Strobel KA-ED - Page 60

56 BA_KA-ED_A22_190313_en.doc
 Rolling is too weak
Possible reasons:
- The differential transport (rear pushing roll (6) Fig. 28) transports too little.
- The contact pressure of the contact roller in the rear is too little.
- The thread tension is too little.
- The stitch distance is too great.
- The foam rubber ((7) Fig. 28) is worn.
Solutions:
- Set the differential transport drive (contact roller in the rear) see point
“5.9.2 Rear differential transport drive (Fig. 27)“.
- Increase the contact pressure differential transport drive see point “5.9.3
Surface pressure start-up reel“.
- Increase the thread tension see point “4.3 Thread monitor.
(Fig. 8a and b)”
Turn the knurled nut ((1) Fig. 8a und b) to the right (the thread tension
decreases to the left).
- Reduce the stitch distance see point “4.10 Setting the seam distance (Fig.
13)“.
- Replace the foam rubber ((7) Fig. 28).
 Rolling is too strong
Possible reasons:
- The differential transport (rear pushing roll (6) Fig. 28) transports too
much.
- The contact pressure of the contact roller in the rear is too great.
- The thread tension is too great.
- The stitch distance is too little.
Solutions:
- Set the differential transport drive see point “5.9.2 Rear differential
transport drive (Fig. 27)“.
- Reduce the contact pressure of the contact roller in the rear see point
“5.9.3 Surface pressure start-up reel“.
- Reduce the thread tension see point “4.3 Thread monitor
(Fig. 8a and b)”
Turn the knurled nut ((1) Fig. 8a und b) to the left (the thread tension
increases to the right).
- Increase the stitch distance see point “4.10 Setting the seam distance (Fig.
13)“.