3000-4500 USER MANUAL SECTION 6
68
6.10 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 function-
ing 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 Check power supply for 24V DC output.
Replace power supply if necessary.
Low Incoming Voltage Consult power company.
Excessive Operating Pressure Reset. If trouble persists, check that line
pressure does not exceed maximum oper-
ating pressure of the compressor (specified
on nameplate).
Separator Requires Maintenance
Indicated by WS Controller
Replace separator.
Machine Programmed for Wrong
Pressure Setting
Reprogram with WSPC equipped laptop.
Defective Regulator 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 separator/
sump tank pressure to 18 psig (1.2 bar)
when maximum operating pressure is
reached. Repair if defective.
Cooling Water Temperature Too
High
Reduce water temperature to 85F (29.4C)
or less. Water-cooled only.
Cooling Water Flow Insufficient Check water lines and valves (water-cooled
only).
Cooler Plugged Clean tubes. If plugging persists, install
water conditioner (water-cooled only).
Cooling Air Flow Restricted Clean cooler and check for proper ventila-
tion.
Ambient Temperature Is Too High Provide sufficient ventilation.
Low Fluid Level Add fluid.
Clogged Filter Change the fluid filter element.
Thermal Valve Not Functioning
Properly
Replace element.
Water Flow Regulating Valve Not
Functioning Properly
Change (water-cooled only).
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