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11. CLEANING AND MAINTENANCE
a) General
You should calibrate the multimeter once each year to guarantee measuring accuracy for years to come.
Instructions on replacing batteries/fuse are included below.
Regularly check the technical safety of the device and test leads — i.e. auf for damages to the
housing or pinching, etc.
Never operate the meter with the housing open! !RISK TO LIFE!
b) Cleaning
Read and observe the following safety instructions before cleaning the device:
Live parts can be exposed when opening covers or removing parts except when this is possible
by hand.
Disconnect the test leads from the DMM and all test objects before cleaning or maintenance. Turn
the multimeter off.
Do not use any abrasive cleaners, benzine, alcohol or the like for cleaning. Such substances may corrode the me-
ter's surface. Moreover, the fumes are harmful and explosive. Do not use sharp-edged screwdrivers, metal brushes
or similar for cleaning.
Use a clean, lint-free, antistatic and slightly damp cleaning cloth to clean the device, the display and the test leads.
Let the meter dry completely before further use.
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