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5.11 Setting the Belt Tension and Tracking
If the belt slips or moves during normal operation, check the rollers are clean and free from
debris and greasy elements then follow the steps below.
Adjusting the hexagonal lock nuts on the studs of the four hanger bearings at the ends of the
conveyor facilitates belt tracking and tension adjustment for this type of conveyor. Do not over-
tension the belt as this may cause premature wear to the bearings.
Main belt tensioning is controlled by the hanger bearings at the drive end of the conveyor. This is
factory set and must not be adjusted on site.
Tracking and minor tension adjustment is controlled by the hanger bearings at the idle end of
the conveyor. Increasing the tension on the right-hand side of the belt will cause the belt to
move to the left. A decrease in tension on the right will cause the belt to move to the right.
Adjust until the belt track is central.
5.12 Adjusting the Drive Chain Tension
The conveyor belt drive chain is tensioned by undoing the four bolts holding the motor and
moving the motor until the correct tension of 5mm maximum free play at the central point
between the pulleys is achieved.
5.13 Adjusting the Reject Devices
Pusher and Retracting Band Rejects
At the reject solenoid valve, adjust the two throttle screws, in conjunction with the reject delay
and dwell times set in the Rejects Setup screen, until the required reject timing and speed of
operation are obtained. Both the reject timing and the speed of operation are affected by the
air pressure supplied to the conveyor.
Air Blast Reject
Since this type of reject has no throttles, the only variables that can be adjusted are the reject
delay and dwell times set in the Rejects Setup screen. There is no air regulator supplied as
standard with the air blast reject. However, the air supply pressure should be approximately 100
psi (6.9 bar).
Original Document
Operating Instructions
Copyright © Loma Systems
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