7.0 Knife Installation/Changing
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7.2 Knife Installation
Knives are heavy and always very sharp! Be sure to keep the edge away
from your body and keep other people out of the area while handling the blade. Severe lacerations or
dismemberment could result from careless handling procedures.
1. Make sure the knife and clamp are in the up position. If they are not, turn on the power using the
red and yellow main power switch, and press the CLEAR button. This will preset the backgauge
and send the knife and clamp up.
2. Turn off the machine and unplug the power cord.
3. Pull out the cutting stick using the cut stick removal tool and turn it to a new surface. If the cutting
stick is not level or flush with the table, 1/2” strips of paper can be placed in the table slot under
the cutting stick to shim it.
4. Remove the left retainer screw from the new blade and screw the knife lifter assembly into the
new blade. Screw the lifters all the way in and then back them out a 3/4 turn).
5. Remove the other scabbard retainer screw.
6. Double check to make sure the knife adjusting screws have been backed out all the way (step #2,
Knife removal). Lift the blade and insert it into the knife bar slot. Guide the blade, right edge first,
into the space between the shroud and the knife bar guide frames. Tip to clear the table side
guides, then move the left end of the blade into the knife bar slot dropping the left end as the right
end is brought around the right knife bar guide frame and up into the knife bar slot. Raise the
knife into the knife bar slot as high as it will go and tighten the lifters.
NOTE
: If the blade will not go in, either the lifters are screwed into the blade too far, or the end of the
blade is hitting the cylinder bracket at the right end of the knife slot. In this case, drop the left end
when inserting the knife.
7.
Insert the knife bolts with washers and snug to hold the knife, but don’t tighten them yet.
8. Remove the knife lifter assembly and replace with bolts and washers.
9. Place a few sheets of paper over the cut stick, covering the stick end-to-end.
10. Plug in the power cord and turn the power on.
11. Go to the MAINTENANCE screen and choose KNIFE ADJUST. Choose KNIFE DOWN and
press the cut buttons to send the knife to the down position
– hold the cut buttons until the
hydraulic motor turns off. (for more details on how to do this, see page 24, Knife Adjustment).
12. Turn the power off and disconnect the machine power cord.
13. Turn the knife adjusters down evenly, a little at a time, until the knife cuts through the bottom
sheet of paper the entire length of the cutting stick (Figure 25). Turning the screws down evenly
prevents uneven wear on the knife and cutting stick.
