SPX Flow Refrigerated Type Compressed Air Dryer HPRN300

NOTE: Before corrective maintenance is done during the warranty period, call your local distributor and proceed according to instructions. Refer to the warranty for limits of your coverage.

It is recommended to inspect the condenser coils monthly.

If necessary, remove dirt or other particles with compressed air from an OSHA-approved air nozzle that limits its discharge pressure to 30 psig (2.1 kgf/cm2).

Remove dirt or other particles with compressed air

Sign off on the weekly air dryer maintenance

NOTE: Before corrective maintenance is done during the warranty period, call your local distributor and proceed according to instructions. Refer to the warranty for limits of your coverage.

Check the operation of the automatic drain valve

See the Field Service Guide for remedies to drain valve malfunctions.

See the AUTOMATIC DRAIN VALVE section for drain valve adjustment.

CAUTION! Do not disassemble drain valve timer or attempt to repair electrical parts. Replace timer if defective.

Disconnect main power supply to dryer

Lock out and tag power supply in accordance with OSHA requirements

Remove hoses that connect the drain valve to the drain discharge fitting and remove the valve from the drain valve strainer

Remove screw and washer from front of the drain valve

Remove the power supply connector and gasket (with the timer assembly if attached) from the solenoid coil housing

Remove coil fixing nut from top of solenoid coil housing