TABLE OF CONTENTS
PART 7: SOLID STATE CIRCUIT BOARDS .................................................
61
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 .............................
87
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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