Sullair LS20 Operator's Manual And Parts List page 53

9.2 TROUBLESHOOTING GUIDE- 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
(I) Mixing of other lubricants within the compressor unit will void all warranties!
TROUBLESHOOTING- ELECTRO-MECHANICAL
PROBABLE CAUSE
Plugged Control Line Strainer
Defective Blowdown Valve
Clogged Return Line or Orifice
Separator Element Damaged or Not
Functioning Properly
Leak in the Lubrication System
Excess Fluid Foaming
Excess Fluid Foaming
Fluid Level Too High
Defective Pressure Relief Valve
Plugged Separator
Water Vapor Condensation from
Cooling and Compression Occurs
Naturally
Section 9
REMEDY
Clean strainer (screen and o-ring replace-
ment 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).
Clean strainer (screen and o-ring replace-
ment kit available). Clean orifice.
Change separator (I).
Check all pipes, connections and compo-
nents (I).
Drain and change (I).
Drain and change (I).
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 a level
required. (Note: Filters may also be required
to remove particulates, liquid oil aerosols or
for oil vapor moval. Change cartridges as
recommended by the filter manufacturer).
Check all drain traps routinely to insure their
proper operation. Maintain them regularly.
47