Atlas Copco GA 15 Instruction Book page 126

- Consult the sections
- The following transport fixtures, painted red, must be removed:
• Bolts (1)
• Bushes (2)
- Check that the electrical connections correspond to the applicable codes and that all wires are clamped
tight to their terminals.
The installation must be earthed and protected against short circuits by fuses of the inert type in all
phases. An isolating switch must be installed near the compressor.
- Check transformer (T1) for correct connection.
For Full-Feature units except for voltages 230 V and 400 V + N: check transformer (T3) for correct
connection.
Check the settings of drive motor overload relay (F21).
Check that the motor overload relay is set for manual resetting.
- Fit air outlet valve (AV); see section
Close the valve.
Connect the air net to the valve.
On compressors equipped with a dryer bypass, fit the air outlet valve to the dryer bypass pipe.
- Connect the condensate drain outlet(s) to a drain collector.
See section
- For compressors with a DD or a DD and PD filter connect the automatic drain of the filters to a suitable
drain collector.
- Check the oil level. See section Oil and oil filter change.
- 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.
- Affix sheet (5) explaining the procedure for checking the motor rotation direction to the cooling air outlet
of the compressor. Consult section Dimension drawings.
Switch on the voltage. Start the compressor and stop it immediately. Check the rotation direction of
drive motor (M1) while the motor is coasting to a stop.
Check the motor rotation of the motor using sheet (5). If the motor rotation direction is correct, the label
on the top grating will be blown upwards. If the sheet remains in place, the rotation direction is incorrect.
If the rotation direction of the drive motor is incorrect, open the isolating switch and reverse two incoming
electric lines.
Optional phase sequence relay:
• If the compressor should fail to start, check the display.
• If the display shows the pictograph for motor overload, check the phase sequence relay.
Incorrect rotation direction of the drive motor may cause damage to the compressor.
- Check the programmed settings. On compressors equipped with an Elektronikon® controller, consult
section Programmable
- Start and run the compressor for a few minutes. Check that the compressor operates normally.
124
Location of the sheet
Electric cable size,Installation proposal
Condensate system.
settings.
Introduction for the location of the valve.
and Dimension drawings
Instruction book
2920 7083 31