Sullair Cycling Refrigerated Air Dryers SRC-325

- Check the digital display for warnings or alarms.

- Verify the dew point on the digital display is between 35 -41 degrees F. Higher values may indicate operating conditions above the maximum ring of the dryer.

- Press the Drain button to verify the drain is functioning properly. A failure to open, or large volumes of condensate, may indicate improper functioning, an outlet blockage, backpressure, or inadequate interval and duration settings (when in Timed Operating mode).

- Check the differential pressure (or incident) monitors on the pre and after-filters. If the value is in the red, replace the elements.

- Check the refrigerant compressor discharge temperature (See Section 2.3).

- Verify the refrigerant piping is in good condition and check for the presence of ail stains, indicating a refrigerant leak.

- Blow compressed air backers through the condenser coils & condenser pre-filter to clean them. Use steam to remove oily deposits.

- Clean the condenser filters when the dryer is installed in dirty and dusty places.

- Clean the condensate strainer prior to the condensate drain valve.

- Check that the current drawing is within the limits specified for the unit.

- Check the tightness of the electrical cables on the terminal blocks and the main cables.

- Blow the dust off the contactors.

- Verify that the ambient temperature is within the dryer's operating limits & that the dryer has adequate ventilation.

- Verify that the inlet conditions of flow; pressure and temperature are within the maximum rating for the dryer.

- Check the condenser pre-filter for excessive dust or debris & clean as necessary.;

- Replace pre and after-filter elements annually regardless of indicated pressure drop.

- Verify the presence of air leaks from flanges and joints.

- Verify the water piping is in good condition and check for water/glycol leaks.

- Do careful leak detection on joints, welds & service valves.

- Disassemble and clean (or replace) the condensate drain valve.