Troubleshooting; Troubleshooting Guide - Sullair ES-6 5H Operator's Manual And Spare Parts List

6.7 TROUBLESHOOTING

The information contained in the Troubleshooting
chart is based upon both the actual applied situa-
tions and extensive testing at the factory. It contains
symptoms and usual causes for the described prob-
lems. However DO NOT assume that these are the
only problems that may occur. All available data
concerning the trouble should be systematically
analyzed before undertaking any repair or compo-
nent replacement procedures.
A detailed visual inspection is worth performing for

6.8 TROUBLESHOOTING GUIDE

SYMPTOM
COMPRESSOR WILL NOT START
COMPRESSOR SHUTS DOWN
WITH AIR DEMAND PRESENT
COMPRESSOR WILL NOT BUILD
UP FULL DISCHARGE PRESSURE
LI NE P RE S S URE RI S E S A B O V E
CUT--OUT PRESSURE SETTING
ON PRESSURE SWITCH
almost any problems which may prevent unneces-
sary damage to the compressor. Always remember
to:
a. Check for loose wiring.
b. Check for damaged piping.
c. Check for parts damaged by heat or an electrical
Should your problem persist after making the rec-
ommended check, consult your nearest Sullair rep-
resentative 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
Air Demand Is Too Great
Dirty Air Filter
Pressure Regulator Out Of
A dj us t m ent
Defective Solenoid Valve
Def ec t i v e S ol enoi d Val v e
Leak In Control System Causing
Loss of Pressure Signals
Defective Pressure Switch
MAINTENANCE
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
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.
Defective discharge temperature switch;
check for a short or open circuit to probe
and correct wiring.
Check service lines for leaks or open
valves.
Check filter and change element if
required.
Adjust regulator according to control
adj us t m ent i ns t ruc t i ons i n
Maintenance.
A normally open solenoid must energize to
load compressor; check for proper
operation.
repai r s ol enoi d v al v e (s ee
Check for leaks.
Check that diaphragm and contacts are not
damaged. Replace if necessary.
Section 6
.
S ec t i on 6,
S ec t i on 6).
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