Atlas Copco GA 160 VSD

Step Action
1 Close the drain valves (see the section Cooling and condensate system).
2 Switch on the voltage.
3 Start the compressor and stop it immediately. Check the rotation direction of the drive
motor while the motor is coasting to a stop. To determine the rotation direction of the motor,
look at the fan through the grating at the non-drive end of the motor. The correct rotation
direction is indicated by an arrow on the gear casing and on the fan cowl.
On air-cooled compressors, check the rotation direction of the fan motor, the fan is visible
through the grating in the air inlet panel (see section Dimension drawing). The correct
rotation direction is indicated by arrows on the fan inlet plate.
On Full-Feature compressors, open the door of the dryer compartment and check the
rotation direction of the fan motors of the condenser. The correct rotation direction is
indicated by an arrow.
4 If the rotation direction is wrong, press the emergency stop button, switch off the voltage
and reverse two incoming electric lines.
If the rotation direction of the fan motor is wrong, consult your Atlas Copco customer centre.
5 Run the compressor for a few minutes and check that it is operating normally.
5.2 Before starting
Warning
Step Action
The operator must apply all relevant safety precautions. See the section Safety
precautions.
If the water system was drained (see the section Stopping), close the drain valves.
Switch off your mobile phone when in the vicinity of a GA VSD compressor which is under
tension.
Procedure
Step Action
- Switch on the voltage. The voltage-on LED lights up.
- Close condensate drain valves.
Full-Feature compressors have two condensate traps and two drain valves.
- Open the air outlet valve.
- Check the oil level. The pointer of the oil level gauge should be in the green range or orange
range.
If the compressor has only just stopped, wait one minute before checking the level.
- On Full-Feature compressors, make sure that the dryer shut-off valves are open and that
the dryer by-pass valve is closed (customer’s installation).
- On water-cooled compressors, open the water shut-off valves (customer's installation) and
regulating valve (located inside the compressor next to the oil/water coolers) and check
for water flow.
Instruction book
118 2920 1728 05