Sullair LS-120 series Operators Manual And Parts Lists page 47

8.2 TROUBLESHOOTING GUIDE-STANDARD ELECTRO-MECHANICAL (CONTINUED)
SYMPTOM
LINE PRESSURE RISES ABOVE
CUT-OUT PRESSURE SETTING
ON PRESSURE SWITCH
(CONT.)
EXCESSIVE COMPRESSOR
FLUID CONSUMPTION
PRESSURE RELIEF VALVE
OPEN REPEATEDLY
LIQUID WATER IN COM-
PRESSED AIR LINES
TROUBLESHOOTING- ELECTRO-MECHANICAL
PROBABLE CAUSE
Defective Blowdown Valve
Clogged Return Line 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
Plugged Separator
Water Vapor Condensation from
Cooling and Compression Occurs
Naturally
REMEDY
Check that sump pressure is exhausted to the
atmosphere when the pressure switch con-
tacts open. Repair or replace if necessary (kit
available).
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 and change.
Replace.
Check separator differential.
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 cartridges as rec-
ommended by the filter manufacturer). Check
all drain traps routinely to insure their proper
operation. Maintain them regulary.
Section 8
41