RKI Instruments GasWatch 2 Manual - Manual (Page 20)

15 • Operation GasWatch 2 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 (or above for the GW-2X). If a TWA
or STEL alarm has been activated, it cannot be reset unless you turn off
the unit.
NOTE: Even though the gas concentration may have returned to normal
or may have fallen below the alarm point, the alarm indications will
continue until you have reset the alarm using the MODE/POWER
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 gas condition or a
decreasing oxygen condition.
2. Reset the alarm using the POWER/MODE button once the alarm
condition has been cleared.
Responding to an Over Range Alarm
WARNING: An over range condition may indicate an extreme toxic
gas or oxygen concentration. Confirm the gas
concentration with a different GasWatch 2 or with another
gas detecting device.
1. Follow your established procedure for an increasing gas condition.
2. Reset the alarm using the MODE/POWER button once the alarm
condition has cleared.
3. Calibrate the GasWatch 2 as described in the calibration section of this
manual.
4. If the over range condition continues, you may need to replace the
sensor.
5. If the over range condition continues after you have replaced the
sensor, contact RKI Instruments, Inc. for further instructions.