22 • Chapter 3: Measuring Mode
GasWatch 3 for CO and O
2
Responding to Alarms
This section describes response to gas, over range, battery, sensor failure, clock 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 as necessary or allowed.
a. If
LATCH
is set to
ON
(factory setting) in Maintenance Mode, the gas reading must
fall below an alarm setting (or rise above for an oxygen Warning or Alarm) before you
can reset the alarm condition using POWER/MODE or AIR.
If
Password Protection
is set to
On
using the GW-3 Config Program, you must press
AIR and POWER/MODE at the same time and then enter a user-set password to reset
the gas alarm.
b. If
LATCH
is set to
OFF
in Maintenance Mode, the alarm condition automatically
resets when gas reading falls below (or rises above for an oxygen Warning or Alarm)
an alarm setpoint.
Responding to Over Range Alarms
WARNING:
An over range condition may indicate an extreme carbon monoxide or
oxygen concentration or an explosive concentration. Confirm the gas
concentration with a different GasWatch 3 or with another gas detecting
device.
AVERTISSEMENT:Un dépassement de la plage peut indiquer une concentration extrême
de monoxyde de carbone ou d'oxygène ou une concentration d'explosif.
Confirmez la concentration de gaz avec un GasWatch 3 différent ou avec
un autre dispositif de détection de gaz.
1. Follow your established procedure for an extreme gas condition.
2. Reset the alarm using POWER/MODE or AIR once the alarm condition clears if
LATCH
is set to
ON
(factory setting) in Maintenance Mode.
If
Password Protection
is set to
On
using the GW-3 Config Program, you must press AIR
and POWER/MODE at the same time and then enter a user-set password to reset the over
range alarm.
3. Calibrate the GasWatch 3 as described on pg.43.
4. If the over range condition continues or if you are not able to successfully calibrate the
unit, you may need to replace the sensor.
5. If the over range condition continues after you replace the sensor, contact RKI
Instruments, Inc. for further instructions.
