PROBLEM
Moisture down stream
Moisture down stream
High pressure drop across
dryer
SYMPTOM(S
)
Dryer cooling airstream
(Outlet substantially cooler
than inlet)
Inlet and outlet temperatures
are the same.
Outlet pressure substantially
lower than inlet pressure
POSSIBLE CAUSE
Drain failure or adjustment is
required
Excessive flow
Dryer by-pass not closed
No power to the dryer
High suction pressure
Refrigerant leak
Compressor not running and
fan is running
Compressor and fan not
running
Fluid Circulating System
malfunction
Inlet and outlet valves not
completely open
Inlet and outlet filters
blocked up
No dryer prefilter and heat
exchanger has become
clogged
System operating
temperature is below 32°F
CORRECTIVE ACTION
Dismantle and clean drain and / or strainer.
Repair or replace as necessary.
Check inlet and outlet pressures and system
design capacity. Correct cause of excessive flow
Close by-pass valve
Check power supply and fuses/circuit
breakers
Check and clean condenser / ambient air filter.
Check suction pressure gauge if reading is
0 psig, turn dryer off and contact your
distributor
Check and clean condenser / ambient air filter.
Check ambient temperature and reduce
below 113°F
Compressor relay may be bad, replace relay
Check for loose wire connections at
contactor or loss of power at control board
Inoperative pump or pump may have lost
prime. Check pump and contact Ingersoll
Rand for priming instructions.
Contact your local distributor for further
assistance.
Open valves
Change filter elements
Flush air system as required. Consult your
local distributor.
Turn dryer off and consult your local
distributor for further assistance
a
WARNING
An air dryer always operates under pressure. Any maintenance
procedure that involves disassembly of pipe fittings, valves or any
other components requires the dryer be isolated from the compressed
air stream and fully depressurized.
a
WARNING
Prior to working on the unit, make sure that all curcuit breakers,
disconnect switches and compressed air valves are tagged “OUT OF
SERVICE.”
10.2 PROBLEM / ACTION GUIDE
10.1 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 identification and corrective actions.
8
Nirvana Cycling Refrigerated Dryer 75 through 150 scfm
http://air.irco.com
10.0 TROUBLESHOOTING
