Sullair ES--6 Series Operator's Manual And Parts List page 28

Section 6
MAINTENANCE
TROUBLESHOOTING
SYMPTOM
LI N E P R E S S U R E R I S E S A B O V E
CUT- -OUT PRESSURE SETTING
ON PRESSURE SWITCH
EXCESSIVE COMPRESSOR
FLUID CONSUMPTION
PRESSURE RELIEF VALVE
OPENS REPEATEDLY
LIQUID WATER IN COMPRESSED
AIR LINES
22
PROBABLE CAUSE
D ef ec t iv e S olenoid Valv e
Leak In Control System Causing
Loss Of Pressure Signals
Defective Pressure Switch
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
and Compression Occurs Naturally
REMEDY
R epair s olenoid v alv e ( s ee S ec t ion
Check for leaks.
Check that diaphragm and contacts are not
damaged. Replace if necessary.
Inspect inlet valve and insure free operation
(s ee Sec tion 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.
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
recommended by the filter manufacturer.) Check all
drain traps routinely to insure their proper
operation. Maintain them regularly.
6) .