Functional Test - Pfaff 3119 Instruction Manual

Adjustment
13

Functional test

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● Dismount needle thread cutter 1.
● Carry out a functional test according to the requirements.
● If necessary, adjust clamp spring 2 or roughen the clamping surfaces.
● Fit the needle thread cutter 1.
13 - 27
Requirement
1. An inserted thread should be cut cleanly by needle thread cutter 1.
2. After cutting, the thread end should be clamped in such a way that the needle thread
cutter 1 is held on the thread.
Fig. 13 - 24
If the thread is damaged during clamping, the clamp hold is too tight. There
should be no sharp edges on the clamping surfaces of the top cutter section 3,
but this must have an adequate clamping surface.
Smooth clamping surfaces have a negative effect on the clamping action.
3
2
1