Operating instructions

10.4 Testing the Zipper Cutter (745-22)
Program P52 can start a zipper cutter cutting sequence.
–
Set the "
Program
" switch to "
52
".
–
Press the "
STOP
" key.
The program is activated.
–
Press the "Σ" key.
The zipper cutter cutting sequence is started.
–
If the transport carriage is not in its rear position, this is shown by
the symbol "
<---
".
–
Step back on the left pedal.
The transport carriage runs to the rear.
10.5 Checking Needle and Center Knife Actuation
Program P53 checks the actuation of the needles and center knife with
the sewing drive running.
–
Set the "
Program
" switch to "
53
".
–
Press the "
STOP
" key.
The program is activated.
–
Set the desired revolutions (1 - 13) with the "
Program
" switch.
The lower display line shows the set value belonging to the
selected revolutions.
–
Press the "Σ" key.
The sewing drive starts and runs until the "Σ" key is pressed again.
When the sewing drive is stopped there is a positioning sequence
in the 2nd needle position (needle up).
–
The needles and the center knife can be actuated at any time by
pressing the key "
L1
" (needles) and "
L2
" (center knife).
CAUTION !
When exiting program
P53
it is essential that the machine head be
allowed to run for a short time with needles and center knife shut off.
Otherwise the next seam will not be sewn correctly.
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