Sullair SD-1050 Series, Руководство пользователя

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USER MANUAL
Models SD-820 to SD-1710 with DDS
Rev 04 – October 2005
21
6. FAULTS AND TROUBLESHOOTING
6.1 DEW POINT TOO HIGH
POSSIBLE CAUSE SOLUTION
Operating pressure too low, air flow
volume too high Increase operating pressure, reduce air flow
capacity
Air inlet temperature too high
Reduce temperature or install an air cooler
upstream
Differential pressure at the prefilter is
too high
Replace the filter element
Condensate drain is not functioning
Check operation of the condensate drain
and replace if necessary
Desiccant is soiled or has disintegrated
Replace the prefilter element and the
desiccant. Dispose of the old desiccant
Danger!

Wear protective equipment and clothing when handling desiccant
Volume of regeneration gas too low
Check regeneration orifice for soiling, clean
if necessary; check operation of muffler and
depressurization
valve, replace if
necessary.
Back pressure in regenerating vessel
Check if mufflers are clogged or if there is a
valve leak.
6.2 TOWERS DO NOT SWITCH OVER
POSSIBLE CAUSE SOLUTION
Chamber pressure switch contact is
defective Verify switch contact and replace if
necessary.
Chamber pressure below pressure
switch settings
Set switch 30 PSIG below normal operating
pressure.
Exhaust valve not fully closed
Verify valve for obstruction. Verify pilot air to
exhaust valve is removed during the repress
stage.
Solenoid valve leaks
Verify for air leakage on non-activated
solenoid.
Purge isolation valves partially open or
closed Purge isolation valves (2) are to be fully open
at all times
Inlet valve failed to operate position
Verify there is pilot air to inlet valve actuator.
Verify solenoid valve operation.