10 Maintenance
69
10.3
Keeping connections clean
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Keep screw connections clean and free of grease and other
deposits; clean with a damp cloth as required.
10.4
Removing oil residues
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Carefully blow out oil residues in the valve block using
compressed air.
10.5
Ensuring measuring accuracy
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Testo Customer Service will be happy to help you as required.
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Check the instrument regularly for leaks. Keep to the permissible
pressure range!
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Calibrate the instrument regularly (recommendation: once a
year).
10.6
Changing batteries/rechargeable
batteries
The instrument is switched off.
1
Fold out the suspension hook,
release the clip and remove the
battery compartment lid.
2
Remove the spent (rechargeable) batteries and insert new ones (3 x
AAA batteries / Micro / R03) into the battery compartment. Observe
the polarity!
3
Attach and close the battery compartment lid (the clip must click into
place).
4
Switch the instrument on.
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