Section 2 - Case Drive Belt System - Pro Mach Wexxar BEL Series Operation & Service Manual

B E L 2 5 2 F u l l y A u t o m a t i c U n i f o r m C a s e T a p e S e a l e r

Section 2 - Case Drive Belt System

The Uni-Drive side belt system is designed to keep the case square during sealing which results in a
technically stronger seal and a better looking appearance.
Problem: Case Is Not Sealing Squarely.
Despite the parallel drive nature of the Uni-Drive system, the cases exit the machine not square after
sealing. Check that:
•
the case is square prior to engagement in the side drive conveyor belts.
•
the side belts are adjusted to case width correctly by the following method:
1. Adjust the belts in until they lightly contact case sides, but so the case can still slide through
belts if pushed firmly.
2. Remove the case and adjust the belts in one half turn more.
•
niether of the conveyor belts are slipping on its drive pulley. See the section on belt tensioning
procedure under Service and Maintenance Procedures.
•
in the case of round can or bottle products, check that belts are set to grip lightly but firmly on case
sides. Excessive side pressure can cause round objects to roll "over-center" and push the case out of
square.
Problem: Depressed or Crushed Band on Lower Case.
If the cases exit the machine with a band of crushed corrugation at the level of the conveyor belts, it is
likely that the case is gripped too tightly in the belts.
Problem: Rubber 'Dust' Being Shed by Belt.
A dark gray or almost black dust appears beneath the conveyor belts, particularly at the case exit end of
the machine
•
Check that carton is clearing the belts as it exits the machine and that outfeed conditions do not cause
cases to back up into the machine.
•
Check that belt tensioning and tracking adjustments are correct as described under Service and
Maintenance Procedures.
breakage.
Problem: Rattling Noise from the Conveyor Drive.
Although pre-stretched chain is used in the machine drive, the chain over time may loosen and rattle on
the drive cover. Tighten the idler sprocket as described in the Service and Maintenance Procedures
section.
65-06-11 5/18/2007
Incorrect settings can cause premature belt wear and possible belt
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