Specifications

25
Non-CyclingRefrigeratedAirDryer
Problem Probable Cause Remedy
High refrigerant suction
pressure, suction gauge
reading out of range and
water downstream of
refrigeration dryer.
Refrigerationcircuit 
hot gas bypass valve out of
adjustment or defective.
Contact technical support for assistance.
Refrigerationexpansion
valve or TXV adjustment
fitting out of adjustment.
Contact technical support for assistance.
Low refrigerant suction
pressure, suction gauge
reading out of range and/
or refrigeration compressor
covered with ice.
Refrigerationcircuithot
gas bypass valve out of
adjustment or defective.
Contact technical support for assistance.
Refrigerationexpansion
valve or TXV adjustment
fitting out of adjustment
and is not feeding enough
refrigerant to the evaporator.
Contact technical support for assistance.
Excessivepressuredrop
on the high side of the
refrigeration circuit.
Checkforapluggedinlinefilterdryerorreceiver
on the refrigeration circuit that could be causing
these restrictions.
Compressor oil
downstream of
refrigerated air dryer.
Checkoptionalprefilter
condensate drain for
failure.
Dismantleprefilterdrainandcleanorreplace.
Failedorplugged 
prefilter element.
Checkoptionalprefilterandreplaceelement.
Air compressor injecting
excessiveoilintothe
airstream.
Checkaircompressorforoilleakintotheair
stream,checkairoilseparatorelementfor
failure.