Troubleshooting - Ingersoll-Rand 2475N7.5-P Owner's Manual

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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
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
Low Oil Pressure
Excessive oil pressure fluctuations (> 5 psi)
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, 11, 16, 32, 40
2, 15, 17, 19, 20, 21
12, 13
9,10
5, 6, 12, 13, 14, 15, 16, 19, 20, 21, 34
4, 7, 9, 18, 19, 25, 35
25
1,5, 29, 30
3O
31
6, 14, 37, 38
12
39
41
42, 43, 44, 46
42, 43, 44, 45, 46