32 CHAPTER 5: MAINTENANCE
087-0065 REV B SCOTT SAFETY
5 After a successful calibration, the monitor LCD reads ZERO PASS, then press
right button or wait 60 seconds to go to span calibration.Verify the device responds
to target gas and activates 1 green LED flash every 5 seconds, 1 sounding beep
every 5 seconds, and 1 vibration every 5 seconds.
6 After an unsuccessful calibration, the monitor LCD reads FAIL. Verify the device
activates 1 red LED flash per second, 1 sounding beep per second and 1 vibration
per second.
Span calibration is not required for the O
2
sensor.
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