Troubleshooting - Ingersoll Rand Nirvana NVC2000 A400 Manual Del Operador

PROBLEM
Apparent controller display
malfunction
High pressure drop across
dryer
Condensate drain does not fire
Condensate drain LED is off
(Optional-No Air Loss Drain)
Air bleed from condensate
drain outlet port
(Optional-No Air Loss Drain)
Condensate drain bowl does
not seem to fill with
condensate, drain does not
seem to work due to air
locking (Optional-No Air Loss
Drain)

11.0 TROUBLESHOOTING

SYMPTOM(S
)
Display Blank
Blown Fuse
Board Failure
Unrealistic temperature
Probe loose,off connection or
displayed
defective probe
Erratic or inaccurate
Probe not completely in
temperature readings
thermal well
Defective probe
Unrealistic pressure
Transducer loose, off
displayed
connection or defective
transducer
Outlet pressure substantially
Inlet and outlet valves not
lower than inlet pressure
completely open
System operating
temperature is above 32°F
Inlet and outlet filters blocked
up
Outlet pressure substantially
Compressor relay / contactor
lower than inlet pressure
stuck.
System operating
temperature is below 32°F
Microprocessor Control relay
bad
Probe not completely in
thermal well
Problem persists
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.
Nirvana Cycling Refrigerated Dryer Models 2000-2400
ingersollrandproducts.com
POSSIBLE CAUSE
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
Open valves
Change filter elements
Replace relay / contactor.
Replace relay
Inspect probe and check readings against
independent source (eg. temperature
analyzer/pyrometer/ice bath) both in
exchanger well and to ambient
Turn dryer off and consult your local
distributor for further assistance
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.
CORRECTIVE ACTION
17