4.6
Device for blowing the piping strip / pocket bag for 745-34 A/B/F
In case of class 745-34 B and F the clamps K 12, K 13 and K 16 are
equipped with a device for blowing the piping strip. For clamp K 19
(745-34 A) the optional set of parts 0745 597884 for blowing is
available. Furthermore blowing pipes are integrated in the folding
sheets and piping clamps. The blowing of the piping strip / pocket bag
can be necessary in case of thin fabrics and/or high piping projection.
Standard checking
The air stream escaping from the blowing pipes 3 and 6 has to be
adjusted in such a way that the piping strip 4 is sufficiently blown on
the pick-up folder 5 and safely guided into the guide plates 1.
Correction
–
Select the pedal mode “Mode 3” from the pocket parameters.
Select the mode Pocket bag / Blowing of pipings “Mode 2”.
–
Load piping and pocket bag as instructed.
–
Start the loading process and step on the left pedal until the piping
strip is fed and the folding sheets are closed.
–
Loosen the clamping screws 2 and adjust the blowing pipes 3 in the
folding sheets by turning.
–
Adjust the blowing air pressure at the throttling valve 8. If required,
undo the loading process by stepping back the left pedal until the
clamping screws 2 are accessible.
–
Tighten the clamping screws 2 again.
–
Step on the left pedal until the pocket bag is fed and the flap clamp
is closed.
–
Loosen the screws 7 and adjust the blowing pipes in the flap
clamps 6 by turning.
–
Adjust the compressed air at the throttling valve 9.
–
Tighten the screws 7 again.
–
Step on the left pedal.
The sewing process starts.
Check the feeding process.
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