FISCHBEIN
®
Co. MODEL PBC-6000™
OPERATOR’S MANUAL
REV. D 2005-03
39
8. Remove and replace the takeup rollers. Take careful note as to the orientation of the rollers to
the shafts.
9. Place the bushings back on the screws.
10. Screw the screws back into the blocks enough to keep them vertical and yet allowing the
blocks to be moved.
11. Begin turning the block adjustment screw (
T
) out of the block. This should start tensioning the
compression belt. Do not over tighten the belt at this point.
12. Tighten the holding screws (
H
) and the ½ inch screw into the block.
13. Check the tension in the belt by pushing in on the belt between the takeup roller and the drive
sprocket. The belt should deflect in by ½ to ¾ inch (13 to 19mm) with a reasonable amount of
force. (
Illustration 8.10
) If the belt needs to be adjusted further, the ½ inch screws and
screws (
H
) will have to be loosened (slightly) and the adjustment screw (
T
) turned.
14. Before mounting the shrouds and cover, make sure all the screws and bolts are tight. Also
check the positioning of the compression rollers. Install the shrouds and top cover back into
position.
15. Turn “ON” the electrical and pneumatic supplies to the machine.
16. Run some test bags through the machine with the heaters “OFF” and then “ON” to check the
performance of the rollers.
8.5.5 PULLEYS, DRIVE SPROCKET AND TENSION
INFEED IDLER PULLEYS
The infeed assembly is designed to control the tension in the carry through belts. The belt passes
through the infeed, around a pulley. After normal usage, the pulley will need to be replaced. The
replacement pulley comes with a bearing set in it and a thrust washer. The top plate of the infeed
has the pulley shaft welded to it. When replacing a pulley, always replace both pulleys. To
replace the pulley, follow these steps:
1.
Turn “OFF” and lock out the electrical and pneumatic supplies to the PBC machine.
2.
Remove the front and rear shrouds.
3.
Remove the entrance belt guards from the leading edge of the infeed. (
Illustration 8.16
)
WARNING
Make sure that the bushing go all the way up into the blocks.
If the block adjustment screws (T)are into the block too far, the
bushing will not be able to completely enter the block.
Summary of Contents for PBC-6000
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