Dürkopp Adler 869 Operating Instructions Manual page 105

3
4
Subclass
869-180020
869-180112
869-180322
869-280020
869-280122
869-280322
Operation mode of the quick stroke adjustment
The activation period of the maximum sewing foot stroke depends on
the set operation mode. It is possible to choose between three
operation modes.
The individual operation modes are determined by the setting of the
parameters F-138 and F-184 at the control panel (see enclosed
instructions of the motor manufacturer).
Operation mode
Keystroke
F-138 = 0
F-184 = 0
Push-lock
F-138 = 1
Keystroke
with lowest
speed
F-138 = 0
F-184 0 < 100
Please note!
The switch 4 on the rear of the knee switch 3 can also be used to
switch between the "keystroke" and "push-lock" operation modes.
Hint!
In order to ensure an operation as safe as possible and a high
durability, the max. speed as shown in the chart should not been
exceeded.
Stitch length range
Setting wheel position
0-6
6-9
Operation / Explanation
The maximum sewing foot stroke remains activated
as long as the knee switch 3 is actuated.
The maximum sewing foot stroke is activated by
actuating the knee switch 3.
By actuating the knee switch once again the
maximum sewing foot stroke is deactivated.
The maximum sewing foot stroke remains activated
as long as knee switch 3 is actuated.
After releasing the knee switch the machine sews
with the maximum sewing foot stroke until the set
minimum number of stitches is reached (parameter
F-184).
Afterwards, the seam is continued with normal sewing
foot stroke.
Sewing-foot stroke
[mm]
1-3
4
5
6-9
1-4
5
6-9
max. Speed
[min ]
- 1
2800
2500
2100
1800
2900
2100
1800
25
GB