Cutting Pressure And Thread Gripper Plate - Duerkopp Adler 550-12-12 Service Instructions Manual

8.2 Cutting Pressure and Thread Gripper Plate

36
1
The setting of the thread trimmer occurs with it removed from the unit.
Caution Risk of Injury !
Before removing the thread trimmer turn the main switch off.
–
Remove the thread trimmer.
–
Loosen screws 1.
–
Align the tip of the movable hooked knife 4 to the lower edge of the
fixed knife 3 (see circle).
–
Tighten screws 1.
–
Conduct a cutting trial with thread.
If a clean cut is not achieved, check the knife for sharpness or
insert a new sharp knife.
–
Loosen the lock nut on the pressure screw 5.
By screwing in the pressure screw 5 a little set the movable hooked
knife 4 to cut.
Check the hooked knife for ease of movement !
Tighten the lock nut again.
–
Set the thread gripper plate 2.
The thread gripper plate 2 shold the trimmed thread end lightly
clamped for a secure seam beginning.
A clamping plate set too tightly can cause bunching at the seam
beginning.
ATTENTION !
In the illustration the clamping plate is turned to the side in order to
give a better view of the position of the hooked knife.
In the correct position it is exactly over the fixed knife 3.
–
Under the knife there is a second clamping plate as height
compensation for the knife. This must always be present!
–
Check to see if the lower thread and the rear thread of the upper
thread loop caught by the hooked knife (see illustration on page
33) !
–
Install the thread trimmer.
2
3
4
5