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7 COMPONENT REPAIR AND REPLACEMENT ......................................................7-1
7.1 General Description ............................................................................................................................... 7-1
7.2 Door(s) ................................................................................................................................................... 7-1
7.2.1 How to Replace Door Gasket ......................................................................................................... 7-1
7.2.2 How to Replace and Adjust Microswitch ....................................................................................... 7-1
7.2.3 Window and Window Gasket Replacement ................................................................................... 7-2
7.3 How to Replace Interior Light Lamp ...................................................................................................... 7-2
7.4 Chemical Injection Pump ....................................................................................................................... 7-3
7.4.1 Squeeze Tube Replacement .......................................................................................................... 7-3
7.4.2 Chemical Injection Pump Motor Replacement ............................................................................... 7-3
7.5 Carriage Drive ....................................................................................................................................... 7-4
7.5.1 Adjusting Carriage Drive Clutch .................................................................................................... 7-4
7.5.2 Adjusting Carriage Drive Cable ..................................................................................................... 7-5
7.5.3 Replacing Carriage Drive Cable .................................................................................................... 7-5
7.6 Pump Motor ........................................................................................................................................... 7-7
7.7 Verify Safety Cable Tension ................................................................................................................... 7-7
7.8 Quick-Disconnect Pneumatic Fittings ................................................................................................... 7-7
7.9 Thermostatic Steam Trap Replacement ................................................................................................ 7-7
7.10 Heat Exchanger Control Adjustments ................................................................................................. 7-7
7.11 How to Replace pH Controller ............................................................................................................. 7-8
7.12 How to Calibrate Controller Output Signals ......................................................................................... 7-8
7.12.1 Conductivity (Channel A) ............................................................................................................. 7-8
7.12.2 pH (Channel B) Only for Units with pH Option ........................................................................... 7-10
7.13 How to Adjust pH Controller .............................................................................................................. 7-11
7.13.1 Reset Control .............................................................................................................................. 7-11
7.13.2 Frequency Adjustment ............................................................................................................... 7-11
7.13.3 Measure Units Adjustment ......................................................................................................... 7-11
7.13.4 Analog Output Adjustment ......................................................................................................... 7-11
7.13.5 Thornton Display Adjustment ..................................................................................................... 7-12
7.14 How to Replace pH Sensor (pH Neutralizing System Option) .......................................................... 7-12
7.15 RTD Replacement ............................................................................................................................. 7-12
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