Section 7
E900H User Manual 7: Troubleshooting
02250203-986 R03
Subject to EAR, ECCN EAR99 and related export control restrictions. 51
Troubleshooting
7.1 Introduction
The information contained in the Troubleshooting Guide
has been compiled from field report data and factory
experience. It contains symptoms and usual causes for
the described problems. However, do not assume that
these are the only problems that may occur. All available
data concerning a problem should be systematically ana-
lyzed before undertaking any repairs or component
re
placement procedures.
A detailed visual inspection is worth performing for
alm
ost all problems and may avoid unnecessary addi-
tional damage to the compressor. Always remember to:
• Check for loose wiring.
•
Check for damaged piping.
• Check for parts damaged by heat or an electri-
cal short circuit, usually apparent by discolor-
ation or a burnt odor.
Should your problem persist after making the recom-
mended check, consult your nearest Sullair representa-
tive.
Table 7-1: Troubleshooting guide
Symptom Probable cause Remedy
Compressor will not start
or shuts down after 10 sec-
onds
Main disconnect switch open Close switch.
Line fuse blown Replace fuse.
Motor starter overload tripped
Reset. Should trouble persist, check
whether motor starter contacts are
functioning properly.
Low incoming line voltage
Check voltage. Should voltage check
low, consult power company.
Incorrect phase order trips phase
monitor.
Switch any two phases of incoming
power and reset monitor
Ground fault protector tripped
Look for shorts or open circuits on con-
trol circuit, repair and reset protector. If
none found, ground fault protector
could require replacement.
Control transformer fuse blown Replace fuse
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