Sullair ES-6 5H Operator's Manual And Spare Parts List page 30

Section 6
MAINTENANCE
6.8 TROUBLESHOOTING GUIDE (CONTINUED)
SYMPTOM
LINE PRESSURE RISES ABOVE
CUT -- OUT PRESSURE SETTING
ON PRESSURE SWITCH (cont.)
EXCESSIVE COMPRESSOR
FLUID CONSUMPTION
PRESSURE RELIEF VALVE
OPENS REPEATEDLY
LIQUID WATER IN COMPRESSED
AIR LINES
24
PROBABLE CAUSE
Inlet Valve Stuck Open
Clogged Return Line
Separator Element Damaged Or
Not Functioning Properly
Leak In The Lubrication System
Excess Fluid Foaming
Fluid Level Too High
Shaft Seal Failure
Compressor Operating Pressure
Too High
Defective Pressure Relief Valve
Water Vapor Condensation From Cooling Remove the water vapor from compressed air prior
and Compression Occurs Naturally
REMEDY
Inspect inlet valve and insure free operation
(s ee Section 6).
Remove element cover and clean orifice.
Change separator element.
Check all pipes, connections and
components.
Drain and change.
Drain excess.
Replace shaft seal.
See Symptom "Line Pressure Rises Above
Cut--out Pressure Setting on Pressure
Switch" above.
Replace pressure relief valve.
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
recommended by the filter manufacturer.) Check all
drain traps routinely to insure their proper
operation. Maintain them regularly.