Wexxar WF-10T, Operation And Service Manual

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WF-10T Case Former Machine Maintenance
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8.2.3 Conveyor Side-Belt Replacement
The side-belts can be easily and quickly replaced with a minimum of downtime. Wexxar/BEL
recommends replacing both belts at the same time.
The procedure is as follows:
1. Remove the safety covers.
2. Loosen the lock-bolt that secures the idle pulley axle rigidly against the conveyor frame
bracket. See Section 8.5.3.
3. Release the belt tension by loosening the tensioning and tracking push-pull screws until the
belt can be removed upwards.
4. Fit a new belt. If the belt has a bonded lap joint, be sure to install the belt such that it is
moving in the correct direction (arrows indicate the direction). Newer ‘finger’ splice belts can
move in either direction.
5. Reset the belt tension by adjusting the two push-pull screws in order to both tension and
position the belt such that it is running true and not trying to ride up or down on the idler
pulley.
Set the belt tension such that approximately 1” of play is available when the
belt is pulled sideways by hand in the center of the machine. There should be just
enough tension to prevent the belts from slipping while the machine is in use.
See
Section 8.5.3.
6. When the correct tension and tracking are achieved, tighten the clamp bolt that locks the
position.
8.2.4 Gear Reducer
Worm-gear reducers should be inspected regularly for evidence of oil leakage, excessive noise or
vibration to ensure maximum performance and service life.
Oil Leakage
- Check housing bolts; tighten if necessary. Replace oil seals if required.
Oil Temperature
- Worm-gear reducers usually run warm through an initial run-in period. Check
the temperature of the reducer for elevated temperatures (above normally encountered levels)
that are not attributable to a rise in ambient temperature. Low or high oil levels and abnormal
loading are possible reasons for elevated temperatures.
Sound Level and Vibration
- Excessive vibration, or a change in sound level, can indicate a low
oil level, abnormal loading, or worn elements.
Dirt Accumulation
- Excessive accumulation of dirt or grease will affect the proper cooling of the
unit.