Quincy QGS 10 Instruction Book page 82

Attention
Faults and remedies
For all references given hereafter, see
Condition
1 Compressor starts running, but
does not load after a delay time
2 Compressor air output or
pressure below normal
3 Air outlet temperature above
normal
80
Use only authorized parts. Any damage or malfunction caused by the use of
unauthorized parts is not covered by Warranty or Product Liability.
Apply all relevant Safety precautions during maintenance or
Before carrying out any maintenance or repair work on the compressor: push the stop
button (6).
Wait until the compressor has stopped and switch off the voltage. See the
section.
Open the isolating switch to prevent an accidental start.
Close air outlet valve (2) and depressurize the compressor by opening the oil filler plug
(3) one turn.
Open manual condensate drain valves (4 and/or 5).
The air outlet valve (2) can be locked during maintenance or repair as follows:
• Close the valve.
• Remove the screw fixing the handle.
• Remove the handle.
• Fit the screw.
Air flow
Fault
Solenoid valve (Y1) out of order
Inlet valve (IV) stuck in closed
position
Leak in control air pipes
Minimum pressure valve (Vp)
leaking (when net is
depressurised)
Air consumption exceeds air
output of compressor
Choked air inlet filter element
(AF)
Solenoid valve (Y1)
malfunctioning
Leak in control air pipes
Inlet valve (IV) does not fully
open
Oil separator (OS) clogged
Safety valves leaking
Insufficient cooling air or cooling
air temperature too high
Oil level too low
diagram, Initial start-up
Instruction book
repair.
Stopping
or Regulating system.
Remedy
Replace valve
Have valve checked
Replace leaking pipe
Have valve checked
Check equipment connected
Replace filter element
Replace valve
Replace leaking pipe
Have valve checked
Replace separator element
Replace valves
Check for cooling air restriction
or improve ventilation of
compressor room. Avoid
recirculation of cooling air. If
installed, check capacity of
compressor room fan
Check and correct as necessary
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