Section 5
MAINTENANCE
23
5.8 TROUBLESHOOTING - GUIDE (CONTINUED)
SYMPTOM
CAUSE REMEDY
MACHINE SHUTS DOWN WITH AIR DE-
MAND PRESENT (cont.)
Cooler plugged Clogged fluid filter, clean the main filter
element and change the bearing filter
element if maintenance indicator shows
aredsignal.
Thermal valve not functioning properly.
Change element.
Defective discharge temperature thermis-
tor switch. Check for a short or open cir-
cuit to the probe and correct wiring, or
also check for short or open circuit to
control card. If current is not present, re-
place the control card. Should the above
checkout normal, it is possibl e that the
thermistor probe is defective.
MACHINE WILL NOT BUILD UP FULL
DISCHARGE PRESSURE
Air demand too great Check service lines for leaks or open
valves.
Dirty air filter Check filter indicator and change or
clean element if required.
Pressure Regulator out of adjustment Adjust regulator according to control ad-
justment instructions in the Maintenance
Section.
Defective Pressure Regulator Check diaphragms and replace if neces-
sary (kit available).
LINE PRESSURE RISES ABOVE CUT-
OUT PRESSURE SET TING ON PRES-
Leak in control system causing loss of
pressure signals.
Check for leaks.
SURE SWITCH
Defective pressure switch Check that diaphragm and contacts are
functioning properly and are not dam-
aged. Replace if necessary.
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 press ur e is exhausted
to the atmosphere when the pressure
switch contacts open or repair or replace
if necessary (kit available).
High Pressure Shutdown Switch is de-
fective or adjustment is incorrect
Re-adjust or replace.
EXCESSIVE COOLANT FLUID CON-
SUMPTION
Clogged return line strainer or orifice Clean strainer (screen replacement kit
available).
Clean orifice.
Separator element damaged or not func-
tioning properly
Change separator.
Leak in lubrication system Check all pipes, connections and com-
ponents.
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