Battery Replacement - Fluke COMARK BT42 Mode D'emploi

Maintenance
Cleaning
BT40 series thermometers are dust and
splash proof and will withstand harsh
environments. Use a damp cloth or warm
soapy water to remove deposits and
prevent them from hardening or becoming
sticky.
Use only domestic kitchen cleaners or
mild detergents to clean this instrument.
Do not use aggressive cleaning
chemicals or solvents, these will attack
plastics and cause damage.
Caution: Do not place any BT40 series
thermometers in a dishwasher.

Battery Replacement

The low battery symbol appears on
the display when the battery voltage
has reduced. Battery replacement is
recommended at this time.
To replace the battery, remove the battery
cover retaining screw on the rear of
the instrument, using the correct size
*screwdriver. Remove the two cells, wait
for a minimum of 30 seconds and replace
with Alkaline or Lithium (L91) cells. Be
careful to observe the correct polarity.
Take care not to over-tighten the screw
when refitting the cover.
Note: The BT40 series thermometers
will not work if the battery compartment
is incorrectly fitted or missing. In this
instance, the display will show 'OPEn'.
Please note the small pip on the inside of
the battery cover, which must fit into the
hole provided in the back of the case.
* Philips No 1 or 5mm flat blade screwdriver.