Quincy Compressor QOF 2 User Manual

Section VII - Problem solving
34 Quincy Compressor
Attention
1. Beforecarryingoutanymaintenance,repairworkoradjustment,switchoffthe
voltage.
2. Openandlocktheisolatingswitchtopreventanaccidentalstart.
3. Isolatethecompressorbyclosingtheoutletvalve.
4. 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.
On/off switch (Q1)
malfunctioning or loose
connection
Have electrical connections
checked.
Testswitch.Replaceifnecessary.
Thermaloverloadofswitch(Q1) Restart after cooling down.
Switch(TSHH)openormotor
protectionrelay(F21)tripped
Wait for switch to cool down.
Replace switch if necessary.
Resetoverloadrelay(F21).
Airpressureswitch(PS)outof
order
Testswitch,replaceifnecessary.
Thecompressor
does not stop
and/or safety
valve blows.
Airpressureswitch(PS)opens
too late or not at all.
Readjust switch, replace if
necessary.
Safetyvalve(SV)openstoo
soon.
Have valve replaced.
Pressure
difference
between stopping
and starting
cannot be
adjusted
Airpressureswitch(PS)outof
order
Replace if necessary.
Compressor
capacity or
pressure below
normal
Airconsumptionexceeds
capacity of compressor.
Checkequipmentconnected.
Chokedairlter
Removeandchecklter.
Replace if necessary.
Safetyvalveleaking Replace valve.
Drivebeltsslipping.
Checkconditionofbeltsand
belt tension.
Correctorreplaceasrequired.
Compressor element out of
order
Consult the supplier.

Quincy Compressor QOF 2 Specifications

General

Brand	Quincy Compressor
Model	QOF 2
Category	Air Compressor
Language	English