Goff 2460, Operation And Maintenance Manual

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ELEVATOR BELT MAINTENANCE
Belt tension should be checked regularly to insure proper operation of the recycling system.
The following information should be considered when checking belt tension.
1 ) The pulley in the elevator bottom section should rotate constantly without slippage or
hesitation.
2)
The unloaded belt should run generally in the center of the elevator casing with
minimum movement from side to side.
3)
Elevator buckets should not strike the sides of the casing.
4)
It should not be possible to manually slide the elevator belt back and forth across the
face of the pulley when the elevator is stopped. However, the tension on the elevator
belt should not be so great that there is danger of tearing out the splice.
The elevator belt may become stalled or jammed for several reasons.
1) If the blasting operation is started without the elevator running.
2) If the elevator belt slips because of improper tension adjustment.
3)
If abrasive is added without the elevator system operating.
4)
If abrasive is added to the machine at a rate faster than the elevator is capable of
handling.
If a stalled elevator condition exists, the abrasive feed to the blast wheels and all power sources to
the machine should be cut off immediately. It is advisable to use a scoop or scraper for removing
abrasive from a jammed elevator. DO NOT USE YOUR HANDS! The rubber elevator belt in this
jammed condition has been stretched and is probably under tension. At some point, while the excess
abrasive is being removed, the tension in the stretched belt will be released causing the pulley to
rotate very rapidly in the reverse direction. Serious personal injury could result if a hand or forearm
were in the path of the rotating elevator buckets.
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