3M 3M-Matic 800asb, Instructions And Parts List, Page: 30 / 78

25
Taping Head Adjustments
See Section
II
for 1-1/2 Inch Taping Heads
Adjustments
Drive Belt Tension
Tension adjustment of the drive belts may be required during normal operation. Belt tension must be adequate to
positively move the box through the machine and they should run fully on the surface of the pulleys at each end of
the frame. The idler pulleys on the infeed end are adjusted in or out to provide proper belt tension. Each belt is
adjusted separately.
Belt tension is obtained by tightening the adjustment screw so that a moderate pulling force of 3.5 kg [7 lbs.]
applied at the midspan, as shown in Figure 4-4, will deflect the belt 25 mm [1 in]. This will assure positive contact
between the belt and the drive pulley on the discharge end of the taping head.
To adjust belts, see "Maintenance – Drive Belts", page 22.
WARNING – Turn off electrical power supply and disconnect power cord from electrical
supply before beginning adjustments. If power cord is not disconnected, severe injury to
personnel could result.
TAPE WEB ALIGNMENT – Section
II
, Page 11
TAPE DRUM FRICTION BRAKE – Section
II
, Page 11
APPLYING MECHANISM SPRING – Section
II
, page 11
ONE-WAY TENSION ROLLER – Section
II
, page 12
TAPE LEG LENGTH
Leading Tape Leg Length Adjustment – Section
II
, Page 13
Changing Tape Leg Length from 50 to 70 mm [2 to 2.75 In] – Section
II
, page 13.
Note – Changing tape leg to 70 mm [2.75 in] requires machine adjustment also. See Section
I
,
"Special Set-Up Procedure – Changing Tape Leg Length", page 28.
Note – Although the upper taping head is built into the machine frame, it has the same components
(except for side frames) as the lower head. Adjustments are the same as lower head.