BRUEL & KJAER 2305 - Writing Width Adjustment Method

extended piece of paper. Make certain that the paper is situated
between the paper guide lip on arm B and rear guide spindle C. Vide
also Fig. 3.2b.
Clearance 05-1 mm
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~ SOmm
0
g Paper Roll
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sure that tC::per lie s between
En
the
on
rear guide spindle C and the Up
the spring-loaded arm B .
(b)
Fig. 3.2. Paper in position.
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B
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D
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II II
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II II
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(a) Side view, spring-loaded arm B removed.
(b) Front view, spring-loaded arm B in position.
6. Test manually that the paper will run smoothly from roll, by rotating
grooved thumb wheel Z forwards and backwards several times. Sprocket
should engage in perforations without tearing or pulling.
7. Lower stylus by means of the grooved finger cam A.
NOTE: The pen can also be lifted electrically by setting the toggle switch
mark ed FORWARD-REVERSE to the "Reverse " position . In prac·
tice it is, however, rec omm e nded to mechani c ally lift the pen
during ins e rtion of the paper as the switch may be inadvertently
left at the "Reverse" position, and on switching to "Start", the
paper will mov e b ac kwards dise ng ag ing from the paper drive
sprocket.
B. POLAR PAPER.
32
l. Ensure stylus IS III up position. This is done mechanically by moving
grooved finger cam A at right-hand end of paper frame scale clockwise.
2. From the front of the Recorder insert a polar chart underneath the
Bottom Plate of the Writing Arm Unit. Make certain that the chart
goes into the slot above nnd to the rear of Writing Plate, see also
Fig . 3.3.
3. Lift guide clip E
with finger nail , feed the perforation in the paper
onto the sprocket , ensuring that the teeth are evenly engaged in the
holes and at the same time that the center hole in the polar chart is
lined up with the hole P in the Writing Plate.
4. Remove the Polar Recording Pin by pulling from the "stand by" hole
PI and place it in hole P through the center hole in the polar chart.