Gardner Denver Air Dryer RGD400A4

Warning: Dismantling or working on any component of the compressed air system under pressure may cause equipment failure and serious personal injury. Before dismantling any part of the dryer or compressed air system, completely vent the internal pressure to the atmosphere.

Inspect the condenser coils monthly.

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), if necessary.

Sign off on the monthly air dryer maintenance

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

WARNING! If power supply is not connected and unit is not depressurized before disassembly, serious personal injury and valve damage may result.

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. Do not damage or lose the gasket

Warning: Dismantling or working on any component of the compressed air system under pressure may cause equipment failure and serious personal injury. Before dismantling any part of the dryer or compressed air system, completely vent the internal pressure to the atmosphere.

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.

Sign off on the daily air dryer maintenance