3M 3M-Matic 800a, Instruction Manual

Page: 105 / 130

15
Adjustments
(continued)
Applying Mechanism Spring
To obtain access to the spring, remove the taping
head cover (four mounting screws). Replace cover
when
fi nished.
The applying mechanism spring, shown in
Figures 5-4A and 5-4B
, controls applying and
buf fi ng roller pressure on the box and returns
the mechanism to the reset position. The spring
pressure is pre-set, as shown in
Figure 5-4A
for
normal operation, but is adjustable.
If a tape gap appears on the trailing surface of the
box increase spring pressure. If the front of the box
is being crushed by the applying roller decrease
spring pressure.
Removing the spring end loop from the spring holder
and placing loop in other holes provided, as shown
in
Figure 5-4B
, will adjust the spring pressure.
To Adjust Tension:
1. Wrap a cord or small strap (non-adhesive) 4-6 turns
around the tension roller.
2. Attach a spring scale to the end of the cord or strap.
3. Turn the adjusting nut with the socket wrench
provided, until a force of approximately 0.5 kg to 0.9
kg [1 to 2 lbs.] is required to turn the roller by pulling
on the spring scale.
One-Way Tension Roller
Figure 5-5
The one-way tension roller is factory set. When
replacing this assembly, the roller must have
0,5 kg [1 lb.] minimum tangential force when turning.
Figure 5-4 – Applying Mechanism Spring
Figure 5-5 – One-Way Tension Roller
(Adjustments continued on next page.)
0.5 - 0.9kg
[1/2 lbs.]
Adjusting Nut
AccuGlide 3 - 2" - NA
2012 January
WARNING
•
To reduce the risk associated with
shear, pinch, and entanglement
hazards:
-
Turn air and electrical supplies off
associated equipment before perform-
ing any adjustments, maintenance, or
servicing the machine or taping heads.
- Never attempt to work on the taping
head or load tape while the box drive
system is running
A
B