-
On water-cooled compressors, drain valves, shut-off valves and a regulating valve should be fitted by
the customer in the cooling water piping.
-
Check the oil level.
The pointer of level gauge (Gl) should register in the upper field of the green range or in the orange
range.
-
Provide labels, warning the operator that:
•
The compressor may automatically restart after voltage failure (if activated, consult Atlas
Copco).
•
The compressor is automatically controlled and may be restarted automatically.
•
The compressor may be remotely controlled.
-
On water-cooled compressors, close the cooling water drain valves. Open the cooling water inlet valve
and the regulation valve.
-
Switch on the voltage. Start the compressor and stop it immediately.
On air-cooled compressors, check the rotation direction of the fan motor. Rotation arrows, visible
through the grating in the roof, are provided on the fan plate. If the rotation direction is wrong, open the
isolating switch in the voltage supply line and reverse two incoming electric lines.
-
Check the programmed settings. Consult section
.
-
Start and run the compressor for a few minutes. Check that the compressor operates normally.
7.3
Before starting
Remarks
•
If the compressor has not run for the past 6 months, it is strongly recommended
to improve the lubrication of the compressor element at starting.
•
Loosen the hose clip (3) and disconnect inlet hose (2).
•
On GA 75 VSD and GA 90 VSD, lift inlet hose (2), open check valve (CV)
and pour 0.75 l (0.20 US gal, 0.17 Imp gal) of oil into the compressor
element.
•
Reinstall inlet hose (2).
•
On Full-Feature compressors, switch on the voltage 4 hours before starting to
energize the crankcase heater of the refrigerant compressor of the dryer.
Instruction book
2920 1634 04
81
