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GASURVEYOR 7B-500R - USER HANDBOOK
Operator Messages / Fault Flags
Various messages can appear on the display to indicate
instrument status.
‘SAMPLE’
This indicates that the pump is running and the instrument is
sampling. Fast flash when pump is set to Hi-speed.
‘OFF’
This indicates that the instrument is about to switch off.
This
command can be cancelled by a single press of any button.
‘SAMPLE FAULT’
This indicates a problem with the instrument’s flow due to the
sample path being blocked, water ingress, a blocked filter or
pump failure.
The pump will switch off (
except in CSM mode
). The sample
path should be checked and
pressed to clear the fault
and re-start the pump.
‘CHECK ZERO’
This indicates gas is present during instrument warm-up.
Switch off the instrument and switch on again in fresh air.
‘ZERO FAULT’
This indicates a gas range is out-with its zero calibration
limits. Switch the instrument off and then on again in fresh air.
If the fault does not clear, return the instrument for servicing.
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