Champion UH-100 Service Manual

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Page 1

For machines beginning with Serial no. U-1352

Technical Manual

Champion

Model UH-200B Shown

Undercounter Dishwasher

Model

UH-200B

UH-200

UH-100B

UH-100

UL-100

High Temperature with Built-in Booster Fresh Water Final Rinse

High Temperature Fresh Water Final Rinse

High Temperature with Built-in Booster Pumped Fresh Water Final Rinse

High Temperature Pumped Fresh Water Final Rinse

Low Temperature Chemical Sanitizing Rinse

Machine Serial No.

June, 2001

P. O. Box 4149 Winston-Salem, North Carolina 27115-4149 336/661-1556 Fax: 336/661-1660

Champion Industries, Inc.

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Champion Manual P/N 112653 REV. C

2674 N. Service Road Jordan Station, Ontario, Canada L0R 1S0 905/562-4195 Fax: 905/562-4618

Page 2

Complete the information below for quick reference.

Model Number Serial Number

Voltage and Phase

Champion Parts Supplier Phone

Champion Service Agency Phone

Champion (USA) National Service Department

Phone: 1(336) 661-1556

1(800) 858-4477

Fax: 1(336) 661-1660

Champion (Canada) National Service Department

Phone: 1(905) 562-4195

1(800) 263-5798

Fax: 1(905) 562-4618

Note: When calling to order parts, be sure to have the model number, serial number,

voltage and phase of your machine.

Champion

Machine Data Plate with model & serial number

Machine

located on the front of the lower panel.

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REVISION RECORD

Revision Revised Serial Number Comments

Date Pages Effectivity

2/25/99 All U-1352 First issue of manual and

replacement parts lists

10/25/99 7, 9, 10, ALL Increased size of supply

92, 93 line, line strainer, and PRV

from 1/2" to 3/4" I.D.

10/25/99 75, 99 ALL Corrected Thermistor

Resistance Chart

5/1/00 133 U-1991 Changed Models UH-200 &

UH-200B fill hose, valve to 3/4"

revised fill piping & bracket

5/1/01 142, 143 ALL Changed P/N 112621 to

900827 prior to S/N U1938, and

113292 after S/N U1938. Changed

P/N’s 112622 & 112623 to

900828 prior to S/N U1938 and

113293 after S/N U1938.

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REVISION RECORD

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SAFETY SUMMARY

Safety Symbols

• The following symbols appear throughout this manual alerting you to potential

hazards. Statements associated with each symbol are printed in italics.

WARNING:

Warning statements indicate any condition or practice that could result in personal injury or possible loss of life.

CAUTION:

Caution statements indicate any condition or practice which, if not strictly observed or remedied, could result in damage to or destruction of the dishwasher.

NOTE:

Note statements indicate any condition or practice which, if observed, will help in the safe completion of a task.

General Safety Rules

• The following general safety rules must be observed in addition to the specific cautions and warnings presented in this manual.

• Your Champion dishwasher uses hot water to clean and sanitize a variety of wares.

(Model UL-100 uses chemicals to sanitize wares.) Machine surfaces and wares become hot during and immediately following normal operations. Operators should use caution when loading and unloading wares from the machine.

• Operators must NOT bypass a safety interlock or control to operate the dishwasher.

• The service and maintenance instructions contained in this manual are intended for qualified service personnel. These instructions assume that you are trained in basic electricity and

mechanical theory. If you are not a trained technician, then do not attempt to adjust or repair the dishwasher as serious personal injury or damage to the dishwasher may result.

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iii

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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.

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TABLE OF CONTENTS

TABLE OF CONTENTS PAGE

Revision Record ........................................................................................................... i

Safety Summary ........................................................................................................... iii

Limited Warranty ......................................................................................................... iv

PART 1: GENERAL SPECIFICATIONS........................................................

1.1 About this Manual................................................................................................ 1

1.2 Model Numbers ................................................................................................... 2

1.3 Standard Equipment and Options ........................................................................ 3

1.4 Dimensions, Capacities, and Rough-in ................................................................ 4

PART 2: INSTALLATION ..............................................................................

2.1 Introduction .......................................................................................................... 7

2.2 Unpack the Dishwasher ....................................................................................... 7

2.3 Permanent Placement ........................................................................................... 8

2.4 Water Connections .............................................................................................. 8

2.4.1 Model UH-200B, UH-200 ......................................................................... 9

2.4.2 Model UH-100B, UH-100, UL-100........................................................... 10

2.5 Drain Connections (All models) .......................................................................... 11

2.6 Installation and Service Switch (Model UH-200B, UH-100B Only) .................. 12

2.7 Electrical Connections (Single Phase) ................................................................. 13

2.7.1 Model UH-200B, UH-100B....................................................................... 13

2.7.2 Model UH-200, UH-100, UL-100 ............................................................. 14

2.8 Electrical Connections (Three Phase) .................................................................. 15

2.8.1 Model UH-200B, UH-100B....................................................................... 15

2.9 Chemical Connections ......................................................................................... 16

2.9.1 General (All Models) ................................................................................. 16

2.9.2 Models UH-200B, UH-200 (Chemical Adjust and Prime) ........................ 19

2.9.3 Models UH-100B, UH-100 (Chemical Adjust and Prime) ........................ 20

2.9.4 Model UL-100 (Chemical Adjust and Prime)............................................ 21

2.10 Installing Optional Chemical Pumps ................................................................... 22

2.10.1 Model UH-200B, UH-200 ....................................................................... 22

2.10.2 Model UH-100B, UH-100 ....................................................................... 25

2.11 Initial Start-up (All Models) ................................................................................ 26

2.11.1 Model UH-200B, UH-200 ....................................................................... 27

2.11.2 Model UH-100B, UH-100, UL-100......................................................... 28

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TABLE OF CONTENTS

PART 3: DAILY OPERATION........................................................................

3.1 Introduction .......................................................................................................... 29

3.2 Preparing your Dishwasher (All Models) ............................................................ 29

3.3 Loading your Dishwasher (All Models) .............................................................. 30

3.4 Description of Operator Controls and Displays (All Models) ............................. 31

3.5 Basic Operation.................................................................................................... 34

3.5.1 Model UH-200B, UH-200 ......................................................................... 34

3.5.2 Model UH-100B, UH-100, UL-100........................................................... 36

PART 4: CLEANING and MAINTENANCE ..................................................

4.1 Introduction .......................................................................................................... 39

4.2 Daily Cleaning Schedules (All Models) .............................................................. 39

4.3 Deliming Schedules (All Models) ....................................................................... 40

4.3.1 Deliming Procedure (All Models) ............................................................. 40

4.4 Preventive Maintenance Schedules (All Models) ................................................ 41

4.5 Lubrication (All Models) ..................................................................................... 41

PART 5: OPERATOR TROUBLESHOOTING ...............................................

5.1 Introduction .......................................................................................................... 43

5.2 Troubleshooting Basics........................................................................................ 43

5.3 Using the Touchpad/Display to Evaluate Problems ............................................. 44

5.4 Reading Error Codes ............................................................................................ 45

5.5 Troubleshooting Guide ........................................................................................ 46

PART 6: SERVICE TROUBLESHOOTING ...................................................

6.1 Introduction .......................................................................................................... 51

6.2 Operation Sequence and Timing Charts .............................................................. 52

6.2.1 Model UH-200B, UH-200 ......................................................................... 52

6.2.2 Model UH-100B, UH-100 ......................................................................... 54

6.2.3 Model UL-100 ........................................................................................... 56

6.3 Error Codes .......................................................................................................... 58

6.4 Troubleshooting Guide ........................................................................................ 60

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TABLE OF CONTENTS

PART 7: SOLID STATE CIRCUIT BOARDS .................................................

7.1 Introduction ..................................................................................................... 61

7.2 Control Cabinet Layout and Board Function .................................................. 61

7.3 Replacement Circuit Board Set-up .................................................................. 62

7.3.1 Timer Control Board Program Jumper Settings .................................... 62

7.3.2 Timer Control Board LED Status Lights............................................... 63

7.3.3 Temperature/Pressure Control Board Program Jumper Settings ........... 64

7.3.4 Temperature/Pressure Control Board LED Status Lights ..................... 65

7.3.5 Time Select (Fill/Chemical Dispenser) Board....................................... 66

7.4 Circuit Board Connector Diagrams and Test Points ........................................ 70

7.4.1 Timer Control and Time Select (Fill/Chemical Dispenser) Board ....... 72

7.4.2 Temperature/Pressure Display Board ................................................... 74

7.4.3 Touchpad/Display ................................................................................. 76

7.5 Circuit Board Removal and Replacement ....................................................... 78

7.5.1 Timer Control Board Removal .............................................................. 78

7.5.2 Temperature/Pressure Display Board Removal ..................................... 80

7.5.3 Touchpad/Display Removal and Replacement ...................................... 82

7.5.4 Time Select (Fill/Chemical Dispenser) Board Removal ....................... 85

PART 8: COMPONENT REPAIR AND REPLACEMENT .............................

8.1 Introduction .......................................................................................................... 87

8.1.1 Special Tools and Materials................................................................ 87

8.1.2 Electrical Component Locator Diagram............................................. 88

8.1.3 Troubleshooting the 10-point Terminal Board ................................... 90

8.2 Components ......................................................................................................... 92

8.2.1 Pressure Reducing Valve, (PRV), Adjustment .................................... 92

Model UH-200B, UH-200

8.2.2 Water Line Strainer ............................................................................. 93

Model UH-200B, UH-200 Model UH-100B, UH-100, UL-100

8.2.3 Fill/Rinse Water Solenoid Valve ......................................................... 93

Model UH-200B, UH-200 Model UH-100B, UH-100, UL-100

8.2.4 Water Level Probe .............................................................................. 95

Model UH-200B, UH-200

8.2.5 Vacuum Breaker ................................................................................. 96

Model UH-200B, UH-200

8.2.6 Pressure Transducer ............................................................................ 97

Model UH-200B, UH-200

8.2.7 Thermistors (All Models) ................................................................... 99

8.2.8 Wash Tank Heater and High Limit Thermostat .................................. 100

(All models except UL-100)

8.2.9 Booster Tank Heater and High Limit Thermostat .............................. 101

Model UH-200B, UH-100B

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TABLE OF CONTENTS

PART 8: ..........................................................................................................

COMPONENT REPAIR AND REPLACEMENT (CONT.)

8.2 Components (Cont.)

8.2.10 Wash Pump/Motor (All Models) ........................................................................ 102

8.2.11 Drain Pump/Motor, Drain Valve (All Models) .................................................. 104

8.2.12 Wash Arm Bearings (All Models) ...................................................................... 105

8.2.13 Rinse Arm Bearings ............................................................................................ 106

Model UH-200B, UH-200

8.2.14 Door Shock and Hinge Assembly (All Models)................................................. 107

8.2.15 Door Safety Switch and Magnet (All Models) ................................................... 108

8.2.16 Circuit Breaker (All Models).............................................................................. 109

PART 9: REPLACEMENT PARTS ..........................................................

PART 10: ELECTRICAL SCHEMATICS ...................................................

A701543 UH-200B Single Phase

A701542 UH-200 Single Phase

A701545 UH-100B Single Phase

A701544 UH-100 Single Phase

A701546 UL-100 Single Phase

A701628 UH-200B Three Phase

A701627 UH-100B Three Phase

111

155

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TABLE OF CONTENTS

LIST OF FIGURES

Figure 2.4.1 – Water Connections ( UH-200B, UH-200) .............................................. 9

Figure 2.4.2 – Water Connections (UH-100B, UH-100, UL-100) ................................. 9

Figure 2.5.3 – Recommended Direct Drain Connections for All Models ...................... 11

Figure 2.6.1 – Installation and Service Switch (UH-200B, UH-100B Only) ................ 12

Figure 2.9.1 – Control Cabinet Retaining Screws .......................................................... 17

Figure 2.9.2 – Fill/Chemical Dispenser Circuit Board................................................... 18

Figure 2.9.3 – Chemical Bottle Placement ..................................................................... 18

Figure 2.9.4 – UH-200B, UH-200 Touchpad/Display ................................................... 19

Figure 2.9.5 – Rinse Aid Injection Point (UH-200B, UH-200) ..................................... 19

Figure 2.9.6 – UH-100B, UH-100 Touchpad/Display ................................................... 20

Figure 2.9.7 – Fill Chute (UH-100B, UH-100, UL-100) ............................................... 20

Figure 2.9.8 – UL-100 Touchpad/Display...................................................................... 21

Figure 2.9.9 – Fill Chute Discharge (UH-100B, UH-100, UL-100) .............................. 21

Figure 2.10.1 – UH-200B, UH-200 Chemical Pumps .................................................... 22

Figure 2.10.2 – Chemical Pump Connection Terminal Block ......................................... 22

Figure 2.10.3 – UH-100B, UH-100 Chemical Pumps ..................................................... 25

Figure 3.4.1 – Door Safety Magnet Location................................................................. 31

Figure 3.4.2 – Circuit Breaker Location ........................................................................ 31

Figure 5.3.1 – Self-Diagnostics Display ........................................................................ 44

Figure 5.3.2 – LO Temperature Displayed ..................................................................... 44

Figure 6.2.1 – Timing Chart (UH-200B, UH-200) ........................................................ 53

Figure 6.2.2 – Timing Chart (UH-100B, UH-100) ........................................................ 55

Figure 6.2.3 – Timing Chart (UL-100)........................................................................... 57

Figure 7.2.1 – Circuit Board Layout (All Models) ........................................................ 61

Figure 7.3.1 – Timer Control Board Jumpers and.......................................................... 62

LED Status Lights

Figure 7.3.2 – Temperature/Pressure Display Board Jumpers ....................................... 64

and LED Status Lights

Figure 7.3.3 – Time Select (Fill/Chemical Dispenser)................................................... 66

Board Potentiometers

Figure 7.3.4 – Rinse Aid and Sanitizer Pump Adjustment ............................................. 69

Figure 7.4.1 – Timer Control Board and Time Select Board ......................................... 72

Connector Diagrams

Figure 7.4.2 – Temperature/Display Board .................................................................... 74

Connector Diagrams

Figure 7.4.3 – Touchpad/Display Connector Diagram................................................... 76

Figure 8.1.1 – Electrical Component Locator Diagram ................................................. 88

Figure 8.1.2 – 10-Point Terminal Board ......................................................................... 90

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TABLE OF CONTENTS

Figure 9.1 – Upper Hood Assembly and Control Cabinet (All Models) ......................... 112

Figure 9.2 – Tank, Base, Guide Rails, and Panels (UH-200B, UH-200) ........................ 114

Figure 9.3 – Tank, Base, Guide Rails, and Panels (UH-100B, UH-100, UL-100).......... 116

Figure 9.4 – Door and Door Safety Switch Assembly (All Models)............................... 118

Figure 9.5 – Final Rinse Manifold Assembly (UH-200B, UH-200) ............................... 120

Figure 9.6 – Chemical Injection Points, Water Level Probe Assy. (UH-200B, UH-200. 122

and Fill Chute Assemby (UH-100B, UH-100, UL-100)

Figure 9.7 – Sump and Spray Piping Assembly (UH-200B, UH-200)............................ 124

Figure 9.8 – Sump and Spray Piping Assembly (UH-100B, UH-100, UL-100) ............. 126

Figure 9.9 – Spray Arm Assembly (UH-200B, UH-200) ................................................ 128

Figure 9.10 – Spray Arm Assembly (UH-100B, UH-100, UL-100) ................................. 130

Figure 9.11 – Fill/Rinse Valve Assembly (UH-200B, UH-200)........................................ 132

Figure 9.12 – Fill/Rinse Valve Assembly (UH-100B, UH-100, UL-100) ......................... 134

Figure 9.13 – Wash Pump Piping, Drain Pump, Drain Valve and Drain Piping ............... 136

(All Models)

Figure 9.14 – Wash Pump/Motor Assembly (All Models) ................................................ 138

Figure 9.15 – Booster Assembly (UH-200B, UH-100B) .................................................. 140

Figure 9.16 – Solid State Controls (All Models) ............................................................... 142

Figure 9.17 – Base Mounted Electrical Controls (All Models)......................................... 144

Figure 9.18 – (Optional) Detergent Pump for High Temp Machines ................................ 146

(UH-200B, UH-200, UH-100B, UH-100)

Figure 9.19 – (Optional) Rinse Aid Pump for High Temp Machines................................ 148

(UH-200B, UH-200, UH-100B, UH-100)

Figure 9.20 – (Standard) Chemical Dispensing Pumps for Low Temp Machines ............ 150

(UL-100)

Figure 9.21 – Dishracks, Line Strainer, PRV (All Models) ............................................... 152

LIST OF FIGURES (Cont.)

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Part 1: GENERAL SPECIFICATIONS

PART 1: GENERAL SPECIFICATIONS

1.1 About this Manual

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 any obligation.

Manual Organization

This manual is divided into eleven parts:

♦ Part 1, General Specifications, introduces this manual and the dishwasher models

in general.

♦ Part 2, Installation, explains the installation of the dishwasher and describes the

connection of utilities, chemical dispensing pumps, and initial start-up.

♦ Part 3, Daily Operation, explains operator controls and basic operation. ♦ Part 4, Cleaning and Maintenance, explains cleaning, deliming, preventive maintenance,

and lubrication.

♦ Part 5, explains basic troubleshooting for the operator. ♦ Part 6, explains basic troubleshooting for the service technician. ♦ Parts 7-8, provide detailed repair procedures for the trained service technician. ♦ Part 9, contains parts diagrams and parts lists. ♦ Part 10, contains electrical schematics.

NOTE:

Unless noted otherwise, dimensions, capacities, temperatures, etc., given in this manual are U.S. Customary Measures and the Metric Equivalents of the U.S. customary measures.

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Part 1: GENERAL SPECIFICATIONS

1.2 Model Numbers

UH-200B

The UH-200B is a high temperature (180°F/82°C) sanitizing machine with a built-in booster. (40°F/22°C) rise booster is standard requiring a minimum incoming water supply temperature of 140°F/60°C. A (70°F/39°C) rise booster is available which requires a minimum incoming water supply temperature of 110°F/43°C. The UH-200B is a fresh water rinse machine. Final rinse water enters the final rinse spray system under line pressure. A portion of the final rinse water is retained for the next wash cycle.

UH-200

The UH-200 is a high temperature (180°F/82°C) sanitizing machine without a built-in booster. It requires a minimum incoming water supply temperature of 180°F/82°C. The UH-200 is a fresh water rinse machine. Final rinse water enters the final rinse spray system under line pressure. A portion of the final rinse water is retained for the next wash cycle.

UH-100B

The UH-100B is a high temperature (180°F/82°C) sanitizing machine with a built-in booster. (40°F/22°C) rise booster is standard requiring a minimum incoming water supply temperature of 140°F/60°C. A (70°F/39°C) rise booster is available which requires a minimum incoming water supply temperature of 110°F/43°C. The UH-100B is a fresh water pumped final rinse machine. Final rinse water enters the wash tank and is recirculated by the wash pump. The final rinse water is retained for the next wash cycle.

UH-100

The UH-100 is a high temperature (180°F/82°C) sanitizing machine without a built-in booster. It requires a minimum incoming water supply temperature of 180°F/82°C. The UH-100 is a fresh water pumped final rinse machine. Final rinse water enters the wash tank and is recirculated by the wash pump. The final rinse water is retained for the next wash cycle.

UL-100

The UL-100 is a low temperature (140°F/60°C) chemical sanitizing machine for use with a sodium hypochlorite (chlorine) based sanitizer at a minimum concentration of 50 PPM (for USA/Consult the local authority for Canada) in the final rinse. It requires a minimum incoming water supply temperature of 140°F/60°C. The UL-100 is a fresh water pumped final rinse machine. Final rinse water enters the wash tank and is recirculated by the wash pump. The final rinse water is retained for the next wash cycle.

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1.3 Standard Equipment

All Models

♦ 304 stainless steel construction ♦ Interchangeable upper and lower spray arms ♦ 3/4 Hp pump/motor assembly ♦ Top mounted slide-out control cabinet ♦ Solid state electronic controls ♦ Pumped drain ♦ Flexible fill and drain hoses ♦ Door safety switch ♦ Easily removable scrap screen ♦ Dishracks (peg rack and flat bottom rack)

Part 1: GENERAL SPECIFICATIONS

UH-200B

♦ 40°F/22°C rise booster ♦ Tank heater ♦ Low water tank heat protection ♦ Top and side panels

UH-100B

♦ 40°F/22°C rise booster ♦ Tank heater ♦ Low water tank heat protection

UL-100

♦ Three built-in chemical dispensing pumps

for detergent, rinse aid, and sanitizer

1.3 Options

UH-200B

♦ 70°F/39°C rise booster ♦ Detergent pump kit (P/N 900799) ♦ Rinse aid pump kit (P/N 900803) ♦ Pressure reducing

valve 3/4" (P/N 107550)

UH-200

♦ Tank heater ♦ Low water tank heat protection ♦ Top and side panels

UH-100

♦ Tank heater ♦ Low water tank heat protection

UH-200

♦ Detergent pump kit (P/N 900799) ♦ Rinse aid pump kit (P/N 900803) ♦ Pressure reducing

valve 3/4" (P/N 107550)

UH-100B

♦ 70°F/39°C rise booster ♦ Detergent pump kit (P/N 900800)

UH-100

♦ Detergent pump kit (P/N 900800)

♦ Rinse aid pump kit (P/N 900802) ♦ Rinse aid pump kit (P/N 900802) ♦ Full side panel kit (P/N 900804)

All Models

♦ 6" Legs (set of 4) (P/N 324087)

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Part 1: GENERAL SPECIFICATIONS

1.4 Dimensions, Capacities, and Rough-in

Dimensions (All Models)

Height 33-3/4" [858mm] Width 23-7/8" [607mm] Length 23" [584mm]

Volume crated: 15 cu. ft. [.4 cu.m] Approx. Shipping weight crated: 215 lbs [98 Kg]

Wash Tank Capacities

UH-200B, UH-200 ≅ 3.6 US gal. (14 liters) UH-100B, UH-100 ≅ 1.8 US gal. (7 liters) UL-100 ≅ 2.3 US gal. (8.7 liters)

Water Usage (per rack)

UH-200B, UH-200 1.1 US gal. (4.2 liters)

UH-100B, UH-100 1.8 US gal. (6.8 liters)

UL-100 2.3 US gal. (8.7 liters)

Total Cycle Time

UH-200B, UH-200 90 seconds

UH-100B, UH-100 120 seconds

UL-100 155 seconds

Racks per hour (NSF rated)

UH-200B, UH-200 30 racks/hr.

UH-100B, UH-100 24 racks/hr.

UL-100 19 racks/hr.

[607]

Flexible Conduit

Main Power Connection Terminal Block

Electrical Power Routing

PLAN VIEW

Model UH-200B Model UH-200 Model UH-100B Model UH-100 Model UL-100

2" [51]

23" [584]

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Part 1: GENERAL SPECIFICATIONS

1.4 Dimensions and Capacities, and Rough-in

3" [76]

Wall

Clearance

Electric

Water

23"

[584]

/4" [375]

Clearance

/8"

[42]

SIDE VIEW

/4" [362]

[858]

/4"

Model UH-200B Model UH-200

WARNING:

Refer to Part 2: Installation, Sections 2.1 through

2.9, before connecting the dishwasher to utilities.

Drain

3" [76]

Wall

Clearance

23"

[584]

/2" [394]

Clearance

/8"

[42]

SIDE VIEW

/4" [362]

[858]

/4"

Model UH-100B Model UH-100 Model UL-100

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Part 2: INSTALLATION

This Page

Intentionally

Left

Blank

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Page 19

Part 2: INSTALLATION

PART 2: INSTALLATION

2.1 Introduction

In This Part—

• Unpacking the dishwasher

• Permanent Placement

• Making Utility Connections

• Installing Optional Components

2.2 Unpack the Dishwasher

Your dishwasher was completely assembled, inspected, and thoroughly tested at our factory before shipment to your installation site.

• The dishwasher is shipped on a single pallet.

• Optional components may have been shipped separately.

• Check your packing list thoroughly.

NOTE:

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

BE SURE TO COMPLETE AND RETURN THE

WARRANTY CARD

INCLUDED WITH YOUR MACHINE.

NOTE:

The installation of your dishwasher must meet all applicable health and safety codes and conform to good trade practice.

Perform the following steps to unpack the dishwasher:

1. Remove protective wrap and hold downs from the pallet.

2. Inspect for any shipping damage. If damage is found, save the packing material and contact the carrier immediately.

3. Check the interior of the dishwasher for the following items stowed inside:

• 1 set of dishracks

• Upper and lower spray arm assemblies

• Round scrap screen

• Rubber pads for leveling feet (set of 4)

• 3/4" line strainer (P/N 110768) (Model UH-200B, UH-200 Only)

• Warranty information packet

4. Remove the dishwasher from the skid.

5. Move the dishwasher to its permanent location.

Refer to Section 2.3, Permanent Placement.

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Page 20

Part 2: INSTALLATION

2.3 Permanent Placement

Special Tools —

• Bubble level (3 ft.)

Perform the following steps to place the dishwasher in its permanent location. Refer to the machine diagrams in Section 1.4, Dimensions and Capacities, page 4-5.

1. Before moving the dishwasher into position, inspect the location site to ensure the electrical, plumbing, and ventilation services (if required) are provided in the correct locations. Compare the site connections with the dishwasher to ensure they will match when the machine is set in its permanent location.

NOTE:

Some local codes may require that the dishwasher be sealed to the floor with silicon or comparable sealing method.

2. Lift the dishwasher and adjust the leveling feet out.

3. Position dishwasher in its permanent location.

• Minimum clearance between the rear of the machine and back wall is 3" [76mm].

• Minimum height of the machine with adjustable feet turned in fully is 33-3/4" [858mm].

4. Place a 3 ft. level on top of the dishwasher or inside the dishwasher on the track assembly to level the dishwasher front to back. Adjust level by turning the adjustable feet. Level side to side with the level placed on the top of the dishwasher.

5. Pull the dishwasher out far enough to gain access to the rear and prepare utility connections. A removable rear access door is located at the back of the machine.

6. Install the rubber pads on the leveling feet prior to returning machine to its permanent position.

2.4 Water Connections

The following warning and attention statements apply to all dishwasher models.

WARNING:

The installation of this unit must conform to local codes or, in the absence of local codes, to all National Codes governing plumbing, sanitation, safety and good trade practices.

!! ATTENTION INSTALLER !!

The dishwashers described in Sections 2.4.1 and 2.4.2 are fitted with 6 ft. [1829mm], 1/2" I.D. flexible fill hoses located at the rear of the machine.

Make sure supply hose does not kink, resulting in a water flow restriction.

NOTE:

Your plumbing installation must allow the machine to be pulled out for repair.

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Page 21

Part 2: INSTALLATION

2.4.1 (Water Connections) Models UH-200B, UH-200

Refer to the Table below for minimum water supply requirements.

Minimum Minimum-Maximum

Model Temperature Flowing Pressure*

UH-200B with 40°F/22°C Booster 140°F/60°C 20-22 PSI (138-151 kPa)

UH-200B-70 with 70°F/39°C Booster 110°F/43°C 20-22 PSI (138-151 kPa)

UH-200 without Booster 180°F/82°C 20-22 PSI (138-151 kPa)

*Flowing pressure is observed when the fill water solenoid valve is open while the machine is in a final rinse operation. Refer to Part 3, Operation, Section 3.21. for a description of the front panel display final rinse pressure readings.

1. If flowing pressure exceeds 22 PSI/151kPa, a pressure reducing valve, PRV, must be installed in the incoming water supply, and adjusted to the min/max listed above. The PRV is supplied by others or may be purchased (unmounted) from Champion.

2. Champion supplies a 3/4" line strainer (unmounted) and shipped inside the dishwasher. The line strainer must be installed in the water supply line upstream from the PRV.

3. A 3/4" manual shutoff valve (supplied by others) should be installed in the water supply line upstream from the PRV and line strainer. The valve must be the same size as or larger than the water supply line. The shutoff valve allows for servicing of the machine.

4. The dishwasher is supplied with a 1/2" I.D., 6 ft. [1829mm], reinforced flexible hose. The hose is fitted with a 3/4" female garden hose fitting.

Incoming Water Supply Water Supply

CAUTION:

The reinforced fill hose supplied with the dishwasher is designed for high pressure and high temperature application and should never be replaced with common garden hose.

5. Connect a 3/4" I.D. minimum copper water supply line fitted with a 3/4" male garden hose fitting (supplied by others). Make sure the water supply line is flushed out before making connection to the machine.

Figure 2.4.1

Water Connections

Model UH-200B, UH-200

(UH-200B shown)

6 ft. [1829mm] flexible fill hose

3/4" PRV, pressure reducing valve

3/4" line strainer

3/4" Water shutoff Valve

3/4" I.D. copper water supply line

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Page 22

Part 2: INSTALLATION

2.4.2 (Water Connections) Models UH-100B, UH-100, UL-100

Refer to the Table below for minimum water supply requirements.

Model Temperature Pressure*

UH-100B with 40°F/22°C Booster 140°F/60°C 25-95 PSI (173-656 kPa)

UH-100B-70 with 70°F/39°C Booster 110°F/43°C 25-95 PSI (173-656 kPa)

UH-100 without Booster 180°F/82°C 25-95 PSI (173-656 kPa)

UL-100 140°F/60°C 25-95 PSI (173-656 kPa)

*Incoming water supply pressure should be tested with a pressure gauge (supplied by others) at the dishwasher water supply connection. Incoming water supply pressure must be able to maintain a minimum flowing pressure of 25 PSI [173 kPa].

1. The fill solenoid valve mounted in the machine (supplied by Champion) is equipped with a flow control that will accommodate the min./max. incoming line pressures listed above. A PRV, pressure reducing valve, is not required.

2. If incoming line pressure is below 25 PSI [173 kPa], the customer must make the necessary provisions to increase the incoming line pressure minimum of 25 PSI [173 kPa].

3. The fill solenoid valve is equipped with a built-in line strainer. A separate line strainer is not shipped with this machine.

4. A 3/4" manual shutoff valve (supplied by others) should be installed in the water supply line. The valve must be the same size as or larger than the water supply line. The shutoff valve allows for servicing of the machine.

5. The dishwasher is supplied with a 1/2" I.D., 6 ft. [1829mm], reinforced flexible hose. The hose is fitted with a 3/4" female garden hose fitting.

Minimum Minimum-Maximum

Incoming Water Supply Incoming Water Supply

at the dishwasher to the required

CAUTION:

The reinforced fill hose supplied with the dishwasher is designed for high pressure and high temperature application and should never be replaced with common garden hose.

6. Connect a 3/4" I.D. minimum copper water supply line fitted with a 3/4" male garden hose fitting (supplied by others). Make sure the water supply line is flushed out before making connection to the machine. The installation of a pressure gauge (supplied by others) is recommended, but not required, in the 3/4" supply line after the shutoff valve.

Figure 2.4.2

Water Connections

Model UH-100B, UH-100, UL-100

(UH-100B shown)

6 ft. [1829mm] flexible fill hose

Pressure Gauge

3/4" Water shutoff Valve

3/4" I.D. copper water supply line

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Page 23

Part 2: INSTALLATION

2.5 Drain Connections

The following instructions apply to all dishwasher models. Refer to Fig. 2.5.3 below.

WARNING:

The installation of this unit must conform to local codes or, in the absence of local codes, to all National Codes governing plumbing, sanitation, safety and good trade practices.

!! ATTENTION INSTALLER !!

All dishwashers are fitted with 6 ft. [1829mm], 5/8" I.D. flexible reinforced drain hoses located at the rear of the machine.

Make sure drain hose does not kink, resulting in a water flow restriction.

NOTE:

Your plumbing installation must allow the machine to be pulled out for repair.

1. The dishwasher drain hose may be routed to an indirect floor drain (not shown), or connected directly to a sink drain (see Fig. 2.5.3). The installer must follow all local plumbing, sanitary, and safety codes where applicable. Local codes may vary from the recommended connections shown in Fig. 2.5.3 below.

2. Connect the 5/8" I.D. flexible reinforced drain hose supplied to a 1-1/2" wye (Y) drain fitting. Use a 5/8" hose adapter (supplied by others).

3. Do not reduce the diameter of the drain hose connection

or add additional length to the drain hose.

4. Do not connect the drain hose to a 90° drain fitting.

Do not use a 90° fitting

CAUTION:

The drain must have a minimum flow capacity of 15 US gal. per min [54 liters per minute], and

12.5 Imperial gallons per minute.

5. The maximum height of the drain or the drain hose should not exceed 3 ft. [915mm].

1-1/2"

"Y"

Fitting

cut away to show rear

1-5/8"

[42mm]

Figure 2.5.3

Recommended Direct Drain Connections

for All Models

cut away to show rear

1-1/2"

"Y"

Fitting

1-5/8"

[42mm]

Max. Drain

Height

3 ft.

[915mm]

FloorFloor

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Page 24

Part 2: INSTALLATION

2.6 Installation and Service Switch (Model UH-200B, UH-100B Only)

The following instructions apply to Models UH-200B and UH-100B which are equipped with a Champion built-in booster.

The Booster Installation and Service Switch is provided to fill the built-in booster tank with water prior to placing the dishwasher in service for the first time. It can also be used by service technicians to interrupt 120VAC control power to service the machine.

!! ATTENTION INSTALLER !!

CAUTION:

Failure to fill the booster before operating the dishwasher will cause damage to the booster heater components and will void the machine warranty.

Figure 2.6.1

Installation and Service Switch

Models UH-200B and UH-100B Only

BOOSTER INSTALLATION

AND SERVICE SWITCH

OFF

BOOSTER FILL

NOTE:

Switch is located behind the lower front panel on the left front of the dishwasher.

NOTE:

Perform the following procedure after all plumbing and electrical connections have been made. Make sure the interior of the machine is clean and free of debris.

1. Remove screws holding lower front panel. Lift panel up, forward and off.

2. Push and hold the switch in the BOOSTER FILL position until you hear water entering the wash tank of the machine.

DO NOT FILL THE WASH TANK WITH WATER.

3. Release the switch.

4. Push the switch up to the ON position.

5. Booster fill is complete.

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Page 25

Part 2: INSTALLATION

2.7 Electrical Connections (Single Phase)

2.7.1 Models UH-200B, UH-100B Only

WARNING:

The installation of electrical supplies and controls must conform to local codes or, in the absence of local codes, the National Electrical Code and good trade practices.

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

!! ATTENTION INSTALLER !!

Use flexible conduit to connect incoming power to the dishwasher to allow the machine to be pulled out 5 ft. [1524mm] for servicing. A service loop is recommended. Service enters at the right rear corner of the machine. The main connection block is located on the right side of the dishwasher. See Section 1.4, page 4.

A qualified electrician must compare the electrical power supply with the machine electrical specifications stamped on the MACHINE ELECTRICAL CONNECTION PLATE before connecting to the incoming service through a fused disconnect switch or circuit breaker (supplied by others). The plate is located near the main terminal block.

CAUTION:

DO NOT CONNECT models UH-200B or UH-100B to a 120VAC circuit or to a 208-240VAC (2 wire system) utilizing two power wires plus a ground.

2. Models UH-200B and UH-100B utilize a 208-240VAC (3 wire plus ground system) consisting of three power wires which includes a current carrying neutral wire. A fourth wire for machine ground also must be provided.

Refer to the diagram and table below for UH-200B and UH-100B power requirements.

120V

208-240/60/1

208-240V

L1 L2 N

Voltage Hz Phase Machine FLA Machine FLA

208/60/1 44.4 50/50 58.9 60/60

120V

40°F/22°C Rise Booster

Min. Wire Amp/ Max. Fuse Size

3 Wire Plus Ground System

Diagram

70°F/39°C Rise Booster

Min. Wire Amp/ Max. Fuse Size

220/60/1 46.4 50/50 61.7 70/70

230/60/1 48.1 50/50 64.0 70/70

240/60/1 49.8 50/50 66.4 70/70

Single Phase Power Requirements

Models UH-200B and UH-100B Only

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Page 26

Part 2: INSTALLATION

2.7 Electrical Connections (Single Phase) Cont.

2.7.2 Models UH-200, UH-100, UL-100 Only

WARNING:

The installation of electrical supplies and controls must conform to local codes or, in the absence of local codes, the National Electrical Code and good trade practices.

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

!! ATTENTION INSTALLER !!

Use flexible conduit or cable to connect incoming power to the dishwasher to allow the machine to be pulled out 5 ft. [1524mm] for servicing. A service loop is recommended. Service enters at the right rear corner of the machine. The main connection block is located on the right side of the dishwasher. See Section 1.4, page 4.

2. Models UH-200, UH-100 and UL-100 utilize a 120VAC power supply. Power cord and plug are supplied by others.

Voltage Machine Hz FLA Phase

120/60/1 23.4 25/25

Voltage Machine Hz FLA Phase

120/60/1 19.3 25/25

Voltage Machine Hz FLA Phase

120/60/1 12.5 15/15

Min. Wire

Ampacity/

Max. Fuse Size

Min. Wire

Ampacity/

Max. Fuse Size

Min. Wire

Ampacity/

Max. Fuse Size

Single Phase Power Requirements

Models UH-200 Only

Single Phase Power Requirements

Models UH-100 Only

Single Phase Power Requirements

Models UL-100 Only

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Part 2: INSTALLATION

2.8 Electrical Connections (Three Phase)

2.8.1 Models UH-200B, UH-100B Only

WARNING:

The installation of electrical supplies and controls must conform to local codes or, in the absence of local codes, the National Electrical Code and good trade practices.

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

!! ATTENTION INSTALLER !!

2. Models UH-200B and UH-100B utilize a 208-240VAC (4 wire plus ground system) consisting of four power wires which includes a current carrying neutral wire. A fifth wire for machine ground also must be provided.

CAUTION:

Before connecting power to the machine check that the voltage between the power wire chosen and the current carrying neutral does not exceed 120VAC ± 15VAC.

Refer to the diagram and table below for UH-200B and UH-100B power requirements.

208-240V

120V

208-240V

L1 L2 L3N

208-240V

4 Wire Plus Ground System

208-240/60/3

Diagram

Voltage Hz Phase Machine FLA Machine FLA

208/60/3 32.0 35/35 40.3 45/45

220/60/3 33.2 35/35 42.0 45/45

230/60/3 34.3 35/35 43.5 45/45

240/60/3 35.4 40/40 45.0 50/50

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40°F/22°C Rise Booster

Min. Wire Amp/ Max. Fuse Size

Three Phase Power Requirements

Models UH-200B and UH-100B Only

70°F/39°C Rise Booster

Min. Wire Amp/ Max. Fuse Size

Page 28

Part 2: INSTALLATION

2.9 Chemical Connections

2.9.1 General (All Models)

!! ATTENTION DISHWASHER OWNER !!

Your dishwasher is designed to work best with liquid commercial dishwashing chemicals. Detergents must be a commercial non-foaming liquid. Champion strongly recommends that

you contact a qualified chemical supplier to supply these products and to setup your machine for the first time.

Your machine was shipped with the chemical dispensing adjustments set at their minimum settings, because of variations in chemical products. As a result of these variations, Champion is not able to advise you on the proper dispenser settings for any particular product nor can we recommend one supplier over another. You may wish to consult your equipment dealer or your Champion authorized service agent for help in contacting a chemical supplier in your area.

NOTE:

Residential automatic dishwashing detergents and rinse aids found in most grocery stores are designed to work in machines with cycles of 15 minutes or longer. Your Champion dishwasher cycle is complete in less than 3 minutes.

Champion does not recommend the use of residential automatic detergents and rinse aid products. These products may accumulate in your machine and produce poor washing results.

CAUTION:

Never use residential non-automatic dishwashing detergents such as JOY™ or DAWN™, or any other liquid designed for the handwashing of wares, in your machine.

Extreme foaming inside your Champion dishwasher will cause operation problems.

NOTE: FOR MODEL UL-100 ONLY

The UL-100 model is a low temperature dishwasher utilizing a chemical sanitizing final rinse. Use a sodium hypochlorite (Chlorine) based sanitizer at a minimum concentration of 50 PPM in the final rinse. Use chlorine test papers to verify and monitor the 50 PPM chlorine level. (Consult local authority in Canada for proper concentration).

Some metals, including silver, aluminum, and pewter, are attacked by sodium hypochlorite (chlorine sanitizer). Avoid washing these metals in a UL-100 model dishwasher.

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Page 29

2.9.1 General (All Models) Cont.

NOTE:

The detergent and rinse aid chemical dispensing pumps are optional equipment on Models UH-200B, UH-200, UH-100B, and UH-100 dishwashers. The pumps may have been specified when the dishwasher was ordered and installed at the factory.

The following instructions assume that your dishwasher was delivered to your installation site with the dispensing pumps installed and explains the procedures for placing the chemical dispensing system in service for the first time.

If optional pump(s) are not installed, Refer to Section 2.10, Installing Optional Chemical Pumps, to install the chemical pump(s) before proceeding with Sections 2.9.2 through 2.9.4.

Three chemical dispensing pumps (detergent, rinse aid, and sanitizer) are standard on the UL-100 model.

Part 2: INSTALLATION

!! ATTENTION CHEMICAL SUPPLIER !!

WARNING:

The instructions contained in Sections 2.9.2 through 2.9.4 require adjustments to the Fill/Chemical Dispenser Circuit Board located inside the top mounted slide-out control cabinet. When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

NOTE:

Refer to Part 7, Solid State Circuit Board Set-up and Repair, Section 7.3.5, page 66, Fill/Chemical Dispenser Board, before making any adjustments to the dispenser board settings. .

Perform the following steps in preparation for making dispenser pump adjustments.

1. Loosen – do not remove – the (2) retaining screws at the bottom of the lower front access panel. Lift the lower panel up and forward to remove.

2. Check for chemical dispensing pump(s) located at the front of the machine base.

3. Refer to Fig. 2.9.1. Open the dishwasher door.

4. Locate the two screws, one in each corner of the top hood, that retain the slide-out control cabinet.

5. Remove the screws and pull the slide-out cabinet forward to gain access to the Fill/Chemical Dispenser Circuit Board.

(continued on next page)

FILL/CHEMICAL DISPENSER

BOARD

Figure 2.9.1

Control Cabinet

Retaining Screws

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Page 30

Part 2: INSTALLATION

Floor

cut away to show rear

Route chemical tubing through rear access hole above fill and drain hose access

Max.

6 ft.

[1829mm]

2.9 Chemical Connections (Cont.)

2.9.1 General (All Models) Cont.

!! ATTENTION CHEMICAL SUPPLIER !! (continued from previous page)

6. Refer to Fig. 2.9.2 showing the Fill/Chemical Dispenser Circuit Board.

7. There are (4) adjustable potentiometers.

• Fill- 2 to 40 seconds

• Detergent- 1 to 30 seconds

• Sanitizer- 1 to 30 seconds

• Rinse aid- 1 to 30 seconds

8. Two dots on one end of the potentiometer serve as the dial pointer.

9. Turn CW to increase time setting.

010

DOTS ON END

POTENTIOMETER

010

FILL DETERGENT SANITIZER RINSE

010

AID

NOTE:

The graduated numbers (0-10) around the potentiometers

Fill/Chemical Dispenser Circuit Board

Figure 2.9.2

DO NOT correspond to time settings. Use them for position reference only, not an actual time setting indication.

Refer to Sections 2.9.2 through 2.9.4 for specific adjustments and chemical priming instructions for your model dishwasher.

10. Refer to Fig. 2.9.3. showing the recommended chemical bottle placement. Bottles may be placed on either side of the dishwasher.

11. Bottles must be placed no farther than 6 ft. [1829mm] from the machine.

12. I.D. tags identify chemical tubing.

13. Pick-up tubes are inserted directly in chemical bottles.

I.D.TAG

INSERT PICK-UP

IN BOTTLE

TUBE

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Chemical Bottle Placement

Figure 2.9.3

Page 31

Part 2: INSTALLATION

Rinse aid injection point

Final rinse

manifold

2.9.2 Models UH-200B, UH-200 (Chemical Adjust and Prime)

The following chemical adjustment information applies to UH-200B and UH-200 only. Refer to Section 2.9.1, page 18, for a description of the dispenser adjust potentiometers.

1. The data below will assist in adjusting the time settings for the dispenser pumps:

• The wash tank holds 3.6 US gal. [13.6 liters] of water.

• Initial fill receives three doses of detergent from the detergent pump.

• Detergent is injected in the wash tank through a fitting at the rear of the wash tank.

• Detergent is injected during the first 1 to 16 seconds of the wash cycle.

• The final rinse utilizes 1.1 US gal [4.2 liters] of water per rack.

• Rinse aid is injected into the final rinse manifold. The manifold is located in the top left rear corner of the dishwasher.

• Rinse aid is injected during the last 11 seconds of the final rinse cycle.

Dispenser pump output rates:

• Detergent- 69 ml/min.

• Rinse aid- 35 ml/min.

Detergent time adjustment- Turn the POT CW to increase run time from the beginning of the wash cycle.

Rinse aid time adjustment- The final rinse cycle is 11 seconds. Turning the POT CW moves the pump start point backward from the end of the rinse cycle.

2. The following describes the operation of the chemical prime button.

Refer to Fig. 2.9.4 below.

• The POWER button must be pushed ON to operate the prime button.

• The PRIME button is enabled whenever the temperature display is active.

• The PRIME button operates both dispensing pumps at the same time.

WASH

Champion

POWER

START

EXTENDED

WASH

Figure 2.9.4

UH-200B, UH-200 Touchpad/Display

RINSE

160 F

TEMPERATURE

PRESSURE

PRIME

To prime the detergent and rinse aid pumps:

3. Insert pick-up tubes in the chemical bottles.

4. Push POWER button ON. Machine fills. Temperature is displayed.

5. Open dishwasher door and observe detergent injection point on rear wall of machine.

6. Push and hold PRIME button until detergent is observed entering the machine.

7. Push and hold the PRIME button and observe chemical flowing at the rinse aid injection point located in the final rinse manifold.

8. Priming is complete.

Figure 2.9.5

Rinse aid injection point

Models UH-200B, UH-200

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Page 32

Part 2: INSTALLATION

2.9.3 Models UH-100B, UH-100 (Chemical Adjust and Prime)

The following chemical adjustment information applies to UH-100B and UH-100 only. Refer to Section 2.9.1, page 18, for a description of the dispenser adjust potentiometers.

1. The data below will assist in adjusting the time settings for the dispenser pumps:

• The wash tank holds 1.8 US gal. [6.8 liters] of water.

• Proper fill water level is even with the bottom of the round scrap screen.

• Detergent and rinse aid enter the wash tank through the fill chute on the left side of the machine.

• Detergent is injected during the first 1 to 16 seconds of the wash cycle.

• The final rinse utilizes 1.8 US gal [6.8 liters] of water per rack.

• Rinse aid is injected as the fill/rinse valve adds water during the final rinse.

Dispenser pump output rates:

• Detergent- 69 ml/min.

• Rinse aid- 69 ml/min.

Detergent time adjustment- Turn the POT CW to increase run time from the beginning of the wash cycle.

Rinse aid time adjustment- The final rinse cycle is 15 seconds. Turning the POT CW moves the pump start point backward from the time the fill valve closes for the final rinse.

2. The following describes the operation of the chemical prime buttons.

Refer to Fig. 2.9.6 below.

• The POWER button must be pushed ON to operate the prime button.

• The PRIME button is enabled whenever the temperature display is active.

• The PRIME button operates both dispensing pumps at the same time.

Champion

POWER START

EXTENDED

WASH

Figure 2.9.6

UH-100B, UH-100 Touchpad/Display

160 F

TEMPERATURE

To prime the detergent and rinse aid pumps:

3. Insert pick-up tubes in the chemical bottles.

4. Push POWER button ON. Machine fills. Temperature is displayed.

5. Open dishwasher door and observe fill chute on left inside of machine.

6. Push and hold PRIME button until detergent and rinse aid are observed entering the interior of the machine. Rinse aid is usually blue in color, hold PRIME button until the colored liquid is detected.

7. Priming is complete.

PRIME

Figure 2.9.7

Fill Chute

Models UH-100B, UH-100, UL-100

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Page 33

Part 2: INSTALLATION

2.9.4 Models UL-100 (Chemical Adjust and Prime)

The following chemical adjustment information applies to UL-100 only. Refer to Section 2.9.1, page 18, for a description of the dispenser adjust potentiometers.

1. The data below will assist in adjusting the time settings for the dispenser pumps:

• The wash tank holds 2.5 US gal. [10 liters] of water.

• Proper fill water level is even with the top of the handle on the round scrap screen.

• Detergent, rinse aid and sanitizer enter the wash tank through the fill chute on the left side of the machine.

• Detergent is injected during the first 1 to 18 seconds of the wash cycle.

• The final rinse utilizes 2.3 US gal [8.7 liters] of water per rack.

• Rinse aid is injected as the fill/rinse valve adds water during the final rinse.

Dispenser pump output rates:

• Detergent- 69 ml/min. • Sanitizer- 69 ml/min

• Rinse aid- 69 ml/min.

Detergent time adjustment- Turn the POT CW to increase run time from the beginning of the wash cycle.

Rinse aid time adjustment- The final rinse cycle is 15 seconds. Turning the POT CW moves the pump start point backward from the time the fill valve closes for the final rinse.

2. The following describes the operation of the chemical prime buttons.

Refer to Fig. 2.9.8 below.

• The POWER button must be pushed ON to operate the prime buttons.

• The PRIME buttons are enabled whenever the temperature display is active.

• The PRIME buttons operate their respective dispenser pumps independently.

Champion

POWER START

EXTENDED

WASH

Figure 2.9.8

UL-100 Touchpad/Display

To prime the dispensing pumps:

3. Insert pick-up tubes in their respective chemical bottles.

4. Push POWER button ON. Machine fills. Temperature is displayed.

5. Open dishwasher door and observe fill chute on left inside of machine.

6. Push and hold each PRIME button in succession

• Detergent

• Rinse aid

• Sanitizer

7. Observe that each chemical enters the machine.

8. Priming is complete.

140 F

TEMPERATURE

PRIME

DETERGENT SANITIZER

RINSE AID

4-2

Figure 2.9.9

Fill Chute Discharge

Models UH-100B, UH-100, UL-100

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Page 34

Part 2: INSTALLATION

2.10 Installing Optional Chemical Pumps

Perform the following steps to install the optional detergent and rinse aid pumps for the models in Sections 2.10.1 and 2.10.2

WARNING:

When working on the dishwasher, disconnect the electric service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

2.10.1 Models UH-200B, UH-200

Refer to Fig. 2.10.1 at right. The illustration shows the typical installation of the detergent and rinse aid pumps. Pump kits contain the necessary parts for field installation and are available from your authorized Champion parts supplier.

Signal connection points: 2A Max @ 120VAC

• The detergent pump is a peristaltic pump enclosed in a black housing.

• The rinse aid pump is a peristaltic pump enclosed in a black housing..

Route tubing

UH-200B, UH-200 Chemical Pumps

Figure 2.10.1

Rinse aid

To install the detergent pump:

1. Remove the lower front access panel.

2. Mount the pump on the machine base with two screws.

3. Route the detergent tubing out the rear of the machine through the access hole located above and between the fill and drain hoses.

4. Pump rotation is clockwise. The supply tube connects on the left side of the pump the discharge tubing connects on the right side of the pump.

5. Remove the 1/8" plug at the rear of the machine and replace with the 90° detergent fitting. Apply teflon tape to the fitting threads to ensure a watertight seal.

Detergent

4-16

4-9

(continued of next page)

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Page 35

Part 2: INSTALLATION

2.10.1 Models UH-200B, UH-200

(continued from previous page)

To install the detergent pump (continued):

6. Connect the detergent tubing from the outlet of the pump to the 90° fitting

7. Connect the pump motor wires to the harness wires supplied in the installation kit.

8. Refer to Fig. 2.10.2 below. Connect the wiring harness to the 10 pin terminal block located on the lower right side of the machine. Connect the #2 harness wire to the Common (#2) terminal on the block. Connect the #24 wire to the Detergent #24 terminal on the block.

9. Refer to Section 2.9.2, page 19, for pump priming and adjustment procedures.

10. Check all connections for leaks.

11. Installation is complete.

4-10 H04

Common

Hot

PUMP

MOTOR

Harness #2

Harness # x

# x = Detergent #24 Rinse aid #25 Sanitizer #26

Terminal

Block

!!ATTENTION INSTALLER!!

If you are installing pumps not supplied by Champion then the chemical connection points are limited to 2 AMP maximum.

2 AMP maximum amp load per pump; 6 AMP total amp load.

54 54

DET

R/A

SANI

COM

Figure 2.10.2

Chemical Pump Connection Terminal Block

(Lower right side of machine base)

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Page 36

Part 2: INSTALLATION

2.10 Installing Optional Chemical Pumps (Cont.)

2.10.1 Models UH-200B, UH-200

To install the rinse aid pump:

1. Remove the lower front access panel.

2. Mount the pump on the machine base with two screws.

3. Route the rinse aid tubing out the rear of the machine through the access hole located above and between the fill and drain hoses.

4. Pump rotation is clockwise. The supply tube connects on the left side of the pump; the discharge tubing connects on the right side of the pump.

5. Remove the 1/8" plug located in the final rinse manifold.

6. Install the rinse aid check valve. Apply teflon tape to the valve threads to ensure a seal.

7. Route the rinse aid tubing to the rinse manifold and connect to the check valve.

8. Connect the pump motor wires to the harness wires supplied in the kit with wire nuts.

9. Refer to Fig. 2.10.2 on page 23. Connect the wiring harness to the 10 pin terminal block located on the lower right side of the machine. Connect the #2 harness wire to the Common (#2) terminal on the block. Connect the #25 wire to the rinse aid #25 terminal on the block.

10. Refer to Section 2.9.2, page 19, for pump priming and adjustment procedures.

11. Check all connections for leaks.

12. Installation is complete.

4-16

4-5 4-6

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4-4

Page 37

Part 2: INSTALLATION

2.10.2 Models UH-100B, UH-100

Chemical discharge tubes were installed at the factory and stowed in the base of the machine. Installation of the optional detergent pump and/or the rinse aid pump requires mounting the pump, connecting all tubing to the pump(s) and making the electrical connections.

WARNING:

When working on the dishwasher, disconnect the electric service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

Refer to Fig. 2.10.3 at right. The illustration shows the typical installation of the detergent and rinse aid pumps. Pump kits contain the necessary parts for field installation and are available from your authorized Champion parts supplier.

Signal connection points: 2A Max @ 120VAC

• The detergent pump is a peristaltic pump enclosed in a black housing.

Route tubing

• The rinse aid pump is a peristaltic pump enclosed in a black housing.

UH-100B, UH-100 Chemical Pumps

To install the detergent pump:

1. Remove the lower front access panel.

2. Mount the pump on the machine base with two screws.

3. Route the detergent pick-up tube and tubing out the rear of the machine through the access hole located above and between the fill and drain hoses.

4. Connect the supply and discharge tubing to the pump. Pump rotation is clockwise. The supply tube connects on the left side of the pump; the discharge tubing connects on the right side of the pump.

5. Chemical discharge tubing runs to the fill chute assembly located on the left side of the machine.

6. The fill chute discharge is located on the left interior wall of the wash chamber.

Figure 2.10.3

Rinse aid

Detergent

1-9A

(continued of next page)

4-16

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4-2

Page 38

Part 2: INSTALLATION

2.10 Installing Optional Chemical Pumps (Cont.)

2.10.2 Models UH-100B, UH-100

(continued from previous page)

To install the rinse aid pump:

1. Remove the lower front access panel.

2. Mount the pump on the machine base with two screws.

3. Route the pick-up tube and rinse aid supply tubing out the rear of the machine through the access hole located above and between the fill and drain hoses.

4. Pump rotation is clockwise. The supply tube connects on the left side of the pump; the discharge tubing connects on the right side of the pump.

5. The rinse aid discharge tubing is preinstalled and is marked by a blue tag. Connect the discharge tubing to the pump using a tie wrap supplied in the kit.

6. Connect the supply tubing to the left side of the pump and route the pick-up tube to the chemical container.

7. Connect the pump motor wires to the harness wires supplied in the kit with wire nuts.

8. Refer to Fig. 2.10.2 on page 23. Connect the wiring harness to the 10 pin terminal block located on the lower right side of the machine. Connect the #2 harness wire to the Common (#2) terminal on the block. Connect the #25 wire to the rinse aid #25 terminal on the block.

9. Refer to Section 2.9.2, page 20, for pump priming and adjustment procedures.

10. Check all connections for leaks.

11. Installation is complete.

2.11 Initial Start-up (All Models)

Review Part 2, Installation, Sections 2.2 through 2.10, to ensure that all plumbing, electrical, and chemical connections have been properly made by qualified personnel.

Plumbing connections are the proper size and supply pressures are correct.

√

• Water supply is on.

• Drains are correct size and functional.

Electrical power requirements and wiring connections are correct.

• Power is on at the main service panel.

Chemical Dispensing systems are installed and chemical supplies replenished.

• Detergent and rinse aid for Models UH-200B, UH-200, UH-100B, UH-100.

• Detergent, rinse aid, and sanitizer for Model UL-100.

(See next page)

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Page 39

Part 2: INSTALLATION

Review Part 3, Daily Operation, Sections 3.1 through 3.5, for instructions on the operation of your dishwasher, then perform the following checks for your model machine:

2.11.1 Models UH-200B, UH-200 (Initial Start-up)

Water Level Probe

Push the POWER button.

√

• 888F, and LED's flash on display

• No error codes (E0, E1, E2, E3)

• Machine fills

• Detergent pump runs (if applicable)

Open door and check water level in tank

√

• Water level at middle sensor of water level probe. Probe located on interior left side of dishwasher.

• Close door.

• Check for leaks around dishwasher.

Run a cycle without dishes to bring the machine to operating temperature.

• 150°F/66°C

Push START button.

• Check for leaks.

• Dishwasher completes normal cycle.

• Final rinse temperature reaches minimum of 180°F/82°C.

Push POWER button.

• Displays flash 888F

• Dishwasher completes normal auto-shutdown cycle.

• Check for leaks in drain piping.

Push the POWER button.

• Machine fills again.

Push START button.

• Machine begins cycle

Water Level

Push EXTENDED WASH button.

√

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• Wash cycle holds in continuous wash mode

• Extended wash LED illuminates.

Push EXTENDED WASH button.

• Wash cycle returns to normal wash mode

• Extended wash LED goes out.

• Normal cycle completed.

Push POWER button.

• Displays flash 888F

• Dishwasher completes normal auto-shutdown cycle.

• Initial Start-up is complete.

Page 40

Part 2: INSTALLATION

2.11 Initial Start-up (Cont.)

2.11.2 Models UH-100B, UH-100, UL-100

Push the POWER button.

√

• 888F, and LED's flash on display

• No error codes (E0, E1, E2)

• Machine fills, LO display is normal.

• Detergent pump runs (if applicable)

Open door and check water level in tank

• (UH-100B, UH-100) Water level even with the bottom of the round scrap screen

• (UL-100) Water level even with the top of the handle on the round scrap screen

Close door.

• Check for leaks around dishwasher.

Check wash tank minimum operating temperature.

• (UH-100B, UH-100) minimum 150°F/66°C.

• (UL-100) minimum 120°F/49°C, optimum 140°F/60°C.

Push START button.

• Check for leaks.

• Dishwasher completes normal cycle.

• Final rinse temperature reaches minimum of 180°F/82°C for UH-100B, UH-100.

• Final rinse temperature maintains minimum of 120°F/49°C for UL-100.

010

DOTS ON END

POTENTIOMETER

010

FILL DETERGENT SANITIZER RINSE

NOTE:

Refer to Part 7, Section 7.3.5, pages 66-67, for instructions on adjusting the fill water level for Models UH-100B, UH-100, and UL-100 dishwashers.

010

AID

Push POWER button.

√

• Displays flash 888F

• Dishwasher completes auto-shutdown cycle.

• Check for leaks in drain piping.

Push the POWER button.

√

• Machine fills again.

Push START button.

• Machine begins cycle

Push EXTENDED WASH button.

• Wash cycle holds in continuous wash mode

• Extended wash LED illuminates.

Push EXTENDED WASH button.

√

• Wash cycle returns to normal wash mode

• Extended wash LED goes out.

• Normal cycle completed.

√

Push POWER button.

• Displays flash 888F

• Dishwasher completes normal auto-shutdown cycle.

• Initial Start-up is complete.

UH-100B, UH-100 Water Level

Halfway up the sloped angle of screen handle

UL-100 Water Level

even with top of screen handle

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Page 41

Part 3: DAILY OPERATION

PART 3: DAILY OPERATION

3.1 Introduction

In This Part—

• Preparing your Dishwasher

• Dishwasher Loading

• Description of Operator Controls

• Basic Operation

3.2 Preparing your Dishwasher (All Models)

Review Part 2, Installation, and check your site to ensure that all plumbing and electrical connections have been properly made by qualified personnel. Check the installation of chemical dispensing systems, if applicable.

Perform the following steps to prepare your machine for operation.

1. Check the exterior of the machine for any foreign material and remove.

2. Check the interior of the machine and remove any foreign material.

3. Remove the lower spray arm(s) and the round scrap screen.

4. Make sure the pump intake strainer located in the bottom of the sump is in place and clean.

5. Replace the round scrap screen and clean if required.

6. Make sure the upper and lower spray arms are in place and nozzles are clean. The arms are held in place by knurled retaining screws. The arms are interchangeable.

• Models UH-200B, and UH-200 have separate upper and lower wash

and upper and lower rinse arms.

• Models UH-100B, UH-100, and UL-100 have upper and lower wash arms.

7. Check the chemical supply containers, and fill as required.

8. Open the water supply valve. Check for leaks and take corrective action as required.

9. Check the drain and/or drain connections to ensure drains are functional.

10. Turn the main power on at the breaker panel or fused disconnect switch.

Knurled retaining screw

Pump Intake

Screen

All Models

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UH-100B, UH-100, UL-100 Shown

Page 42

Part 3: DAILY OPERATION

Champion

POWER START

EXTENDED

WASH

PRIME

TEMPERATURE PRESSURE

3.3 Loading your Dishwasher (All Models)

Perform the following steps to prepare and load your wares for washing.

1. Scrape and rinse wares to remove heavy food particles and other debris.

2. Place dishes edgewise in a peg rack.

Place cups and bowls upside down in a flat rack.

Spread silverware evenly in a single layer in a flat bottom rack.

Batching silverware upright in a utensil cup is not recommended.

DO NOT OVERLOAD DISHRACKS.

3. Place the loaded dishrack on the open door and slide

Champion

POWER START

EXTENDED

WASH

TEMPERATURE PRESSURE

PRIME

into the dishwasher.

DO NOT WASH MORE THAN ONE RACK AT A TIME.

Champion

POWER START

EXTENDED

TEMPERATURE PRESSURE

WASH

PRIME

CAUTION:

Never stand or sit on the door, nor place

heavy boxes or crates on the door.

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Part 3: DAILY OPERATION

3.4 Description of Operator Controls and Displays

Note the location and function of the following components. These components directly affect the normal operation of all other operator controls.

Door Safety Switch Magnet:

The door safety switch magnet is located at the top left inside corner of the door.

The magnet operates the door safety switch located in the top mounted slide-out control cabinet.

The door must be fully closed whenever the dishwasher is in an automatic cycle.

NOTE:

The dishwasher will not operate when the POWER button is pushed, if the door is open on initial power up.

Figure 3.4.1

Door Safety Magnet Location

Door Magnet

Control Circuit Breaker

The 8 AMP control circuit breaker is located on the left lower side of the dishwasher behind the lower front access panel.

The circuit breaker is designed to trip and break the 120VAC control voltage to the dishwasher in the event of an overload or other abnormal condition. This protects the dishwasher's solid state circuitry.

The circuit breaker must be reset manually.

The dishwasher will not operate if the circuit breaker has tripped.

Figure 3.4.2

Circuit Breaker Location

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Circuit

Breaker

Page 44

Part 3: DAILY OPERATION

3.4 Description of Operator Controls and Displays (Cont.)

Refer to the illustrations and table below for the location and function of the operator controls and displays.

Touchpad/Display

Champion

POWER

POWER START

START

6 7

WASH

EXTENDED

WASH

RINSE

6 9

EXTENDED

WASH

TEMPERATURE

PRESSURE

PRIME

UH-200B, UH-200

PRIME

UH-100B, UH-100

Champion

POWER START

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6 9

EXTENDED

WASH

TEMPERATURE

DETERGENT SANITIZER

PRIME

RINSE AID

UL-100

Page 45

Part 4: DAILY OPERATION

CONTROL TYPE DESCRIPTION OF OPERATION

Power ON/OFF Switch

Power ON LED

Start Switch

Cycle ON LED

Extended Wash Switch

Touchpad

membrane

switch

Touchpad light

emitting diode

Touchpad

membrane

switch

Touchpad light

emitting diode

Touchpad

membrane

switch

All Models:

Power is OFF. Push Power Button— Activates the solid state controls and begins

automatic fill operation.

Power is ON. Push Power Button— Begins auto-shutdown cycle. Turns power OFF

when auto-shutdown cycle is complete.

All Models:

Indicates when power is ON.

All Models:

Starts the dishwasher automatic cycle.

All Models:

Indicates an automatic cycle has been selected.

All Models:

Pauses the wash cycle and holds machine in a continuous wash mode. Push again, machine

finishes wash cycle followed by a final rinse.

Extended Wash LED

Wash Temperature LED

Rinse Temperature LED

Temperature Display

Final Rinse Water Pressure Display

Chemical Pump Prime Switch(es)

Touchpad light

emitting diode

Touchpad

light

emitting diode

Touchpad

light

emitting diode

LED

display

mounted on

timer board

LED

display

mounted on

timer board

Touchpad

membrane

switch(es)

All Models:

Indicates machine is in extended wash mode.

Model UH-200B, UH-200 ONLY:

Indicates that temperature display (9) is showing the temperature of the water in the wash tank during the automatic cycle.

Model UH-200B, UH-200 ONLY:

Indicates that temperature display (9) is showing the temperature of the water in the final rinse manifold during a final rinse.

All Models:

Indicates the temperature sensed by the wash or the final rinse temperature probe.

Model UH-200B, UH-200 ONLY:

Indicates the flowing pressure of water in the final rinse manifold during the final rinse cycle. Min./Max. 20-22 PSI [138-151 kPa].

All Models:

Operates the chemical pumps whenever (9) is activated. UH-200B, UH-200, UH-100B, UH-100 single switch operates both pumps at same time.

UL-100 each prime switch operates its pump independently.

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Part 3: OPERATION

3.5 Basic Operation

The following illustrations and diagrams describe the basic operation of your dishwasher. Review Sections 3.2 and 3.3 before operating your machine.

NOTE:

All temperature readings in the instructions below are given in degrees Fahrenheit (°F). Pressure readings are given in pounds per square inch (PSI). All models provide a metric option to display temperature in degrees Celsius (°C) and pressure in kilopascals (kPa). Temperature readings and error codes are followed by the letter "C" when the metric option is enabled.

3.5.1 Operating the UH-200B and UH-200

Champion

Push the POWER Button:

All LEDs illuminate and 888F flash on displays. Internal diagnostics displays Error Codes: E1, E2, E3 in temperature display if problem exists.

Power LED lit. LOF displayed if wash temp is below 115°F, actual wash temp displayed above 115°F/46°C. PRIME button is active whenever the temperature is displayed. Machine Fills. Optional detergent pump injects detergent. Wash tank heat on (UH-200B, UH-200). Booster heat on (UH-200B only). Wash LED illuminates indicating the temperature display is reading wash tank temperature.

POWER START

EXTENDED

WASH

RINSE

TEMPERATURE PRESSURE

PRIME

WASH

Champion

POWER START

EXTENDED

WASH

150 F

RINSE

TEMPERATURE PRESSURE

PRIME

(If the START button is pushed during initial fill the Start LED will illuminate indicating that a cycle has been selected but the machine will complete the fill before the cycle begins.

Run one automatic cycle WITHOUT DISHES to bring the dishwasher to operating temperature. Push the START Button:

The Start LED illuminates and the automatic 90-second cycle begins. Detergent pump adds detergent. Wash pump runs for 60 seconds. Wash pump stops, machine drains a portion of the water out of the wash tank.

WASH

Champion

POWER START

EXTENDED

WASH

180 F

RINSE

TEMPERATURE PRESSURE

PRIME

Rinse LED illuminates indicating the temperature display is reading final rinse temperature. Final rinse operates for 11 seconds. Optional rinse aid pump injects rinse aid.

Final rinse temperature 180°F/82°C minimum. Final rinse flowing pressure 20 PSI/138 kPa minimum.

Pressure display indicates final rinse flowing pressure. Rinse LED goes out. Start LED goes out. Automatic cycle is complete. Open door, remove rack, insert another rack and repeat.

Opening the door anytime during the cycle pauses the cycle. Cycle resumes where it stopped when door is closed. Pushing the POWER button stops the cycle and initiates the AUTO-SHUTDOWN CYCLE.

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Page 47

Part 3: DAILY OPERATION

3.5.1 Operating the UH-200B and UH-200 (Cont.)

WASH

Champion

POWER START

EXTENDED

WASH

EXTENDED WASH FEATURE

The EXTENDED WASH button pauses the normal wash cycle and holds the dishwasher in a continuous wash mode until the extended wash button is pushed again. To activate the extended wash feature:

Push the START button to begin a cycle. WAIT 16 seconds to allow the optional detergent pump time to inject detergent. Push the EXTENDED WASH button. The Extended Wash LED illuminates. The Power LED remains lit, the Start LED remains lit.

Dishwasher is held in continuous wash mode.

Push the EXTENDED WASH button again. The Extended Wash LED goes out. The Power LED remains lit, the Start LED remains lit.

If the extended wash is deactivated before the 60-second wash cycle is complete, the dishwasher will complete the normal wash cycle, drain and finish with a final rinse.

If the extended wash is deactivated after the 60-second wash cycle time has elapsed, then the dishwasher will immediately drain, and finish with a final rinse.

150 F

RINSE

TEMPERATURE PRESSURE

PRIME

WASH

Champion

POWER START

EXTENDED

WASH

EXTENDED

WASH

150 F

RINSE

TEMPERATURE PRESSURE

WASH

888F 888

RINSE

TEMPERATURE PRESSURE

PRIME

AUTO-SHUTDOWN CYCLE

At the end of the day, pushing the POWER button initiates the Auto-shutdown cycle which includes an automatic interior rinse down to aid in cleaning the machine. Pushing the POWER button when the dishwasher is in cycle also will start the auto shutdown cycle. To activate the auto shutdown cycle:

Push the POWER button. All LED's go out. The Temperature display and the Pressure display flash 888F. The machine drains. The fill valve opens to rinse down the interior of the dishwasher. The machine drains completely. All displays go out. Dishwasher is OFF. Begin cleaning operation or push POWER button to refill dishwasher.

NOTE:

If the dishwasher is idle for more than 4 hours, it will automatically enter the auto-shutdown cycle.

This completes the basic operation for the UH-200B and UH-200.

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Page 48

Part 3: DAILY OPERATION

3.5 Basic Operation (Cont.)

NOTE:

3.5.1 Operating the UH-100B and UH-100, and UL-100

Champion

POWER START

Push the POWER Button:

All LEDs illuminate and 888F flash on displays. Internal diagnostics displays Error Codes: E0, E1, E2 in temperature display if problem exists.

Power LED lit. LOF displayed if wash temp is below 115°F, actual wash temp displayed above 115°F/46°C.

PRIME button(s) are active whenever the temperature is displayed. (UL-100 has three PRIME buttons) Machine Fills. Wash tank heat on (UH-100B, UH-100). Booster heat on (UH-100B only).

Model UL-100 does not have tank heat.

EXTENDED

WASH

TEMPERATURE

PRIME

DETERGENT SANITIZER

PRIME

RINSE AID

(140°F/60°C for UL-100)

Champion

POWER START

EXTENDED

WASH

150 F

TEMPERATURE

PRIME

(If the START button is pushed during initial fill the Start LED will illuminate indicating that a cycle has been selected but the machine will complete the fill before the cycle begins.

Model UH-100B, UH-100 Run one automatic cycle WITHOUT DISHES to bring the dishwasher to operating temperature.

UH-100B, UH-100 minimum wash temperature of 150°F/66°C. UL-100 minimum wash temperature is 120

Push the START Button:

The Start LED illuminates and the automatic cycle begins. Detergent pump adds detergent. Wash pump runs. Wash pump stops, machine drains the water out of the wash tank.

F/49°C. The optimum temperature for UL-100 is 140°F/60°C.

(continued on next page)

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Page 49

Part 3: DAILY OPERATION

3.5.1 Operating the UH-100B and UH-100, UL-100 (Cont.)

(140°F/60°C for UL-100)

Champion

POWER START

Drain Stops. Fill/Rinse valve opens and hot water enters the wash tank. (UH-100B, UH-100 Optional rinse aid pump injects rinse aid.) (UL-100 ONLY Standard rinse aid pump injects rinse aid. Standard sanitizer pump injects sanitizer.) Temperature display indicates temperature of the final rinse water.

Final rinse temperature 180°F/82°C minimum for UH-100B, UH-100. Final rinse temperature 120

F/49°C minimum, 140°F/60°C optimum for UL-100.

EXTENDED

WASH

180 F

TEMPERATURE

PRIME

Wash pump runs for 3 seconds and stops. Fill/Rinse valve closes. Wash pump runs again until final rinse cycle is complete.

Wash pump stops Start LED goes out. Automatic cycle is complete. Open door, remove rack, insert another rack and repeat.

Opening the door anytime during the cycle pauses the cycle. Cycle resumes where it stopped when door is closed. Pushing the POWER button stops the cycle and initiates the AUTO-SHUTDOWN CYCLE.

Champion

POWER START

EXTENDED WASH FEATURE

The EXTENDED WASH button pauses the normal wash cycle and holds the dishwasher in a continuous wash mode until the extended wash button is pushed again. To activate the extended wash feature:

Push the START button to begin a cycle. WAIT 16 seconds to allow the optional detergent pump (standard on UL-100) time to inject detergent. Push the EXTENDED WASH button. The Extended Wash LED illuminates. The Power LED remains lit, the Start LED remains lit.

Dishwasher is held in continuous wash mode.

Push the EXTENDED WASH button again. The Extended Wash LED goes out. The Power LED remains lit, the Start LED remains lit.

If the extended wash is deactivated before the wash cycle is complete, the dishwasher will complete the normal wash cycle, drain and finish with a final rinse.

If the extended wash is deactivated after the normal wash cycle time has elapsed, then the dishwasher will immediately drain, and finish with a final rinse.

EXTENDED

WASH

The three second wash pump run time as the fill/rinse valve adds final rinse water to the wash tank removes air and makes

}

sure the wash pump pumps at maximum capacity.

150 F

TEMPERATURE

(140°F/60°C for UL-100)

PRIME

(continued on next page)

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Part 3: DAILY OPERATION

3.5.1 Operating the UH-100B and UH-100, UL-100 (Cont.)

Champion

POWER START

EXTENDED

WASH

150 F

TEMPERATURE

(140°F/60°C for UL-100)

PRIME

Champion

POWER START

AUTO-SHUTDOWN CYCLE

EXTENDED

WASH

888F

TEMPERATURE

PRIME

At the end of the day, pushing the POWER button initiates the auto-shutdown cycle which includes an automatic interior rinse down to aid in cleaning the machine. Pushing the POWER button when the dishwasher is in cycle also will start the auto-shutdown cycle. To activate the auto-shutdown cycle:

Push the POWER button. All LED's go out. The Temperature display flash 888F. The machine drains. The fill valve opens to rinse down the interior of the dishwasher. The wash pump runs to complete the interior rinse down. The machine drains completely. All displays go out. Dishwasher is OFF. Begin cleaning operation (See Part 4, page 39) or push POWER button to refill dishwasher.

NOTE:

If the dishwasher is idle for more than 4 hours, it will automatically enter the auto-shutdown cycle.

This completes the basic operation for the UH-100B, UH-100 and UL-100.

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Part 4: CLEANING AND MAINTENANCE

PART 4: CLEANING AND MAINTENANCE

In This Part—

• Introduction

• Daily cleaning schedules

• Deliming procedure

• Preventive maintenance schedules

• Lubrication

4.1 Introduction

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

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

4.2 Daily Cleaning Schedules

Every 2 hours of operation and after each meal period

1. Drain the dishwasher.

2. Clean the round scrap screen and pump intake screen.

3. Check and clean the spray arms.

4. Reassemble the dishwasher.

At the End of the Day

1. Drain the machine.

2. Clean the round scrap screen and pump intake screen.

3. Clean spray arms.

4. Wipe the interior of the machine with a soft damp cloth.

CAUTION:

Do not hose down the exterior of the machine with water.

5. Thoroughly clean the exterior of machine with mild soap solution.

6. Reassemble the machine.

7. Leave door open to aid in drying the interior of the dishwasher.

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Part 4: CLEANING AND MAINTENANCE

4.3 Deliming Schedules (All Models)

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

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.

WARNING:

Consult your chemical supplier for an appropriate deliming solution, usage instructions, protective gear and specific safety procedures.

The following general instructions are provided to assist the operator in deliming the dishwasher. In no case do these instructions supersede the chemical supplier's instructions in the use of a specific deliming product.

4.1.2 Deliming Procedure (All Models)

1. Remove all racks and wares from the dishwasher.

2. Remove chemical pick-up tubes from the containers and place in a catch pan on the floor.

• UH-200B, UH-200, UH-100B, UH-100 may utilize detergent and rinse aid.

• UL-100 utilizes detergent, rinse aid, and sanitizer.

3. Push POWER button to enter auto-shutdown cycle if machine is already on.

4. Push POWER button again to fill machine.

5. Run four (4) automatic cycles to clear chemical from chemical supply tubing.

6. Push POWER button to enter auto-shutdown cycle and drain the machine completely.

7. Push POWER button to fill machine.

8. Open door and add deliming solution (per chemical supplier's instructions) directly in wash tank.

• UH-200B, UH-200 hold 3.6 US gal. [13.6 liters] of water.

• UH-100B, UH-100 hold 1.8 US gal. [6.8 liters] of water.

• UL-100 holds 2.3 US gals. [8.7 liters] of water

9. Close door.

10. Push START button and immediately push EXTENDED WASH button.

11. Run machine in extended wash mode (per chemical supplier's recommended time).

12. Push EXTENDED WASH button to exit extended wash mode. Machine will complete automatic cycle.

13. Open door and inspect interior for mineral deposits. Repeat steps 3-11 if required.

14. Run four (4) additional cycles to flush all deliming chemicals from machine.

15. Replace chemical pick-up tubes in containers and prime the chemical dispensing system.

16. Deliming is complete.

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Part 4: CLEANING AND MAINTENANCE

4.4 Preventive Maintenance Schedules

Daily Maintenance Requirements

Perform the following procedures every day.

1. Check the chemical supply containers and replenish as needed.

2. Inspect scrap screens for bent or damaged parts.

3. Check the spray arm bearings and make sure arms turn freely.

Weekly Maintenance Requirements

Perform the following procedures every week.

1. Inspect for leaks including all piping and supply connections. Tighten or repair as required.

2. Inspect the door and door gasket for proper fit and ease of operation.

3. Check the operation of the door safety switch.

4. Check the flexible water supply and drain hoses at the rear of machine to ensure they are not kinked.

5. Place chemical pick-up tubes in containers of hot water to flush crystallized chemical from the supply tubing.

Semi-Annual Maintenance Requirements

Perform the following procedures every six months.

1. Inspect all chemical connections and supply tubing for leaks.

2. Check the building drain system and clean as needed.

Yearly Maintenance Requirements

Perform the following procedures every year.

1. Inspect the installation site for cleanliness and any foreign material around the machine. Clean as required.

2. Check the overall condition of the machine. Replace any worn or damaged parts.

4.5 Lubrication

There are no lubrication points on the dishwasher. Pump motor bearings are sealed and require no lubrication.

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Part 5: OPERATOR TROUBLESHOOTING

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Part 5: OPERATOR TROUBLESHOOTING

PART 5: OPERATOR TROUBLESHOOTING

5.1 Introduction

In This Part—

• Troubleshooting basics

• Using the Touchpad/Display to evaluate problems.

• Reading error codes

• Troubleshooting guide

5.2 Troubleshooting Basics

STEP 1:

The first step in troubleshooting your dishwasher is knowing how it works under normal conditions. Review Part 3, Operation, pages 29-36 for a description of proper loading, operator controls and basic operating procedures.

STEP 2:

Check the general condition of your dishwasher.

Does the dishwasher appear level?

√

Are the spray arms, and screens clean and in place? Is the door fully closed?

√

STEP 3:

Some problems may be resolved by double-checking the supply connections to your dishwasher.

Perform the following steps to double-check your dishwasher service connections.

Push the POWER button on your dishwasher OFF, then

√

Turn the main power OFF at the main service disconnect switch or fused circuit breaker. If your dishwasher has a cord and plug, disconnect the plug and reconnect. Turn the main power ON and recheck the dishwasher operation.

Turn the dishwasher water supply valve OFF and back on again.

√

Check the water temperature supplied to the dishwasher.

√

Are building water heaters operating correctly?

Check the flow of the building drain system.

√

Are any drains clogged or running slow?

Check the chemical dispensing supplies? Are the strainers clean?

√

Are the pick-up tubes in the correct containers?

Proceed to the next page if the above checks did not resolve the trouble condition.

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Part 5: OPERATOR TROUBLESHOOTING

PART 5: OPERATOR TROUBLESHOOTING (Cont.)

5.3 Using the Touchpad/Display to evaluate problems

All dishwashers perform a self-diagnostics when you push the POWER button to turn the machine on. Watching the display provides information that will help you and your service agent troubleshoot certain problems.

Champion

POWER START

EXTENDED

WASH

Figure 5.3.1

Self-diagnostics Display

(UH-200 Series Shown)

WASH

888F 888

RINSE

TEMPERATURE PRESSURE

PRIME

The dishwasher self-diagnostics provide the following information:

1. All LED's illuminate indicating proper operation of the LEDs.

2. Display window(s) flash 888F. Incorrect temperature readings can be checked by observing the display test to see if all segments are working.

3. Error codes are displayed during self-diagnostics and whenever the component is active during the automatic cycle:

E0F, E1F, E2F and E3F for machines programmed for °F. E0C, E1C, E2C and E3C for machines programmed for °C. (See next page for description of codes).

4. LOF or LOC is observed in the temperature display window. All models may display "LO" because the temperature display indicates temperature from 115°F/46°C and above. This is a normal condition during initial fill.

The LOF or LOC display at any other time may be an indication of a temperature problem in the dishwasher and should be investigated before proceeding with warewashing.

NOTE:

For the UL-100 model, a LOF or LOC temperature reading requires that the machine be drained and refilled with fresh water to maintain a minimum wash temperature of 120°F/49°C. Optimum temperature is 140°F/60°C.

DISPLAY SEGMENT DETAIL

SEGMENTS

ALL WORKING

THE

SHOWS NUMBER

"8".

Champion

POWER START

EXTENDED

WASH

LO F

TEMPERATURE

PRIME

Figure 5.3.2

LO Temperature Displayed

(UH-100 Series Shown)

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Part 5: OPERATOR TROUBLESHOOTING

5.4 Reading Error Codes

The table below gives the meaning of the error codes and the dishwasher component that is disabled until the condition causing the error code is repaired.

E0F, E1F, E2F and E3F are displayed for machines programmed for °F. E0C, E1C, E2C and E3C are displayed for machines programmed for °C.

ERROR CODE MODEL DESCRIPTION /

Displayed in temperature display window

• Indicates a defective booster temperature thermistor in the built-in booster.

• Booster heater is disabled.

• Final rinse temperatures will be low.

• Temperature display shows E0.

E0F

UH-200B UH-100B

E0C

Displayed in temperature display window

• Indicates a booster thermistor was not detected.

• These models do not have a built-in booster.

• No effect on machine operation.

Displayed in temperature display window

• Indicates a bad wash temperature thermistor.

• Wash tank heater is disabled.

• Wash temperatures will be low.

• Temperature display shows E1.

Displayed in temperature display window

• Indicates a bad wash temperature thermistor.

• UL-100 does not have a wash tank heater.

• Temperature display shows E1.

Displayed in temperature display window

• Indicates a bad rinse temperature thermistor.

• No component is disabled.

• Temperature display shows E2.

E1F

E1C

E2F

E2C

UH-200 UH-100

UL-100

UH-200B UH-200 UH-100B UH-100

UL-100

All Models

RESULT

Displayed in pressure display window

E3F

UH-200B UH-200

• Indicates a bad pressure transducer.

• No component is disabled.

• Water pressure display shows E3.

E3C

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Part 5: OPERATOR TROUBLESHOOTING

PART 5: OPERATOR TROUBLESHOOTING (Cont.)

5.5 Troubleshooting Guide

Refer to the troubleshooting guide below to help diagnose and resolve a dishwasher problem.

CONDITION CAUSE SOLUTION

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

when POWER button Main switch off ..................................... Check disconnect at main panel

is pushed. Check machine power switch

Power LED is off. Machine circuit breaker behind ............ Remove lower front panel and

lower front panel is tripped reset breaker at left lower corner

Door safety switch not closed ............... Check magnet on left side of door

Control cabinet pulled out .................... Make sure slide-out control cabinet

Push POWER button again ................... Machine starts, if NOT, contact

of machine.

is fully closed and secured.

service agent

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

on initial fill or Fill hose (rear of machine) kinked ........ Make sure hose has smooth bends

during automatic Fill time not set correctly ...................... UH-100B, UH-100, UL-100 Only,

cycle Contact service agent

Low water supply flow pressure ........... Increase flowing pressure

20-22 PSI [138-151kPa] for UH-200B, UH-200 25-95 PSI [156-656 kPa] for UH-100B, UH-100, UL-100

Faulty fill/rinse valve ............................ Contact service agent

Clogged line strainer ............................. Clean strainer screen/replace strainer

Faulty water supply valve ..................... Replace water supply valve

Water supply line too small .................. Increase water supply line to 3/4" I.D.

Machine will not run Door not closed ..................................... Make sure door is fully closed

when START button Door safety switch not closed ............... Check magnet on left side of door

is pushed. Control cabinet pulled out .................... Make sure slide-out control cabinet

Power LED is on. is fully closed and secured.

Push START button again .................... Machine starts, if NOT, contact

service agent

Machine runs when Motor thermal overload tripped ............ Remove round scrap screen and

START button is check sump and pump strainer, pushed but pump clear possible obstruction and motor is not running wait 10 mins. for overload to reset

Defective motor .................................... Contact service agent

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Part 5: OPERATOR TROUBLESHOOTING

CONDITION CAUSE SOLUTION

Machine washes EXTENDED WASH button ................. Push EXTENDED WASH button

constantly was pushed. Extended wash LED on. Extended wash LED goes out

Machine completes cycle.

Defective control circuit ....................... Contact service agent

Wash water Incoming water temperature ................. Raise incoming temperature to:

temperature is low at machine too low 140°F/60°C for UH-200B, UH-100B

40°F/22°C rise boosters 110°F/43°C for UH-200B, UH-100B 70°F/39°C rise boosters 180°F/82°C for UH-200, UH-100 140°F/60°C for UL-100 and (Drain and refill water for UL-100)

Defective wash temperature probe ....... Check error codes, Section 5.3 and

5.4 and contact service agent

Defective or tripped wash tank ............. Contact service agent

high limit

Wash tank heater has lime build-up ..... Clean and/or delime machine

Defective wash tank heater ................... Contact service agent

(Except UL-100)

Insufficient pumped Clogged pump intake screen ................. Clean pump intake screen

spray pressure Clogged spray arms .............................. Clean spray arms

Scrap screen full of debris .................... Must be kept clean and in place

Low water level in tank ........................ Check water level

Defective pump seal .............................. Contact service agent

Worn spray arm bearings ...................... Replace bearings

Drain valve clogged or defective .......... Contact service agent

Insufficient final rinse Faulty pressure reducing valve (PRV) .. Replace PRV

or no final rinse Improper setting on PRV ...................... Correct flowing pressure setting is

(UH-200B, UH-200) 20-22 PSI [138-151 kPa]

Clogged rinse nozzle and/or arm .......... Clean nozzles and/or spray arm

Clogged line strainer ............................. Clean screen or replace line strainer

Defective fill/rinse solenoid valve ........ Contact service agent

Fill hose (rear of machine) is kinked .... Make sure hose has smooth bends

Water supply line too small .................. Increase water supply line to 3/4" I.D.

Insufficient final rinse Insufficient water supply pressure ........ Increase supply pressure at machine

or no final rinse Correct supply pressure must (UH-100B, UH-100, UL-100) maintain minimum flowing pressure

25 PSI [151 kPa]

Clogged wash nozzles or spray arm ..... Clean nozzles and/or spray arm

Clogged screen in fill/rinse valve ......... Clean screen

Defective fill/rinse solenoid valve ........ Contact service agent

Fill hose (rear of machine) is kinked .... Make sure hose has smooth bends

Clogged pump intake screen ................. Clean pump intake screen

Scrap screen full of debris .................... Must be kept clean and in place

Low water level in tank ........................ Check water level

Defective pump seal .............................. Contact service agent

Worn spray arm bearings ...................... Replace bearings

Water supply line too small .................. Increase water supply line to 3/4" I.D.

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Part 5: OPERATOR TROUBLESHOOTING

PART 5: OPERATOR TROUBLESHOOTING (Cont.)

5.5 Troubleshooting Guide (Cont.)

CONDITION CAUSE SOLUTION

Final rinse water Incoming water temperature ................. Raise incoming temperature to:

temperature is low at machine too low 140°F/60°C for UH-200B, UH-100B

Defective rinse temperature ................. Check error codes, Section 5.3 and

thermistor (All Models) 5.4 and contact service agent Defective booster temperature thermistor Check error codes, Section 5.3 and (UH-200B, UH-100B Only) 5.4 and contact service agent

Defective or tripped high limit ............. Contact service agent

on booster (UH-200B, UH-100B Only)

Defective booster tank heater ............... Contact service agent

(UH-200B, UH100B Only)

40°F/22°C rise boosters 110°F/43°C for UH-200B, UH-100B 70°F/39°C rise boosters 180°F/82°C for UH-200, UH-100 140°F/60°C for UL-100 and (Drain and refill water for UL-100)

Poor washing results Low water ............................................. See "Low or no water condition"

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

Chemical dispensers ............................. Check and replenish supplies/

not operating properly Contact service agent

Insufficient detergents........................... Contact detergent supplier

Crystal specs on dishes ......................... Wrong type of detergent

Wash water milky white color .............. Too much detergent injected

Spots on glasses .................................... May require rinse aid dispenser

Wash water temperature too low .......... See condition “Wash water

Temperature is low”

Improperly scraped dishes .................... See Section 3.3, page 30

Ware improperly placed in rack ............ Use proper racks. Do not

overload racks

Scrap screens full of debris ................... Clean screens

Wash water not drained completely ...... Check drain hose (rear of machine)

for kinks. Make sure hose has

smooth bends

Machine won't drain Drain hose (rear of machine) kinked .... Make sure hose has smooth bends

and/or overflows Drain pump/drain valve clogged ........... Contact service agent

Water level control defective ................ Contact service agent

(UH-200B, UH-200 Only)

Fill Setting incorrect ............................. Contact service agent

(UH-100B, UH-100, UL-100 Only)

POWER LOSS when machine ON, ...... Turn off water supply.

machine refilled when POWER button Push POWER button ON. was pushed after power loss. Push POWER button OFF to

begin auto-shutdown cycle.

When machine shuts off,

Turn water supply on.

Push POWER button to refill.

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Part 6: SERVICE TROUBLESHOOTING

PART 6: SERVICE TROUBLESHOOTING

6.1 Introduction

In This Part—

• Sequence of Operation

• Timing Charts

• Error Codes

• Troubleshooting Guidelines

The instructions contained in Parts 6, 7, 8, and 10 are intended for Champion authorized technicians and should not be used by untrained personnel. Persons not properly trained should not attempt to repair or make adjustments to the dishwasher.

If you require technical assistance, first contact your authorized Champion service agent in your area or :

Champion National Service Department

Champion (USA) Champion (Canada) 1 (800) 858-4477 1 (800) 263-5798

Please have the model, serial number, voltage and phase of your machine ready when you call.

The following warnings apply to the instructions and procedures contained in Parts 6, 7, 8, and 10.

WARNING:

Machine surfaces become hot during normal operation.

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

WARNING:

Observe all safety procedures when power is applied to the machine and during troubleshooting.

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Part 6: SERVICE TROUBLESHOOTING

6.2 Operation Sequence and Timing Charts

Sections 6.2.1 through 6.2.3 explain the operation and timing of the dishwasher models.

6.2.1 Operation Sequence (Model UH-200B, UH-200)

Refer to the operation sequence below and the timing chart on the next page.

Upon application of Input power - all outputs are initially de-energized and the display is disabled. Momentary closure of the Power Pushbutton enables the solid state controls, program jumpers are read and the auto-fill sequence is initiated.

The Fill/Rinse Valve opens until the water level reaches the middle sensor of the Water Level Probe. The Detergent Pump is cycled three times during the initial fill.

The Wash Tank Heater (All Models), which was locked out during the initial fill, begins to heat. The Booster, which was locked out during the initial fill, begins to heat (UH-200B Only).

If the Cycle Start Pushbutton is pressed during the fill, the Cycle LED illuminates. The Wash Cycle starts after the fill is complete.

Pressing the Cycle Start Pushbutton activates the Cycle LED and initiates the Wash Cycle. The Wash Pump Motor is activated for 60 seconds. The Detergent Pump is activated for 1 to a maiximum of 30 seconds. The detergent pump is locked out after the fill valve closes.

The Drain Valve and Drain Pump are then activated until the water level reaches the bottom sensor on the Water Level Probe.

The Rinse LED illuminates and the Fill/Rinse Valve opens until the water level reaches the middle sensor of the Water Level Probe and 11 seconds has expired.

The Rinse Aid Pump is activated for 1 to 11 seconds during the last 11 seconds of the final rinse.

The Cycle LED is deactivated. The 90-second cycle is complete.

If the Cycle Pushbutton is not activated for (4) hours, the machine goes into the auto-shutdown cycle and turns off.

If the Door Safety Switch is opened, all Pumps and Valves are disabled and times are held. Closing the door re-enables Pumps and Valves and resumes timing from the point door was opened.

If the Power Pushbutton is closed while the machine is running, the Auto-shutdown Cycle is initiated. The Touchpad/Display flashes 888’s. The Drain Valve and Drain Pump are activated for 20 seconds. The Fill/Rinse Valve is activated for 10 seconds. The Drain Valve and Drain Pump are then reactivated for 60 seconds. Then the machine turns off.

Closure of the Extended Wash Pushbutton during the Wash Cycle activates the Extended Wash LED and extends the wash beyond normal wash time until the Extended Wash Pushbutton is re-closed, de-activating the Extended Wash LED.

The Chemical Pump Prime Switch is enabled any time the Temperature Display is active.

The Water Level Probe is ignored during the wash cycle.

If the water level reaches the topmost sensor (overfill condition) of the Water Level Probe, then, the Drain Valve/Drain Pump are activated until the water level drops below the lower sensor of the water level probe.

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Part 6: SERVICE TROUBLESHOOTING

6.2.1 Timing Chart (Model UH-200B, UH-200)

Fixed Time

Adjustable Time

0 102030405060708090

FILL CYCLE

fills until water level reaches

middle probe of water level probe assy

(Flow pressure must be Min./Max.:

20-22 PSI [138-151 kPa])

0 1020304050

WASH CYCLE

60 sec.

Wash Pump

Dishwasher

Fill/Rinse Valve

Note 1:

Note 2:

Note 3:

Note 4:

Machine drains until water level drops below the bottom (LOW) water level sensor probe

Final Rinse for 11 secs. after water level drops below the bottom (LOW) water level sensor probe

Solid state timer control prevents detergent pump from running longer than time required to fill/refill wash tank.

Solid state timer control prevents the rinse aid pump from running after the fill/rinse valve closes.

Note 1

0 102030405060708090

Drain Valve/Drain Pump

11 sec.

0 102030405060708090

Fill/Rinse Valve

0 102030405060708090

Detergent Pump

0 102030405060708090

Rinse aid Pump

Note 2

AUTO-SHUTDOWN CYCLE

20 sec. 60 sec.

0 102030405060708090

Drain Valve/Drain Pump

10 sec.

0 102030405060708090

Rinse/Fill Valve

Figure 6.2.1

Timing Chart (UH-200B, UH-200)

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Part 6: SERVICE TROUBLESHOOTING

6.2 Operation Sequence and Timing Charts (Cont.)

6.2.2 Operation Sequence (Model UH-100B, UH-100)

Refer to the operation sequence below and the timing chart on the next page.

The Fill/Rinse Valve activates for a user defined 2 to 40 seconds. Extending the fill time past 20 seconds lengthens the total cycle time.

The Wash Tank Heater (All Models), which was locked out during the initial fill, begins to heat. The Booster, which was locked out during the initial fill, begins to heat (UH-100B Only).

If the Cycle Start Pushbutton is pressed during the fill, the Cycle LED illuminates. The Wash Cycle starts after the fill is complete.

Pressing the Cycle Start Pushbutton activates the Cycle LED and initiates the Wash Cycle. The Wash Pump Motor is activated for 60 seconds. The Detergent Pump is activated for 1 to a maximum of 30 seconds. The detergent pump is locked out after the fill time has elapsed.

The Drain Valve and Drain Pump are then activated for 20 seconds.

The Fill/Rinse Valve is activated for 2 to 40 seconds. At 6 seconds before completion of the Fill , the Wash Pump is activated for 3 seconds to remove air from the pump.

The Rinse Aid Pump runs for 1 to 30 seconds during the last seconds that the fill valve is open.

The Wash Pump recirculates the final rinse water for a fixed time of 14 seconds. The Wash Pump stops and the final rinse water is retained for the next wash cycle.

The Cycle LED is deactivated.

If the Cycle Start Pushbutton is not activated for (4) hours, the machine automatically enters the Auto-shutdown Cycle and turns off.

If the Door Safety Switch is opened, all Pumps and Valves are disabled and times are held. Closing the door re-enables Pumps and Valves and resumes timing from the point door was opened.

If the Power Pushbutton is closed while the machine is running, the Auto-shutdown Cycle is initiated. The Touchpad/Display flashes 888’s. The Drain Valve and Drain Pump are activated for 20 seconds. The Fill/Rinse Valve is activated for a user-defined time. Six seconds before the Fill/Rinse Valve closes, the Wash Pump is activated for 3 seconds to remove air from the pump. The Fill/Rinse Valve closes, and the Wash Pump runs for 10 seconds. The Drain Valve and Drain Pump are then reactivated for 20 seconds. The machine turns off.

Closure of the Extended Wash Pushbutton during the Wash Cycle activates the Extended Wash LED and extends the wash the beyond normal wash time until the Extended Wash Pushbutton is re-closed, de-activating the Extended Wash LED.

The Chemical Pump Prime Switch is enabled any time the Temperature Display is active.

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Part 6: SERVICE TROUBLESHOOTING

6.2.1 Timing Chart (Model UH-100B, UH-100)

Fixed Time

FILL CYCLE

Factory set 25 sec.

Note 1:

Note 2:

Solid state timer control prevents detergent pump from running longer than time required to fill/refill wash tank.

Solid state timer control prevents the rinse aid pump from running after the fill/rinse valve closes.

Adjustable Time

WASH CYCLE

60 sec. *3 sec. 14 sec.

0 10 20 30 40 50 60 70 80 90 100 110 120

Wash Pump

0 10 20 30 40 50 60 70 80 90 100 110 120

Drain Valve/Drain Pump

0 10 20 30 40 50 60 70 80 90 100 110 120

Fill/Rinse Valve

1 to 30 sec.

0 10 20 30 40 50 60 70 80 90 100 110 120

Detergent Pump

0 10 20 30 40 50 60 70 80 90 100 110 120

Rinse aid Pump

0 1020304050

Fill/Rinse Valve

*NOTE 3

20 sec.

2 to 40 sec.

1 to 30 sec.

AUTO-SHUTDOWN CYCLE

20 sec. 20 sec.

*Note 3:

The wash pump starts 6 seconds before the fill/rinse valve closes. The wash pump runs for 3 seconds to evacuate air from wash pump before the pumped final rinse begins.

Figure 6.2.2

Timing Chart (UH-100B, UH-100)

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0 1020304050607080

Drain Valve/Drain Pump

2 to 40 sec.

Fill/Rinse Valve

*NOTE 3

*3 sec.

Wash Pump

10 sec.

Page 68

Part 6: SERVICE TROUBLESHOOTING

6.2 Operation Sequence and Timing Charts (Cont.)

6.2.3 Operation Sequence (Model UL-100)

Refer to the operation sequence below and the timing chart on the next page.

The Fill/Rinse Valve activates for a user defined 2 to 40 seconds. Extending the fill time past 30 seconds lengthens the total cycle time.

Model UL-100 does not have a wash tank heater.

If the Cycle Start Pushbutton is pressed during the fill, the Cycle LED illuminates. The Wash Cycle starts after the fill is complete.

Pressing the Cycle Start Pushbutton activates the Cycle LED and initiates the Wash Cycle. The Wash Pump Motor is activated for 80 seconds and the Detergent Pump is activated for 1 to a maximum of 30 seconds. The detergent pump is locked out if the fill time has elapsed.

The Drain Valve and Drain Pump are then activated for 30 seconds.

The Fill/Rinse Valve is activated for 2 to 40 seconds. At 6 seconds before completion of the Fill , the Wash Pump is activated for 3 seconds to remove air from the pump.

The Rinse Aid Pump runs for 1 to 30 seconds during the last seconds that the fill valve is open. The Sanitizer Pump runs for 1 to 30 seconds during the last seconds that the fill valve is open.

The Wash Pump recirculates the final rinse water for a fixed time of 15 seconds. The Wash Pump stops and the final rinse water is retained for the next wash cycle.

The Cycle LED is deactivated.

If the Cycle Start Pushbutton is not activated for (4) hours, the machine automatically enters the Auto-shutdown Cycle and turns off.

If the Door Safety Switch is opened, all Pumps and Valves are disabled and times are held. Closing the door re-enables Pumps and Valves and resumes timing from the point door was opened.

If the Power Pushbutton is closed while the machine is running, the Auto-shutdown Cycle is initiated. The Touchpad/Display flashes 888’s. The Drain Valve and Drain Pump are activated for 20 seconds. The Fill/Rinse Valve is activated for a user-defined time. Six seconds before the Fill/Rinse Valve closes, the Wash Pump is activated for 3 seconds to remove air from the pump. The Fill/Rinse Valve closes, and the Wash Pump runs for 10 seconds. The Drain Valve and Drain Pump are then reactivated for 30 seconds. The machine turns off.

Closure of the Extended Wash Pushbutton during the Wash Cycle activates the Extended Wash LED and holds the cycle in a continuous wash mode until the Extended Wash Pushbutton is re-closed, de-activating the Extended Wash LED.

The Chemical Pump Prime Switches are enabled any time the Temperature Display is active.

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Part 6: SERVICE TROUBLESHOOTING

6.2.1 Timing Chart (Model UL-100)

Note 1:

Solid state timer control prevents detergent pump from running longer than time required to fill/refill wash tank.

FILL CYCLE

Fixed Time

Adjustable Time

Factory set at 30 sec.

01020304050

Fill/Rinse Valve

WASH CYCLE

80 sec.

0 10 2030405060708090100110 130 140 150 155120

Wash Pump

30 sec.

0 10 2030405060708090100110 130 140 150 155120

Drain Valve/Pump

2 to 40 sec.

0 10 2030405060708090100110 130 140 150 155120

Fill/Rinse Valve

1 to 30 sec.

0 10 2030405060708090100110 130 140 150 155120

Detergent Pump

*NOTE 3

*3 sec.

15 sec.

Note 2:

Solid state timer control prevents the rinse aid pump and sanitizer pump from running after the fill/rinse valve closes.

*Note 3:

The wash pump starts 6 seconds before the fill/rinse valve closes. The wash pump runs for 3 seconds to evacuate air from wash pump before the pumped final rinse begins.

1 to 30 sec.

0 10 2030405060708090100110 130 140 150 155120

Rinse aid Pump

1 to 30 sec.

0 10 2030405060708090100110 130 140 150 155120

Sanitizer Pump

AUTO-SHUTDOWN CYCLE

20 sec. 30 sec.

0 10 20 30 40 50 60 70 80 90 100 110 120

Drain Valve/Pump

2 to 40 sec.

0 10 20 30 40 50 60 70 80 90 100 110 120

Fill/Rinse Valve

*NOTE 3

*3 sec.

0 10 20 30 40 50 60 70 80 90 100 110 120

Wash Pump

10 sec.

Figure 6.2.3

Timing Chart (UL-100)

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Part 6: SERVICE TROUBLESHOOTING

PART 6: SERVICE TROUBLESHOOTING (Cont.)

6.3 Error Codes

All dishwashers perform a self-diagnostics when you push the POWER button to turn the machine on. Watching the display provides information that will help you troubleshoot certain problems.

WASH

Champion

POWER START

EXTENDED

WASH

Self Diagnostics Display

(UH-200 series Shown)

888F 888

RINSE

TEMPERATURE PRESSURE

PRIME

The dishwasher self-diagnostics provide the following information:

1. All LED's illuminate indicating proper operation of the LEDs.

2. Display window(s) flash 888F. Incorrect temperature readings can be checked by observing the display test to see if all segments are working.

3. Error codes are displayed during self-diagnostics and whenever the component is active during the automatic cycle:

E0F, E1F, E2F and E3F for machines programmed for °F. E0C, E1C, E2C and E3C for machines programmed for °C. (See next page for description of codes).

The LOF or LOC display at any other time may be an indication of a temperature problem in the dishwasher and should be investigated before proceeding with warewashing.

NOTE:

DISPLAY SEGMENT DETAIL

SEGMENTS

ALL WORKING SHOWS NUMBER

THE

"8".

Champion

POWER START

EXTENDED

WASH

LO F

TEMPERATURE

PRIME

LO Temperature Displayed

(UH-100 Series Shown)

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Part 6: SERVICE TROUBLESHOOTING

6.3 Error Codes (Cont.)

The table below gives the meaning of the error codes and the dishwasher component that is disabled until the condition causing the error code is repaired.

E0F, E1F, E2F and E3F are displayed for machines programmed for °F. E0C, E1C, E2C and E3C are displayed for machines programmed for °C.

ERROR CODE MODEL DESCRIPTION /

Displayed in temperature display window

• Indicates a defective booster temperature thermistor in the built-in booster.

• Booster heater is disabled.

• Final rinse temperatures will be low.

• Temperature display shows EO.

E0F

UH-200B UH-100B

E0C

Displayed in temperature display window

• Indicates a booster thermistor was not detected.

• These models do not have a built-in booster.

• No effect on machine operation.

Displayed in temperature display window

• Indicates a bad wash temperature thermistor.

• Wash tank heater is disabled.

• Wash temperatures will be low.

• Temperature display shows E1.

Displayed in temperature display window

• Indicates a bad wash temperature thermistor.

• UL-100 does not have a wash tank heater.

• Temperature display shows E1.

Displayed in temperature display window

• Indicates a bad rinse temperature thermistor.

• No component is disabled.

• Temperature display shows E2.

E1F

E1C

E2F

E2C

UH-200 UH-100

UL-100

UH-200B UH-200 UH-100B UH-100

UL-100

All Models

RESULT

Displayed in pressure display window

E3F

UH-200B UH-200

• Indicates a defective pressure transducer.

• No component is disabled.

• Water pressure display shows E3.

E3C

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Part 6: SERVICE TROUBLESHOOTING

6.4 Troubleshooting Guide

The following checklist provides general guidelines for evaluating trouble conditions with the dishwasher. Detailed troubleshooting flow charts are provided in Part 11 at the end of this manual.

STEP 1:

The first step in troubleshooting the dishwasher is knowing how it works under normal conditions. Review Part 3, Operation, pages 29-36, for a description of proper loading, operator controls and basic operating procedures.

STEP 2:

Check the general condition of the dishwasher.

• Does the dishwasher appear level?

• Are the spray arms and screens clean and in place? Is the door fully closed?

STEP 3:

Some problems may be resolved by double-checking the supply connections to your dishwasher.

Perform the following steps to double-check the dishwasher service connections.

• Push the POWER button on the dishwasher OFF, then Turn the main power OFF at the main service disconnect switch or fused circuit breaker. If your dishwasher has a cord and plug, disconnect the plug and reconnect. Turn the main power ON and recheck the dishwasher operation.

• Turn the dishwasher water supply valve OFF and back on again. Check the flexible water supply hose at the rear of the machine. Is it kinked?

• Check the water temperature supplied to the dishwasher. Are building water heaters operating correctly?

• Check the flow of the building drain system. Are any drains clogged or running slow? Check the flexible drain hose at the rear of the machine. Is it kinked?

• Check the chemical dispensing supplies? Are the strainers clean? Are the pick-up tubes in the correct containers?

STEP 4:

Refer to Section 6.3, Error Codes, page 58-59. Observe the self-diagnostics display when the dishwasher is first powered up. Many problems can be identified by evaluating the diagnostics.

STEP 5:

Refer to Part 7, Solid State Circuit Board Set-up and Repair, next page. Double-check the jumper settings on the circuit boards and observe if LED’s on the boards indicate an error condition.

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Part 7: SOLID STATE CIRCUIT BOARDS

PART 7: SOLID STATE CIRCUIT BOARDS

7.1 Introduction

In This Part—

• Control Cabinet Layout and Board Function

• Program Jumper Settings

• Circuit Board LED Description

• Circuit Board Removal and Replacement

• Circuit Board Connector Diagrams

7.2 Control Cabinet Layout and Board Function

Refer to Fig. 7.2.1 below which shows the location and function of the solid state circuit boards. The solid state circuit boards are located in the top mounted slide-out control cabinet on the dishwasher. Program jumpers located on the boards enable the functions for different models.

Door Safety Switch

Time Control Board— • Jumpers to set model type, booster, and touchpad control.

• Controls door safety switch input.

• Controls outputs for wash pump, drain, fill/rinse valve.

• Controls outputs for chemical dispensing pumps.

• Controls water level control (UH-200B, UH-200)

Temperature/Pressure Display Board— • 120VAC power input point

• Jumpers to set wash tank and booster temperatures.

• Jumpers to set English or Metric display option.

• Controls wash heater and booster heater outputs.

• Controls thermistor inputs.

• Controls pressure sensor input (UH-200B, UH-200).

• LED’s display temperature (All Models). Temperature and pressure (UH-200B, UH-200 only).

Circuit Board Layout

Figure 7.2.1

(All Models)

Time Select • Controls fill time (UH-100B, UH-100, UL-100).

(Fill/Chemical Dispenser Board)— • Controls time settings for chemical dispensing pumps.

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Part 7: SOLID STATE CIRCUIT BOARDS

7.3 Replacement Circuit Board Set-up

Jumpers are provided on the Timing Control and the Temperature/Pressure Display boards to set the program for each machine model (See Fig.7.2.1, page 61, for board locations).

Jumpers are set at the factory for new machines and should not require adjustment.

Whenever a board is replaced in the field,

the service technician must set the jumpers on the replacement circuit board to

match the dishwasher model being repaired.

7.3.1 Timer Control Board Program Jumper Settings

The Timer Control Board has three program jumper settings.

JB1— Enables the basic cycle time for all models and water level control for UH-200 series.

Marked “FWR: fresh water rinse,” for UH-200B and UH-200 and “F&D: fill and dump” for UH-100B, UH-100, and UL-100.

JB2— Enables the booster function if the machine is equipped with a built-in booster.

JB3— Enables prime button inputs. Closed for UH-200B, UH-200, UH-100B, and UH-100.

Open for UL-100.

T2 AC Neutral

Transformer

MID

Jumper No.

JB1

= FWR

= F & D

JB2

= No Booster

= Booster

T1 Fused Hot

LOW

DOOR SW.

LIM

WASH

FILL /

DRAIN

RINSE

DOOR SW.

JB3

JB2JB1

= Jumper Closed

= UH-100B, UH-100,

UL-100

= UH-200B, UH-100B

POWER

SANI

RINSE AID

DETERGENT

= Jumper Open

= UH-200B, UH-200

= UH-200,

UH-100, UL-100

JB3

= Three Prime Switches

= One Prime Switch

= UH-200B, UH-200B,

UH-100B, UH-100

= UL-100

Figure 7.3.1

Timer Control Board Jumpers and LED Status Lights

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Part 7: SOLID STATE CIRCUIT BOARDS

7.3.1 Timer Control Board Program Jumper Settings (Cont.)

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

To set the jumpers JB1, JB2, and JB3:

Check and set the jumpers before you install a replacement board.

1. Turn power off at the dishwasher and the main power disconnect switch.

2. Open the front door.

3. Remove screws located in each corner of the hood.

4. Pull the slide-out control cabinet out fully.

5. Fold back the protective mylar drip shield.

6. Compare the jumper settings on the dishwasher circuit board with the settings shown in Fig.7.3.1, page 62.

7. Using fingers or needle nose pliers, set the jumper as required.

• The jumper encloses both pins when the switch is closed.

• The jumper encloses one pin when the switch is open.

This method prevents losing the jumper.

8. Replace the drip shield, and close the slide-out control cabinet fully to position the door safety switch located in the left hand corner of the control cabinet.

9. Close the dishwasher door, turn power on and check the dishwasher for proper operation.

Closed Open

Jumper

7.3.2 Timer Control Board LED Status Lights

Refer to Fig. 7.3.1, previous page

The Timer Control Board has 10 red LED status lights that provide operational information.

POWER

WASH

DRAIN

FILL/ RINSE

SANI

RINSE AID

DETERGENT

— Indicates the Timer Control Board is powered on.

— Indicates output voltage to wash pump contactor is enabled.

— Indicates output voltage to drain valve and drain pump is enabled.

— Indicates output voltage to fill/rinse valve is enabled.

— Indicates output voltage to sanitizer pump is enabled.

—Indicates output voltage to rinse aid pump is enabled.

—Indicates output voltage to detergent pump is enabled.

LED’s illuminate whether pump is installed or not. SANI indicates for all models but is used for UL-100 only.

UH-200B, UH-200 Only:

LIM— Indicates water level has reached the topmost sensor of water level probe.

MID

— Indicates water level has reached the middle sensor of water level probe.

LOW

— Indicates water level has reached the bottom sensor of water level probe.

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Part 7: SOLID STATE CIRCUIT BOARDS

7.3 Replacement Circuit Board Set-up (Cont.)

7.3.3 Temperature/Pressure Display Board Program Jumper Settings

The Temperature/Pressure Display Board has seven program jumper settings.

JB7 —Always set OPEN for normal operation. Future models will not have the JB7 jumper. JB1 —Selects English display (°F and PSI) or Metric (°C and kPa)

JB2 —These jumpers select the minimum wash tank temperature with a differential of +4°F/2°C. JB3 — JB4 —

JB5 —These jumpers select the minimum booster tank temperature with a differential of +4°F/2°C. JB6 —

PRESSURE

SENSOR

CN2

(-) OUT

GND

(+) OUT

VCC

DISP WASH ONLY

ENG/MET

WASH

TEMP

SET

BOOSTER

TEMP

SET

CN5

W/R LED

Jumper No.

JB7 JB1 JB2

JB3 JB4 JB5 JB6

TOTIMING CONTROL CN1

= Jumper Closed

NEUTRAL HOT

BOOST HEAT

WASH HEAT

POWER

Transformer

FUSED

HOT

= Jumper Open

JB7 (Factory use Only)

= Normal = Wash Only

JB1: Display

= English (°F and PSI)

= All Models

Set by factory per end-user's order Default setting is English.

Note: JB7 will be eliminated on future board versions

= Metric (°C and kPa)

Figure 7.3.2

Temperature/Pressure Display Board Jumpers and LED Status Lights

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Part 7: SOLID STATE CIRCUIT BOARDS

7.3.3 Temperature/Pressure Display Board Program Jumper Settings (Cont.)

To set the jumpers JB1-JB7:

Check and set the jumpers before you install a replacement board.

The procedure for setting jumpers are the same as the Timer Control Board.

Refer to Section 7.3.1, top of page 63, To set jumpers JB1, JB2, JB3.

The Jumper Settings select the MINIMUM temperature.

The control board maintains the temperature between the minimum selected temperature and the minimum temperature + 4°F / 2°C.

Jumper No.

JB4

Jumper No.

JB6

WashTemperature Select

JB3 JB2

BoosterTemperature Select

JB5

Temperature/Pressure Display Board Jumpers

Temperature (+4°F/2°C)

180°F 185°F 190°F 195°F

and LED Status Lights

Temperature (+4°F/2°C)

170°F 165°F 160°F 150°F 145°F

140°F

82°C 85°C 88°C 91°C

Figure 7.3.2

77°C 74°C 71°C 66°C 63°C

60°C

ATTENTION !!! Models UH-100B, UH-100, UL-100 Only

W/R LED (CN5) located below JB6 accepts a display cable for UH-200B, UH-200. Discard the jumper on CN5 when installing a replacement board for UH-200B, UH-200.

Models UH-100B, UH-100, UL-100 do not have a display cable on CN5. Make sure a three pin jumper is installed on connector CN5 for these models.

If the jumper is missing, the temperature display during final rinse will not switch from the fill chute to the wash tank thermistor when the fill/rinse valve closes during the final rinse.

7.3.4 Temperature/Pressure Display Board LED Status Lights

Refer to Fig. 7.3.2, page 64.

The circuit board has 3 red LED status lights that provide operational information.

POWER

WASH HEAT

BOOSTER HEAT

— Indicates the Temperature/Pressure Display Board is powered on.

— Indicates output voltage to wash tank heater contactor is enabled.

— Indicates output voltage to booster heater contactor is enabled.

Applicable for models UH-200B, and UH-100B only

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Part 7: SOLID STATE CIRCUIT BOARDS

7.3 Replacement Circuit Board Set-up (Cont.)

7.3.5 Time Select (Fill/Chemical Dispenser) Board

The Time Select (Fill/Chemical Dispenser) Board has 4 adjustable potentiometers.

Refer to Fig. 7.2.1, Circuit Board Layout, page 61, for the location of the Time Select Board.

Control Bd.

010

Detail

010

FILL DETERGENT SANITIZER RINSE

Time Select (Fill/Chemical Dispenser) Board Potentiometers

010

To Timer

010

Figure 7.3.3

010

AID

Adjustment Range

FILL: 2 to 40 secs.

DETERGENT: 1 to 30 secs.

SANITIZER: 1 to 30 secs.

RINSE AID: 1 to 30 secs.

Numbers 0-10 around POTS DO NOT correspond to time settings.

Use numbers for reference only.

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

POTENTIOMETER ADJUSTMENT:

1. Turn power off at the dishwasher and the main power disconnect switch.

2. Open the front door.

3. Remove screws located in each corner of the hood.

4. Pull the slide-out control cabinet out fully.

5. Fold back the protective mylar drip shield.

6. Locate the Fill/Chemical Dispenser Board (See Fig. 7.2.1, page 61).

7. Note the position of the potentiometer adjustment screws. Refer to the potentiometer detail in Fig. 7.3.3 above. Each pot has two small dots in one end of the adjustment dial which denotes the pointer on the dial.

(Continued on next page)

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Part 7: SOLID STATE CIRCUIT BOARDS

POTENTIOMETER ADJUSTMENT (continued):

8. After noting the position of the potentiometers, fully close the slide-out control cabinet. This positions the door safety switch to close when the dishwasher door is closed.

NOTE:

The dishwasher will not operate if the control cabinet is pulled out because the door safety switch will not be aligned with the door safety switch magnet located on the lefthand corner of the machine door.

FILL POTENTIOMETER ADJUSTMENT: (Models UH-100B, UH-100, UL-100 Only)

The UH-200B, and UH-200 model dishwashers do not utilize the fill adjustment. Fill is controlled by the water level probe on UH-200B and UH-200 models.

9. Turn power on at the main disconnect switch.

10. Push the POWER pushbutton on the touchpad/display. Machine fills automatically.

11. Open door and check water level inside the dishwasher.

• UH-100B, UH-100 water level should be halfway up the sloped angle of the handle

of the round scrap screen.

• UL-100 water level should be even with the top of the handle of the round scrap

screen.

12. If water level requires adjustment, refer to Section 2.4, Water Connections, pages 8-10, and make sure supply connections meet specifications. Take any corrective action required before making potentiometer adjustment.

13. Push POWER pushbutton to drain machine.

14. Turn off power at main disconnect, pull out control cabinet and turn Fill POT CW in small incremental steps to increase fill time, CCW to decrease fill time.

15. Repeat steps 8-14, making small incremental changes to the setting until the proper water level inside the wash tank is achieved.

!! OH NO !!

THE DISHWASHER HAS OVERFILLED

WHAT DO I DO NOW?

Perform the following if too large an adjustment has been made to the Fill POT and the water level is higher than the top of the handle of the round scrap screen:

16. Turn the water supply off at the water shutoff valve for the dishwasher.

17. Push the POWER pushbutton OFF to drain the machine.

18. Push the POWER pushbutton ON, then immediately push POWER pushbutton OFF to drain the machine again.

19. Turn main power off at the service disconnect switch.

20. Adjust the Fill POT CCW to reduce fill time.

21. Turn water supply on and begin fill adjustment procedure (steps 8-14) again.

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Part 7: SOLID STATE CIRCUIT BOARDS

7.3 Replacement Circuit Board Set-up (Cont.)

7.3.5 Time Select (Fill/Chemical Dispenser) Board

POTENTIOMETER ADJUSTMENT (continued):

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

Refer to Section 2.9, Chemical Connections, pages 16-21, and to Potentiometer Adjustment, Steps 1-8, pages 66-67, before proceeding with the instructions below.

DETERGENT, RINSE AID, AND SANITIZER POTENTIOMETER ADJUSTMENT:

The UH-200B, UH-200, UH-100B, UH-100 model dishwashers utilize optional detergent and/or rinse aid chemical dispensing pumps. The UL-100 model comes standard with detergent, rinse aid, and sanitizer pumps.

NOTE:

Chemical adjustments require testing equipment to accurately determine the proper type and concentration of commercial dishwashing chemicals. This is best performed by a qualified chemical supplier.

DETERGENT ADJUSTMENT:

Detergent is injected in the first 30 seconds of the automatic cycle. Turn the Detergent POT CW to increase the pump run time, CCW to decrease the pump run time. The minimum setting for the detergent pump is 1 second. The pump is locked out after the fill/rinse valve closes.

RINSE AID AND SANITIZER ADJUSTMENT:

Only the UL-100 low temperature machine contains rinse aid and sanitizer pumps as standard equipment. Models UH-200B, UH-200, UH-100B, UH-100 may have the optional rinse aid pump installed.

• If you want more rinse aid or sanitizer dispensed during the final rinse, turn the POT adjustment CW. This makes the pump activate earlier in the cycle from the moment the fill/rinse valve closes.

• Turn the POT CCW to make the pump activate less time from the moment the fill/rinse valve closes.

ADJUSTMENT EXPLANATION Refer to Fig. 7.3.4, next page.

The illustration shows the fill/rinse valve and dispensing pump(s) portion of the automatic cycle for each model. The example given shows one possible setting; the actual setting may vary.

• Notice that the zero reference point for the pump run time setting is the moment that the fill/rinse valve closes.

• Rinse aid and sanitizer pumps never run final rinse portion of the automatic cycle.

AFTER the fill/rinse valve closes during the

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Part 7: SOLID STATE CIRCUIT BOARDS

RINSE AID AND SANITIZER ADJUSTMENT:

ADJUSTMENT EXPLANATION (Cont.)

• Therefore, to increase dispenser pump run time, the time adjustment on the POT must activate the pump before the valve closes earlier in the cycle.

• If a POT is set to “0” on the adjustment dial, then the pump will start 1 second before fill/rinse valve closes.

• If a POT is set to “4” on the adjustment dial, then the pump will start 11 seconds before the fill/rinse valve closes.

• For UH-100B, UH-100, and UL-100: The time the fill/rinse valve is open varies!! Fig. 7.3.4 shows fill/rinse valve time set to the maximum of 40 secs. In reality, most machines will keep the factory setting of 25 seconds, but every installation can be different depending on supply pressure variations. Therefore, the timing chart is a guide. Fig. 7.3.4 shows the fill POT time set for 40 seconds. Consequently, the fill valve opens at 110 seconds and closes at 140 secs into the total cycle. In this example, with the Dispensing POT set at maximum, the pump would start at 129 seconds into the cycle and shutoff at 140 seconds. The cycle times would be different if the fill POT were set for 25 seconds. Models UH-200B, UH-200 also may have variations in fill time because the water level probe controls initial fill time. But, the time that the fill/rinse valve is open during the final rinse portion of the automatic cycle is fixed at 11 seconds.

UH-100B

UH-100 UL-100

{

11 sec.

UH-200B

UH-200

0 10 2030405060708090

Fill/Rinse Valve

{

Example: Set to 11 sec.

0 10 2030405060708090

0 10 2030405060708090100110 130 140 150 155120

Fill/Rinse Valve

0 10 2030405060708090100110 130 140 150 155120

Rinse Aid Pump and/or Sanitizer Pump

1 sec. min.

Figure 7.3.4

Rinse Aid and Sanitizer Pump Adjustment

Rinse aid Pump

2 to 40 sec.

Example: Set to 11 sec.

Example:

Set to 11 sec.

30 sec. max

1 sec. min.

Fill/rinse valve closes = Reference point for pump run time

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Page 82

Part 7: SOLID STATE CIRCUIT BOARDS

Door safety switch

7.4 Circuit Board Test Points and Connectors

General Notes:

Sections 7.4.1 through 7.4.3 describe the location of harness connections to the solid state circuit boards. The inputs/outputs to peripheral components are noted on the diagrams where applicable.

WARNING:

Use extreme caution when testing energized electrical circuits.

CAUTION:

Do not attempt to test individual solid state components on the circuit boards.

NOTE:

There are no voltage tests required on the circuit board components. Some components on the board may be damaged by an ohmmeter. Technicians are only authorized to test the points described in the instructions below.

!! ATTENTION !!

The dishwasher will not operate when the control cabinet is pulled out!!

The magnetic reed door safety switch is not aligned with the door magnet when the control cabinet is pulled out for service. In order to operate the dishwasher, the door safety switch will need to be bypassed temporarily to perform some service checks.

WARNING:

Make sure door is fully closed before bypassing the door safety switch. Remove bypass when service is complete.

Place a magnet on or adjacent to the door safety switch to operate the switch and perform service checks.

Remove magnet when service checks are complete.

Door safety switch

(Left side of control cabinet)

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Page 83

Part 7: SOLID STATE CIRCUIT BOARDS

7.4 Circuit Board Test Points and Connectors

Tools:

The following tools are required to perform checks on the circuit boards:

• Standard set of hand tools

• Volt/Ohm meter (VOM) Sensitivity: 20,000 ohms/volt

Special Tools:

The following special tools are recommended:

• Magnet, P/N 111026, door magnet (Available from Champion), or comparable

• Touchpad/Display, P/N 112621 (Available from Champion)

• Jumper wire with miniature alligator clips to check water level probe (Supplied by others)

Connecting the VOM for Voltage Checks:

Refer to the illustration at right and follow the instructions below to make voltage tests on the circuit boards.

1. Molex harness connectors must be

plugged-in to the male connector on the board for voltage checks.

2. Input and output AC voltages are approximately 120VAC.

3. Connect one VOM lead to chassis ground.

4. Carefully insert the other VOM lead into the wire end of the connector until it contacts the metal pin in the molex connector.

5. The exposed pins on the male portion of the connector are insulated with a protective coating. Do not attempt to scrape the coating off the pins.

(VOM)

Chassis Ground

Molex Harness Connector

Connecting the VOM for Voltage Checks

Protective Coating Insulates Pins

BEFORE YOU BEGIN TESTING A CIRCUIT:

DON’T FORGET !!

If the dishwasher POWER pushbutton is pressed when the machine is ON, the dishwasher will automatically enter the auto-shutdown mode.

If the main incoming power is interrupted while the dishwasher is powered ON from the POWER pushbutton, then, after the main incoming power is restored, the dishwasher will auto-fill when the POWER pushbutton is pressed.

Refer to page 67, The Dishwasher Has Overfilled, if you encounter an overfilled condition during test procedures.

Refer to Section 7.3.2, page 63 and Section 7.3.4, page 65, for the description of LED status lights on the solid state circuit boards.

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Page 84

Part 7: SOLID STATE CIRCUIT BOARDS

7.4 Circuit Board Test Points and Connectors (Cont.)

7.4.1 Timer Control and Time Select (Fill/Chemical Dispenser) Board

Refer to Fig. 7.4.1 and the instructions on page 73.

From

Temperature/Display Board (T1)

(All Models)

Fused Hot

AC Neutral

T2 T1

To Door Switch

(Fill/Chemical Dispenser) Board

Common

Low Probe

CN7

Middle Probe

Limit Probe

(UH-200B, UH-200 Only)

Pin 1

To Time Select

JB1 JB2

To Temperature/Pressure Display Board (CN1)

CN3

CN1

JB3

CN2

Pin 1

Not connected

CN5

To Touchpad/Display Status LED's

CN4

Pin 1

Pin 10

Pin 9

To Touchpad/Display Pushbuttons

Wash Pump

Fill/Rinse Valve

Drain Pump/Valve

CN6

AC Hot Sanitizer Pump Rinse Aid Pump

Detergent Pump

NOTE:

Red stripe on cable indicates PIN 1 location.

Timer Control Board Connector Diagram

To CN1 on Timer Control Board

Pin 1

010

FILL DETERGENT SANITIZER RINSE

Time Select (Fill/Chemical Dispenser) Board

010

Connector Diagram

Figure 7.4.1

Timer Control and Time Select Connector Diagrams

010

Pin 1

010

AID

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Page 85

Part 7: SOLID STATE CIRCUIT BOARDS

7.4.1 Timer Control and Time Select (Fill/Chemical Dispenser) Board Connector Descriptions

Refer to Fig. 7.4.1 on page 72 and the test point descriptions below.

Timer Control Board Connectors:

CN1 — 10 pin connector accepts the cable from the Time Select Board.

There are no test points on CN1.

CN2 — 8 pin connector accepts the touchpad display cable.

Refer to Section 7.4.3, page 76, for test points.

CN3 — 10 pin connector hard-wired to the circuit board.

There are no test points on CN3.

CN4 — 4 pin connector accepts the status LED cable from the touchpad/display.

There are no test points on CN4.

CN5 — 4 pin connector accepts the wiring harness connector.

120VAC test points for:

• Wash pump output

• Fill/Rinse valve

• Drain pump and drain valve

CN6 — 4 pin connector accepts the wiring harness connector.

120VAC test points for:

• AC Power input to the Timer Control Board

• Sanitizer pump output

• Rinse aid pump output

• Detergent pump output

CN7 — 4 pin connector accepts the wiring harness connector. (UH-200B, UH-200 only)

Remove harness connector and connect jumper between Common and LOW, MIDDLE, or LIMIT pin on circuit board to to check water level LED’s. Associated LED should illuminate on board when pins are jumped.

T1,T2— Spade terminals on board.

120VAC test points for power input

• T1 accepts AC Hot harness wire from Temperature/Pressure Display Board to power water level control transformer (UH-200B, UH-200 Only) and the wash pump, fill/rinse valve, and drain pump/drain valve (All Models).

• T2 accepts AC neutral harness wire (All models)

T3,T4— Spade terminals on board accept wires from door safety switch.

Time Select (Fill/Chemical Dispenser) Board Connectors:

CN1 — 10 pin cable to the Timer Control Board. Connector hard-wired to board.

There are no test points on CN1.

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Page 86

Part 7: SOLID STATE CIRCUIT BOARDS

7.4 Circuit Board Test Points and Connectors (Cont.)

7.4.2 Temperature/Pressure Display Board

Refer to Fig. 7.4.2 and the instructions on page 75.

Input Power

HotNeutral

To Pressure

Transducer

ToTouchpad/Display (Wash/Rinse LED's) (UH-200B, UH-200 Only)

Wash Tank

Final Rinse Thermistor

Wash Tank Thermistor

Booster Tank Thermistor

CN3 CN4

CN2

Pin 9

Pin 10

Pin 1

JB7 JB1 JB2 JB3 JB4 JB5 JB6

CN1

To Timer Control Board (CN3)

Pin 1

CN5

Temperature Display (All Models)

Heat Contactor

Not connected

Pin 1

Booster Tank

Heat Contactor

Fuse

Fused Hot

2A 250VAC

To Fused Hot (T1) on Timer Control Board (UH-200B, UH-200 Only)

Pressure Display (UH-200B, UH-200 Only)

NOTE:

Red stripe on cable indicates PIN 1 location.

Figure 7.4.2

Temperature/Display Board Connector Diagram

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Page 87

Part 7: SOLID STATE CIRCUIT BOARDS

7.4.2 Temperature/Pressure Display Board

Refer to Fig. 7.4.2 and the instructions on page 75 and the test point descriptions below.

Temperature/Pressure Display Board Connectors:

CN1 — 10 pin connector accepts the cable from the Timer Control Board.

There are no test points on CN1.

CN2 — 4 pin connector accepts the cable from the pressure transducer

(UH-200B, UH-200 only). There are no test points on CN2.

CN3 — 6 pin connector accepts the wiring harness connector.

Connector contains inputs from the thermistor probes. Disconnect the connector from the board and check thermistor wires with VOM set to Ohms. Compare with actual temperature of water.

Thermistor Resistance Chart (Approx. Ohms)

80°F/27°C = 9,165 90°F/32°C = 7,400 100°F/38°C = 5,775 110°F/43°C = 4,725 120°F/49°C = 3,740 130°F/55°C = 2,985 140°F/60°C = 2,490

150°F/66°C = 2,010 160°F/71°C = 1,690 170°F/77°C = 1,385 180°F/82°C = 1,180 190°F/88°C= 975 200°F/93°C= 840 210°F/99°C= 870

CN4 — 4 pin connector accepts the wiring harness connector.

120VAC test points for:

• Wash tank heat contactor output

• Booster tank heat contactor output

CN5 — 3 pin connector accepts the W/R LED cable from the touchpad/display

on models UH-200B, UH-200 only. All other models must have a jumper on CN5. There are no test points on CN5.

T1,T2— Spade terminals on board.

120VAC test points for power input

• T1 accepts AC Neutral harness wire

• T2 accepts AC Hot harness wire (All models)

T3— Spade terminal on board accepts wire from Fused Hot T1 terminal on Timer Control

(UH-200B, UH-200 only). 120VAC test point for fused hot.

FUSE— 2 amp fuse to protect 120VAC power output to T1 terminal on Timer Control Board.

This power output is used for the water level control transformer located on the Timer Control Board on models UH-200B, UH-200 only.

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Page 88

Part 7: SOLID STATE CIRCUIT BOARDS

Pin 1

Common for (

Power, Start, Ext. Wash)

Rinse aid Prime

(UL-100)

Optional Prime (UH-200, UH-100 series)

Sanitizer Prime (UL-100)

Detergent Prime (UL-100)

Extended Wash

Start

Power

Common for Prime Pushbuttons

Power Start

Touchpad Cable Detail

Touchpad Cable Connector End

Status LED cable

to CN4 on Timer

Control Bd.

Touchpad pushbutton cable

to CN2 on Timer Control Bd.

Extended

Wash

Sanitizer Rinse Aid

Detergent

Prime for

Optional

Detergent and Rinse Aid

(UH-200B, UH-200, UH-100B, UH-100)

Prime for (UL-100 Only)

Pin 1

Wash/Rinse LED cable

to CN5 on Temperature/Pressure

Display Bd. (UH-200B, UH-200 Only)

7.4 Circuit Board Test Points and Connectors (Cont.)

7.4.3 Touchpad/Display

Refer to Fig. 7.4.2 and the instructions on page 77.

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Touchpad/Display Connector Diagram

Figure 7.4.3

Page 89

Part 7: SOLID STATE CIRCUIT BOARDS

7.4.3 Touchpad/Display

Refer to Fig. 7.4.2 and the instructions on page 76 and the test point descriptions below.

Touchpad Display Connectors:

Status LED — 4 pin cable connects to CN4 on the Timer Control Board. Cable LED’s are: Power, Start, and Extended Wash

There are no test points on the cable

Wash/ 3 pin cable connects to CN5 on the Temperature/Pressure Display Board. Rinse LED’s are: Wash and Rinse (For Models UH-200B, UH-200 only) LED — There are no test points on the cable. Cable

Touchpad Pushbutton Cable —

8 pin cable connects to CN2 on the Timer Control Board.

To test the pushbuttons:

1. Disconnect the cable from CN2 on the timer board.

2. Gently fold the cable connector back to reveal the contacts on the backside of the connector.

3. Make sure the cable is oriented to match the detail in Fig. 7.4.3.

4. Connect the VOM and press the pushbutton to check for continuity.

NOTE:

Fig. 7.4.3 shows the prime pushbuttons for all models. In reality, there are three separate touchpad/display assemblies.

Models UH-200B, UH-200 are the only models with the Wash/Rinse LED cable. These models have one prime pushbutton which operates both optional detergent and rinse aid pumps simultaneously.

Models UH-100B, UH-100 have one prime pushbutton which operates both optional detergent and rinse aid pumps simultaneously.

Model UL-100 has three prime pushbuttons which operate the standard detergent, sanitizer, and rinse aid pumps separately.

NOTE:

There are NO hidden pushbuttons on the touchpad/display.

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Page 90

Part 7: SOLID STATE CIRCUIT BOARDS

7.5 Circuit Board Removal and Replacement

General Notes:

The circuit boards should always be handled with care. Keep the board it its packaging until it is time for installation. Do not place the board on metal surfaces. The boards have a protective coating that resists electrostatic discharge (ESD) but it is good practice to touch a metal surface with your hand to discharge any static built up on your body before handling a board. Handle the circuit board by its edges whenever possible. Take care when using tools near the board.

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

CAUTION:

Discharge static build-up on your body by touching a metal surface before handling a circuit board to protect the board from electrostatic discharge (ESD).

NOTE:

Program jumpers should be checked and set to match the model and function of the dishwasher being repaired before the board is installed. Refer to Section 7.3, pages 62-65.

7.5.1 Timer Control Board Removal

Refer to the pictures and instructions given below.

To remove the timer control board:

Check and set the program jumpers before you install a replacement board.

1. Turn power off at the dishwasher and the main power disconnect switch.

2. Open the front door.

3. Remove screws located in each corner of the hood.

4. Pull the slide-out control cabinet out fully.

5. Fold back the protective mylar drip shield.

6. Note location, then carefully disconnect display cables and connectors.

7. Remove 6-32 grip nuts retaining the board.

8. Lift the board up and off the mounting studs.

9. Replace the board in reverse order.

NOTE:

Plug-ins on circuit boards are marked with a number “1”. This marking corresponds with a red line on the connector cable.

Make sure the “1” and the red line match when reconnecting a cable to the circuit board.

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Match No. 1 on plug to red line on cable

Page 91

Part 7: SOLID STATE CIRCUIT BOARDS

7.5.1 Timer Control Board Removal (Cont.)

Disconnect touchpad/display

Disconnect interconnect cables

cables

Handle the circuit board by

its edges.

Observe caution when

using tools near circuit board

Remove 6-32 retaining nuts

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Page 92

Part 7: SOLID STATE CIRCUIT BOARDS

7.5 Circuit Board Removal and Replacement (Cont.)

Refer to the General Notes on page 70 before proceeding with the instructions below.

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

7.5.2 Temperature/Pressure Display Board Removal

Refer to the pictures and instructions given below.

To remove the Temperature/Pressure Display Board:

Check and set the program jumpers before you install a replacement board.

1. Turn power off at the dishwasher and the main power disconnect switch.

2. Open the front door.

3. Remove screws located in each corner of the hood.

4. Pull the slide-out control cabinet out fully.

5. Fold back the protective mylar drip shield.

6. Note location, then carefully disconnect display cables and connectors.

7. Remove 6-32 grip nuts retaining the board.

8. Lift the board up at the rear at a slight angle and off the rear mounting studs.

9. Carefully lift the front of the board off the studs and guide the board back and out until the LED’s clear the control cabinet.

10. Replace the board in reverse order.

11. Make sure the display LED’s are centered in the control cabinet windows.

NOTE:

Plug-ins on circuit boards are marked with a number “1”. This marking corresponds with a red line on the connector cable.

Make sure the “1” and the red line match when reconnecting a cable to the circuit board.

Match No. 1 on plug to red line on cable

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Page 93

Part 7: SOLID STATE CIRCUIT BOARDS

7.5.2 Temperature/Pressure Display Board Removal (Cont.)

Remove 6-32 retaining nuts

Observe caution when

using tools near circuit board

Handle the circuit board by

its edges.

When reinstalling the board,

make sure the LED’s

are centered in the

control cabinet windows.

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Page 94

Part 7: SOLID STATE CIRCUIT BOARDS

7.5 Circuit Board Removal and Replacement (Cont.)

Refer to the General Notes on page 70 before proceeding with the instructions below.

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

7.5.3 Touchpad/Display Removal and Replacement

Refer to the pictures and instructions given below.

Special Tools Required:

• Sharp knife

• Acetone based cleaning fluid

• Scotch Brand® (or comparable) transparent tape

To remove the Touchpad/Display:

1. Turn power off at the dishwasher and the main power disconnect switch.

2. Open the front door.

3. Remove screws located in each corner of the hood.

4. Pull the slide-out control cabinet out fully.

5. Fold back the protective mylar drip shield.

6. Note location, then carefully disconnect display cables on the timer control board. The UH-200B, UH-200 has an additional cable connection on the temperature/pressure display board.

7. Use a sharp knife to separate the touchpad/display from the front of the control cabinet.

8. Scrape excess adhesive from the control cabinet face, then use a soft rag and an acetone based solvent to remove any remaining adhesive.

AVOID GETTING ACETONE ON THE DISPLAY PLASTIC.

To replace the Touchpad/Display:

1. Remove the touchpad/display from its packaging.

2. Notice the protective film on the red display windows.

3. Apply a small piece of tape on one corner of the protective film. Lift the tape off quickly to pull the film off the red display window.

4. Peel the protective film off completely.

5. Carefully thread the display cables through the holes in the control cabinet.

6. Place the touchpad/display on top of the cabinet, adhesive backing facing up.

7. Remove the adhesive backing and carefully apply the display to the cabinet.

8. Go slowly, the adhesive is very strong and will adhere on contact.

9. Make sure the red windows are centered on the LED cutouts and apply even pressure on the touchpad/display to complete the installation.

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Page 95

Part 7: SOLID STATE CIRCUIT BOARDS

7.4.3 Touchpad/Display Removal and Replacement (Cont.)

TEMPERATURE TEMPERATURE

Apply small piece of tape to corner

of protective film and

quickly remove tape

Pull protective film off display window

Disconnect display cables

Separate touchpad/display

from control cabinet

(Continued next page)

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Page 96

Part 7: SOLID STATE CIRCUIT BOARDS

7.5 Circuit Board Removal and Replacement (Cont.)

7.5.3 Touchpad/Display Removal and Replacement (Cont.)

Carefully thread display cables

through holes

in control cabinet front

Scrape off adhesive with knife and

remove remaining adhesive with acetone based solvent

AVOID GETTING ACETONE ON THE

DISPLAY!

Carefully align touchpad/display

and

apply to control cabinet front

Lay touchpad/display on top

of control cabinet:

adhesive side up.

Remove adhesive backing

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Page 97

Part 7: SOLID STATE CIRCUIT BOARDS

7.5 Circuit Board Removal and Replacement (Cont.)

Refer to the General Notes on page 70 before proceeding with the instructions below.

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

7.5.4 Time Select (Fill/Chemical Dispenser) Board Removal and Replacement

Refer to the pictures and instructions given below.

To remove the Fill/Chemical Dispenser board:

Check the POT settings on the defective board. Turn the POTS on the replacement board to match before installing the new board.

1. Turn power off at the dishwasher and the main power disconnect switch.

2. Open the front door.

3. Remove screws located in each corner of the hood.

4. Pull the slide-out control cabinet out fully.

5. Fold back the protective mylar drip shield.

6. Note location, then carefully disconnect the dispenser cable from the timer control board.

7. Remove the 6-32 retaining nuts.

8. Lift the board up and off the retaining studs.

9. Reinstall the replacement board in reverse order.

NOTE:

Plug-ins on circuit boards are marked with a number “1”. This marking corresponds with a red line on the connector cable.

Make sure the “1” and the red line match when reconnecting a cable to the circuit board.

Set POTS on replacement board

to match old board before

installing the replacement.

Match No. 1 on plug to red line on cable

010

FILL DETERGENT SANITIZER RINSE

010

AID

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Page 98

Part 8: COMPONENT REPAIR AND REPLACEMENT

This Page

Intentionally

Left

Blank

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Page 99

Part 8: COMPONENT REPAIR AND REPLACEMENT

PART 8: COMPONENT REPAIR AND

REPLACEMENT

8.1 Introduction

In This Part—

• Special Tools and Materials

• Electrical Component Locator Diagram

• Troubleshooting the 10-point Terminal Board

• Component Repair and Replacement Procedures

The instructions contained in Part 8 are intended for Champion authorized technicians and should not be used by untrained personnel. Persons not properly trained should not attempt to repair or make adjustments to the dishwasher. The instructions do not cover every possible trouble condition or repair procedure. The Champion authorized service technician should rely on experience, factory seminars and consultation with the Champion National Service Department for conditions not covered in this manual

The following warnings apply to the procedures contained in Part 8.

WARNING:

Machine surfaces are hot during and after normal operation.

WARNING:

When working on the dishwasher, disconnect the electrical service and place a red tag at the disconnect switch to indicate work is being done on that circuit.

WARNING:

Use extreme caution when testing circuits while power is applied to the machine.

8.1.1 Special Tools and Materials

Tools:

Metric fasteners are used in the wash pump assembly and the wash arm supports.

• Standard set of metric tools

Materials:

The following solvents, sealants, and pipe compounds are required for repairs.

• Pipe sealant (Loctite® 565 or comparable) Champion P/N 106437

• Silicon sealant (732 RTV or comparable) Champion P/N 104827

• Thread sealing teflon tape, Champion P/N 106436

• Plumber’s putty (Compound 440 or comparable) Champion P/N 104889

• Heat Sink Compound (used on high limit thermostat) Champion P/N 110563

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Page 100

Part 8: COMPONENT REPAIR AND REPLACEMENT

8.1 Introduction (Cont.)

8.1.2 Electrical Component Locator Diagram

The combined illustration below shows the major electrical components (except chemical pumps) for models UH-200B, UH-200, UH-100B, UH-100, and UL-100 dishwashers.

Pressure Transducer (UH-200 series)

Vacuum Breaker (UH-200 series)

Fill Chute (UH-100 series & UL-100)

Wash Tank Heater Element (except UL-100)

Final Rinse Thermistor (UH-200 series)

Final Rinse Manifold (UH-200 series)

Door Safety Magnetic Reed Switch

Wash Pump

Drain Pump

Final Rinse Thermistor (UH-100 series)

Booster Tank

(UH-200B UH-100B)

Water Level Probe (UH-200 series)

Booster Tank Hi limit

Booster Tank Thermistor

Wash Tank Hi limit

Wash Tank Thermistor

Fill/Rinse Solenoid Valve

Drain Valve

Wash Pump Contactor

Main Power Terminal Block

Booster Tank Heater Contactor

Installation/Service Switch (UH-200B, UH-100B)

Wash Tank Heater Contactor

I G

A L

N L

2 0

V D E

E R

T R I

N S

D S A

N I

T I

Z E

M O

10 Point Terminal Block

Circuit Breaker

Figure 8.1.1

Electrical Component Locator Diagram

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Champion UH-100 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual