18 • Operation
Model GP-01 Operator’s Manual
Resetting Gas Alarms
To reset a gas alarm, press the POWER/MODE button after the gas
reading falls below the low alarm point.
NOTE: If the gas concentration has returned to normal or has fallen below
the low alarm point, the alarm indications will continue until you
reset the alarm using the POWER/MODE button.
Responding to Alarms
This section describes response to gas, over range, battery, sensor failure,
and system failure alarms.
Responding to Gas Alarms
1. Follow your established procedure for an increasing combustible gas
condition.
2. Reset the alarm by pressing and releasing the POWER/MODE button
after the alarm condition has been cleared.
Responding to an Over Range Alarm
WARNING: An over range condition may indicate an extreme
combustible gas concentration. Confirm the gas
concentration with a different Model GP-01 or with
another gas detecting device.
1. Follow your established procedure for an increasing combustible gas
condition.
Dead Battery Alarm
• Gas reading
replaced by FAIL.
• Battery icon
flashes.
• Double pulsing tone
(two pulses in quick
succession) occurs
once a second.
Sensor Failure
• Gas reading
replaced by FAIL.
• Double pulsing tone
(two pulses in quick
succession) once a
second
System Failure
• Gas reading
replaced by FAIL.
• SYS displays below
FAIL.
• Double pulsing tone
(two pulses in quick
succession) once a
second
Table 4: Alarm Types and Indications
Alarm Type
LCD Indications
Other Indications
