FS4.1893-Manual-30.18XX.02-EN-Version02_R1
FROMM
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MAINTENANCE INSTRUCTIONS
Check the function of the rollers of the carriage unit as
follows.
a) Select manual program.
b) Travel the carriage up 1 meter.
c) Loosen the limit switch at the bottom of the pre-stretch
unit which detects the yellow plate under the limit switch.
d) Loosen the protection plates (1) by first easing their
screws (2) that are located on the far top and bottom of the
carriage unit that holds the pre stretch unit.
e) Place a sturdy stool under the pre-stretch unit.
f) Travel the pre-stretch unit slowly down and halt it when it
rests on the stool.
g) Loosen the two screws on the top of the mast that hold
the profile (3).
h) Loosen the profile (3) by drawing it out slightly farthest up
and then drawing it upwards.
i) Release the profile (four screws) that holds the cable chain
at the side of the pre-stretch unit.
j) Release the pre-stretch unit using the six screws that face
the carriage.
k) Travel the carriage slowly upward and halt it above the
pre-stretch unit.
l) Feel whether or not there is any play in the carriage.
m) Loosen the nuts (4) slightly.
n) Turn the wheel unit (5) counter-clockwise in the grooves.
o) You can now lift out the carriage to examine the rollers. If
they are worn they must all be replaced, including their ball-
bearings.
p) Assemble the carriage and turn the wheel-holders until
there is no gap. Travel the carriage up and feel to ensure
that there is no resistance.
q) Assemble the other parts in reverse order.
NOTE!
Watch out for your fingers
!
After adjusting the height of the pre stretch unit, switch off the machine accordingly SAFTEY
precautions.
