Maintenance; Battery Replacement; Fuse Replacement - Benning IT 105 CH Notice D'emploi

9. Maintenance

Before opening the BENNING IT 105, ensure that it is not connected to a source of voltage!
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Electrical danger!
Any work required on the BENNING IT 105 when it is under voltage must be done only by a qualified
electrician. Special steps must be taken to prevent accidents.
Before opening the BENNING IT 105, remove it from all sources of voltage as follows
- Turn the rotating switch 1 to "OFF".
- Disconnect all connecting cables from the device.
9.1 Securing the installation tester
Under certain circumstances, the safety of the BENNING IT 105 can no longer be guaranteed. This may
be the case if:
- there are visible signs of damage on the unit,
- errors occur in measurements,
- the unit has been stored for a long period of time under the wrong conditions, and
- if the unit has been subjected to rough handling during transport.
In these cases, the BENNING IT 105 must be switched off immediately, removed from the measuring points
and secured to prevent it from being used again.
9.2 Cleaning
Clean the outside of the unit with a clean dry cloth. (Exception: any type of special cleaning cloth). Never
use solvents or abrasives to clean the testing unit. Ensure that the battery compartment and the battery
contacts have not been contaminated by electrolyte leakage.
If any electrolyte or white deposits are seen near to the battery or in the battery compartment, remove
them with a dry cloth, too.

9.3 Battery replacement

Before opening the BENNING IT 105, ensure that it is not connected to a source of voltage!
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Electrical danger!
The BENNING IT 105 is powered by six 1.5 V mignon batteries (IEC LR6/ type AA).
Battery replacement is required as soon as the battery symbol I is flashing on the display.
Proceed as follows to replace the batteries (see figure 8):
- Turn the rotating switch 1 to "OFF".
- Lay the BENNING IT 105 face down and release the screws of the battery compartment cover.
- Lift the battery compartment cover off the bottom part.
- Remove the discharged batteries from the battery compartment.
- Insert the new batteries into the battery compartment at the provided places (please observe correct
polarity of the batteries).
- Lock the battery compartment cover into place on the bottom part and tighten the screws.
See figure 8: Battery replacement
Remember the environment! Do not dispose of used batteries with domestic waste.
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Dispose of them at a battery-collection point or as toxic waste. Your local authority will give
you the information you need.

9.4 Fuse replacement

Before opening the BENNING MM 12, ensure that it is not connected to a source of voltage!
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Electrical danger!
The BENNING IT 105 is protected against overload by means of an integrated fuse (1.6 A, 1000 V, super-
fast-acting (FF), breaking capacity ≥ 30 kA, D = 6.3 mm, L = 32 mm (part no. 10194027).
Proceed as follows to replace the fuses:
- Turn the rotating switch 1 to "OFF".
- Lay the BENNING IT 105 face down and release the screws of the battery compartment cover.
- Lift the battery compartment cover off the bottom part.
- Laterally lift one side of the defective fuse off the fuse holder by means of a slotted screwdriver.
03/ 2020 BENNING IT 105 CH
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