NOTE: If bags have an air relief hole or hanger hole, shift the bag to the right or left of center
to avoid having the hole pass directly under the perf sensor.
NOTE: Use the web guides for minor adjustments only. Major adjustment of the guides requires
relocation of the bag roll on the bag roll shaft.
4.7 PTFE Anti-Stick Sheet Adjustment
An Anti-Stick Sheet which prevents the bag from sticking to heater bar surfaces is located
immediately behind the front plate. The sheet should periodically be inspected for wear or
damage. If holes or tears exist, the rolls can be turned (rotated) to cover the contact
surfaces with fresh material. If a change of material is required, turn the main power to the OFF
position and unplug the power cord. Lower the inner frame by pulling the handle downward.
The rollers are located on the outside lower frame, on the left and right side of the inner
frame which extends beneath the side-plates (Fig. 4-17). To adjust the sheet, turn the lower
roller clockwise approximately 1/4 turn using a flathead screwdriver. When fresh material is in
place, turn the roller counterclockwise releasing ALL of the tension on the sheet
.
CAUTION: If sheet tension is not released, the material will tear when the seal bar engages.
4.8 PTFE Anti-Stick Sheet Replacement
Turn the power to the OFF position and unplug the power cord. Remove the four screws which
hold the front plate to the inner frame. Pull the front plate from the inner frame and slide the
front plate along the guide rods away from the seal assembly. Then slide the rollers and
the roller holder away from the heater bar as a unit. Remove and discard the sheet. Replace
the sheet and rollers with the new material wrapped on the upper roller. Place the rollers
on the roller holder, ensuring springs are seated in the grooves on the rollers. Replace the rollers
and holder as an assembly (with the unexpended material on the upper roller). Replace the
front plate and tighten the four screws. Adjust the material as described in section 4.12.
Note: Fiber spacers are located behind the front gripper plate which may fall when removing
the front plate screws.
4.9 Pressure Bar Adjustment
The pressure bar, when actuated by the seal cylinder, is forced against the front plate. The
pressure bar must be parallel to front plate to avoid excessive wear of components.
Turn the power to the OFF position and unplug the power cord. Remove the air line from the
regulator and remove the top cover. Once the air is removed, the pressure bar can freely be
pushed toward the front plate. As the pressure bar approaches the front plate, you can see
whether the pressure bar is parallel to the front plate. If it is not, remember which side of the
pressure bar touches first; along with the distance of the gap on the opposite side. To make the
pressure bar parallel to the front plate, the rear channel which holds the guide rods, must be
adjusted. Loosen the nuts inside the channel. On the side opposite of the "touching" side, turn
the nut, located on back side of the channel, clockwise the same distance the pressure bar was
out of alignment. Tighten the inner-channel nuts and test the pressure bar again by sliding it in
and out a few times.
55
To Next Page
Loading...
