Periodic Maintenance

[ ] Complete all recommended quarterly maintenance procedures.

[ ] Lubricate the vane control linkage bearings, ball joints, and pivot points; as needed a few drops of light machine oil (SAE-20) is sufficient.

[ ] Lubricate vane operator tang o-rings as described in the maintenance section.

[ ] Lubricate the oil filter shutoff valve o-rings by removing the pipe plug and adding several drops of Trane OIL00022. Replace plug.

[ ] Drain the contents of the rupture disc and purge discharge ventline drip-leg, into an evacuated waste

container minimally and more often if the purge is operated excessively.

Also, apply one or two drops of oil on the vane operator shaft and spread it into a very light film; this will protect the shaft from moisture and rust.

Off-Season Maintenance

During those periods of time when the chiller is not operated, be sure the control panel is energized. This is to keep the purge operational, the oil heater warm and will also keep air out of the machine.

Annual Maintenance

Shut down the chiller once each year to check the items listed ; a more detailed inspection checklist is

provided on the ‘‘Annual Inspection Checklist and Report’’ illustrated in this manual.

[ ] Perform the annual maintenance procedures referred to in the Maintenance Section of the purge manual.

[ ] Use an ice water bath to verify that the accuracy of the evaporator refrigerant temperature sensor (4R10) is still within tolerance (+ or - 2.0° at 32°F (1° at 0°C)). If the evaporator refrigerant temperature displayed on the UCP’s read-out is outside this 4- degree tolerance range, replace the sensor.

Note: If the sensor is exposed to temperature extremes outside its normal operating range (0°F to 90°F) (- 18°C to 32°C), check its accuracy at six-month intervals.

94

CDHF-SVU01C-EN

Page 94
Image 94
American Standard CH530 manual Off-Season Maintenance, Annual Maintenance