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USER HANDBOOK
3. If a “ZERO FAULT” message and a spanner symbol (not
ashing) appears above gas type, as shown in Fig. 3.10,
then the sensor requires replacement or an electrical
fault exists.
Fig. 3.10 Sensor Fault
Note: If the faults remain, return the instrument to an
approved Service / Repair facility.
3.4.5 Sample Fault (Pumped Instruments Only)
If the pump symbol changes to the symbol shown in Fig.
3.11, a “FLOW FAULT” message is displayed and an audible
alarm and Red LED’s are activated, then a sample fault or
ow fail exists.
Fig. 3.11 Sample Fault
Check sample line, sample lter or probe for blockage, if
applicable. Clear the blockage, then restart the pump by a
press and hold of the button.
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