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Problem
Tape is tabbing on the trailing leg
on the back of the box
The tape end does not stay in
application position in front of the
applying roller
Tape not centered on box seam
Cause
There is excess tension on the
tape drum assembly and/or the
one-way tension roller assembly
Rollers in the tape path do not
rotate freely
The blade is not cutting tape
properly
The tape is threaded incorrectly
Applying mechanism spring has
too little tension
The tape is incorrectly threaded
Flanged knurled roller overruns on
return of applying mechanism to
its rest position
Applying roller overruns on return
of applying mechanism to its rest
position
The one-way tension roller is not
correctly positioned
The one-way tension roller is
defective
Tape drum not centered
Centering guides not centered
Box flaps not of equal length
Correction
Adjust the one-way tension roller
and/or the tape drum assembly
Clean adhesive deposits from the
surface, ends, and shafts of the
rollers. Then lubricate roller
shafts. Remove all lubricant from
roller surfaces.
Refer to tape cutting problems
Rethread the tape
Move spring hook to next tighter
hole
Rethread the tape
Adjust tension roller position in
mounting slot to lengthen tape leg
There should be a slight drag
when rotating the applying roller.
If not, check friction springs and/or
friction pins and replace if
necessary
Position roller in it mounting slot so
that tape end extends beyond
centerline of applying roller
Replace the one-way tension roller
Reposition tape drum
Adjust centering guides
Check box specifications
Troubleshooting Guide
Troubleshooting (Continued)