Heath Consultants GT Series - Manual (Page 60)

5-6
USER HANDBOOK
Note 2: If no button is pressed, after 30 seconds the
display reverts to live reading.
5.5.3 Alarm Acknowledge
HIHI , LOLO for O
2
(if fitted), and Time Weighted
Average (TWA) alarms are latching by default. The AL /
ACK will only cancel the alarms if all gases have returned
to “safe” levels.
An option of
HI , or LO for O
2
(if fitted), non latching
alarmsare available, as follows:
When the reading drops below the alarm level, the alarm
will automatically cancel.
Alarms can also be muted for one minute.
To acknowledge for one minute:
• Press and hold the LH button .
If an alarm occurs in CSM, the user should go into fresh
air until the gas concentration falls below the alarm level
and is cancelled.
Menu mode can still be entered while an alarm is active in
CSM.
To enter menu mode:
• Press and hold the LH button and the RH but-
ton simultaneously, for 5 seconds.