Operating instructions

9. Optional extras
9.1 HP 11-1 pneumatic rapid stroke adjuster
The HP 11-1 pneumatic rapid stroke adjuster is only available for special sewing
machines with the
Quick QD554/A51K01
sewing drive.
This optional extra allows a larger sewing-foot stroke to be set in mid-seam
(e.g. for thicker pieces of material or to oversew transverse seams).
–
Operate knee switch 1.
This activates the maximum sewing-foot stroke, which has two operating modes.
Operating modes
The rapid stroke-adjustment mechanism can be used in either
switch
or
touch mode
.
The desired operating mode is determined by the setting of parameter number
401
at
technician level - see servicing instructions or motor manufacturer’s manual (supplied).
mode operation / explanation
switch mode activated until the knee switch is operated again
401 = I - Operate knee switch.
The maximum sewing-foot stroke is activated.
- Operate knee switch again.
The seam is continued with the set sewing-foot stroke.
touch mode activated until the knee switch is released
401 = II - Operate knee switch and hold it in place.
The maximum sewing-foot stroke is activated.
- Release knee switch.
The seam is continued with the set sewing-foot stroke.
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