kansai DWR-1900 Series User manual

Industrial Sewing Machines
lllansaillpecial
INSTRUCTION
MANUAL
[MR-1900 senes
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1902-2U
1902U
19003U
19004U
1902-2U/UTC
1902U/UTC
19003U/UTC
19004U/UTC
From the library of: Superior Sewing Machine & Supply LLC

INSTRUCTION MANUAL
DWR-1900-3U/UrC DWR-1900-4U/UTC DWR-1902-2U/UTC
EWR-1902U/UTC DWR-1903U/UTC
INDEX
page no.
1) Features 1
2) Motor pulley diameter 1
3) Supplying / Draining oil 1
4) Threading 2
5) Needle bar alignment and setting needle ••• 3
6) Synchronizing needle and looper 3
7) Clearance of looper and needle 3
8) =ditto= 4
9) Distance from needle to looper 4
10) Feed dog
height 5
11) Change of stitch length 5
12)
Setting needle guard 5
13) Adjustment of looper thread take-up 6
14) Adjustment of rear puller 7
15) Under thread clipper mechanism 8
16) Counter blade 8
17) Alignment of clipping spring
counter blade and stationary blade 9
18) Alignment of looper and counter blade 9
19) Change of counter blade stroke 10
20) Change of drawing thread 10
21) Needle positioning 11
22)
Setting air systems 11
23) Setting table stand 11
g
1. tt m 12
2. is
3. 14
4. immmm 16
5. 17
6 . ^7.' 18
7. 19
8. 20
9. ^ V >0)1 Is 21
10. )^Ufi0iigi5 24
11. 25
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1) Features
This type of machine is equipped with UNDER THREAD CLIPPER
mechanism which facilitates to insert/attach tubular elast
ic onto preclosed garrfient^such as sweat pants, truck shorts
mens under wear and fasionable sporting pants.
numbers of needle numbers of thread ! numbers of looper
CWR-1900-4U/UTC
EWR-1900-3U/UTC
DWR-1902-2U/UrC
IMI-1902U/UTC
CWR-1903U/UTC
Table 1
type of needle in use UY x 128GAS No. 80-100
cylinder circumference 380 m/m 1900-3U/UTC 1900-4U/UTC
440 m/m 1902-2U/UTC 1902U/UTC
1903U/UTC
feed mechanism.
2) Motor pulley diameter
R.P.M.
4000
4500
plain feed with rear puller
push button system to change
feed length.
5
85 m/m
70 m/m
95 m/m
80 m/m
Table
3) Supplying /Draining oil (Fig. 1)
a) Remove oil viewer A and supply oil until oil is being
filled up to the line B of oil gauge C.
The oil level should be checked and kept between line B
and D while machine is in use.
b) Draining oil can be done
with removing screw E.
1
•
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4) Threading
Lil
Fig. 2
B
For easier threading to looper.
Looper can be at THROW-OUT position toward operator
when button B is pushed inwardly. (Fig. 4)
Push looper holder inwardly to operating position before start,
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Needle bar alignment and setting needle
1
fcecZIE)
1 f i !
r~r.
Fig» 5
0
V
(0) ©
6) Synchronizing needle and looper
Turn the handwheel in operating
direction until the point of looper,
nioving to the left (on the back side
of needle), is even with the left side
of the right needle.
Now turn handwheel in the reverse dire
ccion so that meeting point is the
same as preceding location.
To adjust, loosen screw E Fig. 7
SLIGHTLY just enough to retain its
position turn handwheel while eccen
tric F is being held its position,
to attain proper synchronization.
Retighten screw E securely.
7) Clearance of looper and needle
Set the looper and turn handwheel in opera
ting direction until the point of the loo
per, moving to the left(on the back side of
the needle), its clearance is 0-0.1 m/m
(as close as possible without contacting)
To adjust, loosen screw D Fig.7 move looper
holder to attain the proper clearance.
Retighten screw D securely.
Align the point of needles
to the center of needle
plate hole. To adjust loosen
screw A Fig. 5.
Set the needle so that strait
groove is located perfectly
toward operator, shown as
Fig. 6
1
For Proper SYNCHRONIZATION of
Looper ^ Needle
these two Dimensions will be the same
Looper
BEHIND
Needle
in
OPERATING
Direction
Looper in
FRONT of
Needle
in
reverse
Direc tier
flR- 7
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8) Clearance of needle and looper
RIGHT Needle and Looper
as seen from the
LEFT END
of the machine \ \
SCARF \ Jit
9) Distance from needle to looper
Set the looper so that the distance
between the point of looper to the
right side of the needle is 4.5 m/m
when the looper is at its farthest
right end.
To adjust loosen Left hand nut A
and Right hand nut B then turn
Connecting Rod C
Retighten Nut A and B securely.
Fig. 8
RIGHT Needle and Loope
as seen from the
FRONT of the machine
Center Line
4.5 m/m
Looper
at its farthest
position to RIGHT
Right Hand Nut B
Connecting Rod C
Left
Hand Nut A
Fig. 9
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10) Feed dog height
..L
"f—
When the needle bar is at the top
of its stroke, the height of peak of
teeth from the surface of the nee
dle plate should be 1.0-1.2 m/m.
To adjust, loosen screw A move feed
dog vertically to attain its proper
height.
Recighten screw A securely.
1-1.2m/m
11) Change of stitch length
=CAUTION= Readjust needle guard whenever
stitch length is changed.
Fig. 10
Fig. 11
Push button A and hold its
position and turn handwheel
slowly until button is fur
ther in and locking main
shaft.
Turn handwheel counterclock
to increase stitch length,
Turn clockwise acts the
the reverse.
Release button A as it spring
back for operational position.
12) Setting needle guard
Set the needle guard horizontally
so that it barely contacts the nee
dle when at its extreme forward pos
ition.
It should be set vertically as low as
possible, yet have its top of guarding
surface is 1.0 m/m higher than the poi
nt of the needle, when the point of loo-
per meets needle on its wav nf IpftT^arH /per meets needle on its way of leftward
motion.
To adjust, loosen screw A to attain
proper position.
Retighten screw A securely.
Fig- 12
1 m/m
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13) Adjustment of looper thread take-up
a) Set the looper thread retainer E so that the distance
from its underside to the surface of needle plate is
6-7 m/m.
To adjust, loosen screw G move thread retainer E
vertically to attain its
height.
Retighten screw G.
b) Setting looper thread take-up eyelet
Proper location of thread take-
up eyelet D should be vertica
lly in line with the center of
main shaft.
Loosen set screw A move eyelet to at
tain its position.
Retighten set screw A securely.
c) Adjsutment of take-up cam
The looper thread should begin to be released
when the blade of looper and the point of
the needle are at horizontally the same hei
ght, in its motion toward right.
To adjust, loosen screw C SLIGHTLY but rigid
enough to retain its position, move take-
up cam B to attain proper position.
Retighten screw C securely.
13
Fig. 14
6
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14) Adjustment of rear puller
a) Synchronization to needle bar
In upward motion of needle bar and
the point of needle is located within
the thickness of presser foot(1.5 m/m
higher than surface of needle plate.),
puller should start to be effective,
Loosen screw A and secure the location
of eccentric.
Tighten screw A after adjustment is
done.
b) Tlie amount of travel of the puller
Feed length and the amount of travel of
the puller normally be maintained the same.
To adjust this, loosen nut C, move ball
joint assembly inwardly(toward upper shaft)
in connecting lever A to acquire more feed
action, outwardly acts the reverse.
Retighten nut C.
c) Fine adjustment of travel of the puller
To adjust this, loosen screw C move puller
driving lever Btoward operator to acquire more
feeding action, outwardly acts reverse.
Retighten screw C.
Fis» 15
Fig. 16
-
Fig. 17
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15) UNDER THREAD CLIPPER MECHANISM
2
34
Fig. 18
16) Counter blade
Check every corner of blade.
Carefully remove burr as sharp point cuts thread
before looper thread is being clipped.
^ X
Fig. 19
8
12 11
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