Maxi Comet Executive Exec-56-G - Page 147

Comet Executive Gas Repair
7-39
9. Repeat Steps 6 to 8 to replace additional
worn ribbons. Stagger the positions of the
lacing clips to give the atwork a smooth
ow.
10. Remove the wire/string/guide tape holding
the return ribbon guide assembly in the
high position.
11. Verify the return ribbon tension spring
is functioning correctly; refer to Return
Ribbon Tension Spring Replacement
on page 7-37.
12. Reinstall the protective backplate at the
rear of the unit. This piece should be
handled by two maintenance personnel.
Replacing Broken or Missing Ribbons
Ribbons that break should be replaced
immediately. To avoid excessive stress on only
one new, slightly shorter ribbon, the entire set of
ribbons should be replaced. At a minimum, it is
recommended that ribbons be replaced in pairs.
Required Tools
Allen wrench: 5/32”
Pliers
Wire/string/guide tape
Perform only when the unit is OFF
with power disconnected and COOL.
1. Verify the replacement ribbons are the
correct size and sucient quantity for
completing the procedure. See Rolls and
Ribbons on page PL-6.
NOTE: HI-LYFE™ extended
wear ribbons are available. These
ribbons provide superior quality
atwork nish. Specify HI-LYFE
extended wear ribbons when
reordering.
2. Turn power OFF at the main disconnect
switch.
3. Remove the protective backplate at the
rear of the unit. This piece should be
handled by two maintenance personnel.
4. Release tension on the return ribbons. Se-
cure the return ribbon guide assembly in a
high position by tying o from above with
wire or string or guide tape (Figure 7-34).
5. Remove a ribbon from both ends of the
unit and use one or both as replacement
ribbons. These end ribbons can then be
replaced by a pair of new ribbons.
WARNING
Never start the unit while
installing the return ribbons.
It is dangerous
and unnecessary.
6. Move to the front of the unit at the posi-
tion where a ribbon is broken or missing.
Fold the replacement ribbon in half. Do
not crease the ribbon.
NOTE: Whether using Nomex
or HI-LYFE ribbons, make sure
the darker side of the ribbon will
face the ironing cylinder.
7. Place one end of the replacement ribbon
over the return ribbon drive roll and one
end beneath, making sure the slightly
darker side will face the ironing cylinder.
8. Move to the back of the unit where both
ends of the ribbon are now exposed. Wrap
the top end of the ribbon around the cyl-
inder. Refer to Figure 7-32.
9. Pass it under and around the top idler roll;
next, pass it over the second idler roll so
it is hanging down the back of the unit.
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