Section 6
MAINTENANCE
33
TROUBLESHOOTING (continued)
SYMPTOM PROBABLE CAUSE REMEDY
Compressor will not build up
full discharge pressure Air demand is too great Check service lines for leaks or open valves.
Dirty air filter Check the filter gauge and change or clean
element if required.
Pressure regulator out of adjustment Adjust regulator according to control
adjustment instructions in the Maintenance
section.
Defective p ressure regulator Check diaphragms and replace if
necessary (kit available).
Line pressure rises above
cut--- out pressure setting on
pressure switch Leak in control system causing
loss of pressure signals Check for leaks.
Defective pressure switch Check that diaphragm and contacts are not
damaged. Repair or replace if necessary
(kit available).
Defective pilot valve Check that Sullicon Control lever is moved
to unload stop when the pressure switch
contacts open. Repair or replace if
necessary (kit available).
Defective blowdown valve Check that sump pressure is exhausted to
the atmosphere when the pressure switch
contacts close. Repair or replace if
necessary (kit available).
High pressure shutdown is
defective or adjustment is incorrect Readjust or replace.
Excessive compressor fluid
consumption Clogged return line strainers,
filters or orifices Clean strainer (screen and o---ring replace---
ment kit available).
Clean orifice.
Change element on separator tank return
line filter.
Separator element damaged or
not functioning p roperly Change separator.
Leak in the lubrication system Check all pipes, connections and
components.
Pressure relief valve op en
repeatedly High pressure shutdown switch is
defective or out of adjustment
(135 PSIG [932kPa]). Readjust below pressure relief valve setting
or replace.
Defective pressure relief valve Replace.
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