Sullair LS-32, Operator'S Manual And Parts List

Page: 55 / 118

Section 7
MAINTENANCE
49
7.9 TROUBLESHOOTING GUIDE (CONTINUED)
SYMPTOM PROBABLE CAUSE REMEDY
COMPRESSOR WILL NOT BUILD
UP FULL DISCHARGE PRESSURE
(CONTINUED)
LINE PRESSURE RISES ABOVE
UNLOAD P2 PRESSURE SETTING
ON THE SUPERVISOR
EXCESSIVE FLUID CONSUMP-
TION
PRESSURE RELIEF VALVE
OPENS REPEATEDLY
LIQUID WATER IN COMPRESSED
AIR SERVICE LINE
Pressure Regulator Out of Adjustment
Defective Pressure Regulator
Broken Sullicon Spring
Leak in Control System Causing Loss of
Pressure Signals
Defective Solenoid Valve
Defective Blowdown Valve
Ruptured Sullicon Control Diaphragm
Plugged Control Line Filter
Clogged Return Line Strainer or Orifice
Separator Element Damaged or Not
Functioning Properly
Leak in the Lubrication System
Excess Fluid Foaming
Fluid Level Too High
Defective Pressure Relief Valve
Water Vapor Condensation From Cooling
and Compression Occurs Naturally
Adjust regulator according to control adjustment
instructions in the Maintenance Section.
Check diaphragm and replace if necessary (kit
available).
Replace.
Check for leaks.
Check that Sullicon Control lever is moved to
unload stop when Supervisor is in NO LOAD
mode. Repair or replace if necessary (kit avail-
able).
Check that sump pressure is exhausted to the
atmosphere when in the OFF LOAD mode.
Repair or replace if necessary (kit available).
Replace.
Clean or repair if necessary.
Clean strainer (screen with o-ring replacement kit
available)
Clean orifice.
Check Separator Differential (plugged) dP1.
Change Separator
Check all pipes, connections and components.
Drain and change.
Drain excess fluid.
Replace pressure relief valve.
Remove the water vapor from compressed air
prior to distribution through the air system. Check
operation of aftercooler and moisture separator.
Install a compressed air dryer sized for the flow
and dryness level required. (Note: Filters may also
be required to remove particulates, liquid oil
aerosols or for oil vapor removal. Change car-
tridges as recommended by the filter manufactur-
er.) Check all drain traps routinely to insure their
proper operation. Maintain them regularly.