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Nirvana Cycling Refrigerated Dryer Models 3250-8000
ingersollrandproducts.com
11.0 TROUBLESHOOTING
PROBLEM
Apparent controller display malfunction.
Display Blank
Apparent controller display malfunction.
Unrealistic temperature displayed
Apparent controller display malfunction. Erratic
or inaccurate temperature readings
Apparent controller display malfunction.
Unrealistic pressure displayed
Condensate drain does not fire
Condensate drain LED is off
Air bleed from condensate drain outlet port
Condensate drain bowl does not seem to fill
with condensate, drain does not seem to work
due to air locking
POSSIBLE CAUSE
Blown Fuse
Board Failure
Probe loose,off connection or defective probe
Probe not completely in thermal well
Defective probe
Transducer loose, off connection or defective
transducer
Inlet / outlet pipe internal diameter too small
causing air-lock or back pressure.
Excessive use of bends / elbows in inlet /
outlet pipe work causing air-lock/ back
pressure.
Outlet pipe too long / too high causing back
pressure.
More than one condensate source connected
providing alternative path for condensate.
Debris trapped under seal. Damage to seal.
CORRECTIVE ACTION
Check Fuses
Contact your local distributor for further
assistance.
Inspect probe cable and terminal connection
Replace probe
Inspect probe and check readings against
independent source (eg. temperature
analyzer/pyrometer/ice bath) both in temperature
well and to ambient
Replace probe
Inspect transducer cable and terminal
connection Replace transducer
Check installation is in accordance with this
manual. Revise installation accordingly.
Replace with larger diameter piping.
Reduce the amount of bends and elbows.
Reconfigure condensate piping.
Reroute condensate to eliminate secondary
path. Install check valves as required.
Check power supply. Press test button for
minimum 2 seconds and observe. Locate
and eliminate supply fault.
Press and hold the test button to clear (drain
valve will open). Replace seal with Service Kit.
If bottom inlet is used, top port must be used as
air bleed. Make sure Connect the top inlet to a
higher point in system, which will function as an
air bleed for the drain.