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d) Checking the batteries
The insulation tester ET-100 allows you to check the battery voltage anytime. Switch the measuring device to the "600
V~" measuring range. After about 3 seconds, the small display at the bottom right shows the current battery voltage.
At a voltage of <7.5 V the battery replacement symbol starts flashing automatically.
e) Replacing the fuse
The low-voltage "400 Ω" measuring range is secured with a quick-break fuse. If measuring in this range is no longer
possible, you have to replace the fuse.
Proceed as follows to replace the fuse:
- Disconnect all measuring lines from the device and switch it off.
- Open the battery compartment as described in chapter "Inserting and replacing the batteries".
- The fuse is accessible.
- Replace the defective fuse with a new fuse of the same type and nominal voltage. The fuse has the following
characteristics: F 500 mA/1000 V, size 6.3 x 30 mm, ceramic.
- Properly close the housing again in reverse order.
Using repaired fuses or bridging the fuse holder is not admissible for safety reasons. This can cause
fire or electric arc explosions. Never operate the measuring device when it is open.
10. Disposal
Old electronic devices are resources and do not belong in the household waste. Dispose of the product
according to the applicable statutory provisions at the end of its service life.
Remove any inserted batteries and dispose of it separately from the product.
Disposal of used batteries!
The end user is legally obliged (battery regulation) to return all used batteries and rechargeable batteries. Dis-
posal in the household waste is prohibited!
Batteries containing toxic substances are marked with the symbols shown that indicate they must not be
disposed of in the household waste. The heavy metals concerned are: Cd = cadmium, Hg = mercury, Pb
= lead.
(The names are indicated on the batteries, e.g. below the rubbish bin symbol shown on the left).
You can return used batteries/rechargeable batteries free of charge at the official collection points of your
community, in our stores, or wherever batteries/rechargeable batteries are sold!
You will thus carry out your legal obligations and contribute to the protection of our environment!
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