Voltmaster DMM 1, Operating Instructions Manual

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Maintenance
The instrument does not require special maintenance when used as specified in these operat-
ing instructions.
Cleaning
Use a damp cloth and mild household detergent to clean the instrument should it become soiled
through daily use. Never use aggressive cleaning agents or solvents to clean the instrument.
Replacing the battery
Replace the batteries when the battery symbol appears on the display. Remove the test
leads from the instrument before changing the batteries!
Remove the three screws on the rear, open the battery compartment and remove the discharged
battery. Insert new batteries (2 x 1.5 V AA). Replace the battery compartment and screw tight.
Only use the batteries specified!
Batteries must not be disposed of with normal domestic waste! Observe the stat-
utory regulations pertaining to disposal!
Changing the fuse
Remove the three screws on the rear, open the battery compartment and remove the fuse.
Insert a new fuse (F 10A). Replace the battery compartment and screw tight.
Only use the fuses specified!
The following measurement categories have been defined
in accordance with EN 61010-1:
Measurement category CAT II
Measurements on circuits that are directly electrically connected to the network, via plugs in
the home, office and laboratory.
Measurement category CAT III
Measurements on building installations: fixed consumer units, distributor connection, equip-
ment fitted permanently to the distributor
Measurement category CAT IV
Measurements at the source of the low voltage installation: meters, primary surge protection,
mains connection.