20
Instruction 3015-4149
SECTION 11
Working with the Fault Screen
From the System Screen press the button adjacent to FAULTS. This takes you to the Fault Screen. The
information displayed on this screen is broken onto two categories – CRITICAL FAULTS and NON
CRITICAL FAULTS.
Critical Faults
•
NO FLOW ON ZONE
– Go to the
System Screen
and press the ZONES key. The zone screen will
display a “NO FLOW” message in each individual zone affected. Check for a blockage in the air
sample line or at the line end filter. Once the blockage has been cleared, the HGM300 will return to
normal operation after the zone has been sampled.
NOTE:
This can take some several minutes since
it is dependent upon how many zones there are and their lengths.
The HGM300 will clear the fault the
next time it polls the effected zone and the RDM800 will return to normal operation the next time that it
polls the HGM300.
•
NO FLOW ON PURGE
– Check the purge line for a blockage. Verify that the length of the purge line
and exhaust line do not exceed 300 feet in length.
•
NO FLOW DETECTED
– Check for proper pump operation. Check the water trap – drain if necessary.
•
CLIPPING FAULT
– The detector voltage may be out of tolerance. Check the
Diagnostic Screen
for
the DET voltage, AVE voltage, and ZERO voltage. Call the factory with this information for further
instructions.
•
REZERO VOLT TOL
– The detector output voltage is out of tolerance. Check the
Diagnostic Screen
for the DET voltage, AVE voltage, and ZERO voltage. Call the factory with this information for further
instructions.
•
TRIGGER FAULT
– No trigger from IR source pulser. Contact factory with all information from the
Diagnostic Screen
for further instructions.
Non Critical Faults
•
BOX TEMP FAULT
– Enclosure’s internal temperature is outside normal range (or IR sensor has
failed). Check the installation to verify that the monitor is not being subjected to extreme temperatures.
Verify that the ventilation holes are not obstructed. Check the
Diagnostic Screen
for the ZERO
temperature, BNCH temperature, and BOX temperature. Call the factory with this information for
further instructions.
•
BENCH TEMP FAULT
– Optical bench is outside of normal operating range (or sensor has failed).
Check the installation to verify that the monitor is not being subjected to extreme temperatures. Check
the
Diagnostic Screen
for the ZERO temperature, BNCH temperature and BOX temperature. Call the
factory with this information for further instructions.
Fault Screen
System Screen
