Sullair TSR20, User Manual

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TSR32 USER MANUAL R00 SECTION 6
44
Compressor Shuts Down With
Air Demand Present Loss of control voltage Check incoming power
Low incoming voltage Check control fuses and wiring. Consult power
will provide indication of most maintenance
problems if control power has not been lost.
Shutdowns will occur upon a faulty condition or
a bad sensor condition.
Excessive operating pressure Check maximum P2 pressure setting.
HIGH PRESS P1 display; Max P1 pressure
may be set too low. Consult factory for
recalibration.
Defective solenoid valve; solenoid valve
should cause Sullicon Control lever to move to
unload stop when the unload pressure setting
P2A is exceeded. Repair if defective.
Defective blowdown valve; blowdown valve
should exhaust sump pressure to 30 psig (2.1
bar) for integrated coolers; 50 psig (3.4 bar) for
remote coolers when maximum operating
pressure is reached. Repair if defective.
Open or shorted P1, P2, P3 or P4 sensor
message; replace sensor indicated.
Operating lever of inlet butterfly valve is loose
on valve shaft. Reposition the valve plate and
tighten lever set screw.
HIGH TEMP T1 or T3 Message
Displayed 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 fluid filter; change the fluid filter
element as indicated by Supervisor
Thermal valve not functioning properly; replace
element.
Open or shorted T1 or T2 sensor; check for a
short or open circuit to probe and correct
wiring.
Low fluid pressure (LOW
PRESSURE P3 DISPLAY) Check fluid level.
Check for clogged fluid filter.
Cooling fan motor (FAN OL
display) Check the cooling fan motor.
Table 6-1: Troubleshooting Guide
SYMPTOM PROBABLE CAUSE REMEDY