Wexxar WF-10T, Operation And Service Manual

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WF-10T Case Former Machine Maintenance
9-89
9.7.5 Cases Jam Frequently Between Belts
Turn OFF the machine as soon as a jam occurs and before clearing the jam.
Check for the following jam causes:
•
Tape head may be adjusted too high.
•
Bottom flaps are not folding correctly, flaps then hit center ski or tape head mechanism.
If the tape head is mounted too high, interfering with the transit of cases over the tape head, slide
the tape head out and remove it from the bracket. Then use a wrench to loosen the bolts that
secure the discharge end of the tape head bracket to the main frame. Adjust the bracket down
slightly in the adjustment slots and retighten the bolts.
Figure 9-1: Lowering the Tape Head Bracket
9.7.6 Frequent Belt Breakage
Belt service life will depend on the conditions of machine use, but frequent breakage may be due
to one or more of the following conditions:
•
Belt tracking.
Verify that the belt does not try to ride up or down on the pulleys. See
belt tensioning and tracking adjustment in Section 8.2: ‘
Service and Maintenance
Procedures
’
.
•
Belt Tension.
Belts may be over-tensioned – there should be approximately 1” of slack
at the center point of the conveyor.
•
Idler and drive pulley rotation.
Verify that the pulleys rotate freely and that bearings
are not excessively worn or seized.
•
Rotation direction of belt.
Look on the back of the belt for the type of join. Stepped-lap
splice belts must move in the direction of the arrow marked on the inside of the belt.
Newer style ‘finger-spliced’ belts can move in either direction.