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SECTION 6
6.8
TROUBLESHOOTING—
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
undertaking any repairs or component replacement
procedures.
In addition to the Troubleshooting Guide, consult the
Supervisor
Controller
troubleshooting
guidelines
Supervisor Controller.
Table 6-2: Troubleshooting Guide
SYMPTOM
Compressor will not start
Compressor Shuts Down With
Air Demand Present
analyzed
before
manual
for
additional
pertaining
to
the
PROBABLE CAUSE
Main disconnect switch open
Line fuse blown
Control Transformer Fuse Blown
Motor Starter Overloads Tripped
Low Incoming Line Voltage
Loss of control voltage
Low incoming voltage
Excessive operating pressure
A detailed visual inspection is worth performing for
almost all problems and may avoid unnecessary
additional damage to the compressor. Always
remember to:
1. Check for loose wiring.
2. Check for damaged piping.
3. Check for parts damaged by heat or an elec-
trical short circuit, usually apparent by discol-
oration or a burnt odor.
Should your problem persist after making the
recommended check, consult your nearest Sullair
representative.
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.
Replace Supervisor display module if no
display or erratic display.
Check incoming power.
Check control fuses and wiring.
Consult power company. The Sullair
Supervisor will provide indication of most
maintenance problems if control power has not
been lost. Shutdowns will occur upon a faulty
condition or a bad sender condition.
Check maximum P2 pressure setting.
HIGH PRESS P1 display; Max P1 pressure
may be set too low. Consult factory for
recalibration.
Defective solenoid valve; solenoid valve
should cause inlet to unload when unload
pressure is exceeded. Repair if defective.
Defective blowdown valve; blowdown valve
should open when in the unload mode. Repair
if defective.
Open or shorted P1, P2, P3 or P4 sender
message; replace sender indicated.
Operating lever of inlet butterfly valve is loose
on valve shaft. Reposition the valve plate and
tighten lever set screw.
TS32 USER MANUAL
75
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