BRUEL & KJAER 2305 - Writing Pen Installation and Use

:l. Test manually that the paper will run smoothly by rotating grooved
thumb wheel Z to and fro several times. Sprocket should engage in
perforations without tearing or pulling.
Fig. 3.3. Polar paper in position. Top view.
Alteration of Writing Width
(Refer Fig. 3.1).
The stylus is made to transcript at two widths viz. 100 mm and 50 mm reo
spectively. The alteration has to be done mechanically and can be carried
out after the cover of the Writing Arm Unit is removed. This is pulled off
to the right.
A. 100 mm TO 50 mm.
1. Switch the POTENTIOMETER RANGE to "Stand by" position.
2. Lift stylus electrically or mechanically and stop paper drive.
3.
To remove the driving arm with its wishbone-type head F from drive
lug
G, press the inner leaf of F gently inwards (for example by means
of a pair of tweezers) extending the wishbone outer leaf, whereby the
inner leaf can be disengaged by moving the bogie to the right.
4. Holding the driving arm in a forward position and at the same time
resting it on the face of the lug G, push the bogie towards F. Guide the
wishbone head so that it engages the two-holed lug on top of the
bogie,
and insert the stop on wishbone inner leaf in first hole H.
(Second hole is for extension of driving arm when this is externally
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