Page 33
Maintenance
➤ Slacken off the clamping screw a little (approx. 1/4 turn in counterclockwise direction)
➤ Release the fixing bush out of the lock of the clamping screw
➤ Pull the wiper rod as far as it will go – it must remain against the stop until it is inserted again!
➤ Lightly tighten the clamping screw by hand (approx. 1/4 turn in clockwise direction)
➤ Use a pin-type face spanner to loosen the protective tube retaining fixture and remove
(place spanner in the holes – not against the threads!)
➤ Carefully pull the protective tube completely out of the radiation chamber and keep in a
suitable, clean place
➤ Remove the O-ring from the lamp protective tube
➤ Wipe the protective tube clean with cleaning solution or immerse in cleaning solution until the
coating is completely removed
➤ Rinse protective tube with clear water and dry with a soft cloth
➤ Remove the screws holding the radiation chamber cover
➤ Carefully place the radiation chamber cover together with the completely extended wiper rod
in an appropriate, clean place
➤ Remove one socket head cap screw at one wiper
➤ Remove the old wiper element to the side
➤ Fit the new wiper element from the side – the wiper lip must face away from the radiation
chamber cover (see Details in Section 5, Fig. 2)
➤ Fit the socket head cap screw with the socket in the wiper and tighten
ATTENTION!
Although the socket head cap screw has been tightened, the wiper element must be loose
in the wiper!
If this is not the case, rectify the cause or use another wiper element!
➤ Replace the other wiper elements as described
➤ Fit a new O-ring on the radiation chamber cover
➤ Carefully insert the radiation chamber cover together with wiper rod, still fully extended, in the
radiation chamber – the wiper rod must fit in its mount on the radiation chamber cover and
remain in this position until the lamp protective tube is fitted.
➤ Firmly secure the cover to the radiation chamber such that it makes a tight seal
➤ Carefully slide the lamp protective tube as far as it will go into the radiation chamber
➤ Fit a new O-ring onto the end of the lamp protective tube – the sealing surfaces of the O-ring
must be completely smooth and clean!
7
1
2
3
4
5
6
1 Knob
2 Guide pin
3 Fixing bush
4 Clamping screw
5 Wiper rod
6 O-ring
7 Chamber cover
Fig. 10: Parts of the manual wiper at the chamber cover
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