Kaishan Compressor Air Compressor KRSD-50

Replace air/oil separator (spin on type)

The air/oil separator is a coalescent filter element. Replacement of standard type separator requires unbolting and lifting the separator cover and replacing it with a new one. The air/oil separator should be replaced as indicated in the maintenance schedule or as follows:

♦ If excessive fluid carryover is observed.

♦ 4,000 hours MAX (for spin on type), or-as indicated by differential pressure indicator.

♦ As indicated by the gauge (if equipped).

KRSD series compressors utilize a pressurized fluid drain. Use the following procedure to drain and replace the compressor fluid.

Did you spin off the cartridge?

Did you replace the cartridge with a new one?

NOTICE: The fluid filter maintenance indicator may read high upon start up on cool mornings due to sluggish fluid creating higher than normal differential pressures. Monitor indicator after the fluid warms up.

Is the compressor in shut down mode?

Enter the fluid level as indicated on the reservoir sight glass.

Is the fluid level at the top red-mark?

Sign off on the initial 500 hours compressor maintenance

NOTICE: The fluid filter maintenance indicator may read high upon start up on cool mornings due to sluggish fluid creating higher than normal differential pressures. Monitor indicator after the fluid warms up.

Check the pressure gauge reading on reservoir and wait until there is no pressure in reservoir.

Take sample at normal operating conditions or immediately after shutting unit down.

Wipe excess contamination from sample area.

Inspect the fluid level when the compressor is in shut down mode. Fluid level is indicated on the reservoir sight glass. The maximum fluid level is at the top red-mark. Add fluid until the top red-mark is reached.

Motor rotation must be checked after the wiring has been installed. Operating the compressor in incorrect rotation will result in severe damage to the compressor and warranty coverage will be voided. Motor rotation can be viewed through the opening in the drive grille. The drive motor end of the compressor is marked with an arrow noting the proper rotation.

To inspect rotors rotation, pull out the “EMERGENCY STOP” button and press once, quickly press the “START” and “STOP” button in sequence, allowing the motor to turn 2 or 3 revolutions. Observe the drive shaft for correct direction. If reverse rotation is observed, disconnect the power supply, reverse power input leads at the motor starter. Recheck for proper rotation.

Fan motor rotation should be inspected. KRSD compressors use an axial fan for cooling. Fan rotation is inspected through an arrow shaped observation hole above the fan motor. The fan must rotate in the direction indicated by the arrow.

Always inspect fan rotation through the observation hole. Never assume the fan rotation is correct based on the induced air flow across the coolers. A centrifugal fan can pull the airflow across the coolers when rotating in either direction:however, incorrect rotation will cause high discharge temperature.;

WARNING: Always ensure the compressor is switched off and all air pressure is relieved before starting the maintenance.

NOTICE: Intake filtration equipment supplied from the factory may not be adequate for extremely dirty applications or some forms of dust or vapors. It is the customer’s responsibility to provide adequate filtration for those conditions. Warranty will be voided if inadequate filtration causes a failure.

Is the maintenance gauge showing red with the compressor running full load?

Has it been 4000 hours or a year since the last filter replacement?

If any of the above checks are 'PASS', proceed with the filter replacement.

Upload a photo of the old filter

Upload a photo of the new filter installed

Sign off on the filter replacement