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2 measuring the lower tension – Checkline MST User Manual

Page 11

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Requirements:
- FIXTURE TO DETERMINE BOBIN CASE removed from POSITION 1 and screwed in
at POSITION 2.
- Tension meter switched on as described in Chapter 3.2.1.
- Damping factor set, if necessary (Ch. 3.3.4)
- Zero adjustment carried out as described in Chapter 3.2.3.

To insert the process material:
- Slip the BOBBIN CASE with the full lower-thread bobbin onto the FIXTURE TO
DETERMINE BOBIN CASE- Properly insert the LOWER THREAD from the bobbin into
the BOBBIN CASE.
- Thread the lower thread through the first ceramic eye,
- and then through the MEASURING ROLLERS (see material path symbol on front side).
It is important to assure that the LOWER THREAD runs smoothly between the
MEASURING ROLLERS.
- Thread the lower thread through the second CERAMIC EYE,
- and clamp it in the rubber groove of the TAKE OFF ROLLER.

3.3.2 Measuring the Lower Tension

To measure the process material:
- Press the ON / OFF button to switch on the motor-driven TAKE OFF ROLLER.
The tension meter starts measuring.
- The DISPLAY shows the measured tension values.
You can simultaneously set the desired lower tension at the corresponding setscrew of
the BOBBIN CASE.
If any error messages occur during measurement, please refer to Chapter 3.5 for details.

To remove the process material:
- Press the ON / OFF button to switch off the motor-driven TAKE OFF ROLLER.
- Remove the LOWER THREAD from the MEASURING ROLLERS and cut it off at the
TAKE OFF ROLLER with the supplied scissors.

LOWER THREAD

MEASURING ROLLERS

DELIVERY

ROLLER

2nd CERAMIC EYE

1st CERAMIC EYE

FIX-

BOBBIN CASE

POSITION 1

POSITION 2