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Voltcraft VC-450 E Manual

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c) Opening meter
The casing design only permits access to the battery and fuse even when the battery and fuse compartment is
opened.
These measures improve user safety and operational comfort.
Proceed as follows to open it:
- Disconnect all measuring lines from the meter and
switch it off.
- Open the rear standing bracket (N).
- Release the 5 rear battery compartment screws (M)
with a matching screwdriver.
- Pull the battery compartment lid (N) off of the meter
with the standing bracket folded open.
- The fuses and the battery compartment can be ac-
cessed now.
- After opening the battery compartment lid, always
check the rubber seal around the battery and fuse
compartment for contamination and clean it if neces-
sary. This ensures protection against ingressing dust
and water.
- Close the casing again in the reverse order and
screw the battery and fuse compartment closed.
- The meter is ready for use once again.
d) Fuse replacement
The current measurement ranges are protected by high-performance fuses. If measuring in this range is no longer
possible, you have to change the fuse.
The fuses can be checked with the housing closed via the resistance measuring function. Select the meas-
uringfunction“Ω”.Connectthemeasuringjack“Ω”(E)tothemAjack(B)ortheAjack(C)withameasuring
line.
The following measured values should be displayed if the fuses are intact:
mA:<1.5MΩ,A:<5Ω.Whenahighervalueor“OL”isdisplayed,thefusemustbereplaced.
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