Service and maintenance
Replacing the batteries
If the battery voltage is high enough, the LED lights up green. When batteries start running out,
the LED lights up red, which means the batteries need changing soon.
1. Switch the instrument off.
2. Fully disconnect the instrument from all measurement circuits.
3. Open the battery compartment: undo the screw and remove the battery compartment cap.
4. Remove the spent batteries.
5. Insert new batteries in accordance with the battery icon.
6. Close the battery compartment: put the battery compartment cap on and tighten the screw.
Maintenance
When operated in accordance with the instruction manual, the instrument does not require any
particular maintenance. If a malfunction occurs during operation, the ongoing measurement
should be stopped immediately. Send the instrument to Testo Service for checking.
Storage
- Make sure the instrument is stored in a dry place.
- If the instrument is not in use for a significant period of time: remove the batteries in order to
prevent any danger or damage due to any potential leaking of the batteries.
Cleaning
- Always switch off the instrument prior to cleaning and disconnect it from external voltage,
other connected instruments (e.g. test piece, and control devices, etc.), or a clamped con-
ductor.
> Wipe the instrument with a damp cloth and a small amount of mild household detergent.
Never use any harsh cleaning agents or solvents to clean the instrument! After being cleaned,
the instrument must not be used until it has completely dried.
Protecting the environment
> Dispose of faulty rechargeable batteries/spent batteries in accordance with the valid legal
specifications.
> At the end of its useful life, send the product to the separate collection for electric and elec-
tronic devices (observe local regulations) or return the product to Testo for disposal.
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