CHAPTER 5 - SPECIAL MAINTENANCE 63
M2. CUTTING UNIT
Inspections
M2.I1 M2.I3
M2.I2
M2.I1 Motor backslash inspection
NOTE: The motor backslash must be checked at operating temperature.
Perform inspections or adjustments at the end of the work shift or after
leaving the machine in operation for about 20 minutes.
1. Apply the supplied control instrument on the protruding part of the motor
shaft, as shown in the figure, and tighten it (A).
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A
1 - Control instrument.
2 - Support surface.
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of the comparator pin
3 - Comparator.
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1
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2
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3
MACCHINE PER C ARTONE O NDULATO . MASTER 21.30 N° CMST02700ING
64 PART III - MAINTENANCE
2. Place the comparator steadily (A) and so that the read is performed on
the support surface of the supplied instrument.
3. reset the comparator and measure the backslash between motor gear
and driving gear, moving the motor shaft by hand.
NOTE: grip the adjusting sleeve firmly and move it without making your
hand slide on the grip.
The read should be repeated on 8 points at an angular distance of 135° and the
mean value of the measures taken should not exceed 0.1 mm. A tolerance of
0.04 mm around such value is allowed.
1 3
4 8
135
7 5
2
The arrangement of the roller fixing screws (A), of the adjusting block (B) and of
the blade holder is such as to determine the 8 check points during rotation. Fix
a point on the side (C) and move the roller on the check points, using a 17 bush
wrench.
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C
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A 123
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B
MACCHINE PER CARTONE ONDULATO. MASTER 21.30 N° CMST02700ING