Adjustment Of The Pressure Of The Work Clamp Unit; Setting Of The Material Closing Operation - JUKI LK-1900A Instruction Manual

5. Adjustment of the pressure of the work clamp unit

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
1) The pressure of the work clamp unit should be minimized as long as the material does not warp during
sewing. Loosen adjusting screw

6. Setting of the material closing operation

1) The material closing operation is performed by the electromagnetic solenoid, and change-over of the
operation setting (effective / ineffective) is available. The material closing has been set to work
simultaneously with sewing at the time of delivery.
2) If the material closing is not performed, the change-over is made by the memory switch. For the way of
operation, refer to item "How to use the memory switch" described in the instruction manual for the LK-
1900A.
List of memory switch functions
No. Function
50
Setting of material closing
operation
Setting range "1" : The material closing simultaneously works when the work clamp foot comes down.
Setting range "2" : The material closing simultaneously works with the sewing after the work clamp foot
has come down.
As for the contents of memory switch function Nos. other than memory switch No. 50, refer to the list of
the memory switch functions described in the Instruction Manual for the LK-1900A.
q
and turn adjusting screw
Setting range
0 : Ineffective
1 : Synchronized with work clamp
foot
2 : Synchronized with start
61
w
q
w
to obtain the aforementioned pressure.
State at time of delivery
2