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95-8714
6.3
TROUBLESHOOTING
A Fault status is indicated by a yellow LED and
also by the 4-20 mA output. Refer to Table 9 for
assistance in correcting malfunctions with the
LS2000 Detector.
Fault Condition
Corrective Action
Low 24 Volts
24 Vdc operating voltage is out of range. Verify proper wiring to the detector
and correct voltage output from the power source. Power supply faults are
self-clearing when the condition is corrected. If the fault does not clear,
consult the factory.
Dirty Optics
Perform cleaning procedure, then recalibrate as required. (Refer to
“Maintenance” for details.)
Calibration Fault
If the calibration process is allowed to time-out, the fault is set and can only be
reset with a successful calibration.
Negative Signal Output
This fault is indicated when the signal output drops below –0.5 LFL-m.
Normally detection capability is not compromised in this condition.
The device was probably zero calibrated with background gas present.
If the condition persists, purge with clean air and repeat the zero calibration.
Ensure that the heaters are on and the windows are not fogged.
Calibration Line Active
at Start-up
The only way to clear this fault is to correct the wiring and reapply power.
Be sure that the calibration line is not shorted and that the calibration switch is
open. If the fault does not clear, consult the factory.
Signal Saturation
Add aperture to the transmitter module or adjust lamp voltage if needed.
EE Error
Return unit to the factory.
Other Faults
Consult the factory.
Table 9—Troubleshooting Guide