Siemens SITRANS WW300 Інструкція з експлуатації Посібник з експлуатації - Сторінка 22
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Commissioning
7.3 Changing the conveyor belt
7.3
Changing the conveyor belt
ALWAYS STOP the belt, lock-out, and/or place a "Do Not Energize" tag on the main
disconnect before working on or around the weighfeeder.
Depending on the size of the weighfeeder, several personnel may be required to remove and re-
install the belt.
1. On enclosed models, open and remove the access and non-access side panels.
2. Mark the current position of the telescoper for reference. This will be a reference when you
re-install the belt. Loosen the telescopers to remove tension from the belt.
3. Remove support posts on the belt change side, and the belt side roller below the belt plow.
Remove tension from the belt scraper, and remove all other components for belt changing.
Re-install the locking pins on the scraper, plow and tracker/tensions to help support the parts
during belt change.
Note
Skirtboard removal or adjustment is not normally necessary to perform belt removal or
installation, nor is it recommended. However, if the belt has a corrugated sidewall this will
be required.
4. From the access side of the weighfeeder at the discharge end, grab the edge of the belt and
gently pull it over the side rail, making sure that the leading edge of the belt does not catch
on any components.
5. Repeat the previous step on the inlet end of the weighfeeder. Again, be careful not to cut or
scrape the belt on any components.
6. When both ends have been pulled to the outside of the side rail, grab the belt in the middle
and slowly remove it. As you are removing the belt, mark the direction the belt was rotating,
as this will allow you to re-install it in the same direction. Take care when storing the belt to
prevent kinks or other damage.
7. With the belt removed, inspect the weighfeeder 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.
8. Reverse steps to re-install the same belt.
Note
• 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 Belt tracking (Page 21)).
• New belts should be un-rolled and allowed to relieve any kinks or bends: this will help
tracking and weighing accuracy.
20
WARNING
Operating Instructions, 05/2015, A5E33560691-AB
SITRANS WW300