6-1
6 Maintenance and repairs
6.1 Rechargeable and alkaline batteries
6.1.1 Replacing the rechargeable batteries and alkaline batteries
✓ The ELT-400 is switched off
✓ The ELT-400 is disconnected from the AC adapter / charger unit
Changing the rechargeable or alkaline batteries
1. Remove the probe.
2. Starting from the lower side of the instrument, slide off the rubber cover.
3. Push down the locking button on the back of the instrument and remove
the battery compartment lid.
The battery compartment is now accessible.
4. Insert the new alkaline or rechargeable batteries. Make sure that you
insert them correctly (positive and negative poles are marked in the
instrument).
Fig. 6-1 Polarity markings in the instrument battery compartment
5. Replace the battery compartment lid and close it.
6. Starting from the top side of the instrument, slide the rubber cover back
onto the instrument.
7. Plug in the probe.
The instrument is ready to use again.
Caution
Destruction of instrument
The instrument may be damaged if the batteries are inserted incorrectly.
⇒ Before charging the batteries, make sure they are inserted correctly
according to the polarity markings inside the battery compartment.
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