Det-Tronics SW9200x Slickwatch IR Oil Detection System User Manual
Page 17
TROUBLESHOOTING TABLE
SYMPTOM:
Transmitter lamp does not light.
POSSIBLE CAUSE:
No power to transmitter.
CHECK:
Voltage into transmitter. Should be nameplate voltage rating (±10%).
REMEDIAL ACTION:
If wrong voltage, check external fusing or defective power wiring to transmitter.
POSSIBLE CAUSE:
Defective lamp.
CHECK:
Voltage into transmitter before concluding that the lamp is defective.
REMEDIAL ACTION:
See Replacement of Transmitter Lamp procedure.
SYMPTOM:
Transmitter lamp consistently burns out before 6 months.
POSSIBLE CAUSE:
Constant high line voltage.
CHECK:
Voltage into transmitter. Should be nameplate voltage rating (±10%).
REMEDIAL ACTION:
Reduce power line voltage.
POSSIBLE CAUSE:
Excessive vibration or shock at transmitter.
CHECK:
Environment at transmitter.
REMEDIAL ACTION:
Alter mechanical environment at transmitter with vibration isolators, etc.
POSSIBLE CAUSE:
Repeated application and removal of power to the transmitter.
CHECK:
History since installation.
REMEDIAL ACTION:
Maintain power to the instrument at all times.
SYMPTOM:
Transmitter lamp lights, but no output voltage on NUMERATOR relative to SIGNAL
GROUND.
POSSIBLE CAUSE:
No power to receiver.
CHECK:
Voltage into receiver. Should be nameplate voltage rating (±10%).
REMEDIAL ACTION:
If wrong voltage, check external fusing or defective power wiring to receiver.
POSSIBLE CAUSE:
Fuse blown in receiver.
CHECK:
Listen for faint sound of filterwheel motor in receiver.
REMEDIAL ACTION:
If filterwheel is not turning, replace fuse.
POSSIBLE CAUSE:
Filterwheel motor failure.
CHECK:
Is filterwheel rotating?
REMEDIAL ACTION:
If filterwheel does not rotate after replacing fuse, see Replacement of Filterwheel Motor pro-
cedure.
POSSIBLE CAUSE:
Transmitter and receiver not properly aligned.
CHECK:
NUMERATOR voltage when a flashlight or 60W light bulb is held in front of receiver window.
Voltage should increase from zero.
REMEDIAL ACTION:
Repeat Alignment procedure.
SYMPTOM:
NUMERATOR voltage relative to SIGNAL GROUND exceeds 0.75 VDC or drops below
0.25 VDC after proper alignment.
POSSIBLE CAUSE:
Improper Preamplifier Gain setting.
REMEDIAL ACTION:
See Step 3 and Step 5 of Signal Strength Operation/Performance Check.
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