SECTION 6 1100E, 1500E, 1800E USER MANUAL
55
6.9 TROUBLESHOOTING GUIDE
SYMPTOM PROBABLE CAUSE REMEDY
Compressor will not start Main disconnect switch open Close switch.
Line fuse blown Replace fuse.
Motor starter overload tripped Reset. Should trouble persist, check
whether motor starter contacts are
functioning properly.
Low incoming line voltage Check voltage. Should voltage check low,
consult power company.
Compressor Shuts Down With
Air Demand Present
Loss of control voltage Reset. If trouble persists, check that line
pressure does not exceed maximum
operating pressure of the compressor
(specified on nameplate).
Low incoming line voltage Consult power company.
Excessive Operating Pressure Separator requires maintenance; Check
maintenance indicator under full load
conditions.
High pressure setting in WS Controller set
wrong; reset.
Defective valve; regulator valve should
cause inlet valve to close when the
pressure
switch contacts open. Repair if defective.
Defective blowdown valve; blowdown valve
should exhaust the separator/sump
pressure to 25 psig (1.7 bar) when
maximum operating pressure is reached.
Repair if defective.
Discharge Temperature Switch
Open
Cooling air flow restricted
Ambient temperature is too high
Low fluid level
Clogged filter
Thermal valve not functioning properly
Clean cooler and check for proper
ventilation.
Provide sufficient ventilation.
Add fluid.
Change the fluid filter element.
Replace element.
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