| VF, DHT, AES Series Manual
Refrigerated Air Dryer User Manual
34
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 tting 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 tting out of adjustment
and is not feeding enough refrigerant to
evaporator
Contact Technical Support for assistance
Excessive pressure drop on the high side
of the refrigeration circuit
Check for a plugged in-line lter dryer or receiver on
the refrigeration circuit that could be causing these
restrictions.
Compressor oil
downstream of
refrigerated air dryer
Check optional pre-lter condensate
drain for failure
Dismantle pre-lter drain and clean or replace
Failed or plugged lter element Check optional pre-lter and replace element
Air compressor injecting excessive oil
into the air stream
Check air compressor for oil leak into the air stream,
check air oil separator element for failure
7.7 AES Series Troubleshooting Guide
To Next Page
Loading...
