Service manual
3.0 Maintenance Guide
22
4. Loosen bracket mounting screws (Figure 18), and slide bracket up or down, depending on
the type of adjustment needed. Lowering the bracket will lower the “up” position of the clamp,
raising the bracket will raise the “up” position of the clamp. Then tighten screws, and also
check to make sure the screws mounting the switch to the bracket are tight.
Note: Applying temporary thread lock to bracket mounting screws will help prevent screws
from coming loose during operation.
Figure 18
5. Engage motor brake (Figure 17, page 21). VERY IMPORTANT – do not skip this step.
Damage to machine could result if the motor brake is not engaged prior to running.
6. Replace top cover and display panel. Turn on power and make a cut. Check position of
clamp in “up” position – USE CAUTION, THE KNIFE EDGE IS VERY SHARP. The edge of a
new knife should be above the bottom of the clamp when the knife and clamp are in the “up”
positions. If the knife edge is below the clamp, repeat the adjustment procedure, moving the
bracket slightly down to allow the clamp to stop below the edge of the knife. Or it may be
necessary to adjust the knife-up limit switch (see Section 3.5.12 Knife-Up Limit Switch
Adjustment, page 22). Also, the clamp should not be allowed to travel all the way to its upper
stops, as this could cause damage to the clamp mechanism. This would also require the
bracket to be adjusted down.
3.5.12 Knife-Up Limit Switch Adjustment (All Models)
If the knife-up limit switch becomes loose or needs adjustment, adjust as follows:
1. T
urn off the power and disconnect the power cord.
2. Remove rear bottom cover.
3. If the knife pull-down gear is disengaged, engage it now. See Section 3.5.14 Re-engaging
the Knife Pull-Down Gear, page 24.
4. Loosen bracket mounting screws (Figure 19), and slide bracket such that mounting screws
become located in the center of the slots. Then tighten screws, and check to make sure
screws mounting switch are tight also.
Note: Applying temporary thread lock to bracket mounting screws will help prevent screws
from coming loose during operation.
Clamp Up
Limit Switch
Bracket Mounting
Screws