Adjustment Of Each Part; Adjusting The Pressure Of The Cloth Trimming Knife - JUKI MEB-3810N Series Instruction Manual

8. ADJUSTMENT OF EACH PART

8-1. Adjusting the pressure of the cloth trimming knife

WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, keep away from the looper thread trimming knife and
cloth trimming knife during the adjustment procedure.
* The pressure of the cloth trimming knife can be changed.
* Normally, the cloth trimming knife is able to cut the material with its standard pressure. However,
the pressure may be inadequate for some sewing materials and sewing conditions. In this case,
the air pressure can be set to 0.4 MPa at the maximum. Adjust the pressure to any value below
the maximum pressure.
* Air pressure has to be changed after the hammer surface and condition and mating surface of
the knife blades have been properly adjusted and carefully checked.
* The pressure value should be gradually increased from the lower value while checking whether
the knife cuts the material with each pressure value.
■ Adjusting the knife pressure
The pressure of the cloth trimming knife is adjusted
by the air pressure of the regulator for adjusting the
cloth cutting knife pressure.
The standard pressure has been factory-set at 0.35
MPa.
Set the knife pressure as low as possible
in order to maintain durability of the knife
blades and the hammer.
Excessively high pressure can cause a
chipped or nicked edge of the knife blade.
Adjust the pressure to any value below the
maximum pressure (0.4 MPa).
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