04 Series for CO(-H2)
Chapter 3: Measuring Mode • 23
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.
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 before you can reset the alarm condition using POWER
MODE or AIR.
If
Password Protection
is turned
On
(factory setting is
Off
) using the 04 Series Setup
Program, you must press POWER MODE and AIR at the same time and then enter a
user-set password to reset an alarm condition. When the password screen appears,
adjust each digit with the AIR button and press and release the POWER MODE button
to move on to the next digit. Once the password is entered, the alarm condition resets.
b. If
LATCH
is set to
OFF
in Maintenance Mode, the alarm condition automatically
resets when gas reading falls below an alarm setpoint.
Responding to an H2 RICH Alarm
The H2 RICH alarm automatically clears once the hydrogen level decreases below 2000 ppm
(parts per million).
Responding to Over Range Alarms
WARNING:
An over range condition may indicate an extreme carbon monoxide
concentration or an explosive concentration. Confirm the gas
concentration with a different CO-04C or with another gas detecting
device.
AVERTISSEMENT:Un dépassement de la plage peut indiquer une concentration extrême
en monoxyde de carbone ou une concentration en explosif. Confirmez la
concentration de gaz avec un CO-04C différent ou avec un autre dispositif
de détection de gaz.
1. Follow your established procedure for an extreme gas condition.
0000
PASS-W
