Section 7
MAINTENANCE
39
7.7 TROUBLESHOOTING GUIDE (CONTINUED)
SYMPTOM PROBABLE CAUSE REMEDY
P1 HI MESSAGE (continued) Pressure Regulator Maladjusted Check operation of pressure regulator.
Solenoid Valve Failed 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.
SEP MNTN MESSAGE Plugged Separator Replace separator elements.
dP1 > 10 PSI (0.7 Bar) Check P1 and P2 pressure transducers.
COMPRESSOR DOES NOT Air Demand Exceeds Supply Check air service lines for open
BUILD FULL DISCHARGE valves or leaks.
PRESSURE
Inlet Air Filter Clogged Check for maintenance message
on Supervisor display. Clean or
change element.
Inlet Valve Not Fully Open Check actuation and butterfly disc
position.
Pressure Sensor and/or Connections Check connections from trans--
at Fault ducer. If adequate, replace trans--
ducer.
Blowdown Valve Leaking Replace valve.
LINE PRESSURE RISES ABOVE Pressure Sensor P2 at Fault Check connections from trans--
UNLOAD SETTING ducer. If adequate, replace
transducer.
Unloading Device (i.e., Blowdown Check operation of unloading device
Valve, Sullicon Actuator, Optional See Section 7.5.
Spiral V alve) Failed to Operate
Pressure Regulator Maladjusted Check operation of pressure
regulator .
Solenoid Valve Failed Check operation of solenoid
to Operate valve -- See Section 7.5.
Control Air Signal Leaks Check tubework feeding control
signal for leaks.
Control Air Signal Filter Clogged Service filter assembly -- See
Section 7.5.
EXCESSIVE FLUID CONSUMPTION Clogged Return Line Strainer or Clean strainer -- screen and o--ring
Orifice replacement kit available. Clean
orifice.
Damaged or Improperly Gasketed Inspect separator elements and
Separator Elements gaskets. Replace if damaged.
Fluid System Leaks Check tube/pipework for leaks.
Fluid Level Too High Drain excess fluid.
Excessive Fluid Foaming Drain and change fluid.
NOTE ON TRANSDUCERS:
Whenever a sensor is suspected of fault, the recom-
mended cause of action is to measure the signal
(pressure, temperature, etc.) with an alternate cali-
brated instrument and compare readings. If conflict-
ing, the electrical and/or tubing connections should
be inspected, and if no faults are evident, then re-
place the sensor and re--evaluate against the cali-
brated instrument.
7.8 CALIBRATION
The Supervisor II has software calibration of the
pressure and temperature probes. This calibration
affects the offset but not the slope of the pressure
and temperature calculations. Because of this, the
most accurate method is to heat or pressurize the
transducer to its operating value. If this is too difficult,
room temperature/open atmosphere calibration is
adequate. Calibration may only be done while ma-
chine is stopped and unarmed.
To enter calibration mode, you must press the follow-
ing keys in sequence while in the default status dis-
play mode: “
”, “Y”,DSP,“ B ” ,PRG Once in
calibration mode, you will see a screen like the follow-
ing:
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