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9. Service and Maintenance
9. Service and Maintenance
9.1 Changing the batteries
9.2 Cleaning the instrument
Only use weak, commercially available neutral/household cleaning
agents (e.g. washing-up liquid) to clean the instrument. Do not
use aggressive cleaning agents or solvent!
Protective cover (Softcase) can be cleaned with washing up
liquid.
The housing and probe can be disinfected using an alcohol-
based spray. In doing so, always follow the manufacturer's
instructions.
✓ The probe included in the set is connected.
Clean the housing and probe under running water and rub dry
with a towel.
10. Questions and Answers
Question
lights on.
- - - lights on.
Instrument cannot be
switched on.
Instrument switches itself off.
www.
1 Loosen the screw on the battery
compartment.
2 Open the battery compartment.
3 Insert batteries (3 x AAA).
Observe the polarity!
4 Close the battery compartment.
5 Tighten the screw.
Possible causes
Batteries dead.
Measurement range exceeded
or fallen below.
Batteries dead.
The instrument switches itself
off automatically as per the
configured Auto-off-Time.
Testo-Direct
Possible solution
Change batteries.
Measurements can only
be carried out in the
range specified.
Change batteries.
Switch the instrument on. -
If required: To change the
Auto-Off-Time see how to
set up the instrument.
1.888.
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