Champion U-HB Service Manual

The Dishwashing Machine Specialists

Technical Manual

Undercounter
Dishwasher

Model

U-HB
High Temperature
with Built-In Booster

U-H1
High Temperature

U-LD
Low Temperature

June, 1995

P.O. Box 4149
Winston-Salem, North Carolina 27115-4149

Champion Industries, Inc.

Manual P/N 111752-1

Champion

Fax: [phone]

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 _____________

_____________________________________________________________________________

Champion Service Agency___________________________________ Phone _____________

_____________________________________________________________________________

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

We strongly recommend that you fax your orders.

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

COPYRIGHT © 1994, 1995 by Champion Industries, Inc.

U-LD

U-H1/U-HB

Machine Data Plate

with
Model & Serial number
located on right side of
front panel.

Machine Data Plate

with
Model & Serial number
located on left side of
front panel.

Champion

Champion

Revision History

Revision Revised Serial Number Comments

Date Pages Effectivity

12/30/92 — 84299 Air Trap/Pressure Switch

changed to Float switch/
Fill Timer for automatic fill
and low water protection for
Models U-H1/U-HB

1/13/94 — 85680 Relocated final rinse

thermometer to back of machine,
added brass cross and barb fittings

1/1/95 — Issued Manual P/N 111752-1

which supercedes Manual P/N 111752
dated May, 1994. For machines
beginning with S/N 84299 and above

1/1/95 22 — Corrected Pump/Motor Removal

Instructions (Step 7)

1/1/95 23 — Added Door Switch and Magnet

to illustration

1/1/95 29 — Corrected Item #16, changed P/N

104741 to P/N 108349

1/1/95 30 — Added Solenoid Valve detail

1/1/95 33 — Corrected Item #14, changed P/N 104741

to P/N 108349

1/1/95 34 — Added Solenoid Valve detail

1/1/95 39 — Corrected Item #19, changed P/N 110210

to 110211

1/1/95 57 — Corrected Item #4, changed P/N 108265 to

P/N 107550, changed 1/2" to 3/4"

4/10/95 52-53 87075 Redesigned U-HB Booster Tank for machines

beginning with S/N 87075 and above

2/9/96 53 87724 Changed control thermostats to P/N 112204

REVISIONS

CONTENTS

Page

The Dishwashing Formula .........................................................................................................5

WARRANTY .............................................................................................................................6

INTRODUCTION......................................................................................................................7

GENERAL .................................................................................................................................8

Model Numbers ...................................................................................................................8

Standard Equipment ............................................................................................................8

Options ................................................................................................................................8

Accessories ..........................................................................................................................9

Electrical Power Requirements ...........................................................................................9

INSTALLATION........................................................................................................................9

Unpacking ..........................................................................................................................9

Electrical Connections.........................................................................................................10

Plumbing Connections.........................................................................................................10

Water Connections...............................................................................................................10

Drain Connections ...............................................................................................................11

Chemical Connections.........................................................................................................12

Models U-H1 and U-HB...............................................................................................12

Model U-LD..................................................................................................................12

INITIAL START-UP ..................................................................................................................13

Model U-H1 and U-HB.......................................................................................................13

Model U-LD ........................................................................................................................13

OPERATION ..........................................................................................................................14

Model U-H1 and U-HB.......................................................................................................14

Model U-LD ........................................................................................................................15

MAINTENANCE.......................................................................................................................16

Maintenance Schedule.........................................................................................................16

CLEANING ..................................................................................................................16

Every 2 Hours or After Each Meal Period.............................................................16

Model U-H1 and U-HB ...................................................................................16

Model U-LD.....................................................................................................16

Every 8 Hours or at the End of the Day.................................................................16

Model U-H1 and U-HB ...................................................................................16

Model U-LD.....................................................................................................17

DELIMING ...................................................................................................................17

Deliming process ....................................................................................................17

Model U-H1 and U-HB ...................................................................................17

Model U-LD.....................................................................................................18

OPERATION CHECKS................................................................................................18

Daily .......................................................................................................................18

Weekly ....................................................................................................................18

2

CONTENTS

CONTENTS

Page

TROUBLESHOOTING .............................................................................................................18

BASIC SERVICE.......................................................................................................................20

Electrical Service.................................................................................................................20

Motor Connections........................................................................................................20

Timed Fill/Low Water Tank Heat Protection................................................................20

Mechanical Service..............................................................................................................21

Timer Cam Adjustments ...............................................................................................21

Pump Seal Replacement ...............................................................................................22

U-HB Component Diagram ..........................................................................................23

REPLACEMENT PARTS LIST ................................................................................................24

ELECTRICAL SCHEMATICS .................................................................................................58

TIMER CHARTS.......................................................................................................................60

LIST OF FIGURES

Figure 1— Drain Connection U-H1/U-HB ..............................................................................11

Figure 2— Drain Connection U-LD.........................................................................................11

Figure 3— U-H1/U-HB Chemical Connection Points .............................................................12

Figure 4— Pump Motor Wiring Diagrams U-H1/U-HB/U-LD ...............................................20

Figure 5— U-H1/U-HB Timer Chart........................................................................................21

Figure 6— U-LD Timer Chart ..................................................................................................21

Figure 7— U-LD Timer Cam Locations ..................................................................................21

Figure 8— Pump Seal Replacement.........................................................................................22

Figure 9— Panels and Gauges..................................................................................................24

Figure 10—Door, Tracks, Safety Switch...................................................................................26

Figure 11—U-H1/U-HB Plumbing............................................................................................28

Figure 12—U-H1/U-HB Fill Solenoid Valve and Piping..........................................................30

Figure 13—U-LD Plumbing ......................................................................................................32

Figure 14—U-LD Fill Solenoid Valve and Piping ....................................................................34

Figure 15—U-LD Chemical Dispensing System ......................................................................36

Figure 16—U-H1/U-HB Float Switch, Sump, Pump Hoses .....................................................38

Figure 17—U-LD Sump, Pump Hoses, Drain Assembly..........................................................40

Figure 18—U-H1/U-HB Wash Arm Assembly.........................................................................42

Figure 19—U-LD Wash Arm Assembly ...................................................................................44

Figure 20—Pump/Motor Assembly...........................................................................................46

Figure 21—U-H1/U-HB Control Cabinet .................................................................................48

Figure 22—U-LD Control Cabinet............................................................................................50

Figure 23—U-H1/U-HB Thermostats, Booster Assembly, Wash Tank Element......................52

Figure 24—U-H1/U-HB/U-LD Drain Lift Kits (Optional).......................................................54

Figure 25—Dishracks, Strainer, PRV ........................................................................................56

Figure 26—U-H1/U-HB Electrical Schematic ..........................................................................58

Figure 27—U-LD Electrical Schematic ....................................................................................59

Figure 28—Timer Charts (U-H1/U-HB) and U-LD..................................................................60

3

CONTENTS

4

NOTES

NOTES

The Dishwashing Formula

Five Elements for Cleaning Dishes

A Perfect Score means Clean Ware for your customers...

Peak Dishwasher Performance for you.

Point Value

1. Temperature ......................................................................

20

Heated water penetrates and loosens soil on dishes.

2. Time ..................................................................................

20

Wash and rinse times (set by NSF and Champion) allow everything to work.

3. Mechanical Action ............................................................ 20

Pumps produce water pressure which flushes the soil off dishes.

4. Chemical Action ...............................................................

20

Detergent breaks down grease and loosens soil particles.

5. Procedure..........................................................................

20

Pre-scraping and rinsing removes large food particles from the dishes.

SCORE 100

5

6

WARRANTY

LIMITED WARRANTY

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 L0R 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 CHAMPION DISHWASHING
MACHINES 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.

INTRODUCTION

Welcome to Champion...

and thank you for allowing us to take care of your dishwashing needs.

This manual covers the undercounter series dishwasher models U-H1, U-HB, and U-LD.
Your machine was completely assembled, inspected, and thoroughly tested at our factory before
it was shipped to your installation site.

This manual contains:

• Warranty Information

• Operation and Cleaning Instructions

• Maintenance Instructions

• Troubleshooting Guide

• Basic Service Information

• Replacement Parts Lists

• Electrical Schematics

Complete and return your warranty registration card within ten (10) days after the
installation of your machine.

All information, illustrations and specifications contained in this manual are based
upon the latest product information available at the time of publication. Champion constantly
improves its products and reserves the right to make changes at any time
or to change specifications or design without notice and without incurring obligation.

For your protection, factory authorized parts should always be used for repairs.

Replacement parts may be ordered directly from Champion Industries* or
from your Champion authorized parts distributor or authorized service agency.
When ordering parts, please supply the model number, serial number, voltage,
and phase of your machine, the part number, part description and quantity.

*Champion Industries can only ship parts to customers by C.O.D.

7

INTRODUCTION

GENERAL

This manual covers the Champion undercounter dishwashing machine.
These machines are fully automatic and come equipped with a 3/4 HP pump motor.
All models are available for mounting directly to the floor or on optional stands.

The U-series dishwasher is available in the following models:

Model Numbers

U-H1, U-HB, U-LD

The U-H1 model is a high temperature (82°C/180°F rinse)
sanitizing model without booster.

The U-HB model is a high temperature (82°C/180°F rinse)
sanitizing model with booster.

The U-LD is a low temperature (Min. 49°C/120°F-60°C/140°F Optimum) sanitizing model for
use with a sodium hypochlorite (Chlorine) based sanitizer at a minimum concentration of
50PPM in the final rinse. A three pump chemical dispensing system for detergent, sanitizer and
rinse aid is included.

Standard Equipment includes:

U-H1 & U-HB U-LD

• Top mounted slide-out control cabinet • Top mounted slide-out control cabinet

• Common utility connections • Common utility connections

• Fully automatic wash & rinse cycle • Fully automatic wash & rinse cycle

• Self-sealing gasketless door • Self-sealing gasketless door

• Door safety switch • Door safety switch

• Upper & lower wash/rinse arms • Upper & lower wash/rinse arms

• 90 second time cycle • 150 second time cycle

• Electric tank heater • Three built-in chemical dispensing

• Low water tank heat protection pumps

• 3/4HP (208-240V/60/1) wash motor • 3/4HP (115V/60/1) wash motor

• Stainless steel heavy gauge construction, • Stainless steel heavy gauge construction,

including base including base

• Two dish racks (peg and flat bottom) • Two dish racks (peg and flat bottom)

• Built-in electric booster heater (U-HB Only) • 1-1/4” I.D. GRAVITY drain connection

(4°C/40°F temperature rise)

• 1-1/4” I.D. GRAVITY drain connection

Options

Electric booster (21°C/70°F temperature rise ) heater for
43°C/110°F supply water (U-HB only) N/A

Pumped drain lift-out Kit (U-H1 and U-HB) P/N 403898
Drain lift kit (U-LD) P/N 403801

P-Trap (U-H1 and U-HB) P/N 403836
Unmounted Pressure Regulating Valve (3/4” PRV) P/N 107550
1-1/4” flexible drain hose (order by the foot) P/N 111032

8

GENERAL

Accessories

Combination 1-RDT table w/ cabinet and sink (specify right hand or left hand sink)

Optional sprayhose for 1-RDT P/N 100243
Wall overshelf for 1-RDT (holds two racks) P/N 108189
16” Stainless steel stand P/N 305222
6” Stainless steel leg set (Qty.4) P/N 305221
Additional dishracks:
Dish rack (peg) P/N 101285
Silverware rack (flat bottom) P/N 101273

Electrical Power Requirements

Model Voltage Booster Rise Machine Power Requirement

(U-HB Only) Full Load Amps (125% Service Factor)

U-H1 208/60/1 — 12 Amps 15 Amps
U-H1 220/60/1 — 11 Amps 14 Amps
U-H1 230/60/1 — 11 Amps 14 Amps
U-H1 240/60/1 — 11 Amps 14 Amps

U-HB 208/60/1 40°F 44 Amps 55 Amps
U-HB 220/60/1 40°F 44 Amps 55 Amps
U-HB 230/60/1 40°F 46 Amps 58 Amps
U-HB 240/60/1 40°F 48 Amps 60 Amps
U-HB 208/60/1 70°F 58 Amps 73 Amps
U-HB 220/60/1 70°F 60 Amps 75 Amps
U-HB 230/60/1 70°F 62 Amps 76 Amps
U-HB 240/60/1 70°F 64 Amps 80 Amps

U-LD 115/60/1 — 12 Amps 15 Amps

INSTALLATION

Unpacking

CAUTION:

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

1. Immediately after unpacking the 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 machine
and adjusting the feet. Level the machine front-to-back and side-to-side.

4. Remove the two dishracks from the interior of the machine.

5. Remove the lower access panel in preparation for service connections.

9

INSTALLATION

!

INSTALLATION (Cont.d)

NOTE:

The installation of your machine must meet local health codes.

Some locales may require the base of the machine to be sealed at the floor.

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 place a tag at the
disconnect switch to indicate work is being done on that circuit.

1. A qualified electrician must compare the electrical power supply with the machine
electrical specifications stamped on the MACHINE ELECTRICAL CONNECTION
PLATE located inside the top mounted control cabinet before connecting to the incoming
service at a fused disconnect switch.

NOTE:

U-H1 and U-HB models require a 208-240V/60Hz/1PH,
2-wire plus ground electrical supply.
U-LD model requires a 115V/60Hz/1PH ,
2-wire plus ground electrical supply.

2. A knock-out is provided at the rear of the top mounted slide-out control cabinet for the
electrical service connection. A fused disconnect switch or circuit breaker (supplied by
others) is required to protect each power supply circuit.

NOTE:

INSTALLER SHOULD PROVIDE SUFFICIENT CABLE TO ALLOW TOP MOUNTED
SLIDE-OUT CONTROL CABINET TO EXTEND FULLY.

Plumbing Connections

CAUTION:

Plumbing connections must comply with local sanitary and plumbing codes.

Water Connections

1. HOT WATER connection can be made to the machine via the 6 foot reinforced
fill hose supplied with the machine. The fill hose is equipped with a 3/4” NPT connector
and exits the back of the machine.

2. Minimum incoming water supply temperature requirements are listed below

U-HB with built-in 40° rise electric booster (Minimum 60°C/140°F)
(Min./Max. flow pressure 138 kPa/20-22 PSI)

U-HB with built-in 70° rise electric booster (Minimum 43°C/110°F)
(Min./Max. flow pressure 138 kPa/20-22 PSI)

10

INSTALLATION

!!!

Water Connections (Cont.d)

U-H1 without built-in booster (Minimum 70°C/180°F)
(Min./Max. flow pressure 138 kPa/20-22 PSI)

U-LD (Minimum 49°C/120°F - 60°C/140°F Optimum)
(Min./Max. flow pressure 138 kPa/20-22 PSI)

3. A manual shut-off valve (supplied by others) should be installed in supply line to allow for
servicing of the machine.The shut-off valve should be the same size
or larger than the supply line.

4. A “Y” line strainer (supplied by others) is recommended on the incoming water supply line
as close to machine as possible, but before the pressure regulating valve.

5. A 3/4” Pressure Regulating Valve (PRV),(supplied by others), should be installed on the
incoming water supply line if water flow pressure exceeds 138 kPa/20-22 PSI.

Drain Connections

1. Models U-H1, U-HB, and U-LD are GRAVITY DRAIN machines equipped
with a 1-1/4” hose connection point.

• Drain height for models U-H1 and U-HB must not exceed 4-1/2” above floor level.

• Drain height for model U-LD must not exceed 7-1/2” above floor level.

NOTE:

For drain heights in excess of those listed above,
OPTIONAL drain lift kits are available (See Options, Pg.8)

WARNING:

Connection of the machine to a drain line higher than the machine drain height
will prevent the machine from draining properly.

Refer to Figure 1 and 2 below for machine drain connection locations.

Figure 1 Figure 2

1-1/4” Drain Connection 1-1/4” Drain Connection

U-H1/U-HB U-LD

Rear View of Machine Rear View of Machine

11

INSTALLATION

Drain Connection

Drain Connection

!

Chemical Connections

NOTE:

Consult a qualified chemical supplier for your chemical needs.

Models U-H1 and U-HB

1. Labeled connection points (See Fig. 3) are provided inside the
control cabinet for chemical dispensing equipment (supplied by others).

Connection points include:

• Detergent signal 208-240VAC

between Wire #7 and Wire #2 .
(1 Amp Max Amperage Draw)

• Rinse aid signal 208-240VAC

between Wire #8 and Wire #2
(1 Amp Max Amperage Draw)

Figure 3

U-H1/U-HB Chemical Connection Points

2. Detergent injection point and location of conductivity cell must be provided
by a qualified chemical supplier.

3. Detergent may be added manually for U-H1/U-HB models not equipped with dispensing
systems. Consult your local chemical supplier for the correct amount
of non-c

hlorinated automatic dishwashing liquid detergent.

4. U-H1 and U-HB models do not require chemical sanitizing agents.

5. Rinse aid injection point is provided via a 1/2” NPT plug located in the fill manifold
piping The manifold is located after the fill solenoid valve on the center right side of the
machine base behind the gauges.

Model U-LD

1. Equipped with three built-in dispensing pumps for detergent, sanitizer, and rinse aid.

Pump Priming switches are located on the front of the control cabinet.
(See U-LD Initial Start-up for pump priming instructions, (Pg. 13, Step 10).
(See U-LD Service for timer cam settings and adjustments, (Pg. 21)

2. Chemical pick-up tubes are color coded.

• Red = detergent Blue = Rinse aid Clear = Sanitizer
Chemicals are supplied by others.

3. Use an automatic commercial grade liquid detergent.
Use a sodium hypochlorite (Chlorine) based sanitizer at a minimum concentration of
50PPM in the final rinse.
Use chlorine test papers to verify and monitor the 50PPM chlorine level.

4. Use a liquid rinse aid.

WARNING:

Never premix rinse aid with the sanitizing agent. Mixing may cause hazardous gases to form.

CAUTION:

Some metal, including silver, aluminum, and pewter are attacked by sodium hypochlorite
(chlorine sanitizer). Avoid cleaning these metals in a U-LD dishwasher.

12

INSTALLATION

!

!

Rinse Aid

Detergent

INITIAL START-UP

After plumbing and electrical connections are completed,
follow the steps below to place your machine in service.

Model U-H1 and U-HB

1. Remove any foreign material from inside the machine.
Make sure filter, and drain-overflow tube are in place.

2. Close the Door.

3. Turn the water and main power sources to the dishwasher ON.

4 Flip the Power switch to the ON position. The red “power on” light will illuminate and the

machine will automatically fill with water.

5. Check the machine for leaks.

6. Push the Green Start Button to check automatic cycle. Check for leaks.

7. If machine checks okay, remove the drain-overflow tube to drain machine.

8. Flip the power switch to OFF.

Model U-LD

1. Remove any foreign material from inside the machine. Make sure filter, is in place.

2. Close the Door.

3. Turn the water and main power sources to the dishwasher ON.

4 Flip the Power switch to the ON position. The red “power on” light will illuminate.

5. Hold the Fill switch in the “UP” position for about 45 sec. to fill the machine with water.
Machine is full when water level reaches drain overflow located at lower left rear corner
of wash tank interior.

6. Check the machine for leaks.

7. Prime the chemical dispensing pumps.

NOTE:

The pick-up tubes are color coded:
Red = detergent Blue = rinse aid Clear = sanitizer

8. Insert the pick-up tubes in the appropriate chemical containers.

9. Open the door of the machine.

10. Hold each of the three prime switches, located on the front of the control cabinet in the
“UP” position until you see chemical enter the tank interior from all three tubes.

NOTE:

The chemical tubes discharge point is on the right side of the wash tank ceiling.

11. The chemical dispensing system will work automatically until the chemical supply is

used up. Re-prime the dispensing pump after replacing a chemical container.

12. Close the door.

13. Push the the Green start button to check the automatic cycle. Check for leaks.

14. If machine checks okay, hold the drain switch in the “UP” position

until machine drains completely.

15. Flip the power switch to OFF.

13

INITIAL START-UP

OPERATION

Model U-H1 and U-HB

1. Close the door and flip power switch ON Red power light illuminates.
Tank fills automatically and
tank heat comes on

2. Monitor wash tank temperature gauge Wait for temperature reading to reach
Minimum 66°C/150°F

3. Prescrap and load ware into rack Place dishes edgewise in peg rack,
Cups and bowls upside down in flat rack,
Silverware spread evenly in single layer
in flat rack

4. Open door , insert rack

5. Close door, Push Green start button Green cycle light will illuminate
Automatic cycle begins.

Machine washes for 67 sec., then
pauses for 2 sec

6. During final Rinse Machine final rinses for 21 sec.

Monitor pressure gauge and Pressure gauge reading must read
final rinse temperature gauge between 20-22 PSI

Temperature gauge must read
82-91°C/180-195°F

7. 90 second cycle complete Green cycle light goes out

8. Open door, remove clean rack Insert another rack of soiled ware

9. After each meal period or Remove drain-overflow tube and drain

every two hours operation machine. Flush interior and clean sump

filter and pump intake strainer. Check
spray arms and clean if necessary

NOTE:

Opening the door at any time during the cycle will stop the machine.
Closing the door and pushing the Green start button will resume the cycle where it left off.

14

OPERATION

Model U-LD

1. Close the door and flip power switch ON Red power light illuminates

2. Hold the Fill switch in “UP” position Wash tank fills with water
for about 45 sec.

3. Monitor wash tank temperature gauge Temperature reading must be

Min. 120°F/140°F Optimum

4 Prescrap and load ware into rack Place dishes edgewise in peg rack,

Cups and bowls upside down in flat rack,
Silverware spread evenly in single layer
in flat rack

5. Open door , insert rack

6. Close door, Push Green start button Green cycle light will illuminate

Automatic cycle begins.

Machine washes for 62 sec., then
Drains and refills for 56 sec.

7. Monitor temperature gauge Machine final rinses for 32 sec.

Temperature gauge must read a
If wash temperature drops below 120°F, (Minimum 120°-140° F Optimum)
Drain and refill machine.

8. 150 second cycle complete Green cycle light goes out

9. Open door, remove clean rack Insert another rack of soiled ware

10. After each meal period or Hold drain switch in “UP position and
every two hours operation drain machine. Flush interior and clean

filter and strainer plate. Drain again. Check
spray arms and clean if necessary.

NOTE:

Opening the door at any time during the cycle will stop the machine.
Closing the door and pushing the Green start button will resume the cycle where it left off.

15

OPERATION

MAINTENANCE

Cleaning your machine is the best maintenance that you can provide. Components that are not
regularly flushed and cleaned do not perform well.

The Maintenance intervals shown in the following schedules are the minimum requirements
necessary for the proper performance of your machine. Maintenance intervals should be
shortened whenever your machine is faced with abnormal working conditions, hard water, or
multiple shift operations.

Maintenance Schedule

CLEANING

• Every 2 Hours or After Each Meal Period

Model U-H1 and U-HB

1. Flip the power switch OFF.

2. Remove the drain-overflow tube, drain the machine.

3. Flush tank interior with fresh water.

4. Remove and clean the sump filter and pump intake screen.

5. Inspect the spray arm nozzles and clean if necessary.

6. Close door, flip power switch ON to refill machine.

Model U-LD

1. Hold drain switch in “UP” position until tank drains completely.

2. Flip power switch to OFF.

3. Flush tank interior with fresh water.

4. Drain machine again.

5. Remove and clean the sump filter and strainer plate.

6. Inspect the spray arm nozzles and clean if necessary.

7. Close door, flip power switch ON.

8. Hold fill switch in “UP” position to refill machine.

• Every 8 Hours or at the End of the Day

Model U-H1 and U-HB

1. Flip the power switch OFF.

2. Remove the drain-overflow tube, drain the machine.

3. Flush tank interior with fresh water.

4. Remove the sump filter and pump strainer.

5. Remove the spray arms.

6. Clean and inspect the spray arm bearings.

7. Remove the spray arm end plugs by twisting counter-clockwise and pulling.

8. Flush the spray arm pipes and nozzles.

9. Replace the end plugs.

10. Back flush the sump filter and pump intake strainer.

11. Thoroughly clean the exterior of the machine. DO NOT HOSE DOWN WITH WATER.

12. Reassemble the machine. Leave the door open to aid overnight drying.

CAUTION:

DO NOT LEAVE WATER IN WASH TANK OVERNIGHT

16

MAINTENANCE

!

Cleaning (Cont.d)

Model U-LD

1. Hold drain switch in “UP” position until tank drains completely.

2. Flip power switch to OFF.

3. Flush tank interior with fresh water.

4. Remove the sump filter and strainer plate.

5. Remove the spray arms.

6. Clean and inspect the spray arm bearings.

7. Remove the spray arm end plugs by twisting counter-clockwise and pulling.

8. Flush the spray arm pipes and nozzles.

9. Replace the end plugs.

10. Back flush the sump filter and strainer plate

11. Thoroughly clean the exterior of the machine. DO NOT HOSE DOWN WITH WATER.

12. Reassemble the machine. Leave the door open to aid overnight drying.

CAUTION:

DO NOT LEAVE WATER IN WASH TANK OVERNIGHT

DELIMING

Your dishwasher should be delimed regularly depending on the mineral content of your water.
Inspect the machine interior for mineral deposits and use a deliming solution
for the best cleaning results.

NOTE:

Consult your chemical supplier for an appropriate deliming solution.

WARNING:

Deliming solutions 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.

DELIMING PROCESS

Model U-H1 and U-HB (Not equipped with chemical dispensing system)

1. Remove all dishes from machine.

2 Drain the machine and refill with fresh water.

3. Spray interior walls with delimimg solution and let sit for 5 or 10 minutes
depending on amount of build-up. Add deliming solution to wash tank.
Do not let chemicals sit for longer than 15 minutes.

4. Push the Green start button and run an automatic cycle.

5. Repeat Step 3-4 if necessary.

6 Remove the drain-overflow tube and drain the machine.

7. Refill the machine and run a complete cycle two additional times.
Drain and refill the machine after each cycle to thoroughly flush any
deliming solution from the interior of the machine.

8. Flip the power switch to OFF.

9. Drain Machine.

10. Deliming is complete.

17

MAINTENANCE

!

!

DeLiming Process (Cont.d)

Model U-LD

1. Remove all dishes from machine.

2. Remove the chemical pick-up tubes from their containers.

3. Place each tube in a container of fresh water and hold each prime switch in the “UP”
position several minutes to thoroughly flush chemical from the lines. Leave pick-up
tubes out of their containers.

4. Hold the drain switch in the “UP” position to drain the machine.

5. Refill the machine with fresh water and drain again. Then refill with water.

6. Spray interior walls with deliming solution and let sit for 5 or 10 minutes depending on
amount of build-up. Add deliming solution to wash tank.
Do not let chemicals sit for longer than 15 minutes.

7. Push the Green start button and run an automatic cycle.

8. Repeat Step 3-6 if necessary.

9. Hold the drain switch in the “UP” position to drain the machine.

10. Refill the machine and run a complete cycle two additional times.
Drain and refill the machine after each cycle to thoroughly flush any
deliming solution from the interior of the machine.

11. Replace the pick-up tubes in their chemical supplies and reprime the system.

12. Flip the power switch to OFF.

13. Deliming is complete.

OPERATION CHECKS

• Daily

1. Check temperature gauges for proper readings.

2. Check pressure gauge for proper reading (U-H1, U-HB ONLY).

3. Check for leaks.

4. Check chemical supplies and refill as necessary.

• Weekly

1. Inspect all water lines for leaks.

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

3. Check the drains for leaks.

4. Clean accumulated mineral deposits from the tank heating elements (U-H1, U-HB ONLY)

5. Check that float switch moves freely (U-H1,U-HB ONLY).

6. Check and clean chemical dispensing system (U-LD ONLY).

TROUBLESHOOTING

On occasion your machine may not operate as expected.
Use the checklist below before you decide that a mechanical or electrical failure has occurred.

Checklist

1. All switches are ON?

2. Water supply ON?

3. Drain-overflow tube in place? (U-H1 and U-HB Only)

4. Spray arms and nozzles clean?

5. Spray arm end plugs in place?

6. Sump filter, pump strainer clean?

7. Thermostats set correctly? (U-H1, U-HB Only)

8. Door fully closed?

9. Chemical supplies filled?

18

TROUBLESHOOTING

If a problem still exists after verifying the checklist, refer to the following
Troubleshooting Chart.

CONDITION CAUSE SOLUTION

Machine will not start -Door not closed..................................Close door fully

-Main switch OFF ...............................Check breakers or fuses

Low or no water -Main water supply OFF .....................Turn on house water supply

-PRV misadjusted or ..........................Set PRV to 138 kPa/20-22 PSI flowing

defective pressure

Replace PRV

-Line strainer clogged .........................Clean line strainer

Water temperature low -Incoming water temperature .............Raise temperature to:

when in use at machine too low 70°C/180°F for U-H1

60°C/140°F for U-HB 40°F rise booster
43°C/110°F for U-HB 70°F rise booster
60°C/Min 120°F-(140°F Optimum) for U-LD

-U-LD machine left idle......................Drain and refill with fresh hot water

for extended period (Optimum temperature 140°F)

-Thermostats out of

adjustment/defective .........................Readjust or replace thermostats

(U-H1/U-HB Only)

Insufficient pumped -Clogged spray arms ...........................Clean spray arms and nozzles

spray pressure -Sump filter clogged............................Must be kept clean and in place

Low final rinse temperature -Low incoming water ..........................See Solution for (Water temperature low

temperature when in use)

-U-LD set idle .....................................Drain and refill with fresh hot water

-Thermostat misadjusted .....................Adjust or replace booster thermostat

or defective (U-HB Only) (U-HB Only)

Chemical not feeding -No chemical in container...................Replace or refill container

(U-LD Only) -Feed tubes to/from.............................Clean obstruction and flush with hot water

chemical pump clogged

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

Poor washing results -Chemical pump defective ..................Contact your service agent

-Insufficient detergent .........................Check and fill supply

-Detergent setting low.........................Contact chemical supplier

-Wash water temperature ...................See water temperatures above

too low

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

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

-Ware improperly placed ....................Use proper racks. Do not overload racks.

in rack

-Improperly cleaned ...........................Check cleaning schedules

machine

-Electric element has...........................Clean and/or delime

soil/lime build-up.
(U-HB, U-H1 Only)

19

TROUBLESHOOTING

BASIC SERVICE

This Basic Service section does not cover all possible repair procedures. If you require
additional service support, you may call:

Champion National Service

1-800-858-4477

Please have the Model and Serial Number of the machine ready when you call.

Electrical Service

NOTE:

DO NOT USE CHASSIS GROUND WHEN PERFORMING VOLTAGE CHECKS.

Doing so will result in false and inaccurate readings.

PERFORM VOLTAGE CHECKS BY READING FROM THE HOT SIDE OF THE
LINE AND ANY #2 WIRE or white wire.

WARNING:

USE EXTREME CAUTION when performing tests on energized circuits.

WARNING:

When repairing a circuit, disconnect the power at the main service disconnect switch and
place a tag at the disconnect switch to indicate that work is being performed on the circuit.

Motor Connections

Model U-H1 and U-HB use a 208-240V/60Hz/1Ph capacitor start pump motor.
Model U-LD uses a 115V/60Hz/1Ph capacitor start pump motor.

Refer to Fig.4 for the proper wiring of the pump motor and capacitor.

U-H1/U-HB U-LD

Timed Fill/Low Water Tank heat Protection

Models U-H1, U-HB use a float switch and fill timer to control tank fill and tank heat.
Model U-HB built-in booster heater is also controlled by the float switch.

Operation:

1. When power switch is turned on, fill timer runs for a minimum of
90 seconds to fill the tank.

2. Float switch ball rises and allows tank heat and booster heat to energize.

3. If water level drops too low, float switch ball moves down; heat de-energizes and the
fill timer runs for a minimum of 90 seconds to refill the tank.

20

BASIC SERVICE

!

!

Figure 4

Pump Motor Wiring Diagrams

MECHANICAL SERVICE

Timer Cam Adjustments

Model U-H1and U-HB cycle timers are set at the factory and are not adjustable.

See Timer Chart (Fig. 5) for the U-H1/U-HB timer cam settings.

Figure 5 - U-H1/U-HB Timer Chart

Model U-LD cycle timers are adjustable for fill, detergent, rinse aid, and sanitizer times.

The timers are adjusted at the factory before shipment (See Fig.6).

Figure 6 - U-LD Timer Chart

To adjust Model U-LD timer cams:

1. Locate the adjustment tool located near the timer in the control cabinet.

2. Adjust the LEFT HAND side of the cam ONLY.

3. Lock the adjustment tool in the LH side of the cam to be adjusted.

4. TO INCREASE the operating time, hold the RH side of cam stationary while
rotating the LH side of cam toward the rear of the control cabinet.

5. TO DECREASE the operating time, hold the RH side of cam stationary while
rotating the LH side of the cam toward the front of the control cabinet.

(See Fig. 7 for the U-LD cam locations)

Figure 7 - U-LD Timer Cam Locations

21

BASIC SERVICE

Adjustment

Tool

Rinse Aid

Sanitizer

Detergent

Fill

01052015 25 3530 40 5045 55 60

6

TIMER CYCLE 90 SEC.

NOTRA
NC

7

WASH 67 SEC.

NO
NC

NOTRC

RINSE 21 SEC.

DWELL 2 SEC.

NC

CAM
CYCLE
CAM

WASH
CAM

RINSE
CAM

SECOND

TRB

SECOND

TRA

TRB

TRC

TRDNCNO

TRE

TRF

0105152025530 35 40 45 50 55 60 65 70 75 80 85 90 95 100 110 120 130 140105 115 125 135 145 150

NO
NC

WASH 62 SEC.
NO
NC

NO
NC

310

DETERGENT 7 SEC.

NO
NC

NO
NC

TIMER CYCLE 150 SEC.

60

DRAIN 40 SEC.

82 116

100

FILL 34 SEC.

101

101

104

106

7065 8075 85 90

67

69

69

RINSE 32 SEC.

RINSE AID 3 SEC.

SANITIZER 5 SEC.

MECHANICAL SERVICE (Cont.d)

Pump Seal Replacement

1. Disconnect the power to the machine at the main breaker panel or fuse box.

2. Drain the machine.

3. Remove the guage bracket on the front of machine.

4. Remove drain plug on the pump volute and drain the pump.

5. Remove the pump hoses.

6. Pull the pump/motor assembly forward out of the slip bracket in the machine base.

7. Disconnect the wires to the motor at the motor junction box.

8. Remove screws on volute and carefully remove from the pump flange.

9. Lock the motor shaft. The back of motor shaft has a screwdriver slot.

10. Turn the impeller clockwise to remove from shaft. (Shaft has left-hand threads)

11. Remove the spacer and save for reassembly.

12. Remove the old seal and discard.

13. Check seal seat in the pump flange and clean thoroughly.

14. Press rubber seal/ceramic portion of seal assembly into the pump flange.
Use a water soluble lubricant. Be careful to keep the ceramic clean.

15. Install the rotating part of the seal on the shaft with the graphite surface toward the
ceramic. Use a water soluble lubricant.

16. Reinstall spacer, impeller, and new flange gasket. Reinstall screws.

17. Reinstall the pump/motor assembly and reconnect the pump hoses.

18. Test run and check for leaks.

Figure 8

Pump Seal Replacement

22

BASIC SERVICE

3/4 HP Motor

Note: Pump flange is

not a service
replacement part

Pump Flange

Seal Assy.

Impeller

Gasket

Volute

Drain Plug

Screw

Spacer

Model U-HB

Component Diagram

23

BASIC SERVICE

(Pg. 29)

(Pg. 10)

(Pg. 10)

VACUUM
BREAKER

MACHINE
ELECTRICAL
CONNECTION
DATA PLATE

ELECTRICAL
CONNECTION

FILL TIMER

ELECTRICAL
CHEMICAL
CONNECTIONS

(Pg. 50)

DOOR SAFETY
MAGNETIC REED
SWITCH

(Pg. 26)

(Pg. 12)

(Pg. 52)

(Pg. 50)

POWER
SWITCH

(Pg. 50)

GREEN
PUSH BUTTON
START SWITCH

(Pg. 52)

TANK HEATER
ELEMENT

BOOSTER TANK

(Pg. 52)

(Pg. 52)

BOOSTER
HEATER
ELEMENT

HIGH LIMIT
(MANUAL RESET)

(Pg. 10)

WATER
CONNECTION
(6 FT. HOSE)

(Pg. 24)

GAUGES

MODEL NUMBER
SERIAL NUMBER

SPRAY ARMS

MANUAL DRAIN­OVERFLOW TUBE

(Pg. 38)

SUMP

FLOAT SWITCH HEAT
PROTECTION

(Pg. 38)

DOOR SAFETY
SWITCH MAGNET

DRAIN (1-1/4" I.D. HOSE
REQUIRED)

(Pg. 52)

FILL/RINSE VALVE

WASH TANK
HEATER CONTROL
THERMOSTAT

(Pg. 52)

BOOSTER TANK
HEATER CONTROL
THERMOSTAT

(Pg. 52)

(Pg. 42)

(Pg. 38)

(Pg. 26)

(Pg. 30)

24

REPLACEMENT PARTS

Figure 9 - U-H1/U-HB/U-LD Panels & Gauges

9

10

7

6

8

7

6

5

4

3

1

2

3

21

22

22

23

24

25

26

27

28

29

30

31

32

33

Model U-H1/U-HB

11

12

13

19

20

17

18

14

15

Model U-LD

16

1 310138 Panel, front (U-H1, U-HB) ........................................................ 1

2 310530 Panel, front (U-LD) (Not shown)............................................... 1

3 100212 Screw (10-32 x 3/4 Truss Hd).................................................... 2

4 109934 Switch, magnetic (door safety) .................................................. 1

5 108954 Nut, grip (6-32 w/nylon insert) .................................................. 2

6 110868 Clip, mounting............................................................................ 2

7 100097 Screw (10-32 x 1/2 Truss Hd).................................................... 2

8 110223 Top cover assembly (U-H1, U-HB, U-LD) ............................... 1

9 108036 Cap 1-1/4” diameter ................................................................... 4

10 108035 FH leveler (3/8-16)..................................................................... 4

11 110244 Bracket gauge (U-LD)................................................................ 1

12 108391 Thermometer 48” ....................................................................... 1

13 107442 Overlay, temperature (120° - 140°)............................................ 1

14 201029 Locknut (1/2”)............................................................................ 1

15 201041 Washer (7/8 x 1 3/16 x 1/8) ....................................................... 1

16 104889 Compound 440 (Grey putty)...................................................... 1 ft.

17 105254 Bolt (10-32 x 1/2 Hex Hd)......................................................... 2

18 107033 Washer (.208 x .437 x .047)....................................................... 4

19 106486 Washer, lock (#10 split) ............................................................. 2

20 104985 Nut, plain (10-32)....................................................................... 2

21 110263 Bracket, gauge (U-H1, U-HB) ................................................... 1

22 108391 Thermometer, 48” ...................................................................... 2

23 109812 Gauge, pressure 0-100 psi.......................................................... 1

24 104748 Overlay, final rinse (180° - 195°)............................................... 1

25 109816 Overlay, pressure gauge (20-30) ................................................ 1

26 107444 Overlay, temperature (wash)(150° - 170°)................................. 1

27 201029 Locknut (1/2”)............................................................................ 2

28 201041 Washer (7/8 x 1-3/16 x 1/8) ....................................................... 2

29 104985 Nut, plain.................................................................................... 2

30 106486 Washer, lock (#10 split) ............................................................. 2

31 107033 Washer (.208 x .437 x .047)....................................................... 4

32 105254 Bolt (10-32 x 1/2 Hex Hd)......................................................... 2

33 104889 Compound 440 (Grey putty)...................................................... 1 ft.

25

REPLACEMENT PARTS

U-H1/U-HB/U-LD

Panels, Gauges

Fig. 9 Part Part Description Qty.
Item No. No.

26

REPLACEMENT PARTS

Figure 10 - U-H1/U-HB/U-LD Door, Tracks, Safety Switch

1 2

3

2

1

7

4

5

6

17

18

11

12

13

16

8

10

8

9

1112

13

14

11 12

13

15

21

20

19

18

17

1 110228 Pin, door ..................................................................................... 2

2 110229 Support, door.............................................................................. 2

3 0708691 Door (Does not include items 1, 2, 4-7, 17, 18)........................ 1

4 104985 Nut, plain (10-32)...................................................................... 2

5 106486 Washer, lock (#10 split) ............................................................. 2

6 110159 Screw (8-32 x 5/8 Round Hd SST)............................................ 2

7 110233 Catch, door ................................................................................. 1

8 107137 Bolt, (10-32 x 7/8 Hex Hd)........................................................ 4

9 0308693 Rack guide, RH.......................................................................... 1

10 0308692 Rack guide, LH .......................................................................... 1

11 100003 Nut, plain (1/4-20 SST).............................................................. 4

12 106482 Washer, lock (1/4 split) .............................................................. 4

13 100738 Bolt (1/4-20 x 1 Hex Hd)........................................................... 4

14 0308696 Baffle, splash RH ....................................................................... 1

15 0308695 Baffle, splash LH ....................................................................... 1

16 0508694 Stop, door................................................................................... 2

17 109935 Magnet, door safety.................................................................... 1

18 102564 Screw (8-32 x 3/8 Round Hd).................................................... 1

19 108954 Nut, grip (6-32 w/nylon insert) .................................................. 2

20 109934 Switch, magnet (door safety) ..................................................... 1

21 107893 Shock absorber, door.................................................................. 2

27

REPLACEMENT PARTS

U-H1/U-HB/U-LD

Door, Tracks, Safety Switch

Fig. 10 Part Part Description Qty.
Item No. No.

28

REPLACEMENT PARTS

Figure 11 - U-H1/U-HB Plumbing

Final Rinse

Thermometer

Model U-HB Shown

4

14

4

5

Located Inside Wash Tank

27

26

25

23

22

24

13

1

12

2

3

4

5

4

6 7

2

8

9

10 11

13

12

14

1615

17

134

18

19

13

14

13

20

21

Model U-H1 and U-HB Only

Beginning with S/N 85680 and above.
Items 4, 5, 14 added and Final Rinse
Thermometer now located in Item 5, 1/2”
Brass Cross Fitting. (See Photo Below.)
Prior to S/N 85680.
Item 5 was P/N 107892, Tee Connector. Items
4, 14 were not used. Final Rinse Thermometer
was located on Booster for U-HB and on
Manifold for U-H1.

1 109463 Tee, lower wash arm .................................................................. 1

2 109466 O-ring, wash arm tee.................................................................. 2

3 110210 Hose, wash ................................................................................. 1

4 107419 Barb, hose (1/2 x 1/2 NPT brass)............................................... 3

5 100598 Cross (1/2” brass) Beginning w/ S/N 85680.............................. 1

6 100736 Bolt (1/4-20 x 3/4 Hex Hd)....................................................... 4

7 110881 Washer, sealing (not shown) ...................................................... 4

8 100141 Nut , grip (1/4-20 SST) .............................................................. 4

9 109459 Tee, upper wash.......................................................................... 1

10 110215 Screw, special ............................................................................. 1

11 104889 Compound 440 (Grey putty)...................................................... 1 ft.

12 105993 Clamp, hose................................................................................ 2

13 111750 Clamp, hose................................................................................ 8

14 108528 Barb, hose (1/2 x 1/2 NPT 90° brass)........................................ 2

15 100500 Breaker, vacuum (1/2”) .............................................................. 1

16 108349 Kit, repair vacuum breaker (not shown) .................................... 1

17 310198 Bracket, vacuum breaker............................................................ 1

*18 107417 9” hose (1/2” ID)........................................................................ 1

*19 107417 17” hose (1/2” ID)...................................................................... 1

*20 107417 34” hose (1/2” ID)...................................................................... 1

*21 107417 24” hose (1/2” ID)...................................................................... 1

22 109468 Arm Support, lower wash .......................................................... 1

23 110440 Bolt (25mm Hex Hd) ................................................................. 4

24 110214 Dull Nut (M6) ............................................................................ 4

25 109460 O-ring, lower wash arm ............................................................. 1

26 109466 O-ring, lower wash arm ............................................................. 1

27 109467 O-ring, lower wash arm ............................................................. 1

* P/N 107417 sold by the foot (Items 18-21)

29

REPLACEMENT PARTS

U-H1/U-HB PLUMBING

Fig. 11 Part Part Description Qty.
Item No. No.

30

REPLACEMENT PARTS

Figure 12 - U-H1/U-HB Fill Solenoid Valve and Piping

10

9

8

5

6

7

4

3

2

1

Prior to S/N 86149

Beginning with S/N 86149 and above

32

31

30

29

27

26

25

20

22

24

2321

19

18

17

16

13

12

11

15

14

17

28

19

Solenoid Valve Detail

21

22

23

24

1 107065 Connector, male (1/4 OD x 1/4 NPT)........................................ 1

2 100123 Cock, gauge (1/4”) ..................................................................... 1

3 110915 Hose, fill (6 ft.)........................................................................... 1

4 109689 Adapter, tee ................................................................................ 1

5 204348 Valve, solenoid ........................................................................... 1

6 108010 Coil, solenoid valve (240V)....................................................... 1

7 109386 Diaphragm, solenoid valve (not shown) .................................... 1

8 108713 Manifold (1/2”) .......................................................................... 1

9 109034 Washer, fiber (13/16 x 1 1/16) ................................................... 1

10 108418 Plug (1/2”).................................................................................. 1

11 105254 Bolt (10-32 x 1/2 Hex Hd)......................................................... 2

12 106486 Washer, lock (#10 split) ............................................................. 2

13 107033 Washer (.208 x .437 x .047)....................................................... 2

14 317872 Bracket ....................................................................................... 1

15 102504 Plug (1/2” brass)......................................................................... 1

16 102516 Tee (3/8 x 1/2 x 1/2 brass) ......................................................... 3

17 100998 Nipple, close (3/8” brass)........................................................... 2

18 102431 Elbow, street (3/8” 90° brass) .................................................... 1

19 107419 Barb, hose (1/2 x 1/2 NPT brass)............................................... 2

20 111714 Valve, solenoid (240V coil) ....................................................... 1

21 0502806 Coil, solenoid valve (240V) ....................................................... 1

22 0502811 Kit, diaphragm (See valve detail) .............................................. 1

23 111733 Flow washer (See valve detail) .................................................. 1

24 0502803 Strainer, line (See valve detail) .................................................. 1

25 107065 Connector, male (1/4 OD x 1/4 NPT)........................................ 1

26 100123 Cock, gauge (1/4”) ..................................................................... 1

27 102401 Bushing, reducer (3/8 x 1/4 Hex brass) ..................................... 1

28 102515 Tee (1/2 x 3/8 x 3/8 brass) ......................................................... 1

29 105994 Clamp, hose................................................................................ 1

30 107414 Tubing, high density................................................................... 2 ft.

31 111100 Elbow, female (1/4 OD x 1/8 NPT) ........................................... 1

32 111715 Hose, fill (1/2”) .......................................................................... 1

— 900742 Kit, fill piping assy (U-HB only)

(includes items 14-20, 25-29, 32)

U-H1/U-HB

FILL SOLENOID VALVE AND PIPING

Fig. 12 Part Part Description Qty.
Item No. No.

31

REPLACEMENT PARTS

32

REPLACEMENT PARTS

Figure 13 - U-LD Plumbing

21

22

1

2

3

4

5

6

7

8

3

9

10

11

12

2

13

14

15

16

17

18

19

20

16

28

27

26

25

24

23

Model U-LD

Located Inside Wash Tank

1 109463 Tee, lower wash arm .................................................................. 1

2 105993 Clamp, hose................................................................................ 2

3 109466 O-ring, wash arm tee.................................................................. 3

4 106153 Nozzle......................................................................................... 1

5 109034 Washer, fiber (13/16 x 1/16) ...................................................... 1

6 110210 Hose, wash ................................................................................. 1

7 100736 Bolt (1/4-20 x 3/4 Hex Hd)....................................................... 4

8 110881 Washer, sealing (Not shown) ..................................................... 4

9 109459 Tee, upper wash arm .................................................................. 1

10 100141 Nut, grip (1/4-20 SST) ............................................................... 4

11 110215 Screw, special ............................................................................. 1

12 104889 Compound 440 (Grey putty)...................................................... 1 ft.

13 100500 Breaker, vacuum (1/2”) .............................................................. 1

14 108349 Kit, repair vacuum breaker (Not shown) ................................... 1

15 107419 Barb, hose (1/2 x 1/2 NPT Brass).............................................. 1

16 111750 Clamp, hose................................................................................ 2

17 310198 Bracket, vacuum breaker............................................................ 1

18 601066 Piping ......................................................................................... 1

19 108417 Nut (1/2”) ................................................................................... 1

*20 107417 48” hose (1/2” OD) .................................................................... 1

21 100111 Bolt (5/16-18 x 5/8 Hex Hd)...................................................... 1

22 104889 Compound 440 (Grey putty)...................................................... 1

23 109468 Arm Support, lower wash .......................................................... 1

24 110440 Bolt (25mm Hex Hd) ................................................................. 4

25 110214 Dull Nut (M6) ............................................................................ 4

26 109460 O-ring, lower wash arm ............................................................. 1

27 109466 O-ring, lower wash arm ............................................................. 1

28 109467 O-ring, lower wash arm ............................................................. 1

* P/N 107417 sold by the foot (Item 20)

33

REPLACEMENT PARTS

U-LD PLUMBING

Fig. 13 Part Part Description Qty.
Item No. No.

34

REPLACEMENT PARTS

Figure 14 - U-LD Fill Solenoid Valve and Piping

Prior to S/N 86149

Beginning with S/N 86149 and above

7

6

5

2 3 4

1

23

22

11

21

171918

20

16

15

14

10

9

8

13

12

11

15

Solenoid Valve Detail

18

19

20

35

REPLACEMENT PARTS

1 110915 Hose, fill (1/2”) .......................................................................... 1

2 204347 Valve, solenoid (120V) ............................................................. 1

3 108877 Coil, solenoid valve (120V)....................................................... 1

4 109386 Diaphragm, solenoid valve (Not shown) ................................... 1

5 108713 Manifold (1/2”) .......................................................................... 1

6 109034 Washer, fiber (13/16 x 1/16) ...................................................... 1

7 108418 Plug (1/2”).................................................................................. 1

8 105254 Bolt (10-32 x 1/2 Hex Hd)......................................................... 2

9 106486 Washer, lock (#10 split) ............................................................. 2

10 107033 Washer (.208 x .437 x .047)....................................................... 2

11 107419 Barb, hose (1/2 x 1/2 NPT Brass).............................................. 2

12 317872 Bracket, solenoid valve .............................................................. 1

13 102504 Plug (1/2” Brass)........................................................................ 1

14 102516 Tee (3/8 x 1/2 x 1/2 Brass)......................................................... 1

15 100998 Nipple, close (3/8”) .................................................................... 1

16 102431 Elbow, street (3/8” 90° Brass).................................................... 1

17 111734 Valve, solenoid (120V)............................................................... 1

— Note: U-LD solenoid valve does not have a flow washer

18 0505235 Coil, solenoid valve (120V) ....................................................... 1

19 0502811 Kit, diaphragm, (See valve detail) ............................................. 1

20 0502803 Strainer, line (See valve detail) .................................................. 1

21 102414 Coupling, reducer (1/2 x 3/8 Brass)........................................... 1

22 105994 Clamp, hose................................................................................ 1

23 111715 Hose, fill (1/2”) .......................................................................... 1

U-LD PLUMBING

Fig. 14 Part Part Description Qty.
Item No. No.

36

REPLACEMENT PARTS

Figure 15 - U-LD Chemical Dispensing System

1

2

3

4

11

6

6

6

7

7

7

89

10

4 3

2

5

13

13

12

14

20

16

17

16

15

16

1716

18

19

1 203194 Union, bulkhead ......................................................................... 3

2 107928 Tubing, natural - tank to pump (Sanitizer) ................................ 6 ft.

3 107930 Tubing, blue - tank to pump (Rinse aid).................................... 6 ft.

4 107929 Tubing, red - tank to pump (Detergent) ..................................... 6 ft.

5 305248 Plate, dispenser holding ............................................................. 1

6 108411 Clamp, hose (SNP-2) ................................................................. 6

7 107050 Grommet (1 3/8 x 3/4) ............................................................... 3

8 107033 Washer (.208 x .437 x .047)....................................................... 2

9 106486 Washer, lock (#10 split) ............................................................. 2

10 105254 Bolt (10-32 x 1/2 Hex Hd)......................................................... 6

11 405853 Kit, Chemical dispensing (Incls. 5-7) ........................................ 1

12 108194 Tube (3/16 ID x 3/8 OD) ........................................................... 3

13 109829 Pump, peristalic (Includes item #12) ......................................... 3

14 108299 Motor, reducer (35 RPM 120V)................................................. 3

15 107931 Tubing, pick-up (1/4 x 18)......................................................... 3

16 108412 Clamp, hose (SNP-6) ................................................................. 7

17 107935 Tube (5/8 ID x 15/16 OD) ......................................................... 2

18 107929 Tubing, red - pump to supply (Detergent) ................................. 6 ft.

19 107930 Tubing, blue - pump to supply (Rinse aid)................................ 6 ft.

20 107928 Tubing, natural - pump to supply (Sanitizer)............................. 6 ft.

– 107938 Kit, Chemical dispensing (Includes 12 – 14)

37

REPLACEMENT PARTS

U-LD

CHEMICAL DISPENSING SYSTEM

Fig. 15 Part Part Description Qty.
Item No. No.

38

REPLACEMENT PARTS

Figure 16 - U-H1/U-HB Float Switch, Sump, Pump Hoses

1

4

2

3

U-H1/U-HB Float Switch
Beginning with S/N 84299
and above

13

14

15

16

10

11

9

8

7

6

5

12

17

18

17

20

17

19

1 111443 Float switch assembly ................................................................ 1

2 205138 Washer ........................................................................................ 1

3 104584 Nut, plain (1/2-13 Hex SST)...................................................... 1

4 104889 Compound 440 (Grey putty)...................................................... 1 ft.

5 109284 Tailpiece, elbow (Drain connection) .......................................... 1

6 107867 Nut, outlet pipe........................................................................... 1

7 107866 Washer, packing ......................................................................... 1

8 110739 Sump (Beginning with S/N 79001 and above).......................... 1

8 110219 Sump, with air trap (Beginning with S/N 76701 thru 79000) ... 1

9 109465 O-ring ......................................................................................... 1

10 110440 Bolt (25mm Hex Hd) ................................................................. 8

11 110881 Washer, sealing........................................................................... 8

12 110214 Dull Nut (M6) ............................................................................ 8

13 110218 Tube, drain-overflow.................................................................. 1

14 110427 Seal, drain-overflow tube ........................................................... 1

15 109462 Filter, sump................................................................................. 1

16 109464 Strainer, pump ............................................................................ 1

17 107340 Clamp, hose................................................................................ 4

18 110209 Hose, pump discharge ................................................................ 1

19 110211 Hose, pump intake...................................................................... 1

20 107424 Plug (1/8”).................................................................................. 1

REPLACEMENT PARTS

39

U-H1/U-HB

FLOAT SWITCH, SUMP, PUMP HOSES

Fig. 16 Part Part Description Qty.
Item No. No.

40

REPLACEMENT PARTS

Figure 17 - U-LD Sump, Pump Hoses, Drain Assembly

1

2

3

6

7

5

4

8

10

9

14

13

10

12

11

10

30

29

27 28

24

25

24

23

15

20

21

15

15

16

17

18

19

22

16

17

18

19

15

26

1 313545 Overflow cover........................................................................... 1

2 109462 Filter, sump................................................................................. 1

3 316797 Plate, strainer.............................................................................. 1

4 109461 Sump........................................................................................... 1

5 109465 O-ring ......................................................................................... 1

6 110440 Bolt (25mm Hex Hd) ................................................................. 8

7 110881 Washer, sealing........................................................................... 8

8 110214 Dull Nut (M6) ............................................................................ 8

9 110211 Hose, pump intake...................................................................... 1

10 107340 Clamp, hose................................................................................ 6

11 110699 Hose, upper discharge ................................................................ 1

12 312167 Drain tee, wash........................................................................... 1

13 110698 Hose, lower discharge ................................................................ 1

14 107424 Plug (1/8”).................................................................................. 1

15 105994 Clamp, hose................................................................................ 4

*16 110067 10” tubing (3/4 ID x 1 1/16 OD) ............................................... 2

17 106486 Washer, lock (#10 split) ............................................................. 3

18 107033 Washer (.208 x .437 x .047)....................................................... 3

19 108441 Nut (M5 Hex Hd)....................................................................... 3

20 111522 Valve, drain (120V).................................................................... 1

21 405265 Kit, drain valve (Incls. 12, 15, 16, 22)....................................... 1

22 317020 Bracket, support ......................................................................... 1

23 312166 Drain tee ..................................................................................... 1

24 107340 Clamp, hose................................................................................ 2

25 110264 Hose, overflow drain .................................................................. 1

26 107886 Gasket......................................................................................... 1

27 107420 Nut, plain (M6 SST) .................................................................. 4

28 106482 Washer, lock (1/4 split) .............................................................. 4

29 108051 Flange, elbow ............................................................................. 1

30 110440 Bolt (25mm Hex Hd) ................................................................. 4

* P/N 110067 sold by the foot (Item 16)

41

REPLACEMENT PARTS

U-LD

SUMP, PUMP HOSES, DRAIN ASSY

Fig. 17 Part Part Description Qty.
Item No. No.

42

REPLACEMENT PARTS

Figure 18 - U-H1/U-HB Wash Arm Assembly

5

6

2

6

2

1

3

4

3

A

21

22

3

2

3

7

8

7

3

9

3

9

3

15

11

6

6

11

10

B

6

6

11

12

17

7

6

18

19

7

7

20

2

3

4

1

6

5

2

7

6

6

11

13

6

6

11

14

A

C

15

11

9

3

9

3

7

16

6

1 107329 Plug, rinse arm ........................................................................... 2

2 108016 O-ring ......................................................................................... 9

3 107337 Nut, plain (M4) .......................................................................... 27

4 107330 Nozzle, bottom rinse .................................................................. 5

5 108730 Nozzle, top rinse ........................................................................ 5

6 107336 Screw (M4 x 12mm Pan Hd) ..................................................... 19

7 109491 Screw (M4 x 25mm) .................................................................. 8

8 109834 Cap, rinse center......................................................................... 1

9 107332 Nozzle, bottom wash.................................................................. 7

10 107335 Nozzle, top wash (RH)............................................................... 1

11 108021 O-ring ......................................................................................... 9

12 108364 Nozzle, top wash (RH)............................................................... 2

13 108365 Nozzle, top wash (LH)............................................................... 3

14 107334 Nozzle, top wash (LH)............................................................... 1

15 107328 Plug, wash arm........................................................................... 2

16 109488 Nozzle, wash arm....................................................................... 1

17 109489 Nozzle, wash arm....................................................................... 1

18 109836 Bracket, retaining screw............................................................. 1

19 109837 Screw, retaining.......................................................................... 2

20 109833 Nozzle, rinse center.................................................................... 1

21 110395 Bearing, lower plastic hub (long)............................................... 1

22 110394 Bearing, upper plastic hub (short).............................................. 1

— 404808 Wash arm assembly (Incls 1-22)................................................ 2

A ——- Rinse nozzle (Items 2-6) (assembled for reference)

B ——- Wash nozzle (RH) (Items 3,6,9,11,12) (assembled for reference)
C ——- Wash nozzle (LH) (Items 3,6,9,11,13) (assembled for reference)

43

REPLACEMENT PARTS

U-H1/U-HB

WASH ARM ASSEMBLY

(Quantities listed per one wash arm assembly)

Fig. 18 Part Part Description Qty.
Item No. No.

44

REPLACEMENT PARTS

Figure 19 - U-LD Wash Arm Assembly

9

1

2

3

2

3

4

5

3

6 7

8

3

2

3

2

3

9

1

10 9

10

11

10

9

10

12

A

13

6

6

14

B

10

9

10

15

10

9

10

16

1 107328 Plug, wash arm........................................................................... 2

2 107332 Nozzle, bottom wash.................................................................. 7

3 107337 Nut, plain (M4) .......................................................................... 18

4 110395 Bearing, lower plastic hub (long)............................................... 1

5 110394 Bearing, upper plastic hub (short).............................................. 1

6 109491 Screw (M4 x 25mm Pan Hd) ..................................................... 6

7 109836 Bracket , retaining screw............................................................ 1

8 109837 Screw, retaining.......................................................................... 1

9 108021 O-ring ......................................................................................... 9

10 107336 Screw (M4 x 12mm Pan Hd) ..................................................... 14

11 107335 Nozzle, top wash (RH)............................................................... 1

12 108364 Nozzle, top wash (RH)............................................................... 2

13 109489 Nozzle, wash arm....................................................................... 1

14 109488 Nozzle, wash arm....................................................................... 1

15 108365 Nozzle, top wash (LH)............................................................... 3

16 107334 Nozzle, top wash (LH)............................................................... 1

— 404804 Wash, arm assembly (Incls items 1-16) ..................................... 2

A ——- Wash nozzle (Items 3,9,10,12)(assembled for reference)

B ——- Wash nozzle (Items 3,9,10,15)(assembled for reference)

45

REPLACEMENT PARTS

U-LD

WASH ARM ASSEMBLY

(Quantities listed per one wash arm assembly)

Fig. 19 Part Part Description Qty.
Item No. No.

46

REPLACEMENT PARTS

Figure 20 - Pump/Motor Assembly

2

1

Flange not a separate
Replacement Part.
Comes with Item 3 or 4 only

12

11

9

10

8

7

6

5

4

3

13

14

U-LD

U-H1

U-HB

Model U-LD Model U-H1/U-HB

1 109445 Capacitor (12.5 mfd) (U-H1/U-HB) .......................................... 1

2 109446 Capacitor (40 mfd) (U-LD)........................................................ 1

3 110417 Pump/motor 3/4 HP (220V/60/1) (U-H1/U-HB)....................... 1

4 110416 Pump/motor 3/4 HP (115V/60/1) (U-LD) ................................. 1

5 110285 Gasket......................................................................................... 1

6 108002 Seal assembly ............................................................................. 1

7 111737 Spacer ......................................................................................... 1

8 ——- See Item 13 or 14 below ............................................................ —

9 107971 Screw (8-32 x 1-1/4 Pan Hd) ..................................................... 10

10 107965 Nut, grip (8-32 with nylon insert).............................................. 10

11 110284 Volute, pump .............................................................................. 1

12 107424 Plug (1/8”).................................................................................. 1

13 108003 Impeller (U-H1/U-HB) (Closed face)........................................ 1

14 109434 Impeller (U-LD) (Open faced)................................................... 1

— 900164 Kit, pump service, (U-H1/U-HB) (Incls. Items 5, 6, 11, 13)
— 900163 Kit, Pump service, (U-LD) (Incls. Items 5, 6, 11, 14)

47

REPLACEMENT PARTS

PUMP/MOTOR ASSEMBLY

Fig. 20 Part Part Description Qty.
Item No. No.

48

REPLACEMENT PARTS

Figure 21 - U-H1/U-HB Control Cabinet

9

8

22

7

6

5

4

3

23

24

25

26

27

13

10

9

11

12

13

14

15

11

16

17

18

19

20

21

8

7

6

5

4

3

1 2

1 110274 Decal, faceplate (U-HB, U-H1) ................................................. 1

2 110271 Decal, faceplate (U-LD)............................................................. 1

3 107365 Pilot, light (240V(Green) ........................................................... 1

4 111614 Pushbutton (Green) .................................................................... 1

5 111617 Contact block (NO).................................................................... 1

6 900725 Kit, pushbutton (Incls items 4, 5) .............................................. 1

7 101135 Pilot, light (240V)(Red) ............................................................. 1

8 107355 Switch, toggle (DPST on/off) .................................................... 1

9 100097 Screw (10-32 x 1/2 Truss Hd).................................................... 2

10 111238 Transformer (240V:24V)............................................................ 1

11 100095 Screw (10-32 x .375 Round Hd)................................................ 14

12 111067 Relay (24V)................................................................................ 2

13 104883 Screw (6-32 x 3/8 Round Hd).................................................... 12

14 111467 Timer, fill.................................................................................... 1

15 110302 Timer, cycle (90 sec.) ................................................................. 1

16 107370 Contactor, motor (208-240V coil).............................................. 1

17 311527 Stop, control cabinet .................................................................. 1

18 100073 Screw (1/4 x 20 x 1/2 Truss Hd)................................................ 1

19 106963 Block, terminal (H-2)................................................................. 1

20 103309 Lug, wire .................................................................................... 1

21 106402 Block, fuse (30A, 2 pole, 600V)................................................ 1

22 107384 Fuse, TRM-20A (250V, time delay) .......................................... 2

23 107370 Contactor (40° rise booster)(U-HB only) .................................. 1

*24 111703 Contactor (70° rise booster)(U-HB only) .................................. 1

*25 111072 Contactor (70° rise booster)(U-HB only) .................................. 1

26 111069 Relay (240V).............................................................................. 1

27 107366 Board, terminal........................................................................... 1

Special Notes:

*Beginning with S/N 86149 and above,
70° rise booster contactor is located inside slide out control cabinet.

**Prior to S/N 86149 70° rise booster contactor
located in stainless steel enclosure on the rear center of machine base.

49

REPLACEMENT PARTS

U-H1/U-HB CONTROL CABINET

Fig. 21 Part Part Description Qty.
Item No. No.

*

50

REPLACEMENT PARTS

Figure 22 - U-LD Control Cabinet

1

9

8

7

6

5

4

3

10

2

1

2

222120

19

3

4

6

5

7

8

9

18

11

17

16

15

14

13

12

11

1 100097 Screw (10-32 x 1/2 Truss Hd).................................................... 2

2 107150 Switch, toggle (On/Mom On, DPDT)........................................ 5

3 106995 Circuit breaker (5 amp).............................................................. 1

4 106364 Pilot light (120V)(Green)........................................................... 1

5 111614 Pushbutton (Green) .................................................................... 1

6 111617 Contact block (NO).................................................................... 1

7 900725 Kit, pushbutton (Incls items 5-6) ............................................... 1

8 101128 Pilot light (120V)(Red) .............................................................. 1

9 107351 Switch, toggle (On/None/On DPDT)......................................... 1

10 110271 Decal, faceplate (U-LD)............................................................. 1

11 100095 Screw (10-32 x .375 Round Hd)................................................ 11

12 311346 Bracket, timer............................................................................. 1

13 109604 Timer (115V).............................................................................. 1

14 107369 Contactor (25 FLA, 2 pole, 120V coil)...................................... 1

15 311527 Stop, control cabinet .................................................................. 1

16 100073 Screw (1/4-20 x 1/2 Truss Hd)................................................... 1

17 106963 Block, terminal (H-2)................................................................. 1

18 103309 Lug, wire .................................................................................... 1

19 111277 Transformer (120V:24V)............................................................ 1

20 111068 Relay (120V).............................................................................. 1

21 111067 Relay (24V)................................................................................ 1

22 104883 Screw (6-32 x 3/8 Round Hd).................................................... 4

51

REPLACEMENT PARTS

U-LD CONTROL CABINET

Fig. 22 Part Part Description Qty.
Item No. No.

REPLACEMENT PARTS

52

Figure 23 - U-H1/U-HB Thermostats, Booster Assembly, Wash Tank Element

1

2

3

4

5

(U-HB Only)

17

18

19

20

21

22

23

24

25

26

10

9

Hose Not Shown

68

Hose Not Shown

78

9

10

12

13

11

14

15

16

29

28 27

Beginning with S/N 87075 and above

1 109069 Thermostat, Wash tank (S/N 79001 thru 87723).......................... 1

1 112204 Thermostat, Wash tank (S/N 87724 thru 89896).......................... 1

Replace with P/N 109069

1 109069 Thermostat, Wash tank (S/N 89897 and above)........................... 1

2 109069 Thermostat, Booster tank, U-HB only (S/N 79001 thru 87723)... 1

2 112204 Thermostat, Booster tank, U-HB only (S/N 87724 thru 89896) ... 1

Replace with P/N 109069

2 109069 Thermostat, Booster tank, U-HB only (S/N 89897 and above) ... 1

3 110561 Thermostat, high limit (Wash tank).............................................. 1

4 201029 Locknut, 1/2” (For items 1,2,3) .................................................... 3

5 104889 Compound 440 (Grey putty)......................................................... 1ft.

6 107417 24” hose (1/2” ID)(Booster to vacuum breaker) .......................... 1

7 107417 12” hose (1/2” ID)(Booster to manifold)...................................... 1

8 111750 Clamp, hose (Not shown) ............................................................. 2

9 108528 Barb, hose (1/2 x 1/2 NPT 90° Brass) .......................................... 2

10 102392 Bushing, reducing (3/4 x 1/2 Brass) ............................................. 2

11 108954 Nut, grip (6/32 w/nylon insert) ..................................................... 2

12 110562 Thermostat, fixed (Snap) .............................................................. 1

13 110563 Compound, heat sink .................................................................... 1

14 109985 O-ring ............................................................................................ 1

15 107909 Heater, booster tank (40° rise booster) ......................................... 1

16 111334 Heater, booster tank (70° rise booster) ......................................... 1

17 107908 Cover, heater ................................................................................. 1

18 107967 Nut, grip (1/4-20 w/nylon insert).................................................. 3

19 100003 Nut, plain (1/4-20 SST) ................................................................ 3

20 106482 Washer, lock (1/4 Split) ................................................................ 3

21 100210 Plug (1/8” SST)............................................................................. 1

22 0508779 Tank, booster (Beginning with S/N 76701 thru S/N 87074)........ 1

22 0509042 Tank, booster (Beginning with S/N 87075 & above)................... 1

23 106026 Washer (1/4 x 5/8 x 1/16 SST) ..................................................... 2

24 107033 Washer (.208 x .437 x .047).......................................................... 2

25 106486 Washer, lock (#10 Split) ............................................................... 2

26 111478 Bolt (10-32 x 1/2 Hex w/loctite) .................................................. 2

27 110216 Heater, wash tank.......................................................................... 1

28 104882 Washer (1/2 x 1 1/16 x 1/16) ........................................................ 2

29 104889 Compound 440 (Grey putty)......................................................... 1ft.

53

REPLACEMENT PARTS

U-H1/U-HB

THERMOSTATS, BOOSTER ASSEMBLY, WASH TANK ELEMENT

Fig. 23 Part Part Description Qty.
Item No. No.

54

REPLACEMENT PARTS

Figure 24 - U-H1/U-HB/U-LD Drain Lift Kits (Optional)

U-H1/U-HB Only

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

7

26

25

Located Inside Drain Lift Tank

Item 14 Above

27

2829

30

U-LD Only

31

1 403898 Kit, pumped drain lift (Complete)(U-H1/U-HB only)............... 1

2 309673 Cover, cabinet............................................................................. 1

3 110067 Tubing (3/4 ID x 1 1/16 OD)..................................................... 5 ft.

4 107777 Connector (1/2” Romex)(Not shown)........................................ 1

5 106068 Cord (SJ 16-3)............................................................................ 10 ft.

6 309671 Cabinet ....................................................................................... 1

7 100097 Screw (10-32 x 1/2 Truss Hd).................................................... 4

8 103309 Lug, wire .................................................................................... 1

9 104709 Relay (120V).............................................................................. 1

10 106481 Nut, acorn (10-32)...................................................................... 1

11 107368 Coupling, chain (#10) ................................................................ 1

12 107367 Chain, bead (#10)....................................................................... 2 ft.

13 309674 Cover, tank ................................................................................. 1

14 309677 Tank ............................................................................................ 1

15 108418 Plug (1/2”).................................................................................. 1

16 108417 Nut (1/2”) ................................................................................... 1

17 109034 Washer, fiber (13/16 x 1 1/16) ................................................... 1

18 109284 Tailpiece, elbow.......................................................................... 1

19 107867 Nut, outlet pipe........................................................................... 1

20 107866 Washer, packing ......................................................................... 1

21 107863 Outlet, pipe................................................................................. 1

22 107864 Washer, packing ......................................................................... 1

23 107865 Locknut....................................................................................... 1

24 106464 Plug, yellow................................................................................ 1

25 105993 Clamp, hose................................................................................ 1

26 110065 Pump, centrifugal (115V) .......................................................... 1

27 111116 Float switch, dual ....................................................................... 1

28 104882 Washer (1/2 x 1 1/16 x 1/16) ..................................................... 1

29 107089 Nut, jam (1/2-13)........................................................................ 1

30 104889 Compound 440 (Grey putty)...................................................... 1 ft.

31 403801 Kit, drain lift (U-LD only) ......................................................... 1

55

REPLACEMENT PARTS

U-H1/U-HB/U-LD

DRAIN LIFT KITS

(Optional)

Fig. 24 Part Part Description Qty.
Item No. No.

56

REPLACEMENT PARTS

Figure 25 - Dishracks, Strainer, PRV

1

2

3

4

1 101273 Rack, silverware (Flat bottom)................................................... A/R

2 101285 Rack, dish (Peg) ......................................................................... A/R

3 110768 Strainer, line (3/4” Brass) (Optional)......................................... 1

4 107550 Valve, pressure regulating (3/4”) (Optional).............................. 1

57

REPLACEMENT PARTS

U-H1/U-HB/U-LD

Dishracks, Strainer, PRV

Fig. 25 Part Part Description Qty.
Item No. No.

58

ELECTRICAL SCHEMATICS

Figure 26 - U-H1/U-HB Electrical Schematic

BHTR

22

LINE V

18 20

DSS

18 19

18

3

34

2CR

37

3CR

3

37

10

HWCO

4

4

4

4

4

19

17

TRC

NO

FTRA

NC

24V

PB

1CR

NO

35

NC

36

2CR

12 36

WTS

10

U-H1/U-HB

UHB ONLY

23 24

2CR

17

3CR

3

5

NC

TRB

NO

1CR

14

NO

NC

5

5

7

8

HLTS

21

22

20

20

3

3

MAINTAINED

DISPENSER SIGNAL

TRA

6

SANI SIGNAL

36

WHTR 1.5KW

11

HC1

PL

1CR

CL

TR

1M

DET. SIG.

RINSE AID/

RV

FTR

TO CUSTOMERS DISCONNECT SWITCH

PSW

3

23

2

1CR

2

2

2

2

2

2

2

2

2

2

2CR

3CR

1M
1MTR

BHTR

BTS
CL

DSS
FTR

FTRA

FU-
GND

HC1

HLTS

HWCO
MW

PB

PL
PSW

RV

TR
TRA,B,C

WTS

L1 L2

GND

FU2FU1

1M

23

RED

WHITE

BLACK

HOLD-IN RELAY/TANK PREHEAT

DOOR SAFETY SWITCH RELAY

FLOAT SWITCH RELAY

MOTOR CONTACT
PUMP MOTOR

BOOSTER HEATER

BOOSTER THERMOSTAT
CYCLE LIGHT

DOOR SAFETY SWITCH
FILL TIMER MOTOR

FILL TIMER CAM SWITCH

FUSE
GROUND

BOOSTER HEAT CONTACT

HIGH LIMIT THERMOSTAT

HIGH WATER CUT-OFF FLOAT
MANUAL WASH SWITCH

PUSHBUTTON START SWITCH

POWER LIGHT
POWER SWITCH

RINSE VALVE

TIMER MOTOR
TIMER CAM SWITCH

WASH THERMOSTAT

NO, NC POSITIONS ARE

REVERSED FROM WHAT IS SHOWN

ON MACHINES WITH

ADJUSTABLE TIMER CAMS

See Page 60

for U-H1/U-HB Timer Chart

1MTR

BTS

HLTS

15

1310

HC1

2

(UHB ONLY)

C752517B

59

ELECTRICAL SCHEMATICS

U-LD

Figure 27 - U-LD Electrical Schematic

TO CUSTOMERS DISCONNECT SWITCH

PSW

3

LINE V

22 24

DSS

22

3

2CR

3

3

3

PB

6

1CR

6

6

6

24V

23

4

4

4

4

4

4

4

4

4

23 21

23 24

2CR

3

NO

TRA

5

NC

4

4

SWB

6

4

6

NC

NO

NC

NO

NC

NO

NC

NO

NC

NO

10

TRB

6

12

TRC

30

TRD

3 17 2

32

TRE

3 15 2

31

TRF

8

116

SWC

13

COUNTER

SWD

14

SWE

SWF

PL

1CR

CL

TM

1M

DV

FV

DP

RAP

SP

23

2

2

2

2

2

2

2

2

(IF USED)

233

(115 VOLT)

L1 N

GND

CB

1

1CR
2CR
1M

1MTR

BHTR
BTS
CB CIRCUIT BREAKER

CL
DP DETERGENT PUMP

DSS
DV

FV FILL VALVE
GND

PB

PL
PSW
RAP RINSE AID PUMP

SP SANITIZATION PUMP
SWB DRAIN SWITCH

SWC FILL SWITCH
SWD DETERGENT SWITCH
SWE RINSE AID SWITCH

1M

20

HOLD-IN RELAY/TANK PREHEAT
DOOR SAFETY SWITCH RELAY
MOTOR CONTACT

PUMP MOTOR

BOOSTER HEATER
BOOSTER THERMOSTAT

CYCLE LIGHT

DOOR SAFETY SWITCH
DRAIN VALVE

GROUND

PUSHBUTTON START SWITCH

POWER LIGHT
POWER SWITCH

SWF SANITIZER SWITCH

TIMER MOTOR

TM
TRA CYCLE TIMER CAM SWITCH

TRB DRAIN TIMER CAM SWITCH
TRC FILL TIMER CAM SWITCH
TRD DETERGENT TIMER CAM SWITCH

TRE RINSE AID TIMER CAM SWITCH

TRF SANITIZER TIMER CAM SWITCH

See Page 60

for U-LD Timer Chart

RED

WHITE

BLACK

1MTR

C700918A

U-H1/U-HB

Timer Chart

U-LD

Timer Chart

60

TIMER CHARTS

CAM
CYCLE
CAM

WASH
CAM

RINSE
CAM

SECOND

SECOND

NO

TRA

NC

NO

TRB

NC

NO

TRC

NC

TRDNCNO

TRE

NO
NC

TRF

NO
NC

01052015 25 3530 40 5045 55 60

6

TIMER CYCLE 90 SEC.

7065 8075 85 90

NOTRA
NC

WASH 67 SEC.

DWELL 2 SEC.

RINSE 21 SEC.

67

69

69

TRB

7

NO
NC

NOTRC
NC

0105152025530 35 40 45 50 55 60 65 70 75 80 85 90 95 100 110 120 130 140105 115 125 135 145 150

TIMER CYCLE 150 SEC.

310

DETERGENT 7 SEC.

WASH 62 SEC.

60

DRAIN 40 SEC.

82 116

FILL 34 SEC.

100

101

101

RINSE 32 SEC.

104

RINSE AID 3 SEC.

106

SANITIZER 5 SEC.