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GMC-I Messtechnik GmbH
11
Maintenance
11.1
Battery and Rechargeable Battery Operation
When only one filled segment remains in the battery symbol,
install a new set of batteries or charge the rechargeable batteries.
Check to make sure that no leakage has occurred at batteries or
rechargeable batteries at short, regular intervals, or after the
instrument has been in storage for a lengthy period of time.
Note
We recommend removing the batteries during lengthy
periods of non-use (e.g. vacation). This prevents exces-
sive battery depletion or leakage, which may result in
damage to the instrument under unfavorable conditions.
If leakage has occurred, the electrolyte must be carefully and
completely removed with a damp cloth before installing new bat-
teries.
Replacing the Batteries
See section 3.2 and section 11.3.
11.2
Fuses
If a mechanical or electronic fuse has blown due to faulty opera-
tion or overload depending on the measuring function, the
ZERO/
FUSE LED
blinks. The instrument’s voltage measuring ranges are
nevertheless still functional.
11.2.1 Fuse Link – ZERO/FUSE LED
This fuse is active in all resistance measuring ranges except for
voltage measurement. A replacement fuse is included in the bat-
tery compartment (FF315mA/1000V).
Attention!
!
Disconnect the instrument from the measuring circuit be-
fore opening the battery compartment lid in order to re-
place the fuse (refer to page 5 for location)!
Checking the Fuse
If a resistance measuring range is selected with the rotary switch
and measurement is started with a blown or defective fuse in the
instrument, the
ZERO/FUSE LED
blinks. Prerequisite: The
+
and
COM
measurement jacks are not short circuited.
After eliminating the cause of error and replacing the defective
fuse, the
ZERO/FUSE LED
goes out after the instrument has once
again been switched on from rotary switch position
OFF
.
Attention!
!
Incorrect fuses may cause severe damage to the instru-
ment.
Only original fuses from GMC-I Messtechnik GmbH as-
sure the required protection by means of suitable blow-
ing characteristics.
Short-circuiting of fuse terminals or the repair of fuses is
prohibited!
The instrument may be damaged if fuses with incorrect
ampere ratings, breaking capacities or blowing charac-
teristics are used!
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