Repair GL16
7-18
5. Turn power ON at the main disconnect
switch. Turn the SPEED knob to the
slowest speed.
6. Press the green START button and run
the unit briefly to make sure the ribbons
track straight.
7. If the tension on the ribbons is uneven,
ribbons will track toward the end of the
drive roll where the tension is highest.
Press a red STOP button and turn the
power OFF at the main disconnect switch.
8. Either turn the adjusting screw counter-
clockwise at the high tension end, or turn
the adjusting screw clockwise at the low
tension end.
9. Repeat Steps 5 to 8 until the ribbons have
the correct tension and track evenly.
10. Stop the unit and turn the power OFF at
the main disconnect switch. Secure the
locknut on each adjustment screw.
11. Close and secure the end frame doors
WARNING
The safety interlock switches
are only to be defeated
temporarily while the
procedure is being done.
NEVER operate the unit
unless all safety systems are
working correctly.
Serious Injury Could Result.
Delivery Ribbon Replacement
Delivery ribbons stretch over time. When the
tension on the delivery ribbons can no longer be
adjusted, the entire set of ribbons must be
replaced.
Ribbons that break should be replaced
immediately. The entire set of ribbons should be
replaced in order to avoid excessive stress on only
one new, slightly shorter ribbon. At a minimum, it
is recommended that ribbons be replaced in pairs.
Replacing Broken or Missing Delivery
Ribbons
1. Verify the replacement ribbons are the cor-
rect size and there is sufficient quantity to
complete the procedure. See the PARTS
LIST.
2. Turn the power OFF at the main discon-
nect switch.
3. Open the end frame doors and locate the
adjusting screws (Figure 7-18, A), which
secure the delivery idler roll bearings in
position. Loosen the locknuts (B) and back
off each adjusting screw the same num-
ber of turns counterclockwise until the rib-
bons are easily moved by hand.
4. If replacing all of the ribbons, remove the
ribbons at this time. Otherwise, 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.
5. Move to the front or rear of the unit at the
position where the ribbon is missing. Fold
the replacement ribbon in half with the
seams on the inside. Do not crease the
ribbon.
Perform only when the unit is OFF
(with power disconnected) and COOL.
Required Tools
wrench
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General