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17.10.2 Calibrate differential bottom feed
1. Lower the main feed such that it remains precisely under the throat plate.
2. Set the differential bottom feed to height 1.5 mm.
3. Select the menu Service > Service Calibrations > Motor Cal-
4. Lift the sewing feet and insert the strip of cardboard.
5. Press the pedal forwards.
11 stitches are sewn. The distance between the first and the last stitch
6. Repeat the sewing, until the distance is precisely 20 mm.
7. Repeat steps 3 to 6 for:
17.10.3 Calibrate differential top feed foot
1. Disassemble the calibrating foot.
2. Disassemble the adjusting needle.
3. Assemble the top feed foot and the center foot. The main feed remains
4. Change to manual mode MAN.
5. Set the fullness to 0 and the stitch length to 2 mm.
6. Run through 2 PTFE strips (0178 800033) with the material side facing
7. Select the menu Service > Service Calibrations > Motor Cal-
8. Repeat the sewing process in manual mode, until both PTFE strips are
9. Repeat steps 4 to 8 for:
10. Change to manual mode MAN.
11. Set fullness to 16.
12. Repeat steps 6 to 8 for:
13. Set the main feed to height 1.1 mm.
86
Check manually, that no parts can collide during the movement.
ibration > Motor Bottom Diff 2mm.
should be precisely 20 mm. If required, change the distance with +/-1
or +/-10.
If the distance is to be reduced, enter a smaller minus figure. If the dis-
tance is to be increased, enter a higher minus figure.
• Motor Bottom Diff 3mm (30 mm)
• Motor Bottom Diff 4mm (40 mm)
• Motor Bottom Diff 6mm (60 mm)
lowered. The differential bottom feed and differential top feed are in
mesh.
outward. The strips should be fed through perfectly aligned.
ibration > Motor Top Diff 2mm and change the value, if required,
using +/- or +/-10.
fed through perfectly aligned.
• Motor Main 3mm (30 mm)
• Motor Main 4mm (40 mm)
• Motor Main 6mm (60 mm)
Software settings
Service Instructions 610/630 - 00.0 - 10/2014
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