V!SA - USER HANDBOOK
3.4 FAULT ALARMS
Refer to Alarms Table, on page 2-14 of this handbook, to
identify the audible / visual indication for any of the
following faults.
3.4.1 Low Battery
The "LOW
intermittently on the screen, when the instrument's battery
power is low (i.e. approximately 30 minutes operating
time remaining). The audible alarm sounds, once every
two seconds, and the Red LED's flash. Recharge the
battery or replace the alkaline batteries if using alkaline
batteries.
The "BAT
approximately three (3) minutes operating time remains.
The audible alarm sounds continuously and the Red LED's
illuminate constantly. After three (3) minutes the instrument
automatically switches off.
Note: Both audible and visual gas alarms continue to
operate after the low battery warning message,
"LOW
3.4.2 Zero Fault
Note:
For instruments with CO2 sensor fitted, refer to
paragraph 3.4.3 for details.
A "ZERO FAULT" flag and a flashing spanner symbol
appears after warm-up if the instrument is switched on
in the presence of gas or the instrument has been unable
to zero all sensors correctly.
3-8
BATTERY" flag is displayed,
FAULT" flag shows constantly when
BATTERY", appears.