FISCHBEIN PBC-6000, Руководство оператора, Страница: 30 / 82

FISCHBEIN
®
Co. MODEL PBC-6000™
OPERATOR’S MANUAL
REV. D 2005-03 30
REPLACING THE CARRY THROUGH BELTS
Inspect the belts on a daily basis to check for excessive wear and fraying. Using belts that need to
be replaced can lead to the bag slipping as it passes through the machine and possibly cause the
bag to spill. Loose or worn belts may allow the bag top to be skewed as they pass between them.
If the belts need to be replaced, be sure to use genuine Fischbein Parts. To replace the belts, follow
these instructions:
1. Turn “OFF” and lock out the electrical and pneumatic supplies.
2. Remove the swing and fixed channel shrouds.
3. Remove the infeed’s belt guards. (
Illustration 8.16, page 40
)
4. Loosen the top and remove the bottom holding bolts (
Illustration 8.16, page 40
) on the
infeed. Also remove the idler pulley bolt (
I
).
5. Remove the infeed bottom plate.
6. Turn the take-up bolt to reduce the tension in the carry through belt. When the bolt is turned
enough, the belt should be able to slip off of the drive pulleys.
7. Replace the belts with the new ones.
8. Install the infeed bottom plate using the holding bolts and the idler pulley bolt (
I
).
9. Turn the take-up bolt until the belt is tight on the pulleys. When the tension in the belt is
correct, the belt can be pulled away from the carry through belt plate only ½ to ¾ inches (13
to 19mm) with a reasonable force.
10. Tighten the top and bottom holding bolts.
11. Check the pressure between the carry through belts. If the pressure needs adjusting, follow
the “
Pressure Between Belts
” instructions on
page 28
.
12. Install the shrouds.
13. Turn “ON” the electrical and pneumatic supplies.
14. Use filled test bags to test the carry through belts. They should be able to grasp the bag top
without allowing the bag to be pulled from the belts with a reasonable tug. The bags must
not slip between the belts as they travel through the system.
8.5.2 COMPRESSION BELTS
The compression belts work with the compression rollers to create a secure bond in the fold. It is a
specially coated timing belt that grasps the bag top after the carry through belts begin to release the
bag and compresses the fold. After the folder, the carry through belts start to taper slightly away
from the centerline of the machine and the compression belts finish transporting and compressing
the bag. The coated belt is wide to accommodate a variety of fold widths.
COMPRESSION BELT UPKEEP
The compression belts must provide even pressure across the fold as bags pass through the
machine. Belts with deep gouges or glue buildup will not produce even pressure area across the
fold. Glue left on the belts will likely deposit on the following bags, defacing the appearance of
the bag. Keep the belts clean and free of glue buildup. Use a dull edged tool to gently remove the
glue from the belts. NEVER use a metal edge (such as a screw driver or putty knife) to remove the
glue. A clean rag and some mild soap can be used to clean the dirt from the belts.