Sullair LS-12 Operators Manual And Parts Lists page 33

Section 6
MAINTENANCE
TROUBLESHOOTING (CONTINUED)
SYMPTOM
LINE PRESSURE RISES ABOVE
CUT---OUT PRESSURE SETTING ON
PRESSURE SWITCH
(continued)
EXCESSIVE COMPRESSOR FLUID
CONSUMPTION
PRESSURE RELIEF VALVE OPEN
REPEATEDLY
28
PROBABLE CAUSE
Defective Solenoid Valve
Defective Blowdown Valve
High Pressure Shutdown Switch Is
Defective Or Incorrectly Adjusted
Clogged Return Line Or Orifice
Separator Element Damaged Or
Not Functioning Properly
Leak In The Lubrication System
Excess Fluid Foaming
Fluid Level Too High
High Pressure Shutdown Switch Is
Defective Or Out Of Adjustment
(135 psig [9.3bar]).
Defective Pressure Relief Valve
Plugged Separator Elements
REMEDY
Check that Sullicon Control lever is moved to
unload, stop when the pressure switch
contacts open. Repair or replace it if neces---
sary (kit available).
Check that sump pressure is exhausted to
the atmosphere when the pressure switch
contacts open. Repair or replace if neces---
sary (kit available).
Readjust or replace.
Clean strainer (screen and o---ring replace---
ment kit available).
Clean orifice.
Change separator.
Check all pipes, connections and compo---
nents.
Drain and change.
Drain excess fluid.
Readjust below pressure relief valve setting
(175 psig [12.1bar]).
Replace.
Check separator differential.