Troubleshooting; Troubleshooting Guide - Sullair LS-200 Operator's Manual And Parts List

9.1 TROUBLESHOOTING

The information contained in the Troubleshooting
chart 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 analyzed before undertak-
ing any repairs or component replacement proce-
dures.
In addition to the Troubleshooting Guide, consult
the Supervisor Controller manual for additional
troubleshooting guidelines pertaining to the
Supervisor Controller.

9.2 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
Loss of Control Voltage
Low Incoming Voltage
Excessive Operating Pressure
TROUBLESHOOTING
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 electrical
short circuit, usually apparent by discoloration or
a burnt odor.
Should your problem persist after making the rec-
ommended check, consult your nearest Sullair rep-
resentative or the Sullair Corporation Service
Department.
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.
Reset. If trouble persists, check that line
pressure does not exceed maximum operat-
ing pressure of the compressor (specified on
nameplate).
Consult power company.
Defect in line pressure switch; check pres-
sure at which contact points open.
Separator requires maintenance; check
maintenance indicator under full load condi-
tions.
High pressure shutdown switch is defective;
replace.
Defective valve; regulator valve should
cause inlet valve to close when operating
pressure is met. Repair if defective.
Defective blowdown valve; blowdown valve
should exhaust sump pressure to 20 to 30
psig (1.4 to 2.1 bar) when maximum operat-
ing pressure is reached. Repair if defective.
Section 9
REMEDY
Continued ...
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