Section 7: Troubleshooting; Introduction - Sullair E900H User Manual

E900H User Manual

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
replacement procedures.
Table 7-1: Troubleshooting guide
Symptom
Compressor will not start
or shuts down after 10 sec-
onds
Section 7
Troubleshooting
Probable cause
Main disconnect switch open
Line fuse blown
Motor starter overload tripped
Low incoming line voltage
Incorrect phase order trips phase
monitor.
Ground fault protector tripped
Control transformer fuse blown
Subject to EAR, ECCN EAR99 and related export control restrictions.
A detailed visual inspection is worth performing for
almost 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.
02250203-986 R03
7: Troubleshooting
Remedy
Close switch.
Replace fuse.
Reset. Should trouble persist, check
whether motor starter contacts are
functioning properly.
Check voltage. Should voltage check
low, consult power company.
Switch any two phases of incoming
power and reset monitor
Look for shorts or open circuits on con-
trol circuit, repair and reset protector. If
none found, ground fault protector
could require replacement.
Replace fuse
51