
While adjusting the gap, you will need to push UP on the bottom of the roller.
That will hold the assembly against the lower adjuster nut while you make
adjustments.
Adjust the lower nut and spin the roller by hand until it starts to be slightly
difficult to turn, then back the nut off just enough to allow the roller to turn freely
again.
Once the gap is set properly, snug up the upper nut to take out the play. Make
sure that the operation lever still rotates freely, with a slight drag. DO NOT
OVERTIGHTEN THE UPPER ADJUSTER NUT.
If the top surface of the can seam is rough after re-adjusting, you may need to
raise the vertical position of the roller slightly.
Base Force Adjustment
The clamping force between the lower adapter and the upper chuck is critical to a
good seam. In particular, the base force has a strong effect on the seam’s body
hook (more base force typically will create a larger body hook).
In general, the base force is set to just less than the maximum that the can will
take before it collapses. If your cans are denting and/or collapsing when closing
the splash guard door then it is possible that the base force is too high.
(Note:
cans that are empty are much more likely to crush than a full can)
Before adjusting the base force, make sure the wave spring and washers are
located correctly inside the lower adapter (see MKseries SEAMER DIAGRAM).
To adjust the base force, first back off the lower base adjuster nut a couple turns.
Note: the lower nut
’s function is to take up play in the base adjuster. The upper
nut is used to set the actual base force.
Pull the splash guard’s magnetic base off the back panel and out of the seamer.
You will need an un-seamed can and end to set the base force.
Turning the upper base adjuster nut clockwise will increase the base force, while
turning it counterclockwise will decrease it.