Ingersoll Rand Compressor N75K Two Stage

Ensure compressor is electrically isolated for at least 15 minutes before commencing any maintenance work

Unclip the front grill of the drive box filter

Remove the filter pad from the housing and replace with a new filter pad from Ingersoll Rand

Replace front grill to the drive box filter

Disconnect tubing at each end of check valve/screen/orifice assembly

Orifice Inspection and Cleaning

Check orifice for cleanliness and condition

Use suitable tool to remove orifice from its housing

Ensure no damage to flared end of fitting or O-ring

Check coolant level in sight glass while machine is running on load

Is coolant visible in the sight glass while machine is running?

Stop the machine and ensure coolant is still visible in the sight glass

Run the compressor for a minimum of 40 seconds

Is coolant visible in the sight glass after running the compressor?

Stop the compressor and depressurize by isolating the compressor from the system

Check and replace air filter if needed

Scavenge screen - Check / clean

Inspect coolant hoses for brittleness or damage

Drain coolant into a clean container