Atlas Copco — Start-up
Installation · compressor installation
From a Atlas Copco operator's manual covering: GA 10 bar, GA 100 psi, GA 125 psi, GA 13 bar, GA 150 psi, GA 175 psi, GA 7.5-8 bar, GA 75, GA5, GA90. Check it applies to your exact model before use.
Applies to: Atlas Copco GA 75
Before you start
- Before carrying out any maintenance, repair or adjustment, stop the compressor, press emergency stop button (S3), switch off the voltage and depressurize the compressor.
Procedure
- Remove transport fixations (painted red): bushes (2) from both gear casing supports, bushes (5) from both air receiver supports, support (3).
- Check that electrical connections correspond to local codes and are tight; install earthing, short-circuit fuses in all phases and an isolating switch near the compressor.
- Check transformer (T1) connection, settings of overload relay (F21) and fan motor circuit breaker (Q15), and automatic resetting of (F21).
- Fit air outlet valve (AV), close it and connect the air net to the valve.
- Connect manual condensate drain valve (Dma), close it and connect it to a drain collector.
- Connect automatic condensate drain outlet (Daa) to the drain collector.
- Water-cooled: fit drain valves in water inlet and outlet pipes; provide and open the water inlet and regulating valve.
- Check oil level; pointer of level gauge (Gl) must register in the green or orange range; top up with Roto-injectfluid if needed.
- Stick the automatic restart and automatic control warning labels on an obvious place near the control panel.
- Switch on voltage, start and stop the compressor immediately; check rotation direction of drive motor (M1), then fan motor (M2); reverse two incoming lines if wrong.
- Check the programmed settings.
- Start and run the compressor for a few minutes; check that it operates normally.
Source: Atlas Copco operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.