3M GMI PS200 Series, Operation & Maintenance Manual

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5-3
3M™ GMI™ PS200 PORTABLE GAS MONITOR
WARNINGS & FAULTS
64171, Rev. 10/May 2019
• Leave the monitor ON for 30-60 minutes
• Switch OFF then ON
• If ZERO FAULT persists, recalibrate the monitor
• If ZERO FAULT still persists, return the monitor to a 3M GMI approved service/repair facility
5.4. Sensor Faults
If a sensor fault is detected, the backlight illuminates red, audible/visual alarms are activated, and a
wrench symbol is shown next to the faulty sensor.
5.4.1. SENSOR FAULT - LEL OR O
2
If a sensor fault is detected for LEL or O
2
, as illustrated in
Figure 5-6: LEL SENSOR FAULT
, return the
monitor to a 3M GMI approved service/repair facility.
Figure 5-6: LEL SENSOR FAULT
5.4.2. SENSOR FAULT - CO OR H
2
S
If a sensor fault is detected for CO or H
2
S, as illustrated in
Figure 5-7: CO/H
2
S SENSOR FAULT
, allow
the monitor to run in clean air for 20 minutes. If the fault persists, return the monitor to a 3M GMI
approved service/repair facility.
Figure 5-7: CO/H
2
S SENSOR FAULT
5.5. Flow Fault (Pumped Monitors Only)
If a sample fault exists, the monitor displays a FLOW FAULT warning, as shown in
Figure 5-8: FLOW
FAULT
. The display will be red and both the audible alarm and red LED’s will be activated.
Check sample line, filter, or probe for blockage. Clear blockage, then restart pump by pressing and
holding the R button.