Service And Maintenance; Changing The Battery - TESTO 830-T4 Instruction Manual

12 8. Settings
8. Settings
Instrument is switched off
If no button is activated in the setting mode for 3 s, the
instrument changes to the next mode.
1 Keep
- All display segments light up briefly. The instrument changes to
the setting mode.
2 Select parameter (°C or °F):
3 Set alarm (ALARM):
advance more quickly.
4 Set alarm criterion (alarm overshot: , alarm undershot: ):
- All segments light up briefly. The instrument changes to the
infrared measurement mode.
There is a visible and audible alarm if the set alarm values are
exceeded.

9. Service and Maintenance

9.1 Changing the battery

9.2 Clean instrument
Do not use abrasive cleaning agents or solutions.
Clean the housing with a damp cloth (soap water).
Carefully clean the lens with water or cotton buds dipped in
water or medical alcohol.
and pressed.
or
Instrument must be switched off!
1 Open battery compartment:
Open up cover.
2 Remove used battery and insert new
one. Observe +/-. The minus should be
visible once the battery is inserted.
3 Close battery compartment: Close
cover.
.
. Keep button pressed in order to
.