Troubleshooting Guide - Sullair 3000P User Manual

3000-4500 USER MANUAL

6.10 TROUBLESHOOTING GUIDE

SYMPTOM
Compressor Will Not Start
Compressor Shuts Down With
Air Demand Present
68
PROBABLE CAUSE
Main Disconnect Switch Open
Line Fuse Blown
Motor Starter Overload Tripped
Low Incoming Line Voltage
Loss of Control Voltage
Low Incoming Voltage
Excessive Operating Pressure
Separator Requires Maintenance
Indicated by WS Controller
Machine Programmed for Wrong
Pressure Setting
Defective Regulator Valve
Defective Blowdown Valve
Cooling Water Temperature Too
High
Cooling Water Flow Insufficient
Cooler Plugged
Cooling Air Flow Restricted
Ambient Temperature Is Too High
Low Fluid Level
Clogged Filter
Thermal Valve Not Functioning
Properly
Water Flow Regulating Valve Not
Functioning Properly
REMEDY
Close switch.
Replace fuse.
Reset. Should trouble persist, check
whether motor starter contacts are function-
ing properly.
Check voltage. Should voltage check low,
consult power company.
Check power supply for 24V DC output.
Replace power supply if necessary.
Consult power company.
Reset. If trouble persists, check that line
pressure does not exceed maximum oper-
ating pressure of the compressor (specified
on nameplate).
Replace separator.
Reprogram with WSPC equipped laptop.
Regulator valve should cause inlet valve to
close when the pressure switch contacts
open. Repair if defective.
Blowdown valve should exhaust separator/
sump tank pressure to 18 psig (1.2 bar)
when maximum operating pressure is
reached. Repair if defective.
Reduce water temperature to 85F (29.4C)
or less. Water-cooled only.
Check water lines and valves (water-cooled
only).
Clean tubes. If plugging persists, install
water conditioner (water-cooled only).
Clean cooler and check for proper ventila-
tion.
Provide sufficient ventilation.
Add fluid.
Change the fluid filter element.
Replace element.
Change (water-cooled only).
SECTION 6