Ingersoll-Rand MHP825WCAT, Operation & Maintenance Manual

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Operation & Maintenance Manual Fault Finding
92
Refer also to the Engine Manufacturer’s Manual.
FAULT CAUSE REMEDY
Air discharge
capacity too
low. Engine speed too low. Check the air cylinder and air filter(s).
Blocked air cleaner. Check the restriction indicators and replace the
element(s) if necessary.
High pressure air
escaping
.
Check for leaks.
Incorrectly set
regulation system. Reset the regulation system. Refer to SPEED
AND PRESSURE REGULATION
ADJUSTMENT
in the MAINTENANCE section
of this manual.
Compressor
overheats. Low oil level. Top up the oil level and check for leaks.
Dirty or blocked oil
cooler. Clean the oil cooler fins.
Incorrect grade of oil. Use Ingersoll–Rand recommended oil.
Defective by-pass
valve. Check the operation of the element and replace
if necessary.
Recirculation of
cooling air. Move the machine to avoid recirculation.
Reduced cooling air
from fan. Check the fan and the drive belts. Check for
any obstruction inside the fan cowl.
Excessive oil
present in the
discharge air. Blocked scavenge line. Check the scavenge line, drop tube and orifice.
Clean and replace.
Perforated separator
element. Replace the separator element.
Pressure in the system
is too low. Check the minimum pressure valve.
Safety valve
operates. Operating pressure too
high. Check the setting and operation of the regulator
valve piping.
Incorrect setting of the
regulator. Adjust the regulator.
Faulty regulator. Replace the regulator.
Inlet valve set
incorrectly. Refer to SPEED AND PRESSURE
REGULATION ADJUSTMENT in the
MAINTENANCE section of this manual.