Operation Manual

9. Optional Equipment

9.1 Electropneumatic Seam Bartacking and Sewing Foot Lift (RAP 13-4)

The electropneumatic seam bartacking and sewing foot lift (

RAP 13-4

) is only available

for special sewing machines with thread trimmer (Subclass

467-183 081

It makes possible the following supplementary functions:

–

Beginning and end bartack sewing, foot-operated (via pedal)

–

Bartack suppression

–

Stitch-in-stitch sewing (fancy bartacking)

–

Intermediate bartack sewing, hand-operated (via key on the machine arm)

–

Sewing foot lift, foot-operated (via pedal)

9.1.1 Function

Seam bartacking

–

At the beginning of the bartack the piston rod of cylinder 1 runs out and moves the

stitch regulator into the position for sewing in reverse.

–

The machine sews in reverse as long as the piston rod is run out.

The stitch length corresponds to the stitch length set for sewing forward.

During the seam bartacking, the bartacking rpm (factory setting 1200 min

-1

) is in

effect.

Sewing foot lift

–

Step the pedal half back.

The piston rod of cylinder 3 runs out and operates the lever 4 via the slide 2.

–

The sewing feet lift.