Section 8
TROUBLESHOOTING
38
8.2 TROUBLESHOOTING (CONTINUED)
SYMPTOM PROBABLE CAUSE REMEDY
COMPRESSOR SHUTS DOWN Discharge Temp erature Switch Therma l valve not functioning properly;
WITH AIR DEMAND PRESENT Open replace element (air--cooled only).
Water flow regulating valve not functioning
properly; change (water--cooled only).
Defective discharge temperature switch;
check for a short or open circuit to probe
and correct wiring.
COMPRESSOR WILL NOT BUILD Air De mand is Too Great Check service lines for leaks or open
UP FULL DISCHARGE PRESSURE valves.
Dirty Air Filter Check the filter indicator and change
if required.
Pressure Regulator Out of Adjust regulator according to control
Adjustment adjustment instructions in the Maintenance
section.
Defective Pressure Regulator Check diaphragm and replace if necessary
(kit available).
Defective or Dirty Inlet Valve Check that valve fully opens when full air
demand is present. Repair or clean as
necessary.
LINE PRESSURE RISES ABOVE Leak in Control System Causing
CUT--OUT PRESSURE SETTING Loss of Pressure Signals Check for leaks.
ON PRESSURE SWITCH
Defective Pressure Switch Check that diaphragm and contacts are not
damaged. Replace if necessary .
Defective Solenoid Valve Repair kit available.
Defective Blowdown Valve Check that sump pressure is exhausted to
the atmosphere when the pressure switch
contacts open or repair or replace if
necessary (kit available).
EXCESSIVE COMPRESSOR FLUID Separator Element Damaged or
CONSUMPTION Not Functioning Properly Change element.
Leak in the Lubrication System Check all pipes, connections and
components.
Excess Fluid Foaming Drain and change.
Fluid Level Too High Drain to correct level.
PRESSURE RELIEF VALVE Defective Pressure Relief Valve Replace pressure relief valve.
OPEN REPEATEDLY Separator Differential (plugged) Replace Separator
LIQUID WATER IN COMPRESSED Water Vapor Condensation From Cooling Remove the water vapor from compressed
AIR LINES and Compression Occurs Naturally 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. Main--
tain them regularly.
8.3 OPTIONAL SUPERVISOR II
TROUBLESHOOTING INTRODUCTION
The information contained in the Troubleshooting
chart is based upon both the actual applied situa-
tions and extensive testing at the factory. It contains
symptoms and usual causes for the described prob-
lems. However DO NOT assume that these are the
only problems that may occur. All available data
concerning the trouble should be systematically
analyzed before undertaking any repair or compo-
nent replacement procedures.
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