Periodic Maintenance Checklists, Rotating parts

Maintenance

Winterizing the Coil

Make provisions to drain coils that are not in use, especially when subjected to freezing temperatures.

To drain the coil, first blow out the coil with compressed air. Next, fill and drain the tubes with full- strength ethylene glycol several times. Then drain the coil as completely as possible.

NOTICE

Potential coil-freeze condition!

Make provisions to drain the coil when not in use to prevent coil freeze-up. Failure to follow this procedure could result in equipment damage.

Periodic Maintenance Checklists

Monthly Checklist

The following check list provides the recommended maintenance schedule to keep the unit running efficiently.

WARNING

Hazardous Voltage!

Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

WARNING

Rotating parts!

Secure drive sheaves to ensure motor cannot freewheel. Failure to follow this procedure could result in death, personal injury or equipment damage.

1.Inspect unit air filters. Clean or replace if airflow is blocked or if filters are dirty.

2.Check the condition and tension of fan belts. Adjust tension if belts are floppy or squeal continually. Replace worn or fraying belts in matched sets.

Note: Check and adjust belt tension at least twice daily the first days of new belt operation. Belt tension will rapidly decrease until the belts are run in.

3.Re-lubricate motor bearings, if motor is fitted with oil tubes and operating conditions include moist or dirty air, continuous duty and/or high temperatures.

Semi-Annual Maintenance

1.Verify the fan motor is properly lubricated. Follow lubrication recommendations on the motor tag or nameplate. Contact the motor manufacturer for more information.

2.With power disconnected, manually rotate the fan wheel to check for obstructions in the housing or interference with fan blades. Remove any obstructions and debris.

3.Check the fan assembly sheave alignment. Tighten set screws to their proper torques.

4.Check fan belt tension. Adjust if belt is slipping. Replace if belt is worn or frayed.

5.Inspect the coils for dirt build-up. Clean fins if airflow is clogged.

Annual Maintenance

Check and tighten all set screws, bolts, locking collars and sheaves.

1. Inspect, clean, and tighten all electrical connections and wiring.

70	BCXC-SVX01B-EN