– 22 –
Trouble of sewng (slp-off of needle thread, sttch skppng, or stan of needle thread) at the tme of hgh-
speed start can be prevented wth the thread clamp devce.
The thread clamp devce wll operate when the thread clamp button has been selected
, but t wll
not operate when the thread clamp button has not been selected
.
Changeover of ON/OFF moton s performed wth
key. When the thread graspng devce s n the
OFF state, the sewng machne s automatcally set to the soft-start mode.
1. When memory switch
is "1" (prohibited), the thread clamp does not work. Fur-
thermore, the thread clamp key
will not be displayed.
2. Memory switch, refer to
"
-2-28. How to change the memory switch data”, p.93
* Matters that demand special attention when using the needle thread clamp
(1) In case of wth the needle thread clamp (moton), make shorter the length of needle thread reman-
ng on the needle at the sewng start for use. When the length of needle thread s lengthened,
needle thread on the wrong sde of materal s apt to protrude. In addton, when the length s
excessvely lengthened, the end of needle thread held by the needle thread clamp may be rolled n
the seams.
5-3. thread clamp device
1)
3)
33 to 36 mm
10mm
(right side)
(Wrong side)
needle thread
When the sewng length s short (less than ap-
proxmately 10 mm), the end of needle thread may
protrude lke beard even when adjustng needle
thread shorter.
1) In case of wth the needle thread clamp, the
standard of the length of needle thread s 33
to 36 mm.
2) When needle thread s long after replacng
thread or the lke or sewng whle holdng nee-
dle thread by hand, turn OFF the THREAD
CLAMP
key.
3) When the needle thread held wth the thread
clamp s rolled n the seams, do not draw the
materal forcbly and cut the connectng needle
thread wth the scssors or the lke. The seams
are not damaged snce t s the needle thread at
the sewng start.
(2) It s possble to adjust needle thread shorter by makng the needle thread clamp work whle holdng
the stablzed sewng at the start of sewng and the gatherng (brd's nest) of needle thread on the
wrong sde of materal can be lessened. However, for the pattern whch the sttch length for neatly
rollng n needle thread s short, needle thread may protrude from the wrong sde of materal. Select
wth/wthout thread clamp referrng to the tem below.