Care And Maintenance; Changing The Battery; Microphone; Meter - TESTO 815 Instruction Manual

6. Care and Maintenance

6.1 Changing the battery

If the battery symbol appears in the display, the lifetime remaining
is approx. 10 hours. To avoid mismeasurement, please change
the battery as soon as possible.
1 Unscrew the screw at the back of the testo 815 with a
screwdriver and remove the back of the housing.
2 The battery compartment is located at the back of the
housing.
3 Remove spent battery and insert new battery,
Type 9V Block (observe +/-).
4 Replace back of housing and screw in carefully using
screwdriver.

6.2 Microphone

A robust, long-term stable measurement microphone is located in
the housing head. A function test can be carried out with the
calibrator. The housing can be cleaned with alcohol (isopropanol).
Please ensure that liquid does not get into the microphone.
The attached wind cap also protects the microphone from dust
and humidity.
Please contact our service department if the microphone is
defect.

6.3 Meter

testo 815 is maintenance-free and is therefore not bound by any
maintenance intervals. Clean the housing with a damp cloth.
Weak household cleaning agents can be used.
Never clean with abrasive cleaning agents or solutions.
6. Care and Maintenance 29