Cleaning the regeneration filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Cleaning the aftercooler/intercooler coils . . . . . . . . . . . . . . . . . . . . 5-9
Cleaning the precooler coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Cleaning the volatile trap on the demister . . . . . . . . . . . . . . . . . . . 5-11
Inspecting hoses and gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
6-1 Troubleshooting
Before beginning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
A few words of caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
DIAGNOSTICS
How to identify the cause of a problem . . . . . . . . . . . . . . . . . . . . . 6-4
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Dewpoint troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
Poor material drying troubleshooting. . . . . . . . . . . . . . . . . . . . . . . 6-18
REPAIR
Replacing fuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
Checking heater solid state relays. . . . . . . . . . . . . . . . . . . . . . . . . 6-24
Checking or replacing temperature sensors . . . . . . . . . . . . . . . . . 6-25
Replacing the regeneration heater (W600-1000). . . . . . . . . . . . . . 6-26
Replacing the regeneration heater (W1600-2400). . . . . . . . . . . . . 6-28
Replacing the regeneration heater (W3200-5000). . . . . . . . . . . . . 6-30
Replacing the desiccant wheel assembly (W600-1000). . . . . . . . . 6-32
Replacing the desiccant wheel motor (W600-1000) . . . . . . . . . . . 6-34
Replacing the desiccant wheel motor (W1600-5000) . . . . . . . . . . 6-35
Table of Contents l iii
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