Top panel only (P/N 0708744)

• Kit 506 - Left side panel only (P/N 0708745)

• Kit 507 - Right side panel only (P/N 0708746)

• Kit 508 - Rinse aid pump kit (P/N 0708754)

• Kit 510 - Extended reach pumped drain kit (UH-150B, UH-150, UL-150) (P/N 0708766)

• Kit 511 - 70°F/39°C temperature rise booster (for 110°F/49°C supply water).

4

GENERAL

Accessories

• 17RS - 17" rack stand (raises working height and adds rack storage)

• 17T - 17" cabinet (raises working height and adds storage)

• CST - Combination sink/table (scraping and sorting station)

• 0501653 - Dish Rack (Peg Rack)

•0501654 - Silverware Rack (Flat Bottom Rack)

• 0710364 - 5" Base/Stand

Electrical Power Requirements

Booster Rated Minimum Supply Maximum Overcurrent
Model Voltage Rise Amps Ckt. Ampacity Protective Device
UL-150 115/60/1 N/A 13 15 15

UH-150 115/60/1 N/A 13 15 15
UH-150B 208/60/1 40 36 50 50
UH-150B 240/60/1 40 40 50 50
UH-150B 208/60/1 70 48 60 60
UH-150B 240/60/1 70 55 70 70

NOTE:

208-240V/60Hz/1PH electrical supply service must be a 3-wire plus ground for connection
as shown for model UH-150B.

— 3-Wire Plus Ground Diagram

115V

208-240V 115V

L1 L2 N

G

00023

5

INSTALLATION

INSTALLATION

Unpacking

WARNING:

Care should be taken when lifting the machine to prevent damage.

1. Immediately after unpacking your machine, inspect for any shipping damage. If damage is
found, save the packing material and contact the carrier immediately.

2. Remove the dishwasher from the skid. Adjust the feet if required, then move the machine to
its permanent location.

3. Level the machine (if required) by placing a level on the top of the machine and adjusting
the feet. Level the machine front-to-back and side-to-side.

CAUTION:

After locating your machine, it must meet local health codes. An example may be to seal
your machine to the floor using a good grade of silicone sealant.

Electrical Connections

WARNING:

Electrical and grounding connections must comply with the National Electrical Code and/or
Local Electrical Codes.

WARNING:

When working on the dishwasher, disconnect the electric service and tag it to indicate work
is being done on that circuit.

1. The electrician should compare the electrical specifications on the machine electrical
junction box (located behind the front panel) to the electrical power supply before
connecting the machine to the incoming service at a fused disconnect switch.

NOTE:

The 208-240V/60Hz/1PH electrical supply service for model UH-150B must be a
3-wire plus ground service.

2. On the 208V-240V models, a knock-out is provided at the rear of the junction box (located
behind the front panel) for electrical service connections. A fused disconnect switch or
circuit breaker (supplied by user) is required to protect each power supply circuit.

3. On 115V models, your machine is already equipped with a 4-foot power cord and plug
suitable for 115V-15A service.

!!!

!

INSTALLATION

6

Plumbing Connections

CAUTION:

Plumbing connections must comply with local sanitary and plumbing codes.

Water Connections

1. Connect the hot water supply (140°F/ 60°C Min) to the 1/2" I.D. fill hose. The fill solenoid
valve is equipped with a flow control that will accept water pressures from 172 kPa/25 psi to
665 kPa/95 psi.

2. Install a manual shut-off valve in the water supply line to accommodate servicing the
machine. The shut-off valve should be the same size or larger than the supply line.

3. The fill solenoid valve is equipped with a built-in strainer to protect from particles in the
water supply.

Drain Connections

1. All Models are supplied with a
flexible 5/8" I.D. drain hose, which
must be connected to a 1-1/2" drain
using a wye (Y) fitting.

Chemical Dispensing Pumps

1. Use a qualified detergent/chemical supplier for your detergent, rinse aid, and chemical
sanitizer needs.

2. The cycle timer located in the main control cabinet is equipped with adjustable cams for the
chemical dispensing pump(s). The cams control the length of time that the pumps operate.
A qualified person may adjust the cam settings if necessary. Refer to the timer chart
diagram(s) at the end of the manual for timer cam locations and factory time settings.

Detergents

1. Your machine is supplied with a detergent dispensing pump that is internally wired and
ready for use. Using a liquid detergent, insert the labeled Detergent pickup tube into the
detergent container. The pickup tube has a strainer on the end to prevent crystallized
chemical from clogging the supply lines.

Rinse Aid

1. An optional rinse aid pump may be supplied for UH-150B and UH-150 models. Using a
liquid rinse aid, insert the labeled Rinse Aid pickup tube into the rinse aid container.

Sanitizer

1. Model UL-150 is supplied with an internally wired chemical sanitizer dispensing pump.
Using a sodium hypochlorite solution, insert the labeled Chemical Sanitizer pickup tube into
the chemical sanitizer container.

2. Contact your chemical supplier for adjustment of the chemical sanitizer.

!

Floor

Max. Drain

Height

3 ft.

[915mm]

1-5/8"

[42mm]

1-1/2"

"Y"

Fitting

Do not connect
to drain at 90°.
Use "Y" fitting.

INSTALLATION

7

Priming Chemical Dispensing Pumps

1. Insert pick-up tubes in their respective chemical containers. Each pick-up tube is labeled to
identify the proper container.

NOTE:

Make sure booster has been primed on Model UH-150B before priming chemical
pumps.

2. For all models, push the DET/RINSE to prime the detergent and rinse-aid. Hold the switch,
and observe fill chute on interior right side of machine until chemical enters the wash
chamber.

3. For model UL-150 only, hold the SANITIZER switch in the up position to prime the
sanitizer. Observe fill chute on interior right side of machine until you see chemical enter the
wash tank.

Completing Installation

1. Remove any foreign material from inside the machine.

2. Center the scrap screen over the sump opening.

3. Prime the booster using the following procedure (if applicable).

CAUTION:

To prime the booster, the following procedure must be followed AFTER the electrical
and plumbing connections have been made.

a. Close the front door.
b. Remove the front panel.
c. Locate the Installation and Service toggle switch on the extreme left side of

the control box.

d. Press the toggle switch down to the Booster Fill position and hold it

approximately 1 minute (or until water can be heard entering the machine).
e. Release the toggle switch to stop the water flow.
f. You have completed the booster priming process.

NOTE:

Push the Installation and Service toggle switch to the UP position.

Electrical power is now supplied to the machine.

WARNING:

Failure to prime the booster may cause damage to the booster elements and other
electrical components and will void the warranty.

4. After plumbing and electrical connections are completed, check the machine for water leaks

by depressing the ON/FILL switch on the front panel, then close and latch the door. This
allows the tank to fill and to complete the rinse cycle. Check for leaks.

5. Open the door and check the water level. The water level should barely cover the scrap
screen.

6. Depress the OFF/DRAIN switch and close and latch the door to drain the tank. This allows
the machine to complete the 100-second wash and drain cycle. Check the drain plumbing
for leaks.

7. Replace the front panel. Installation is now complete.

!!!

8

OPERATION

OPERATION

Operation Summary

The following is a summary of your Undercounter Dishwashing Machine operating cycle:

1. The cycle begins when you depress the front edge of the door latch toward the door.

2. The green cycle lamp lights and the pump starts.

3. The pump runs during the wash cycle for approximately 80 seconds. The wash cycle
duration is extended if booster is not up to temperature.

4. The pump stops, and the drain is opened.

5. After a 2-3 second pause, the pump drain cycle begins and continues for approximately
30 seconds.

6. After a 2-3 second pause, the fill valve opens, and the pump starts for the rinse cycle.

7. Within approximately 25 seconds, the rinse cycle is complete. The pump stops, the green
cycle lamp turns off, and the cycle is complete.

8. Open the door and remove the rack of clean ware. The door must remain open for 5 seconds
to allow the timer to reset before starting another cycle.

Operation Procedures

The operation of your dishwasher will be more efficient when these procedures are followed:

1. Check that the spray arms and scrap screen are in place.

2. Close the door and depress the front edge of the door latch toward the door. Push the
ON/FILL switch to the ON position. The tank will begin filling with water. This procedure
is followed only when the tank is empty.

3. When the tank is full, check the wash tank temperature gauge. Minimum wash temperatures are:

• UH-150B, UH-150 – 150°F/66°C.

• UL-150 – 140°F/60°C.

4. Scrap and preflush all items to be washed, and load the items into the rack. DO NOT
OVERLOAD the rack. Wash only one layer of silverware in a rack.

5. Open the door and insert the rack into the machine.

6. Shut the door, and depress the door latch. This will start the wash cycle. The green cycle
lamp located on the front control panel will light. This lamp will remain on until the entire
wash and rinse cycle is completed.

9

OPERATION

NOTE:

The machine may be stopped at any time by opening the door. When restarted, the cycle
does not start over. It will continue from the point at which it was interrupted.

7. Check the rinse temperature during the final rinse (120 seconds into cycle). The rinse
temperature must be 180°F/82°C minimum for models UH-150B, UH-150, and 140°F/60°C
for model UL-150.

8. The pump will automatically stop and the green cycle light will turn off indicating the cycle
is completed.

9. Open the door and remove the rack.

10. Repeat steps 4-9 for additional cycles. Machine operation is automatic.

11. CLEAN the scrap screen after every meal period. During heavy usage, the scrap screen
should be cleaned more frequently.

CAUTION:

Poor machine performance and/or damage to the machine can occur if the scrap
screen becomes clogged with soil or waste particles.

12. After completing usage for the day, water in the tank should be drained by depressing the
OFF/DRAIN switch and closing and latching the door. This initiates a 100-second wash and
drain cycle that drains the tank.

CAUTION:

DO NOT LEAVE WATER IN THE TANK OVERNIGHT. Water left in the tank
overnight will allow harmful chemicals to deteriorate the tank.

Extended Wash Cycle

On models UH-150B, UH-150, but not on model UL-150, an extended wash cycle is available for
pots, pans and heavily soiled items.

To use the Extended Wash Cycle:

1. Insert the loaded rack into the machine. Close the door and depress the latch. Wait 10
seconds for the detergent to be dispensed automatically.

2. Flip the Extended Wash/Delime Switch to the UP position. The green cycle light will go
out, indicating that the machine is in a continuous wash mode.

3. When your desired wash time has passed, flip the Extended Wash/Delime Switch to the
DOWN position. The green cycle light will come on, indicating a return to the normal wash
mode. The machine will now complete the remaining portion of the automatic cycle.

!

!

10

MAINTENANCE

MAINTENANCE

The efficiency and life of your machine is increased by regularly scheduled preventive
maintenance. A well maintained machine gives better results and service. An investment of a few
minutes of daily maintenance will be worthwhile.

The best maintenance you can provide is to keep your machine clean. Components that are not
regularly cleaned and flushed will clog and become inoperative.

Intervals shown in the following schedules represent an average length of time between necessary
maintenance. Maintenance intervals should be shortened whenever your machine is faced with
abnormal working conditions, hard water, or multiple shift operations.

Cleaning Schedule

• Daily – Every 8 Hours

1. Depress the OFF/DRAIN switch to OFF and close and latch the door to drain the tank.

2. Open the door and remove both the upper and lower spray arms by unscrewing the
knurled fastener holding each spray arm.

3. Remove the scrap screen carefully to keep soil or waste particles from falling into the
sump.

4. Clean inside the tank with clean water. Backflush the scrap screen until it is clean. Do
not strike the screen against solid objects.

5. Clean the wash arms to remove any debris from spray openings. Do not strike the spray
arms against solid objects.

6. Reinstall the scrap screen and spray arms.

7. Leave the door open overnight to allow drying.

8. Report any unusual conditions to your supervisor.

• Meal Periods

1. Clean the scrap screen after every meal period and more frequently during heavy usage.
Do not allow the scrap screen to become clogged with soil or waste particles.

11

MAINTENANCE

Deliming

Your dishwasher should be delimed regularly as required. This will depend on the mineral content
of your water.

Inspect your machine interior for lime deposits. If deliming is required, a deliming agent should
be used for best results.

If you have the chemical sanitizing model (UL-150), carefully follow the following procedure
before deliming:

DANGER:

Deliming solution or other acids must not come in contact with household bleach (sodium
hypochlorite) or any chemicals containing chlorine, iodine, bromine, or fluorine. Mixing
will cause hazardous gases to form. Skin contact with deliming solutions can cause severe
irritation and possible chemical burns. Consult your chemical supplier for specific safety
precautions.

1. Remove the sanitizer tube from the container. Place the tube into a container of hot water.

2. Depress and hold the SANITIZER prime switch (located on the front panel) until clear

water enters the tank through the fill air gap.

3. Close the door and depress the door latch. Complete two operating cycles to purge the

machine of all sanitizer.

Deliming Process

Complete the following procedure to delime your machine:

1. Add the delime chemical to wash the tank (per chemical supplier specifications).

2. Close and latch the door.

3. On models UH-150B and UH-150, depress the EXTENDED WASH/DELIME switch on

the front panel as soon as the cycle starts. On model UTL, proceed to step 5 of this
procedure.

NOTE:

The EXTENDED wash/delime switch will operate only during the wash cycle.
When this switch is in the ON position, the machine stays in the wash cycle until the
switch is OFF. After switching to OFF, the machine will finish the cycle.

4. After 2-1/2 to 3 minutes (or as long as required), turn off the EXTENDED WASH/

DELIME switch. The machine will finish a complete cycle.

5. Complete two cycles with the machine empty to purge the machine of all delime chemicals.

6. Deliming is complete.

!

12

MAINTENANCE

Maintenance Schedule

• As Required

1. Check the temperature gauge reading.

2. Check the chemical supplies and refill as necessary.

• Weekly

1. Inspect all water lines for leaks and tighten them at joints if required.

2. Clean all detergent residue from the exterior of the machine.

3. Check the drain for leaks.

4. Clean accumulated scale from the heating element.

5. Remove and closely inspect each spray arm for blockage.

6. Check for damage to the scrap screen. Ineffective screening can cause wash system

failures.

7. Clean the detergent, sanitizer, and rinse aid supply tubes. Complete the following

procedure:
a. Remove the detergent, sanitizer, and rinse aid pick-up tube(s) from the

container(s). Place the tube(s) into a container of hot water.

b. Depress and hold the DET prime switch (located on the front panel) until clear

water enters the tank through the fill air gap (located on the right side of the
tank).

c. If your machine is equipped with a sanitizer and/or rinse aid pump, follow the

same procedure by pressing the SANITIZER and/or the RINSE AID prime
switch until clear water enters the tank through the fill air gap.

d. When completed, remove the pickup tubes from the hot water and reinsert them

into the correct chemical containers. Repeat the priming procedures to ensure
that chemicals have filled the tubes for the next operating period.

e. Run a complete cycle to flush chemicals from the tank.

13

TROUBLESHOOTING

TROUBLESHOOTING

Before determining any specific cause of a breakdown or abnormal operation of your dishwasher,
check that:

1. Turn all switches ON, except for the extended wash switch.

2. Wash arms are clean.

3. Scrap screen is properly positioned and clean.

4. Thermostat(s) are at their correct setting.

5. Sanitizer, detergent, and rinse additive dispensers are adequately filled.

6. All plumbing valves are open.
If a problem still exists, use the following table for troubleshooting.

CONDITION CAUSE SOLUTION

Machine will not start Door not closed and latched ................ Make sure door is fully latched

Main switch off, or unit unplugged .... Check disconnect or plug into outlet

Make sure the extended wash switch is in

the OFF position.

Low or no water Main water supply is turned off ......... Turn on house water supply

Chemical not feeding No chemical in container..................... Replace or fill container

Feed tubes to/from chemical............... Clear obstruction and flush

pump clogged with hot water

Screen on feed tube clogged................ Clean and replace

Tubing kinked or split......................... Straighten or replace tubing

Water temperature Incoming water temperature................ Raise temperature to

is low when in use at machine too low 140°F/60°C for all machines

Hi limit tripped Reset hi limit

Insufficient pumped spray Clogged spray arm .............................. Clean

pressure Scrap screen full.................................. Must be kept clean and in place

Low final rinse temperature Low incoming water............................ Check the booster - be sure the

temperature thermostat is set to maintain 180°F/66°C

temperature (UL-150 is 140°F/60°C)

(Check all valves to be

sure they are clean and operating)

Hi limit tripped Reset hi limit

Poor washing results Water level low in wash tank .............. Check fill valve and water pressure

should be at or 1/2" (13mm)
above screen

Detergent dispenser not....................... Contact service agent

operating properly

Insufficient detergents......................... Check and fill

Contact detergent supplier

Detergent setting too low ................... Contact detergent supplier

Wash water temperature too low......... See above booster temperatures

Wash arm clogged .............................. Clean wash arm

Improperly scraped dishes................... Check scraping procedures

Ware being improperly........................ Use proper racks - do not overload

placed in rack racks

Improperly cleaned ............................. Unclog wash arms to maintain

equipment proper pressure and flow conditions

Electric element has ............................ Clean and delime

soil/lime buildup

14

TROUBLESHOOTING

TROUBLESHOOTING (con’t)

CONDITION CAUSE SOLUTION

No water in wash well Opening door prior.............................. Close door. Wait for green cycle light

to cycle completion to go out before opening door.

No water in wash tank Door not latched.................................. Latch door.

after activating the Wait for wash tank to fill.
ON/FILL switch

Cycle time increases Incoming water.................................... Raise temperature to 60°C/140°F

with each cycle temperature is too low for all machines.

15

REPLACEMENT PARTS

REPLACEMENT

PARTS

16

REPLACEMENT PARTS

14

14

14

13

12

00001

11

8

7

6

5

9

4

3

2

1

10

Figure 1 — Track and Panel Assembly

17

REPLACEMENT PARTS

TRACK/PANEL ASSEMBLY

Fig. 1 Part Description Qty
Item No. No.

1 0508751 Screw, 10-32 x 1-1/2" Lg. Truss Head....................................... 2

2 0308741 Front Panel (UH-150B, UH-150, UL-150)................................ 1

3 0308741 Front Panel (UL-150)................................................................. 1

4—No Longer Available

5 0501413 Screw, 10-32 x 3/8" Lg. Round Head......................................... 2

6 0501415 Screw, 10-32 x 5/8" Lg. Round Head......................................... 4

7 0308632 Track, RH................................................................................... 1

8 0308631 Track, LH ................................................................................... 1

9 0708647 Cover, Vent................................................................................. 2

10 0308736 Panel, LH Side (UL-150, UH-150B, UH-150) .......................... 1

11 0308734 Panel, Rear (UL-150, UH-150B, UH-150) ................................ 1

12 0308737 Panel, RH Side (UL-150, UH-150B, UH-150).......................... 1

13 0308735 Panel, Top (UL-150, UH-150B, UH-150).................................. 1

14 100007 Screw, 10-32 x 3/8" Lg. Truss Head (UL-150).......................... 10

18

REPLACEMENT PARTS

1

2

3

5

6

7

8

9

10

17

16

16

11

15

13

14

14

18

11

12

1

4

1

00020(UH)

Figure 2 — Door & Switch Assembly

19

REPLACEMENT PARTS

DOOR & SWITCH ASSEMBLY

Fig. 2 Part Description Qty
Item No. No.

1 100007 Screw, 10-32 x 3/8" Truss Head................................................. 6

2 0710167 Door Latch Assy......................................................................... 1

3 0510165 Plunger, c/w Magnet................................................................... 1

4 0710161 Assembly, Door Catch (Includes item 3) ................................... 1

5 0508545 Gasket, Steam............................................................................. 2

6 104883 Screw, Round Head (6-32 x 3/8")............................................... 2

7 0709431 Plate, Door Switch...................................................................... 1

8 111090 Switch, Door Magnetic Reed ..................................................... 1

9 0508544 Gasket, Upper Door.................................................................... 1

10 0508543 Gasket, Side Door....................................................................... 2

11 112779 Screw 1/4-20 x 1 3/4" FL Socket Head...................................... 4

12 0310183 Washer, Hinge (2 per side) ........................................................ 4

13 0710098 RH Hinge Assy........................................................................... 1

13 0710097 RH Hinge Assy........................................................................... 1

14 106026 Washer........................................................................................ 4

15 112543 Shock, Door................................................................................ 2

16 106551 Pin, Cotter................................................................................... 4

17 0501539 Nut, Plain 1/4-20 ........................................................................ 2

18 0710158 Door............................................................................................ 1

- 0508555 Wiring, Harness, Door Switch.................................................... 1

20

REPLACEMENT PARTS

THERMOSTAT
(CALLED OUT IN
CONTROL BOX)

THERMOMETER
(CALLED OUT IN
CONTROL BOX)

TO PUMP

DRAIN

16

13

20

19

9

8

19

7

6

5

10

11

21

TO DRAIN

14

14

19

16

17

18

4

TO RINSE

3

1

00004

2

12

11

15

3

Figure 3 — Tank Heat and Drain

21

REPLACEMENT PARTS

TANK HEAT/DRAIN ASSEMBLY

Fig. 3 Part Description Qty
Item No. No.

1 0508628 Scrap Screen............................................................................... 1

2 0508536 Heater Element 220V-60Hz-1PH (UH-150B, UL-150)............. 1

3 0508537 Heater Element 110V-60Hz-1PH (UH-150, UL-150)................ 1

4 0508578 Adapter, Pump Tube................................................................... 1

5 0501539 Nut, Plain 1/4-20........................................................................ 2

6 0501501 Washer, Lock, 1/4" Split............................................................. 2

7 0308611 Support, Drain Valve.................................................................. 1

8 0306618 Valve, Drain................................................................................ 1

9 0501418 Screw, 1/4-20 x 1/2" Lg. Round Head ....................................... 2

10 0508873 Adapter, Thermostat................................................................... 1

11 0501836 O-Ring, Thermostat.................................................................... 2

12 0508872 Adapter, Thermometer ............................................................... 1

13 108954 Nut, Grip 6-32 w/Nylon Insert................................................... 2

14 110562 Thermostat, High-Limit ............................................................. 1

15 201029 Locknut, 1/2 NPT Nickel-Plated................................................ 2

16 0308655 Tube, Pump Outlet ..................................................................... 1

17 0508579 Nut, Jam 1"-8 ............................................................................. 1

18 104414 O-Ring........................................................................................ 1

19 0510082 Clamp, Hose............................................................................... 2

20 0507265 Hose, 5/8"ID x 7/8"OD PVC Braided........................................ A/R

21 0509302 Hose, 5/8"ID x 1"OD PVC Braided........................................... 6 Ft.

22

REPLACEMENT PARTS

TANK
BOTTOM

12

14

13

11

10

9

8

7

6

5

4

2

3

1

00005

Figure 4 — Pump Assembly

23

REPLACEMENT PARTS

PUMP ASSEMBLY

Fig. 4 Part Description Qty
Item No. No.

1 0508542 Spindle, Lower Wash Arm......................................................... 1

2 0501431 Screw, 8-32 x 1-1/8" Round Head.............................................. 4

3 0501425 Screw, 8-32 x 5/8" Round Head................................................. 4

4 0508793 Housing, Diffuser....................................................................... 1

5 0502741 Diffuser....................................................................................... 1

6 0502704 Impeller...................................................................................... 1

7 0502746 Adapter Plate, Suction................................................................ 1

8 0502745 Plate, Drain lnlet......................................................................... 1

9 0502703 O-ring......................................................................................... 1

10 0502744 Propeller/Rotating Seal Assembly............................................. 1

11 0502743 Mounting Plate/Seal Assembly (Includes Item 10).................... 1

12 0501881 Gasket, Pump ............................................................................. 1

13 0508665 Screw, 10-32 x 5/8" Hex Washer Head ...................................... 8

14 0508570 Washer, Sealing Teflon............................................................... 8

- 0710071 Pump/Motor Assembly (lncludes items 1-11)*......................... 1

- 107966 Nut, Grip 10-32, SST (Not Shown) (For mounting Item 1)....... 1

* Motor not available as a separate repair part

FROM
PUMP

TANK BOTTOM

PUMP

2

14

TOP OF

HOOD

13

12

11

10

9

10

8

7

6

5

4

3

2

1

00006

24

REPLACEMENT PARTS

Figure 5 — Wash System Assembly

25

REPLACEMENT PARTS

WASH SYSTEM ASSEMBLY

Fig. 5 Part Description Qty
Item No. No.

1 0508549 Hose, Upper Wash...................................................................... 1

2 0502563 Clamp, Hose 1"........................................................................... 2

3 0708650 Spindle, Upper Wash Arm.......................................................... 1

4 0503588 O-ring, 1-1/8" x 1-3/8"............................................................... 1

5 0501412 Screw, 10-32 x 3/8" Lg. Truss Head........................................... 3

6 0508541 Bushing, Upper Wash Arm......................................................... 1

7 0705047 Wash Arm, Upper....................................................................... 1

8 0505042 Pivot, Upper Wash Arm.............................................................. 1

9 0308783 Retainer, Upper Pivot S/A .......................................................... 1

10 0501563 Screw, #8 x 3/8" (Sheet Metal) Truss Head................................ 4

11 0308158 Nut Clip, Spray Arm................................................................... 1

12 0501684 Nut, Spray Arm Lock................................................................. 1

13 0705049 Wash Arm, Lower....................................................................... 1

14 0508540 Bushing, Lower Wash Arm ........................................................ 1

- 0708874 Lower Wash Arm Assembly (includes items 10-14)

26

REPLACEMENT PARTS

1

2

3

4

5

6

7

8

9

10

11

12

13

16

15

16

7

2

WATER
CONNECTION

WATER
CONNECTION

TO BOOSTER

OR FILL

2

00021

Figure 6 — Water Inlet Piping

27

REPLACEMENT PARTS

WATER INLET PIPING ASSEMBLY

Fig. 6 Part Description Qty
Item No. No.

1 0503718 Foot, Adjustable ......................................................................... 4

2 0503679 Clamp, Hose............................................................................... 2

3 0502665 Hose l/2" I.D. Clear-Braided (all except UH-150)..................... A/R

4 0509214 Hose 1/2" I.D. White (UH-150)................................................. A/R

5 0502653 Elbow, 3/8 MPT x 1/2" Hose x 90° Brass.................................. 1

6 0504952 Valve, Solenoid 3/8 NPT............................................................ 1

- 0502811 Repair Kit, 3/8" NPT Solenoid Valve ........................................ A/R

- 0505235 Coil, 115V, 3/8" NPT Solenoid Valve ....................................... A/R

- 0504958 Flow Washer, 3/8" NPT Solenoid Valve ................................... A/R

7 0501501 Washer, Lock 1/4" Split.............................................................. 4

8 0501419 Bolt, 1/4-20 x 1/2" Lg. Hex Head .............................................. 2

9 0300203 Clamp, Valve Support ................................................................ 1

10 0300065 Support, Fill Valve...................................................................... 1

11 0501424 Bolt, 1/4-20 x 3/8" Lg. Hex Head .............................................. 2

12 0503713 Elbow, Street 3/8 MPT x 1/2 FPT Brass

(UH-150B, UH-150, UL-150).................................................... 1

13 0502618 Coupler, 3/8 MPT x 1/2" Hose barb........................................... 1

14 0503679 Clamp, Hose (all except UH-150B, UH-150, UL-150) ............. 1

15 0509526 Hose, Coupled 7 ft. (all except UH-150B, UH-150, UL-150)... 1

16 0505320 Washer, Hose (all except UH-150B, UH-150, UL-150)............ 1

28

REPLACEMENT PARTS

4

3

7

6

4

5

2

3

4

3

2

4

1

8

Beginning with S/N 5733 & Above

F

r

o

m

D

e

t

e

r

g

e

n

t

P

u

m

p

(

S

e

e

C

o

r

r

e

s

p

o

n

d

i

n

g

P

u

m

p

F

o

r

H

o

s

e

)

F

r

o

m

S

a

n

i

t

i

z

e

r

R

i

n

s

e

-

a

i

d

P

u

m

p

s

R

H

S

i

d

e

o

f

T

a

n

k

F

r

o

m

T

o

p

o

f

B

o

o

s

t

e

r

o

r

F

r

o

m

F

i

l

l

V

a

l

v

e

00018

Figure 7 — Fill SystemFigure 7 — Fill System

29

REPLACEMENT PARTS

FILL SYSTEM

All Models

Fig. 7 Part Description Qty
Item No. No.

1 0502665 Hose, 1/2" I.D. Clear Braided (UL-150).................................... A/R

2 0501518 Tie Wrap, Hose........................................................................... 2

3 106090 Bracket, Tie Wrap ...................................................................... 2

4 107966 Nut, Grip, 10-32 w/Nylon Insert................................................ 8

5 0509048 Gasket, Inlet Chute..................................................................... 1

6 0508867 Inlet Chute.................................................................................. 1

7 0501519 Tie Wrap, Chemical Hose.......................................................... 3

8 107417 Hose, Fill 1/2" I.D. (White) (UH-150B, UH-150)..................... 3 ft.

30

REPLACEMENT PARTS

5

6

8

9

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

THERMOSTAT

(CALLED OUT

IN CONTROL BOX)

TO FILL SYSTEM

FROM FILL VALVE

18

23

3

4

7

6

15

10

1

4

3

1

2

00017

Figure 8 — Booster Assembly

31

REPLACEMENT PARTS

BOOSTER ASSEMBLY

(Model UH-150B Only)

Fig. 8 Part Description Qty
Item No. No.

1 0503679 Clamp, Hose............................................................................... 2

2 107417 Hose, 1/2" I.D. (42") .................................................................. 3 ft.

3 0502653 Elbow, 3/8 MPT x 1/2" Hose x 90° Brass.................................. 2

4 0508840 Bushing, Reducing 3/4 NPT x 3/8 NPT Brass........................... 2

5 0501419 Bolt, 1/4-20 x 1/2" Lg. Hex Head .............................................. 2

6 0501501 Washer, Lock 1/4" Split.............................................................. 5

7 108954 Nut, Grip 6-32 w/Nylon lnsert ................................................... 2

8 110562 Thermostat, High Limit.............................................................. 1

9 0509042 Tank, Booster.............................................................................. 1

10 107417 Hose 1/2" I.D. (28") ................................................................... A/R

11 0508709 Pipe Plug, 1/8 NPT Brass........................................................... 1

12 109985 O-Ring........................................................................................ 1

13 111233 Heater Element, 9KW (70°F Rise) 208/230V-60Hz-1Ph. ......... 1

14 111235 Heater Element, 6KW (40°F Rise) 208/230V-60Hz-lPh. .......... 1

15 100003 Nut, Plain 1/4-20 SST ................................................................ 6

16 107908 Cover, Heater Element ............................................................... 1

17 0308638 Body, Junction box..................................................................... 1

18 0501533 Nut, Plain 10-32 Brass............................................................... 2

19 0501472 Washer, Flat #10 Brass............................................................... 2

20 0501493 Washer, Lock #10 Ext. Tooth Brass ........................................... 1

21 0501403 Screw, 10-32 x 3/4" Lg. Round Head Brass............................... 1

22 107964 Bushing, Snap............................................................................. 1

23 100007 Screw, 10-32 x 3/8" Lg. Truss Head........................................... 4

24 0504538 Screw, 10-32 x 3/8" Lg. Truss Head Steel.................................. 2

25 0504951 Terminal Block........................................................................... 1

26 0308627 Cover, Junction Box................................................................... 1

- 110997 Wire, Jumper, Heater Element (Not Shown).............................. 1

- 0307356 Insulation, Heater Terminal (Not Shown).................................. 1

- 0508397 Label, Cover Warning (Not Shown)........................................... 1

32

REPLACEMENT PARTS

TO DETERGENT

SUPPLY

21

20

19

16

17

22

18

22

16

11

10

9

13

12

8

7

6

4

3

2

1

5

TO FILL

ASSY

15

14

00022

Figure 9 — Detergent Pump Assembly

33

REPLACEMENT PARTS

DETERGENT PUMP ASSEMBLY

All Models

Fig. 9 Part Description Qty
Item No. No.

1 0503757 Motor, Pump............................................................................... 1

2 0308637 Bracket, Detergent Pump (UH-150B, UH-150)......................... 1

3 0308610 Bracket, Detergent/Sanitizer Pumps (UL-150).......................... 1

4 N/A Screw, M4 x 35mm Hex Head ................................................... 4

5 100007 Screw, 10-32 x 3/8" Lg. Truss Head........................................... 2

6 N/A Housing, Pump........................................................................... 1

7 0501497 Washer, Lock #8 Split ................................................................ 2

8 0504822 Screw,8-32 x 1/2" Lg. Pan Head ................................................ 2

9 0501425 Screw, 8-32 x 5/8" Round Head................................................. 2

10 N/A Screw, Set M6 x 8mm ................................................................ 1

11 N/A Rotor Assembly.......................................................................... 1

12 108194 Hose, Pump ................................................................................ 1

13 N/A Cover, Pump Housing ................................................................ 1

14 N/A Washer, Flat M4......................................................................... 4

15 N/A Nut, Wing M4............................................................................. 4

16 0501519 Tie Wrap, Hose........................................................................... 2

17 0502667 Hose, Detergent, 1/4" I.D. PVC (Clear)..................................... A/R

18 0502644 Elbow, 1/4" O.D. x 90° Barbed .................................................. 2

19 0503695 Label, Detergent......................................................................... 1

20 0306363 Tube, Pick-Up ............................................................................ 1

21 0501869 Strainer, Pick-Up Tube............................................................... 1

22 0501519 Tie Wrap, Hose........................................................................... 2

- 109829 Pump Head Assy. (includes items 4, 6, 10-15)

- 0708559 Pump/Motor Assy. (includes items 1, 2, 4, 6-16, 18)

34

REPLACEMENT PARTS

TO CHEMICAL SUPPLY

14

13

12

11

10

10

15

9

8

7

6

5

2

3

1

4

DETERGENT
PUMP (SEE FIG. 9)

TO FILL
SYSTEM

00002

Figure 10 — Sanitizer/Rinse Aid Pump Assembly

35

REPLACEMENT PARTS

SANITIZER/RINSE AID PUMP

UL-150

Fig. 10 Part Description Qty
Item No. No.

1 0503756 Motor, Pump............................................................................... 1

2 0308610 Bracket, Detergent/Sanitizer Pump (UL-150)............................ 1

3 0308697 Bracket, Rinse-Aid Pump........................................................... 1

4 100007 Screw, 10-32 x 3/8" Lg. Truss Head........................................... 2

5 0501497 Washer, Lock #8 Split ................................................................ 4

6 0504822 Screw, 8-32 x 1/2" Lg. Pan Head ............................................... 4

7 0707142 Rotor Assy.................................................................................. 1

8 0706635 Element Tube Assy (45cc/min).................................................. 1

9 0506589 Screw, 6-32 x 7/8" Lg. Pan Head ............................................... 2

10 0502666 Hose, 1/8" I.D. PVC (Clear)....................................................... A/R

11 0503694 Label, Sanitizer (UL-150).......................................................... 1

12 0505483 Label, Rinse-Aid (Optional)....................................................... 1

13 0306363 Tube, Pick-Up ............................................................................ 1

14 0501869 Strainer, Pick-up Tube................................................................ 1

15 0501519 Tie Wrap, Hose........................................................................... 2

- 0708561 Detergent/Sanitizer Pump Assy. (UL-150) ................................ 1

(lncludes Detergent Pump and Items 1, 2, 5-9)

- 0708754 Rinse-Aid Pump Assy.
(Includes Items 1, 3-10, 12-15)

36

REPLACEMENT PARTS

FROM
DRAIN
VALVE

12

11

10

9

13

14

12

11

TO DRAIN

8

7

6

5

4

3

2

1

00003

Figure 11 — Drain Pump Assembly

37

REPLACEMENT PARTS

OPTIONAL EXTENDED REACH

DRAIN PUMP ASSEMBLY

Fig. 11 Part Description Qty
Item No. No.

1 0308119 Bracket, Pump Hold Down ........................................................ 1

2 0501419 Bolt, 1/4-20 x 1/2" Lg. Hex Head .............................................. 2

3 0501501 Washer, Lock 1/4" Split.............................................................. 2

4 N/A Motor, Pump............................................................................... 1

5 N/A Backing Plate, Pump.................................................................. 1

6 0508370 Gasket, Pump Volute.................................................................. 1

7 0508369 Impeller, Pump ........................................................................... 1

8 0508368 Volute, Pump.............................................................................. 1

9 N/A Screw, 10-24 x 1-5/8" Lg. Pan Head.......................................... 3

10 0508141 Adapter, 3/4 MPT x 1/2" Hose Barb PVC................................. 1

11 0507265 Hose, 5/8" I.D. x 7/8 O.D., Braided........................................... A/R

12 0503679 Clamp, Hose............................................................................... 2

13 0508139 Coupling, 1/2" NPT PVC........................................................... 1

14 0508140 Elbow, 1/2 MPT x 1/2" Hose Barb x 90° PVC .......................... 1

- C35065 Drain Pump Assy. (Includes Items 4-9)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

40

40

41

39

25

26

27

29

30

31

32

33

34

35

36

37

38

TO BOOSTER

TO TANK

TO TANK

29

29

28

28

45

1

9

6

28

19

42

43

44

00019

46

49

47

48

50

38

REPLACEMENT PARTS

Figure 12 — Control Cabinet

39

REPLACEMENT PARTS

CONTROL CABINET ASSEMBLY

UH-150B, UH-150, UL-150

Fig. 12 Part Description Qty
Item No. No.

1 113622 Thermometer, 4ft Gas Filled (Replaces 108391)....................... 1

2 0508551 Lamp, Green............................................................................... 1

3 0508552 Decal, Control Panel (All except UH-150B, UH-150) .............. 1

4 0508553 Decal, Control Panel (UL-150) .................................................. 1

5 0708635 Control Panel.............................................................................. 1

6 0501361 Switch, Rocker (UH-150B, UH-150)......................................... 2

7 0501361 Switch, Rocker (UL-150)........................................................... 1

8 0501369 Switch, Rocker, Spring-Return (UH-150B, UH-150)................ 1

9 0501369 Switch, Rocker, Spring Return (UL-150)................................... 2

10 0504911 Screw #6 x 1/4" Lg. (Sheet Metal) Pan Head............................. 6

11 0504956 Motor, Timer .............................................................................. 1

12 0501379 Switch,Timer UH-150B, UH-150)............................................. 8

13 0501379 Switch, Timer (UL-150)............................................................. 9

14 0708538 Timer Assy (includes items 11, 12, 38)

(UH-150B, UH-150 prior to S/N W7604) ................................. 1

15 0708590 Timer Assy (includes items 11, 13, 38)

(UL-150 prior to S/N W7604).................................................... 1

16 0708590 Timer Assy (includes items 11, 13, 38)

(UL-150 prior to S/N W7604).................................................... 1

17 — No Longer Available

18 0501373 Switch, Toggle, 3 Position (UH-150B)...................................... 1

19 107964 Bushing, Snap............................................................................. 2

20 0508554 Contactor, 2 Pole, 50 AMP (240V) (UH-150B) ........................ 1

21 0308641 Cover, Contactor (UH-150B)..................................................... 1

22 0503749 Terminal Block........................................................................... 1

23 0501358 Relay, Start................................................................................. 1

**24 109069 Thermostat w/capillary............................................................... 1

25 0300096 Bracket, Tank Heat, Thermostat................................................. 1

26 0501380 Thermostat, Tank Heat, w/Capillary Wash Tank........................ 1

27 0708525 Control Box................................................................................ 1

28 0501412 Screw, 10-32 x 3/8" Lg. Truss Head........................................... 11

29 0503648 Screw, 8-32 x 1/4" Lg. Pan Head............................................... 4

30 0501463 Screw, 8-32 x 1" Lg. Round Head.............................................. 1

31 0501450 Screw, 6-32 x 1/4" Lg. Round Head........................................... 2

32 0501403 Screw, 10-32 x 3/4" Lg. Round Head Brass............................... 1

33 0501493 Washer, Lock #10 Ext. Tooth..................................................... 1

34 0501472 Washer, Flat #10 Brass .............................................................. 2

35 0501533 Nut, Plain 10-32 Brass ............................................................... 2

36 0508572 Label, Cam (UH-150B, UH-150)............................................... 1

37 0508589 Label, Cam (UL-150)................................................................. 1

40

REPLACEMENT PARTS

CONTROL CABINET ASSEMBLY (cont’d)

UH-150B, UH-150, UL-150

Fig. 12 Part Description Qty
Item No. No.

38 0503701 Bearing, Timer Shaft.................................................................. 1

- 0501292 Power Cord (UH-150, UL-150) (Not Shown)............................ 1

39 112185 Bracket, Ranco thermostat ......................................................... 1

40 — Sheetmetal screw (#8 x 3/16") ................................................... 2

41 — Screw (6/32 x 1/4") .................................................................... 2

42 0309433 Bracket, Relay............................................................................ 1

43 0509428 Relay (15A, 120VAC)................................................................ 1

44 0501408 Screw (8-32 x 1/4").................................................................... 2

45 0501538 Nut, (8-3/2 Hex)......................................................................... 2

46 0508572-1 Label, Cam Adjust (After S/N W7604) ..................................... 1

47 111069 Relay 2PDT 10 Amp 240VAC (After S/N W7604)................... 1

48 100007 Screw 10-32 x 3/8 Truss Head (After S/N W7604)................... 2

49 0710583 Timer Assy. (Includes items 11, 12, 38) (After S/N W7604)..... 1

50 0308641-1 Electric Box Divider RS (After S/N W7604)............................. 1

- 0508556 Wire Harness (For Timer Assy. 0708538 and 0708590)

- 0510619 Wire Harness (For Timer Assy. 0710583)

**Note: Ranco Thermostats are no longer available. Use P/N 109069 instead.

41

ELECTRICAL SCHEMATICS

ELECTRICAL

SCHEMATICS

42

ELECTRICAL SCHEMATICS

Figure 13 - Electrical Diagram, UH-150B

S/N After W7604

43

ELECTRICAL SCHEMATICS

Figure 14 - Electrical Diagram, UH-150B

S/N Prior to W7604

44

ELECTRICAL SCHEMATICS

Figure 15 - Electrical Diagram, UH-150

45

ELECTRICAL SCHEMATICS

Figure 16 - Electrical Diagram, UL-150

46

ELECTRICAL SCHEMATICS

29

SS SERVICE SWITCH

39

NO

GND

GND

9

40

CAM 1 HOMING
CAM 2 PUMP MOTOR
CAM 3

PUMP MOTOR REVERSING

CAM 4 DRAIN
CAM 5 FILL

CAM 6 RINSE
CAM 7 DETERGENT
CAM 8 CYCLE
CLT CYCLE ON LIGHT

BLK BLACK
BLU BLUE

BHTR BOOSTER HEATER

NO

COIL

115 VAC

3

32

5

NC

NC

NC

NO
NC

HLTS HIGH LIMIT THERMOSTAT

DP DRAIN PUMP (IF USED)

EC/D EXTENDED CYCLE/DELIME

NC

NO

MSW

MAIN SWITCH ON/FILL OFF/DRAIN

CTC CONTACTOR COIL

GRN GREEN

DM DETERGENT MOTOR

DV DRAIN VALVE
FV FILL VALVE

GND GROUND

DSS DOOR SAFETY SWITCH

CT CONTACTOR

17

17
8

CAM 6

16

16
8

CAM 7

8

CAM 4

1CR RELAY
RM RINSE MOTOR (IF USED)

TP THERMAL PROTECTOR
WHT WHITE

WTS WATER THERMOSTAT

SRC

CURRENT OPERATED START RELAY COIL

WHTR WATER HEATER

TM TIMER MOTOR

PSDR

PRIME SWITCH DETERGENT, RINSE

(IF USED)

22

RM

3

38

21

DM

D V

20

3

3

DSS

1CR

3

0508975/A

CAM 3

NC

4

NO

CAM 8

NC

NO

38

32

35

NC

NO

NC

35

32

MSW

NO

4

5

SS

2

2

31

31

SRC

NC

NO

24

NO

NO

NO

34

27

17

4

PSDR

1CR

NC

16

CAM 1

7

26

NC

NO

26

NC

CAM 2

24

26

CAM 5

27

9

NO

NC

NC

88

33

6

5

5

1

2

BHTR

EC/D

WTS

30

WTS

10

HLTS

NC

NO

NC

28

BOOSTER TANK

CT

1

NO

CTC

33

40

/RINSE

DRAIN

(IF USED)

20

DP

19

F V

15

3

3

15

14

12

NO

8

WASH/

13

CLT

TM

3

RED

START CCW

MAIN

TP

WHT

GRN

5

4

BLK

3

2

START CW

BLU

1

3

3

33

HLTS

11

3

WHTR

115 VAC

230V

TO CUSTOMER DISCONNECT SWITCH

1

GND

FUSE

32

5

37

36

XFMR

38

CUSTOMER TO SUPPLY RATED
VOLTAGE/PHASE/Hz, AS SPECIFIED
PER ORDER, TO DISCONNECT SWITCH.
ALL POWER SUPPLIED TO EACH CONNECTION
POINT MUST COMPLY WITH ALL LOCAL
ELECTRICAL CODES.

3

00010

Figure 17 - Electrical Diagram, UH-150B (50 Hz)

47

TIMING CHARTS

Figure 18 - Timer Chart and Diagram, UH-150B, UH-150

Beginning with S/N W7604

0

10 20 30 40 50 60 70 80 90 100 110 120 130 140

TIME IN SECSCAM

1

2

2

3

4

5

6

7

8

WASH PUMP

WASH PUMP

WASH PUMP
REVERSING CAM

DRAIN VALVE

FILL VALVE
RINSE

DETERGENT

AUTO-FILL

HOMING

CAM

PUMP

DRAIN

PUMP

TIMING CHART 501HT

150

FORWARD=WASH

REVERSE=DRAIN

DRAIN PUMP

OPTIONAL

SYNCHRON

87654321

TIMER MOTOR

LOCKING SCREW

TIMER
SWITCH
DETAIL

NCN

O

COM.

00014

9

RINSE
SENTRY

If booster thermostat is calling for heat,
cam 9 will pause wash cycle until it reaches
82°C/180°F.

9

OPTIONAL

TIMING CHART UH-150B, UH-150

TIMER ASSEMBLY UH-150B, UH-150

48

TIMING CHARTS

TIMING CHART 501LT

9

0

10 20 30 40 50 60 70 80 90 100 110 120 130 140

TIME IN SECSCAM

1

2

2

3

4

5

6

7

8

WASH PUMP

WASH PUMP

WASH PUMP
REVERSING CAM

DRAIN VALVE

FILL VALVE
RINSE

DETERGENT

AUTO-FILL

HOMING
CAM

PUMP

DRAIN

PUMP
SANITIZER

PUMP

150

FORWARD=WASH

REVERSE=DRAIN

DRAIN PUMP

TIMER ASSEMBLY 501LT

SYNCHRON

897654321

TIMER MOTOR

LOCKING SCREW

TIMER
SWITCH
DETAIL

NCN

O

COM.

00016

Figure 19 - Timer Chart and Diagram, UH-150B, UH-150

Prior to S/N W7604

TIMING CHART UH-150B, UH-150

TIMER ASSEMBLY UH-150B, UH-150

49

TIMING CHARTS

TIMER ASSEMBLY UL-150

TIMING CHART 501LT

9

0

10 20 30 40 50 60 70 80 90 100 110 120 130 140

TIME IN SECSCAM

1

2

2

3

4

5

6

7

8

WASH PUMP

WASH PUMP

WASH PUMP
REVERSING CAM

DRAIN VALVE

FILL VALVE
RINSE

DETERGENT

AUTO-FILL

HOMING

CAM

PUMP

DRAIN

PUMP
SANITIZER

PUMP

150

FORWARD=WASH

REVERSE=DRAIN

DRAIN PUMP

SYNCHRON

897654321

TIMER MOTOR

LOCKING SCREW

TIMER
SWITCH
DETAIL

NCN

O

COM.

00016

Figure 20 - Timer Chart and Diagram, UL-150

TIMING CHART UL-150