10.0 MAINTENANCE
Watercooled machines
Shut off the cooling water.
The machine should trip at 109° C (228° F).
caution
Under no circumstances should these discharge temperatures be exceeded. If the machine fails to trip A FAULT EXISTS. Investigate immediately.
Separator tank scavenge check valve/orifice
•Disconnect tubing at each end of check valve/ screen/ orifice assembly.
•Check orifice and clean if required. Use suitable tool and remove orifice from its housing. Be careful not to damage flared end of fitting or O−ring.Wash housing in safety solvent and blow dry.
•Press the check valve/orifice into fitting block.
•Assemble the check valve/orifice assembly to the
tubing lines.The fitting must be re−installed with the check valve on the upstream side of the orifice as indicated by the flow arrow.
Blower / fan Motor Bearing Maintenance (Stored units)
•Prior to placing a unit in storage for extended intervals, rotate the blower motor several revolutions by hand in the direction of rotation.
•On N75 − 160, N250 − 300H aircooled units, whilst rotating the motor, pump grease into the bearing until grease is seen at the relief port.
•Thereafter rotate the motor as described above every three months until such time as the unit is placed in service.
•If the storage time is to exceed a total of nine (9) months duration, the compressor must be ordered for long term storage.
Motor cowl cleaning N75−160 units only
•Ensure compressor is electrically isolated for at least 15 minutes before commencing any maintenance work.
•Remove panels from the compressor.
•Using a clean dry cloth, remove dust from the surface of the motor cowl and ensure all ventilation slots are free of obstructions.
•Replace panels to the compressor.
Drive Box Filter Removal / Replacement
•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.
Moisture Separator Check / Cleaning
•Ensure compressor is electrically isolated for at least 15 minutes, before commencing any maintenance work.
•Isolate the compressor from the system and fully discharge the compressed air within the unit.
•Remove plastic tube from the fitting located on the bottom of the moisture separator.
•Remove the bowl of the moisture trap, clean and replace.
Condensate (Moisture) Drain Valve / Trap
•Ensure compressor is electrically isolated for 15 minutes and all pressure is relieved from system.
•Remove all pipes going to and from the valve (or trap).
•Disconnect any electrical cables to the valve (or trap).
•Determine the type of condensate drain device and continue in the appropriate section below:−
Timed Solenoid Drain Valves (where fitted) Check / Cleaning
•Remove the central nut and then the electrical coil.
•Remove screws holding bonnet of valve and carefully split the valve. Clean and inspect all internal parts.
•Similarly check and clean the ball valve and needle valve.
•Replace any defective parts as identified in parts manual.
•Re−assemble and later, with machine running, check that condensate and air is expelled at frequency and duration set into the INTELLISYS controller (see section 9.6).
IRN37 - 160K - CC & IRN50 - 200H & IRN75 - 160K - 2S & IRN - 100 - 200H - 2S & IRN 250 - 300H - 2S | 89 | |
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