ERICO Standard Bar Threader - Manual (Page 14)

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Change Control Block
Wipe the holders clean of any chips and contaminants. The number 1 holder, with the slot in it to accept the control
block, must be replaced first, followed by holders 2, 3 and 4.
After the holders have been installed in the cutting square,
check that the numbers on the face of the holders match
the corresponding numbers on the cutting square face. Push the holders all the way against the back of the head and
check to make sure they do not protrude outside the head.
This would prevent free holder movement during threading.
If any holders do protrude outside, remove them and reclean
the head and holder(s). Also look over the holder for any burrs
that might need taken down with a stone.
After the holders fit into the head correctly, wipe off the
face plate and fasten it to the head.
Turn on the machine and move the body of the machine back
and forth to make sure the holders are opening and closing
properly. A “gushing” sound can be heard if they are working.
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