Assembling the remaining thread monitor
12 Additional Instructions 867/867-M PREMIUM - 00.0 - 07/2018
6. Assemble the compressed air maintenance unit (5) to the stand.
7. Use an R 1/4” hose coupling to connect the connection hose to
the compressed air supply.
8. Set the operating pressure to 6 bar.
9. Connect the hose (6) to the valve (7).
2.3 Setting the remaining thread monitor electrically
Important
The remaining thread monitor is delivered with a basic setting.
As a rule, the sensitivity of the residual thread monitor does NOT have
to be set!
The pre-set sensitivity of the remaining thread monitor may only be
changed if the remaining thread monitor is not working properly.
Fig. 9: Setting the remaining thread monitor electrically
After the machine has been switched on and before it starts sewing, the
remaining thread monitor is in setting mode.
To set the remaining thread monitor:
1. Switch on the machine.
2. Insert an empty bobbin into the hook.
3. Turn the hook to a position that the light beam falls through the slot in
the hook housing onto the bobbin.
4. Set the potentiometer (5) or (7) to the highest sensitivity.
To do this, turn the potentiometer clockwise.
(1) - Plug connection light barrier,
right hook
(2) - Plug connection light barrier,
left hook
(3) - Plug connection inputs and outputs
of the control
(4) - Plug connection switched output
(5) - Potentiometer left hook
(6) - LED
(7) - Potentiometer right hook
(8) - Plug connection auxiliary output
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