Troubleshooting - Ingersoll-Rand 2475 Owner's Manual

TROUBLESHOOTING

PROBLEM
Abnormal piston, ring or cylinder wear
Air delivery drops off
Automatic drain valve leaks or does not drain automatically
Auxiliary valve chatters or leaks around stem
Broken intercooler or aftercooler tubes
Compressor does not come up to speed
Compressor is slow to come up to speed
Compressor runs excessively hot
Compressor will not unload cycle
Compressor will not unload when stopped
Excessive noise during operation
Excessive starting and stopping
Knocks or rattles
Lights flicker or dim when running
Moisture in crankcase or "milky" appearance in petroleum lubricant or rusting in cylinders 9, 10
Motor overload trips or draws excessive current
Oil in discharge air (oil pumping)
Oil leaking from shaft seal
Safety/relief valve "pops"
High interstage pressure
Low interstage pressure
Engine cranks slowly or will not start
Motor will not start
Engine will not start
Oil Leaks
ELECTRIC DRAIN TROUBLESHOOTING
TROUBLE
Valve will not close.
Timer will not activate.
16
CAUSE
1. Debris in solenoid valve prevents
diaphragm from seating.
2. Short in electrical component.
1. No electrical supply.
2. Timer malfunction
3. Clogged port.
4. Solenoid valve malfunction.
5. Clogged strainer.
CHECK POINT
4, 8, 9, 19, 28, 35
1, 6, 15, 16, 18, 19, 29
16
23, 24
36
2, 6, 12, 15, 21
26, 27, 33, 34
3, 14, 15, 22
23, 24, 26
26, 33
2, 6, 15, 16, 21, 27, 32
5, 16, 32, 40
2, 15, 17, 19, 20, 21
12, 13
5, 6, 12, 13, 14, 15, 16, 19, 20, 21, 34
4, 7, 9, 18, 19, 25, 35
25
1, 5, 29, 30
30
31
6, 14, 37, 38
12
39
41
ACTION
1. Remove solenoid valve, disassemble, clean and
reassemble.
2. Check and replace power cord or timer as
needed.
1. Apply power.
2. Replace timer.
3. Clean valve.
4. Replace solenoid valve.
5. Clean strainer.
22607402 Rev.D