Operator`s manual

Page 13
BATTERY TEST
GENERAL: The BW DEFENDER continuously monitors the performance and
condition of its battery. During normal operation, the unit displays “Battery OK” in the
bottom left hand corner of the LCD display.
LOW BATTERY ALARM: Should the unit
detect a battery in the early stages of
running down, the unit will emit a low
battery warning alarm. (See page 14.) This
warning will persist until the battery in the
unit is replaced, or the battery is nearly
dead.
If the low battery condition persists long
enough, the battery will be in danger of
running down to the point where the unit
can no longer accurately measure gas.
Once this happens, the unit will execute an
automatic shutdown (see below).
AUTOMATIC SHUTDOWN
AUTO-SHUTDOWN: Should the battery
be in immediate danger of dropping below
the minimum operating voltage, the
BW DEFENDER will automatically shut
down. Auto-Shutdown is preceded by
approximately 30 minutes of low battery
alarm.
Auto-Shutdown is announced by:
a) 8 beeps and flashing alarm LED's.
b) The unit will turn off the LCD display
except for the “BATTERY LOW” icon,
which will flash periodically to remind
you that the unit is in need of a charged
battery.
25 10
Replaceable Sensor Screens
#M1785