VOLTCRAFT 1693351, Руководство по эксплуатации

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11. Cleaning and maintenance
a) General
The multimeter should be calibrated once a year to ensure that measurements remain accurate.
The multimeter does not need to be serviced (apart from occasional cleaning and replacing the battery).
Refer to the following sections for instructions on how to change the battery.
Regularly check the device and test leads for signs of damage.
b) Cleaning
Always observe the following safety information before cleaning the device:
Opening covers on the product or removing parts that cannot be removed by hand may expose
voltage-carrying components.
Before cleaning or servicing the multimeter, disconnect all cables from the multimeter and all
measured objects. Switch off the multimeter.
Do not use abrasive detergents, petrol, alcohol or other similar chemicals to clean the device. These may corrode
the surface of the multimeter. In addition, the vapours emitted by these substances are explosive and harmful to your
health. Do not use sharp-edged tools, screwdrivers or metal brushes to clean the device.
Use a clean, damp, lint-free and antistatic cloth to clean the multimeter, display and test leads. Allow the multimeter
to dry out completely before using it again.
c) Inserting/changing the batteries
The multimeter is powered by three 1.5 V AAA batteries. Insert three new batter-
ies before using the multimeter for the first time or when the low battery symbol
( ) is displayed.
Proceed as follows to insert/replace the battery:
• Disconnect the connected measuring leads from the measuring circuit and
from the multimeter. Disconnect the multimeter from all measured objects.
Switch off the multimeter.
• Remove the rear screw on the battery compartment cover (M) using a suitable
Phillips screwdriver. The screw cannot be completely removed. Remove the
battery compartment cover.
• Replace all used batteries with new ones of the same type. Insert the new bat-
teries into the battery compartment in the correct polarity. Refer to the polarity
markings in the battery compartment.
• Carefully replace the battery compartment cover.