- 29 -
21. MAINTENANCE
Properly used, the thermometer
should maintain calibration indefinitely
and not require service other than
occasional cleaning of the housing and
changing of the batteries.
22. CLEANING
WARNING:
TO PREVENT IGNITION OF A
HAZARDOUS ATMOSPHERE BY
ELECTROSTATIC DISCHARGE,
CLEAN WITH DAMP CLOTH.
Do not clean with abrasives or
solvents. Use mild detergents, never
immerse nor use excessive fluid.
23. BATTERIES
If there is no display when the
thermometer is turned on, check the
condition of the three AA batteries.
Also check that the battery terminals
are clean and batteries are properly
installed. If replacement is necessary,
refer to the BATTERY
INSTALLATION AND
REPLACEMENT section for the
replacement procedure.
