– 17 –
The machine detects the number of stitches. The preset value on the bobbin thread counter is subtracted in
accordance with the number of stitches detected. (Every time the detector detects 10 stitches, 1 is subtracted
from the preset value on the bobbin thread counter.) When the value on the counter becomes a minus value as
( ........
→
1
→
0
→
–1), the buzzer (peeps three times) and the pop-up display inform that the time to change the
bobbin thread has come.
4-3. How to use the bobbin thread counter
1) Press switch
笊
to select the bobbin thread counter. Then
press counter reset switch
笆
to return the value indicated
on the bobbin thread counter to the initial value (it has
been factory-set to “0” at the time of delivery).
2) Set an initial value using counter value setting switches
笳
and
笘
.
Initial value on the bobbin thread counter
for reference
The bobbin thread counter cannot be
reset during sewing. In this case, make
the thread trimmer actuate once.
Cau tion
If the bobbin thread counter is used in combination with the bobbin thread remaining amount detecting
device, the bobbin thread counter indicates the number of times of detection of the bobbin thread
remaining amount detecting device. So, be sure to use the device after carefully reading the Instruction
Manual for the bobbin thread remaining amount detecting device.
Cau tion
笊
笆
笳
笘
3) Once the initial value is specified, start the sewing machine.
4) When a minus value is shown on the counter, the buzzer peeps three times and the pop-up display appears,
replace the bobbin thread.
Bobbin thread replacement warning pop-up
5) After the bobbin thread has been properly replaced, press counter reset switch
笆
to return the value on the
bobbin thread counter to the initial value. Now, re-start the sewing machine.
6) If the remaining amount of bobbin thread is excessive or the bobbin thread runs out before the bobbin thread
counter indicates a minus value, adjust the initial value appropriately using counter value setting switches
笳
and
笘
.
If the remaining amount of bobbin thread is excessive ..... Increase the initial value using the “+” switch.
If the remaining amount of bobbin thread is insufficient .... Decrease the initial value using “–” switch.
* Actually, the bobbin thread counter is affected by the material thickness and the sewing speed. So, adjust the
initial value of the bobbin thread counter in accordance with the operating conditions.
The table below gives the initial setting values for reference
when the bobbin is wound with thread to the extent that
the pinhole in the outside of the bobbin case is reached
as shown in the figure on the left side.
Length of thread
wound round the
bobbin
36 m
31 m
Thread
used
Polyester spun
thread #50
Cotton thread #50
Value on bobbin
thread counter
1200
(stitch length : 3 mm)
1000
(stitch length : 3 mm)
Thread tension rate 100 %
Содержание IP-100
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