Instruction Manual

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21. MAINTENANCE
Properly us ed, the th ermome ter
should maintain calibr ation in defi n itel y
and not require service other tha n
occasional cleaning of the housing and
changing
of the batteries.
22. CLEANING
WARNING:
TO PREVENT IGNITION OF A
HAZARDOUS AT
M OSPHERE BY
E
L E C TROSTATI C DISCHARGE,
CLEAN WITH DAMP CLOTH.
Do not clean wi th abrasives or
solven
ts. Use mild deter ge nts, never
immerse
nor use excessive fluid.
23. BATTERIES
If there is no display when the
thermometer is turned on, check the
cond
ition of th e three AA ba tteries.
Also
check that th e batter y ter minals
are clean and batteries are properly
install
ed. If replacement is necessary ,
refer to the BATTERY
INSTALLATION AND
REPLA
C EMENT se ction for the
replacemen t proced ure.