12-9
ALARMSUSER HANDBOOK
12.6 FAULT ALARMS
Refer to Alarms Table 12.1 to identify the audible / visual indication
for any of the following faults.
12.6.1 Low Battery
The battery symbol is displayed on the screen intermittently
with LO. 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 Orange LED ashes.
Recharge the battery or replace the alkaline batteries if using alkaline
batteries.
The Low Battery ag ashes when approximately three (3)
minutes operating time remains. The audible alarm sounds once
every second and the Orange LED illuminates 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 appears.
12.6.2 Zero Fault
A “ZERO FAULT” ag and a ashing spanner symbol appear after
warm-up and after entering a mode if the instrument is switched on
in the presence of gas or the instrument has been unable to zero
all sensors correctly.
The audible alarm sounds, and the orange fault LED ashes. If the
user is in a mode where the faulty sensor is used the orange LED
is on, continuously.
It is strongly recommended the instrument is returned to a gas free
area. Switch the instrument off and then switch on again in clean air.
If the fault persists, return the instrument for service.
The instrument can however still be used to detect and alarm on the
other sensor(s) tted.
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