3M 40800 Manuale Utente

28 

12-OPERATION (continued)

12.9  Troubleshooting Guide (continued)

  The blade does not cut tape
  or the tape end is jagged or
  shredded

  Tape is tabbing on the trailing
  leg on the back of the box

  The blade is dull and/or has
  broken teeth

  Tape tension is insuffi cient

  Adhesive has built up on the
  blade

  The blade is in backwards

  One or both cutter springs are
  missing or stretched

  There is excess on the tape
  drum assembly and/or the 
  on-way tension roller assembly

  Rollers in the tape path do not
  rotate freely

  The blade is not cutting tape
  properly

  The tape is threaded incorrect

  Applying mechanism spring
  has too little tension

  Replace the blade

  Increase tape tension by

  adjusting the one-way roller

  Clean and adjust the blade

  Make sure the blade is

  bottomed out against the

  mounting bolts

  Lubricate the blade oiler pad

  on the blade guard

  Mount the blade so that the

  beveled edge is away from the 

  entrance end of the head

  Replace the defective spring(s)

  Adjust the one-way tension

  roller and/or tape drum
  assembly

  Clean adhesive deposits from

  the surface ends and shafts

  of the rollers.  Remove all
  lubricant from roller surfaces

  Refer to tape cutting problems

  Rethread tape

  Move spring hook to next

  tighter hole

2011 June

700a-NA