Operating instructions

3. Description of the Function Keys
The values for the various functions can be set as follows:
–
Call up the desired function by pressing the appropriate function
key.
The function will be shown in the display with a blinking cursor.
–
Change the set value with the "
+
/
-
" keys.
–
Press the same function key again.
The change is completed.
The unit is ready to start again.
3.1 Selecting and Changing Sewing Length
With the
L1
,
L2
and
L3
keys three sewing lengths stored in memory
can be selected. A change of the sewing length can only occur before
the feed procedure has begun.
–
Select the stored sewing length by pressing the key
L1
,
L2
or
L3
.
The selected sewing length is shown in the right half of the first
display line.
–
If "
L?
" appears in the display, then a sewing length without an
allowable value in memory was selected.
Enter an allowable value with the "
+
/
-
" keys or select a different
sewing length.
–
Change the set sewing length with the "
+
/
-
" keys.
–
Press the function key (
L1
,
L2
or
L3
).
The set sewing length will be stored in memory.
It will remain in memory until it is changed again.
–
For further details see chapter 5 and 6 ("Sewing Programs").
CAUTION !
When changing the sewing length L1 it is essential that the corner
knife interval also be altered at the same time.
Setting the Corner Knife Interval
That sewing length which is most often sewn should be stored under
L1.
The interval between the corner knives must be set so that it is the
same as the sewing length stored under L1.
With all other sewing lengths the corner incision occurs seperately in
two strokes. After the incision of the first corner knife the material is
transported to the second corner knife.
Exception:
With Class
745-23
the corner knives must always be switched on or off
together.
Positioning the Material
–
With short seams under 75 mm place the material at the forward
positioning point.
–
If, by sewing lengths under 75 mm, the rear positioning point is
chosen, then the error message "
ERROR
" will appear in the
display. You must then change to the forward positioning point.
–
With placing at the rear positioning point the following condition
must be satisfied:
L1 - L2(L3) < 50
Otherwise the error message "
ERROR
" will appear in the
display. You must then change to the forward positioning point.
8