Technically Speaking: BERNINA 535, 480, 475 Top
Tension Not Releasing
Recently we were made aware of an intermittent issue with top tensions not releasing after a thread cut, thus causing
tension issues and bird nesting.
When an operator selects the auto thread
cutter and does not wait until the cutting
process is complete, lifts the presser foot
by hand or by FHS, there is a sporadic
chance the top tension is not releasing.
We have also seen the hour glass icon
spinning.
With machines that have an automatic
presser foot lifter the timing between cutter and lifter action is governed by the
FW, therefore we do not see such issues.
For right now we can provide this solution.
If such issues appear, please let the consumer know to slow down and let the
machine cut the thread first before the
presser foot is lifted.
Lowering and then raising the presser
foot bar should release the top tension
disks. This may take 2-3 times to release.
If the hourglass appears it maybe required to reboot the machine.
- US Warranty 25 years head, 5 years electronics, 1 years labor
- Non-US Warranty: 30 days parts and labor
5 Presser Feet:
Reverse Pattern Foot #1
Overlock Foot #2
Buttonhole Foot #3A
Zipper Foot #4
Open Embroidery Foot #20
Additional Accessories:
Instruction Manual
Power Cord
BERNINA Foot Control
Free Hand System
Slide-on Table (no guide)
Soft Cover
Accessory Wardrobe (magnetic and attachable)
1 Pkg. Asst. Needles
Height Compensation Tool
Seam Guide Right
Touch Screen Pen
Oiler
5 Bobbins (total)
Seam Ripper
Lint Brush
2 Foam Pads
3 Spool Caps
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