Sullair LS20TS Operator's Manual And Parts List page 43

8.2 TROUBLESHOOTING GUIDE (CONTINUED)
SYMPTOM
LINE PRESSURE
RISES ABOVE P2
PRESSURE (CONT.)
EXCESSIVE COM-
PRESSOR LUBRI-
CANT CONSUMP-
TION
SUMP PRESSURE
RELIEF VALVE
OPENS REPEATED-
LY
INTERSTAGE
PRESSURE RELIEF
VALVE OPENS
REPEATEDLY
PROBABLE CAUSE
Defective Blowdown Solenoid
Valve
Defective Blowdown Valve
Clogged Return Line or Orifice
Separator Elements Damaged or
Not Functioning Properly
Leak in the Lubrication System
Excessive Fluid Foaming
Fluid Level Too High
Line Pressure Too Low Over
Extended Period
High Pressure Shutdown
Parameter is Out of Adjustment
Defective Pressure Relief Valve
Defective Pressure Transducer
Defective Minimum Pressure
Valve
High Separator Differential (dP1)
Defective Blowdown Valve
Defective Blowdown Solenoid
Valve
Plugged or Frozen Control Lines
Defective Discharge Check Valve
Defective Oil Stop Valve
Defective Pressure Relief Valve
TROUBLESHOOTING
REMEDY
Repair or replace if necessary (kit available).
Check that sump pressure is exhausted to the atmos-
phere when the unload pressure setting on Supervisor
Controller is met, or repair or replace if necessary (kit
available).
Clean strainer (screen and o-ring replace-ment kit avail-
able).
Clean orifice.
Change separator elements.
Check all pipes, connections and components.
Drain fluid and change.
Drain excess fluid.
Increase pressure.
Readjust below pressure relief valve setting.
Replace pressure relief valve.
Recalibrate or replace.
Repair or replace.
Replace separator elements.
Repair or replace (kit available).
Repair or replace (kit available).
Replace or thaw as needed.
Repair or replace (kit available).
Repair or replace (kit available).
Replace pressure relief valve.
Section 8
37