JUKI MF-7200D/U45, Instruction Manual

Page: 59 / 260

– 21 –
)
. ADJUSTING THE AIR-BLOW WIPER (UT45)
1. Installing the air-blow wiper
1) When usng ar-blow wper
1
, remove the top cover-
ng thread trmmer devce.
2) Tghten ar-blow wper
1
wth setscrews
2
.
3) Perform ppng referrng to “
$
. AIR PIPING DRAW-
ING (UT45)” .
1
2
3
• When air blows in front of the needle, needle
thread slips from the needle eyelet. So, be
careful.
• Adjust the air-blow strength with speed
controller
3
.
• Handwheel may rotate up to the fixed position
when turning ON the power. So, be careful.
2. Adjusting the air-blow wiper
Adjust the ar-blow poston of ar-blow wper
1
.
1) Adjust so that the ar outlet of ar-blow wper
1
s
postoned n the rear of needle and slghtly on the
lower sde of needle eyelet of the left needle when
the needle bar s n the hghest poston.
2) After the adjustment, temporarly tghten setscrews
2
.
3) Supply ar from the ar compressor and turn the
power ON.
4) When the back part of the pedal of sewng machne
s depressed, the presser goes up and smultane-
ously ar blows from ar-blow wper
1
. Re-adjust the
poston of ar-blow wper
1
so that ar blows only to
the needle thread n the rear of the needle eyelet.
5) After the re-adjustment, tghten setscrews
2
.
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest. In addition, cut the
air supply from air compressor.
– 18 –
ENGLISH
1. Adjusting the engagement of knives
1) Adjust so that the engagement of fixed knife
1
wth movng knfe
2
s 0.5 mm.
2) When adjustng the engagement, loosen set-
screws
4
and move knfe holder
5
up or down
to adjust.
2. Adjusting the pressure of clamp spring
1) Top coverng thread s held wth clamp sprng
3
after thread trmmng.
2) Holdng pressure can be adjusted by loosenng
nut
6
and turnng screw
7
.
3) Holdng pressure s ncreased when tghtenng
screw
7
and t s decreased when loosenng
screw
7
.
4) After the adjustment, tghten nut
6
.
5) Make the holdng pressure as low as possble
wthn the range of holdng the top coverng
thread.
3. Adjusting the position of the blade
point of moving knife
1) Brng the needle bar to ts hghest poston.
2) When hnge screw
8
s lowered, movng knfe
2
lowers together.
3) Adjust the movng knfe to the poston where the
hook secton of movng knfe
2
enters the con-
cave of the bottom surface of spreader
9
and
catches the top coverng thread n the state that
movng knfe
2
s fully lowered. After the adjust-
ment, tghten screws
!0 !1
and
!2
.
4) Screws
!2
are for adjustng vertcal poston of
the knfe, screws
!0
for adjustng lateral poston
of the knfe, and screws
!1
for adjustng angle of
the knfe.
*
. ADJUSTING THE TOP COVERING THREAD TRIMMER MECHANISM (UT45)
Make sure that the moving knife does not
interfere with other components such as
presser, needle, spreader, etc. within the
working range of moving knife
2
.
0.5 mm
1
2
3
4
5
6
7
8
Top covering thread
9
!1
2
!0
!2
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after
turning the power off and ascertaining that the motor is at rest. In addition, cut the air supply from air compressor.