SRC Service Manual
Revision 02
Aug 2007
Da
ily
W
eek
ly
4 to 6
M
onths
Annual
ly
Daily
Check the digital display for warnings or alarms.
X
Verify the dew point on the digital display is between 35 - 41 deg F. Higher values may indicate operating
conditions above the maximum rating of the dryer.
X
Press the Drain Button to verify the drain is functioning properly. A failure to open, or large volumes of
con
X
densate, may indicate improper funtioning, an outlet blockage, backpressure, or inadequate interval and
duration settings (when in Timed Operating mode).
Weekly
Verify that the ambient temperature is within dryer's operating limits & that the dryer has adequate ventilation.
X
Verify that the inlet conditions of flow, pressure and temperature are within the maximum rating for the dryer.
X
Check the condenser pre-filter for excessive dust or debris & clean as necessary.
X
Every 4 to 6 Months
Check the differential pressure (or incident) monitors on the pre and after filters. If the value is in the red, replace
the elements
X
Check the refrigerant compressor discharge temperature (See Section 2.3).
X
Verify the refrigerant piping is in good condition and check for presence of oil stains, indicating a refrigerant leak.
X
Blow compressed air backwards through the condenser coils & condenser pre-filter to clean them. Use steam to
remove oily deposits.
X
Clean the condenser filters when dryer is installed in dirty and dusty places.
X
Clean the condensate strainer prior to the condensate drain valve.
X
Check the current drawn is within the limits specified for the unit.
X
Check tightness of the electrical cables on the terminal blocks and inspect the main cables.
X
Blow dust off the contactors.
X
Annually
Replace pre and after filter elements annually regardless of indicated pressure drop.
X
Verify presence of air leaks from flanges and joints.
X
Verify the water piping is in good condition and check for water/glycol leaks.
X
Do a careful leak detection on joints, welds & service valves.
X
Disassemble and clean (or replace) the condensate drain valve.
X
11. Recommended Maintenance
11.1 Maintenance
Schedule
11.2 Preventative Maintenance Kits
In addition to the service requirements outlined above, proactive preventative maintenance can
ensure continuous trouble free operation without unexpected alarms or failures. Three year
preventative maintenance kits are available which include:
•
Pressure
switches
•
Temperatures
probes
•
Fan/compressor
contactors
Refer to the user guide for further details.
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