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Changing the Conveyor Belt
1.
On enclosed models, open and remove the access and non-access side panels by
releasing the latches and sliding the door off the hinges.
2.
Rotate the belt tension roller up against the back of the infeed where it is
self−supported during belt change. On non−standard models, this tensioner may
need to be removed for ease of belt change. It is located at the infeed end of the
weighfeeder.
3.
To make the belt change easier, remove the belt scraper counterweight located at
the discharge end of the conveyor.
4.
Move the belt out from the side guide roller.
It is not normally necessary to loosen the telescopers to remove the belt. If you
Note:
do need to loosen the telescopers, mark the current position of the telescoper for
reference.
5.
From the access side of the feeder at the discharge end, grab the edge of the belt
and if the belt scraper is still weighted, lift it away from the belt. Gently pull the belt
over the side rail, making sure that the leading edge of the belt does not catch on
any components.
6.
Now repeat Step 5 on the inlet end of the feeder. Again, be careful not to cut or
scrape the belt on any components.
7.
When both ends have been pulled to the outside of the side rail, you may grab the
belt in the middle and slowly remove the belt , relieving the scraper if neceassary. As
you are removing the belt, mark the direction the belt was rotating. This mark will
allow you to re-install the belt in the same direction. Take care when storing the belt
to prevent kinks or other damage.
8.
With the belt removed, inspect the feeder for material buildup, lodged particles, and
signs of wear, paying close attention to the weighing section. Take care when
cleaning the weighing section, as 6 kg (15 lbs) (or less) pressure placed on the
weighbridge could cause load cell damage.
9.
Reverse steps 1 to 7 to re-install the same belt.
Notes:
•
On a new replacement belt, there may be an arrow printed on the underside of
the belt. This arrow indicates what direction the belt should rotate when it is
installed. If there is no arrow, rotation of the belt may be in either direction.
Whenever a new belt is installed, perform the belt tracking procedure (see
Tracking on page 16
•
New belts should be un-rolled and allowed to relieve any kinks or bends: this will
help tracking and weighing accuracy.
Belt Tension
The ideal belt tension for any weighfeeder is just enough tension to prevent the belt from
slipping on the drive pulley. The tension minimizes the effect of the belt on weighing
accuracy. Often, the cause of an inaccurate weighfeeder is excessive belt tension.
7ML19985MN01
SITRANS WW100 - OPERATING INSTRUCTIONS
).
Belt
Page 15
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