Atlas Copco GX 7 User Manual

Faults and remedies
For all references given hereafter, see Air flow diagram, Initial start-up or Regulating system.
For GX 7 and GX 11
Condition Fault Remedy
1 Compressor starts running, but
does not load after a delay time
Solenoid valve (Y1) out of
order
Replace valve
Inlet valve (IV) stuck in closed
position
Have valve checked
Leak in control air flexibles Replace leaking flexible
Minimum pressure valve (Vp)
leaking (when net is
depressurised)
Have valve checked
Timer out of order Replace timer
2 Compressor air output or
pressure below normal
Air consumption exceeds air
output of compressor
Check equipment connected
Choked air inlet filter element
(AF)
Replace filter element
Solenoid valve (Y1)
malfunctioning
Replace valve
Leak in control air flexibles Replace leaking flexible
Inlet valve (IV) does not fully
open
Have valve checked
Oil separator (OS) clogged Replace separator element
Safety valves leaking Replace valves
3 Air outlet temperature above
normal
Insufficient cooling air or
cooling air temperature too
high
Check for cooling air restriction or
improve ventilation of compressor
room. Avoid recirculation of cooling
air. If installed, check capacity of
compressor room fan
Oil level too low Check and correct as necessary
Cooler clogged Clean cooler
Temperature switch
malfunctioning
Have switch tested
Compressor element (E) out of
order
Consult Atlas Copco
GX 7 up to GX 11 with air cooler
Condition Fault Remedy
1 Condensate is not discharged
during loading
Discharge flexible clogged Check and correct as necessary
Float valve malfunctioning Remove float valve assembly, clean
or replace as necessary
Instruction book
2920 7054 00 63

Atlas Copco GX 7 Specifications

General

Brand	Atlas Copco
Model	GX 7
Category	Air Compressor
Language	English