3.5 Stopping

To stop the compressor manually for short periods, the following procedure should be used:

A Flip the compressor’s manual unloader to the vertical position to unload the LP suction valve.

B Open the drain valves.

C Stop the compressor.

When stopping the compressor before prolonged downtime, use the following procedure:

A Drain old oil, clean the crankcase sump and fill with new oil.

B Apply a suitable corrosion inhibiting oil to the compressor valves, non-return valves, cylinder walls and

open surfaces of the crankshaft.

C If there is a danger of frost, drain the cooling water.

D Set the manual unloader in the horizontal position so that there is no load on the compressor’s suction

valve.

E Turn over the compressor by hand once a week.

F The starter panel and other electrical equipment must be similarly protected against corrosion damage.