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Cold Weather Package Option (Heat Tracing and PLC Panel Heater) or
Heat Tracing Option
Dryer may be equipped with options to keep sump tank condensate and PLC
components from damage by ambient temperatures below +32°F. It is imperative
that control power be applied at all times when cold conditions are present.
Sump tank has an indicator light that should be illuminated when power is present.
Electrical heat tracing is protected by a ground fault equipment protector (mounted in
High voltage panel) to minimize electrical shock and equipment damage. An ambient
temperature sensor prevents operation above 55°F degree operation.
A low voltage panel heater is mounted vertically along the left side interior of panel
and contains a hermetic thermostatic controlled switch to keep internal components
warm. A guard prevents accidental contact with heater surface. Care should be used
when working in proximity of heater.
XIII.
TROUBLESHOOTING
Symptom
No or Low heater outlet
temperature
Blower Overload alarm
Heater outlet
temperature high alarm
NG-SR IOM
Probable Cause
Fuses blown
Contactor not energized
Regeneration Cycle in
cooling
Heater failure
Too much flow
Overloads tripped
Contactor not energized
Blower mechanical problem
Regeneration pressure low
Contactor malfunction
Thermocouple problem
Blower failure
34
Remedy
Test and replace
Check voltage on coil. Replace
as required
Reset control by pressing and
hold for 5 seconds "ALARM
RESET" pushbutton. Then press
"REGEN START".
Check resistance and replace if
open.
Open blower bypass valve. adjust
as necessary to control flow.
Reset
Check voltage on coil. Replace
as required
Depressurize and remove blower
housing. Check blower freely
rotates
Raise to 10-15 PSIG
Check for welded together
contacts
Test and replace as needed.
Refer to symptom "Blower
overload alarm"
PSB INDUSTRIES
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