Gardner Denver Gardner Denver Air Dryer RCD500A4 RCD500A4

1. Check the operation of the automatic drain valve at least once during each 8-hour shift. Inspect and clean (if necessary) the drain valve strainer.

2. Dryers with the Energy Management Controller

Check the following front panel lights:

- If either alarm light is lit, shut down the dryer and refer to the Controller section to determine the cause. An accurate record of system operating parameters can aid in troubleshooting, and can indicate gradual reductions in system efficiency. Using the DISPLAY SELECT button on the control panel, check the system temperatures, and record in the Operator’s Log provided in the back of this manual.;

Air-cooled condensers maintenance

Remove dust, dirt or other particles with a soft brush or with compressed air from an OSHA-approved air nozzle that limits its discharge pressure to 30 psig

If the coils are coated with oil, grease or other substances that reduce the cooling efficiency, clean the coils with a solvent

Follow the solvent manufacturer’s directions for proper use and disposal, including the use of proper protective equipment

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

Disconnect main power supply to dryer

Lock out and tag power supply in accordance with OSHA requirements

Remove screw and washer from front of valve

Remove the power supply connector and gasket from the solenoid coil housing. Do not damage or lose the gasket.

Remove 13mm nut and spring washer from top of solenoid coil housing

Lift solenoid coil housing off solenoid core in valve body

Unscrew solenoid core from valve body