Sullair LS-100L Operator's Manual page 53

7.12 TROUBLESHOOTING GUIDE- SUPERVISOR II (CONTINUED)
SYMPTOM
P1 HI Message (CONTINUED)
P1, P2, P3 FAIL
P3 LOW
SEP MNTN Message
COMPRESSOR DOES NOT
BUILD FULL DISCHARGE
PRESSURE
LINE PRESSURE RISES ABOVE
UNLOAD SETTING
EXCESSIVE FLUID CONSUMP-
TION
PROBABLE CAUSE
Discharge Pressure Exceeded
Shutdown Level Because (Cont.):
Solenoid Valve Failed to
Operate
Control Air Signal Leaks
Control Air Signal Filter Clogged
Pressure Transducer Malfunction
Oil Pressure Falls Below 10 psig (0.7
bar) or Less than 1/2 of P1 while
Compressor is Running Because:
Oil Filter Clogged
Sump Oil Level Too Low
Plugged Separator
dP1 > 10 psi (0.7 Bar)
Air Demand Exceeds Supply
Inlet Air Filter Clogged
Inlet Valve Not Fully Open
Pressure Sensor and/or Connections
at Fault
Pressure Sensor P2 at Fault
Unloading Device (i.e., Blowdown
Valve) Failed to Operate
Solenoid Valve Failed to Operate
Control Air Signal Leaks
Control Air Signal Filter Clogged
Damaged or Improperly Gasketed
Separator Element
Fluid System Leaks
Fluid Level Too High
MAINTENANCE
REMEDY
Check operation of solenoid valve.
Check tubework feeding control signal for
leaks.
Service filter assembly.
Check connections from transducer. If con-
nections are good, replace transducer.
Replace filter element.
Replenish oil level.
Replace separator element.
Check P1 & P2 pressure transducers.
Check air service lines for open valves or
leaks.
Check for maintenance
Supervisor display. Inspect and/or change
element.
Check actuation and position.
Check connections from transducer. If ade-
quate, replace transducer.
Check connections from transducer. If ade-
quate, replace transducer.
Check operation of unloading device.
Check operation of solenoid valve.
Check tubework feeding control signal for
leaks.
Service filter assembly.
Inspect separator element and gasket.
Replace if damaged.
Check tube/pipework for leaks.
Drain excess fluid.
Section 7
message on
47