Ingersoll Rand Air Compressor R90IU-125

Airend bearings are lubricated by the compressor coolant and require no maintenance.

Clean the area around the inlet and outlet plugs before removing the plugs.

Add the specified quantity of recommended grease using a hand lever gun.

Replace the inlet plug, run the machine for 10 minutes and then replace the outlet plug.

Motor Bearings Lubricant Specifications

Use MOB SHC220 grease or equivalent.

CAUTION! Do not over pack the motor bearings with grease as this may lead to motor failure.

NOTE: On some sea water cooled models the oil cooler and after cooler are fitted with sacrificial zinc anodes (pencils) that are located in the end bonnets of the coolers. These sacrificial zinc anodes should be checked after the first 50 hours of operation to determine if corrosive conditions exist. If satisfactory this interval may be extended to 500 hours.

Is the sacrificial zinc anode less than 50% corroded?

Coastal/harbour waters can contain corrosive chemicals from pollution and may reduce anode/cooler life.

Effects of corrosion or erosion are specifically excluded from warranty considerations.

Sign off on the 500 Hourly Zinc Anode Check

Warning: This procedure requires trained personnel with PPE!

Scavenge tube disconnected from the airend?

Fitting that secures the scavenge tube to the separator tank cover loosened?

All piping disconnected from the separator tank cover?

Setscrews securing the cover to the tank removed?

Complete cover assembly removed?

Warning: Heavy cover- use lifting equipment.

Used element withdrawn and placed in a sealed bag?

Loosen filter element with the correct tool

Remove the element from the housing

Place the old element in a sealed bag and dispose of in a safe way

Clean the mating face of the housing

Remove the new Ingersoll Rand replacement element from its protective package

Apply a small amount of lubricant to the element seal

Screw the new element down until the seal makes contact with the housing, then hand tighten a further half turn

Start the compressor and check for leaks

Sign off on the coolant filter replacement

Take coolant sample for fluid analysis

Check scavenge screen for blockage, clean if required

Check the calibration of the pressure transducer

Sign off on the air compressor maintenance