Section 7
MAINTENANCE
39
atically analyzed before undertaking any repair or
component replacement procedures.
A detailed visual inspection is worth performing for
almost any problems which may prevent unneces-
sary damage to the compressor. Always remember
to:
a. Check for loose wiring.
b. Check for damaged piping.
c. Check for parts damaged by heat or an electrical
short circuit, usually apparent by discoloration or
a burnt odor.
Should your problem persist after making the rec-
ommended check, consult your nearest Sullair rep-
resentative or the Sullair Corporation factory.
TROUBLESHOOTING -- SUPERVISOR II
SYMPTOM (DISPLAY) PROBABLE CAUSE REMEDY
T1 HI Message Discharge Temperature Exceeded
225_F (107_C ) f o r P r e --- A l a r m
Discharge Temperature Exceeded
235_F (113_C) for Shutdown
Ambient Temperature Exceeded Improve local ventilation (i.e.,
105_F(41_C) remote intake of process and/or
cooling air).
Fluid Level in Sump is Too Low Check/correct fluid level.
Thermal Valve Malfunctioned Check/replace thermal valve.
Cooler Fins are Dirty (Air--- cooled only) Clean cooler fins.
Water Flow is Low (Water---cooled Check cooling water supply (i.e.,
Packages Only) closed valves).
Water Temperature is High (Water--- Increase water flow, lower water
Cooled Packages Only) temperature.
Cooler is Plugged (Water---Cooled Clean tubes and/or shell --- if tube
Packages Only) plugging persists, provide cleaner
water.
T1 FAIL Temperature RTD Malfunction Check connections from RTD.
If connection is good, replace RTD.
P1 HI Message Discharge Pressure Exceeded
Shutdown Level Because:
P1 MAX--- 3psi (0.2 Bar) Exceeded
f o r P r e --- A l a r m
P1 MAX Exceeded for Shutdown
Unloading Device (i.e., Blowdown Check operation of unloading device.
Valve) Failed to Operate
Pressure Regulator Adjusted Incorrectly Check operation of pressure regulator.
Solenoid Valve F ailed Check operation of solenoid valve.
to Operate
Control Air Signal Leaks Check tubework feeding control
signal for leaks.
Control Air Signal Filter Clogged Service filter assembly.
P1, P2, P3 FAIL Pressure Transducer Malfunction Check connections from transducer.
If connections are good, replace transducer.
P3 LOW Oil Pressure Falls Below 10 psig (0.7 bar)
or Less than 1/2 of P1 while Compressor
is Running Because:
Oil Filter Clogged Replace filter element.
Sump Oil Level Too Low Replenish oil level.
SEP MNTN Message Plugged Separator Replace separator element.
nP1 > 10 psi (0.7 Bar) Check P1 & P2 pressure transducers.
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