Atlas Copco GA30C Instruction Book

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Instruction book
6 Problem solving
If alarm LED (7-Fig. 3.5) is alight or blinks, consult the User
manual, Part 2, sections 5 and 15.
If alarm LED (8-Fig. 3.7) is alight or blinks, consult the User
manual, Part 1, sections 4 up to 7.
Attention
Apply all relevant safety precautions, including those mentioned
in this book.
Before starting any maintenance or repairs:
1. For GA Workplace/Workplace FF, press stop button (1-
Fig. 3.5), wait until the compressor has stopped (approx.
30 seconds), press emergency stop button (S3-Fig. 3.4) and
switch off the voltage.
For Pack/Pack FF, press stop button (1-Fig. 3.7), wait until
the compressor has stopped (approx. 30 seconds), press
emergency stop button (S3-Fig. 3.6) and switch off the
voltage.
2. Close air outlet valve (1-Figs. 3.4/3.6) and depressurize by
opening plug (5-Fig. 3.3) one turn and by opening valve (1-
Fig. 3.2) (not provided on GA Pack).
3. The air outlet valve (1-Figs. 3.4/3.6) can be locked during
maintenance or repair as follows:
- Close the valve.
- Remove the bolt fixing the handle.
- Lift the handle and turn it until the slot of the handle fits
over the blocking edge on the valve body.
- Lock the handle using the special bolt and wrench
delivered loose with the compressor.
Mechanical faults and suggested remedies
(Figs. 1.7 and 1.8)
1 Compressor starts running, but does not load after a
delay time
a Solenoid valve out of order
a Replace valve
b Inlet valve stuck in closed position
b Have valve checked
c Leak in control air flexibles
c Have leaking flexible replaced
d Minimum pressure valve leaking (when net is depressurized)
d Have valve checked
2 Compressor does not unload, safety valve blows
a Solenoid valve out of order
a See 1a
b Inlet valve (IV) does not close
b See 1b
3 Condensate is not discharged from condensate trap
during loading
a Discharge flexible clogged
a Check and correct as necessary
b Float valve malfunctioning
b Remove float valve assembly, clean and check
4 Compressor air output or pressure below normal
a Air consumption exceeds air output of compressor
a Check equipment connected
b Choked air inlet filter element
b Replace filter element
c Solenoid valve malfunctioning
c See 1a
d Leak in control air flexibles
d See 1c
e Inlet valve does not fully open
e See 1b
f Oil separator element clogged
f Have element replaced
g Air leakage
g See 1c
h Safety valve (SV) leaking
h Have valve replaced
i Compressor element (E) out of order
i Consult Atlas Copco
5 Excessive oil consumption; oil carry-over through
discharge line
a Oil level too high
a Check for overfilling. Release pressure and drain oil to
correct level
b Incorrect oil causing foam
b Change to correct oil
c Oil separator element defective
c Have element checked. Replace, if necessary.
6 Safety valve blows after loading
a Inlet valve malfunctioning
a See 1b
b Minimum pressure valve malfunctioning
b See 1d
c Safety valve out of order
c See 4h
d For units with dryer: dryer pipes clogged by formation of
ice
d Have refrigerant system checked. Consult Atlas Copco
7 Element outlet or air outlet temperature above normal
a Insufficient cooling air or cooling air temperature too high
a Check for cooling air restriction or improve ventilation of
compressor room. Avoid recirculation of cooling air. If
installed, check capacity of compressor room fan.
b Oil level too low
b Check and correct as necessary
c Oil cooler clogged
c Clean cooler
d By-pass valve malfunctioning
d Have valve tested
e Air cooler clogged
e Clean cooler
f Compressor element out of order
f See 4i

Atlas Copco GA30C Specifications

General

Brand	Atlas Copco
Model	GA30C
Category	Air Compressor
Language	English