Motor Shaft Seal Replacement; Troubleshooting; Troubleshooting Guide - Sullair ES-6 SERIES User Manual

ES-6 USER MANUAL
17. Reconnect tubing to inlet control valve housing
at 90° elbow.
18. Reinstall air inlet filter assembly.

MOTOR SHAFT SEAL REPLACEMENT

Replacement of motor shaft seal requires that the
compressor be separated from the drive housing.
This operation requires qualified personnel.
Detailed instructions and a list of needed tooling
are included in each motor shaft seal replacement
kit no. 250028-035.

6.7 TROUBLESHOOTING

The information contained in the Troubleshooting
chart is based upon both the actual applied
situations and extensive testing at the factory. It
contains symptoms and usual causes for the
described problems. However DO NOT assume

6.8 TROUBLESHOOTING GUIDE

SYMPTOM
COMPRESSOR WILL NOT
START
COMPRESSOR SHUTS
DOWN WITH AIR DEMAND
PRESENT
PROBABLE CAUSE
Main Disconnect Switch Open
Line Fuse Blown
Control Transformer Fuse
Blown
Motor Starter Overloads
Tripped
Low Incoming Line Voltage
Low Incoming Voltage
Excessive Operating Pressure
Discharge Temperature Switch
Open
Section 6 - MAINTENANCE
that these are the only problems that may occur.
All available data concerning the trouble should be
systematically analyzed before undertaking any
repair or component replacement procedures.
A detailed visual inspection is worth performing for
almost any problems
unnecessary damage to the compressor. Always
remember to:
• Check for loose wiring.
• Check for damaged piping.
• Check for parts damaged by heat or an
electrical short circuit, usually apparent by
discoloration or a burnt odor.
Should your problem persist after making the
recommended check, consult your nearest Sullair
representative or the Sullair Corporation factory.
REMEDY
Close switch.
Replace fuse.
Replace fuse.
Reset. Should trouble persist, check whether
motor starter contacts are functioning properly.
Check voltage. Should voltage check low, consult
power company.
Consult power company.
Defect in pressure switch; check pressure at which
contact points open.
Cooling air flow restricted; clean cooler and check
for proper ventilation.
Ambient temperature is too high; provide sufficient
ventilation.
Low fluid level; add fluid.
Clogged filter; change the fluid filter element.
Thermal valve not functioning; replace element.
List continues on page 45
which may prevent
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