Troubleshooting - Sullair ES-6 Series User Manual

SECTION 6
15. Replace gasket and reinstall the whole inlet
control valve assembly.
16. Apply screw lock adhesive to inlet control
housing assembly ferry head capscrews and
install. Torque to 30 ft.-lbs. (40.7Nm).
17. Reconnect tubing to inlet control valve hous-
ing at 90° elbow.
18. Reinstall air inlet filter assembly.
M S S R
OTOR HAFT EAL EPLACEMENT
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
6.8 TROUBLESHOOTING GUIDE
Symptom
COMPRESSOR WILL NOT START
COMPRESSOR SHUTS DOWN WITH
AIR DEMAND PRESENT
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 the trouble should be systematically
analyzed
component replacement procedures.
A detailed visual inspection is worth performing for
almost
unnecessary damage to the compressor. Always
remember to:
• Check for loose wiring.
• Check for damaged piping.
• Check for parts damaged by heat or an
Should your problem persist after making the
recommended check, consult your nearest Sullair
representative or the Sullair Corporation factory.
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 Cooling air flow restricted; clean cooler
ES-6 USER MANUAL
before undertaking
any problems which
electrical short circuit, usually apparent by
discoloration or a burnt odor.
Remedy
Close switch.
Replace fuse.
Replace fuse.
Reset. Should trouble persist, check
whether motor starter contacts are func-
tioning properly.
Check voltage. Should voltage check
low, consult power company.
Consult power company.
Defect in pressure switch; check pres-
sure at which contact points open.
and check for proper ventilation.
Ambient temperature is too high; pro-
vide sufficient ventilation.
Low fluid level; add fluid.
Clogged filter; change the fluid filter ele-
ment.
Thermal valve not functioning; replace
element.
Defective discharge temperature switch;
check for a short or open circuit to probe
and correct wiring.
any repair or
may prevent
75