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11. Cleaning and maintenance
a) General
To ensure accuracy of the multimeter over an extended period of time, it should be cali-
brated once a year.
Apart from occasional cleaning and battery and fuse replacements, the meter requires
no servicing.
Notes on replacing the battery and fuse are provided below.
Regularly check the technical safety of the device and measuring lines,
e.g. check for damage to the casing or squeezing, etc.
The rear of the device has holders with which the measuring lines can be at-
tached to the meter.
The measuring prods can be placed so that they are cleanly put away or at-
tached higher to permit two-handed measurement.
b) Cleaning
Always observe the following safety information before cleaning the device:
Live components may be exposed if covers are opened or parts are removed (unless this can be
done without tools).
The connected lines must be disconnected from the meter and all measuring objects before the
device is cleaned or repaired. Switch off the DMM.
Do not use any abrasive cleaning agents or petrol, alcohol or the like to clean the product. They will damage the
surface of the meter. Furthermore, the fumes are hazardous to your health and explosive. Also do not use any sharp-
edged tools, screwdrivers, metal brushes, etc. for cleaning.
Use a clean, lint-free, antistatic, slightly damp cloth for cleaning the device or the display and the measuring lines.
Allow the product to dry completely before you use it again to conduct measurements.
