Quincy Compressor QOF 20 - Section VIII - Problem solving; Compressor

Section VIII - Problem solving
Quincy Compressor 89
NOTICE!
Before carrying out any maintenance or repair, perform following steps:
• Stop the compressor and switch off the voltage.
• Open and lock the isolating switch to prevent an accidental start.
• Isolate the compressor by closing the outlet valve.
• Depressurize the system by opening the drain valve(s).
Compressor
Condition Fault Remedy
Thecompressor
does not start.
Pressuretoohigh.
Compressor will start again
when the pressure drops to the
starting pressure.
Loose connection.
Checkallelectricalconnections.
Safety valve blows.
Pressuretoohigh Checksettingsandcorrect.
Safety valve opens too soon. Replace valve.
Compressor
capacity or pressure
below normal.
Airconsumptionexceeds
capacity of compressor.
Checkequipmentconnected.
Chokedairinletlter.
Removeandchecklter.Replace
if necessary.
Safetyvalveleaking. Replace valve.
Compressor element out of
order.
Consult your supplier.
Compressor
module overheating
or compressor
shutdown on high
air temperature.
Insufcientcompressor
cooling.
Improveventilationof
compressor room. Clean
compressor element fins
and fan, see Cleaning the
compressor element.
Cooling fan out of order.
Checkandcorrect.
Condensate trap
continuously
discharging air an
water
Automaticdrainoutoforder
Havethedrainchecked.Replace
as necessary
Refrigerant dryer
Forcompressorswithabuilt-inrefrigerantdryeralso: