TESTO 6681 Instruction Manual page 108

testo 6610
108
2 Screw new filter/protection cap onto probe shaft.
2.4.1.2
1 Undo screw (9) and pull shaft probe (7) together with filter/protection
cap (8) from the wall/duct holder (5).
- 2.4 Maintenance and cleaning
Screw on protection cap by hand, i.e. do not tighten it using a
tool.
Replacing the filter/protection cap for testo 6612
duct version
Do not damage the sensors when exchanging the filter/the
protection cap and do not touch their surfaces!
Hint:
Mark the insertion length of the probe shaft near the screw
(9).