Wexxar WF-10T, Operation And Service Manual

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WF-10T Case Former Machine Maintenance
- 8-78 -
When re-tensioning the belt, use the nut on the top threaded rod to take up the slack and
increase tension, and use the nut on the bottom rod to control the angle of pulley shaft. Adjusting
the top and bottom nuts together controls both the tension and the tracking of the belt. The angle
of the shaft should be adjusted so that the pulley is centered on the belt, and does not want to
ride up or down when running. Re-tighten the locking bolt to secure the shaft after adjusting.
Correct belt tension is a one percent stretch. If in doubt about how much to tension the belts:
1. Slacken off to the no-load condition.
2. Place two marks on the belt 25" apart.
3. Tension until the marks are 25¼" apart.
8.5.4 Tape Head Adjustments
For adjustments and set-up of the adhesive system on the WF-10T, refer to the separate Dekka
Tape Head Manual supplied with this machine.
8.5.5 Pneumatic Supply Adjustments
Little adjustment is necessary. The knob on the top of the regulator unit adjusts the pneumatic
supply. The supply regulator should be set to give a pressure of 90 PSI. If the supply pressure
regularly drops below 75 PSI while running, a larger supply air-line may be required.
8.5.6 Proximity Sensors
Two types of proximity sensors are used on the WF-10T case former: inductive and infrared
photo-type. The majority is of the inductive type; they sense the presence of a steel component
by magnetic effects and are mostly used to sense the position of the machine mechanisms. It is
important that these sensors be the correct distance from the metal ‘flag’ that causes the sensor
to trigger.
Figure 8-3: Inductive Sensor Adjustment Range
Infrared type sensors are used to detect the presence of the corrugated case. These sensors are
sensitive to background objects, so they should be checked to ensure that they are not ‘seeing’
objects other than the target. The sensitivity is adjusted by rotating the adjustment screw on the
back of the respective sensor. Place the target at the correct range, and turn the screw until the
indicator light comes
ON
solidly and goes out positively when the target is removed.