Nirvana D4290NCHP User Manual

ingersollrandproducts.com 19
11.2 PROBLEM / ACTION GUIDE
PROBLEM SYMPTOM(S) POSSIBLE CAUSE CORRECTIVE ACTION
Moisture down stream Dryer is properly cooling air
stream (Check Chiller. Temp
on controller)
Condensate drain failure Service drain
Excessive ow Check inlet and outlet pressure
and system design capacity.
Correct cause of excessive ow.
Dryer by-pass valve not
closed
Close by-pass valve
Inlet and outlet
temperatures are the same.
No power to the dryer Check power supply and fuses/
circuit breakers
High suction pressure Check and clean condenser.
Refrigerant leak Check suction pressure gauge if
reading is 0 psig, turn dryer o
and contact your distributor
Compressor not running and
fan is running
Check and clean condenser.
Check ambient temperature and
reduce below 113°F
Moisture down stream Inlet and outlet
temperatures are the same.
Compressor and fan not
running.
Check Chiller Temperature
Compressor and fan not
running. Controller indicates
compressor is ON.
Compressor relay may be bad,
replace relay
Check for loose wire connections
at contactor or loss of power at
control board
Defective control board - replace
as necessary
Contact your local distributor for
further assistance.
Compressor and fan are
running, exchanger temp
high, pump not running.
Defective Pump Contact your local distributor for
further assistance.
11.0 TROUBLESHOOTING
11.1 INTRODUCTION
Ingersoll Rand Nirvana™ Cycling dryers are designed for
reliable, trouble-free operation. In the event of any dryer
malfunction, the guide below has been developed to
facilitate problem identication and corrective actions.
WARNING
An air dryer always operates under pressure. Any
maintenance procedure that involves disassembly of
pipe ttings, valves or any other components requires
the dryer be isolated from the compressed air stream
and fully depressurized.
WARNING
Prior to working on the unit, make sure that all circuit
breakers or disconnected switches are tagged “Out of
Service.”
120.26A D4290NCHPW400F Installation Operation and Maintenance Manual

Nirvana D4290NCHP Specifications

General

Brand	Nirvana
Model	D4290NCHP
Category	Dryer
Language	English