Seal Control - T&D fromm A391.0002 Operation Manual

10 SEAL CONTROL

A regular control of the seal is necessary. The seal can be checked visually and the person controlling can
easily judge the quality of the seal. When checking the seal the following illustrations must be compared.
Correct seal
A correct seal must be conform to the illustration. This means that the depth with which the upper strap hooks
into the lower one must be 1 - 1.5 mm in min. and 2 mm in max.. The upper strap must be sheared clean and
the cutter must not leave scratch marks on the lower strap.
Incorrect seal (the sealing mechanism is adjusted too high)
This stamped seal is not deep enough and the upper strap is not sheared.The tensile strength of this seal is
insufficient and the strapping must be taken away from the package. The tool must be readjusted immediately
(see SEAL ADJUSTMENT).
Incorrect seal (the sealing mechanism is adjusted too low)
This stamped seal is too deep and the lower strap is scratched by the cutter. Although the tensile strength of
this seal is sufficient the strapping must be taken away from the package because of the scratched lower
strap. The tool must be readjusted immediately (see SEAL ADJUSTMENT).
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