4
3
2
1
4
3
2
1
4
3
2
1
8. Changing or cleaning the blocking tube
Put the blocking tube in the high position.
Pivot the tube in the opposite direction of the hands of a watch to its limit (approximately 20°).
You must make the tube pivot before trying to remove it from its support in order not to damage the system.
Raise the tube to remove it from its support.
Use the 53 mm diameter blocking tube.