Thread Cutting; Resetting Upper-Thread Tension To Default - Bernina B 590 Service And Maintenance Manual

6e Thread cutting
Is used to carry out, step by step, thread cutting function test
Check:
• Select test 6e.
• Press thread cutter key to change between the different
processes.
• A new window opens, and the first step is prompted.
• Press green check key
steps in total). See table:
Prompt:
Start thread cutting sequence
Lower thread in thread reservoir
Open thread tension
Upper thread caught by thread catcher
Close thread tension
Separate upper and lower thread
Restore thread tension
Tension sequence finished
* Value in degree on machine can slightly differ from given value
6f Resetting upper-thread tension to default
Is used to reset from customer changed tension value
Check:
• Select test 6f.
• 'To Reset Tension Press OK' appears.
• Press
to continue.
• 'Do you really want to reset?' appears.
• If the answer is Yes, press
thread tension to default and return to section 6.
• If the answer is No, press
thread tension settings and return to section 6.
BERNINA International AG
to see the next step (8
Action
Start thread cutting sequence
Lower thread cached by tread catcher
Thread tension open
Upper thread cached by tread catcher
Thread tension closed
Upper and lower thread cut
Thread tension restored
Tension sequence finished
to reset the upper-
to leave the upper-
Seestrasse 161 CH-8266 Steckborn
DRAFT – VERSION
(needle position)
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* Base shaft
position
211.00
35.00
137.00
143.00
179.00
185.00
212.00
212.00