UnionSpecial FS322 Quick start guide

•
Finest Quality
2-3 NEEDLE FLAT BED COVERSEAM MACHINE
FS300 SERIES
2-3 NEEDLE CYLINDER BED COVERSEAM MACHINE
CS100 SERIES
ENGINEER'S MANUAL
EN9424
REV. 03/19/99
From the library of: Superior Sewing Machine & Supply LLC

•
PREFACE
This Engineer's Manual is written tor the technical personnel who are responsible for the service and maintenance of
the machine.
This manual describes"Standard Adjustment", "Adjustment Proceduresft,
~Results of lmproperAdjustment~, and other
important information which are
not covered by the Instruction Manual.
It
is advisable to use the relevant Instruction Manual and Parts List together with this Engineer's Manual when carrying
out the maintenance oi these machines.
This manual gives the "Standardadjustment" on theformer page under which the mostbasic adjustment value and on
the latter page
the "Results of improperadjustment" under which errors and troubles arise.
From the library of: Superior Sewing Machine & Supply LLC

CONTENTS
1. SPECIFICATIONS ...•.............•••......•....•.•.•••..........•..........•...••.•••......••••.•••••••••••••••••••••.•••••••••••.••••.•••••••••••••••..•••••. 4
2.
MOTOR PULLEY AND BELT .••••••••.••...•.•••••.•••..........•..•.••.......• ;.............................................................................. 5
3. MODEL NUMBERING SYSTEM ............................................................................................................................6
4.
STANDARD ADJUSTMENT .•••••••...••••••.....••..•••••••••••••.••••...••.•••....•.•••....•.........••..•..........•.•....••••••......•.•...•....•......• 10
{l)FS300 ................................................................................................................................................................................................... 10
1) NEEDlE FEED TIMING ....................................................................................................................................................................... 10
2)ADJUSTING THE TIMING RELATION BETWEEN tHE NEEDLE BAR AND LOOPER (SYNCHRONIZATION) .................•.••.................••.... 10
2)'SVNCHRONIZATJON ......................................................................................................................................................................... 12
3) RETURNING AMOUNT OF THE LOOPER ............................................................................................................................................ 14
4)HEIGHTOFTHENEEDLEBAR ............................................................................................................................................................ 14
S) Cl£ARANCE BETWEEN THE LOOPER AND NEEDLE .......................................................................................................................... 16
6)ADJUSTINGAMOUNTOFTHELOOPER-AVOID ............................................................................................................................... 16
7) POSmONOFTHENEEDLEGUARD ................................................................................................................................................... 16
8) POSITION OF THE FEED DOG ........................................................................................................................................................... 18
9) SPREADER .........................................................................................................................................................................................20
10) LOOPER THREAD CAM ....................................................................................................................................................................22
II) POSITION OF THE PRESSER BAR .......................................................................................................................................................22
12) POStnON OFTHENEEDLETHREAD TENSION RELEASE (WITHOUT THREAD TRIMMER) ..................................................................... 24
13) POSlJION AND HEIGHT OF THE PRESSER FOOT ...............................................................................................................................24
14) POSinONOFTHETHREADGUIDE .................................................................................................................................................... 24
<2>CS100 .................................................................................................................................................................................................. 28
1) NEEDLE FEED TIMING ....................................................................................................................................................................... 28
2) ADJUSTING THE TIMING OF THE NEEDLE BAR AND LOOPER(SYNCHRONIZATION) .......................................................................28
2) 'SNYCHRONIZING LOOPER AND NEEDLE MOTIONS .......................................................................................................................30
3) RETURNING AMOUNTOF THE LOOPER ................................................................................................................................................ 32
4) HBGHT OF THE NEEDLE BAR ............................................................................................................................................................ 34
5) POSmON OF THE NEEDLE GUARD ...................................................................................................................................................34
6) CLEARANCE BETWEEN THE LOOPER AND NEEDLE .......................................................................................................................... 36
7) ADJUSDNG AMOUNT OF THE LOOPER-AVOID ............................................................................................................:.................. 36
8) POSmON OF THE FEED DOG ........................................................................................................................................................... 38
9) SPREADER .........................................................................................................................................................................................40
10) LOOPERTHREADCAM .................................................................................................................................................................... 42
11) LOOPER THREAD WRAP-UP PREVENTING CAM ..............................................................................................................................42
12) POSITION OF THE PRESSER BAR .......................................................................................................................................................44
13) POSITION OF THE NEEDLE THREAD TENSION RELEASE (WITHOUT THREAD TRIMMER) .....................................................................44
14) POSITION AND HEIGHT OF THE PRESSER FOOT ............................................................................................................................... 44
15) POSITION OF THE THREAD GUIDE .................................................................................................................................................... 46
4. OlHER PRECAUTIONS ......................................................................................................................................47
(1) POINTS TO WHICH LOCKTTTE IS APPLIED ............................................................................................................................................. 47
5. TROUBLES AND CORRECTIVE MEASURES .......................................................................................................49
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3
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1. SPECIFICATIONS
FS300 Series FS322 I FS322 I FS332 I FS332
Sewing speed ~
With Puller 6000 R.P .M. 6,500 S.P.M. (Max) left
or right hand undertrimmer 5500
Stitch length
1.6to 2.8 mm
No. of needle 2 3 2 I 3
Needle gauge 3.2, 4.0 5.6, 6.4, 4.8 3.2, 4.0 I 4.8, 5.6, 6.4
Top covering Without
With
Oiff. feed ratio Gathering stitch 1 :1.5
Stretching stitch 1 :0.6
Needle UY128GBS#65/025 to 90/036
Presserfoot lift
B.Omm
Lubricating oil UNION SPECIAL Designated oil (Part No. 28604R)
CS1 00 Series CS122 I CS122 I CS132 I CS132
Sewing speed
~
With Puller 6000 R.P.M. 6,500 S.P.M. {Max) Undertrimmer 5500 R.P.M.
Stitch lenQth 1.6to3.2mm
No. of needle 2 3 2 3
Needle gauge 3.2, 4.0, 4.8 5.6, 6.4 3.2, 4.0, 4.8 5.6, 6.4
Top covering Without With
Diff. feed ratio Gathering stitch 1
:1.5 Stretching stitch 1:0.6
Needle UY12tGJS #55/022 to#90/036
Presserfoot lift B.Omm
Lubricatina oil UNION SPECIAL Designated oii(PM No. 28604R)
'* Depending on Devices
•
4
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2. MOTOR PULLEY AND BELT
FS300 Series
50 Hz .
so Hz
Motor pulley V belt (inch) Motor pulley
V belt (inch)
Sewing speed {s.p.m.) Fully-
Semi-
Fully- Semi-
outer dia. (mm)
s!bmerged submerged
outerdia. (mm) submerged submerged
type type type type
6,500 140 35 120 35
6,000 125 I 35 105
35
5,500 110 35 90 34
5,000 100 34 85 34
4,500 90 34 75 34
4,000
80 34 70 34
3,500 70 34 60 33
1) Use a UNION SPECIAL clutch motor {400W).
2) Use an M type V belt.
3) The table shows the sewing speeds obtained by the use of motor pulleys with different diameters and V belts
with different lengths.
4) Note that the effective diameter
of the pulley of the machine head i~ 54mn
CS100
Series
50 Hz
60Hz
Motor pulley v belt (inch) Motor pulley Vbell
(inch)
Sewing speed (s.p.m.) Fully- Semi- . Fully- Semi-
outer dia. (mm) submerged
submerged
outer dia. (mm)
subrre'lJE'f
submerged
type type type type
6,500 145 43 40 120 41
38
6,000 135 I 43 40 110 41
38
5,500 120 I 41 38 100 41
38
5,000 110 I 41
38 90 39 37
4,500 95
I
41
38 80 39 37
I
4.000
85 39 37 70 39 37
3,500 75 39 37 60 38
35
1) Use a UNION SPECIAL clutch motor (400W).
2) Use an M type V belt.
3) The table shows the sewing speeds obtained by the use of motor pulleys with different diametersand V belts
with different lengths.
4) Note that the effective diameter of the pulley
of the machine head is 57.5 mm.
5
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3. MODEL NUMBERING SYSTEM
CS100 SERIES ORDERING INFORMATION
Stitch type Sub-class Number of needles Needle spacing Devices
2 = Bot!om coverslitch (describes typical application) 2 "' Two needle machine 32"' 3.2 mm CC' = Chain cutter
3 =Top & bottom coverstitch
c· = Col!arette 3 "' Three needle machine 40=4.0mm
MD' =Metering device
E' =Elastic 48 =4.8 mm TC' "'Tape culler
Basic frame style
H": Hemming
56"' 5.6 mm
TF' = Binding feed device
CS = Cylinder bed
K' = Coverseam 60=6.0mm UT" = Thread trimmer
FS =Flat bed L•
=lap seam 64 =6.4 mm '1-9 =Variety or devices
U' =Universal
'00·99 " Variety ol sub-class
~
l I
I I I
FS332C01-3D56/TC4/ I
l
Generation Feed type Stllch tongue
1 =First 2 = Dlflerential Represents
the shape of the throat plate
2 =Second 5=Differential &puller
stitc-h tongue.
3=Third A= For short stitch length A
c;:=-
B= For medium stitc-h length
Bt:='"
C = For long stitch length c c::::7'"
0 =
For all stitch lengths, collaretle,
D='"
coverseam & elastic applications
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CS100 SERIES ORDERING INFORMATION
SUtch type Sob-class
Number of needles Needle
spacing Devices
2 =Bottom coverstitch (describes typical application) 2 =Two needle machine 32"' 3.2 mm cc· "' Chain culler
3 =Top & boHom coverstitch
C' = Co1larette 3 = Three needle machine 40= 4.0 mm
MD'= Metering device
E' =Elastic
48·, 4.8 mm TC'
=Tape culler
Basic frame style
H' =Hemming 56= 5.6 mm TF' = Binding feed device
CS = Cylinder bed
K' =Coverseam 60=6.0mm UT" = Thread trimmer
FS =Flat bed
L' =Lap seam 64 = 6.4 mm
'1·9 = Variety of devices
U' =Universal
'00-99 =Variety
or sub-class .
~I
I
I I I I l I
CS132H01-2C32/UT2/ I
Generation Feed type Stitch
tongue
1 =First 2 = Differential Represents the shape
of the throat plate
2 =Second 5 =Differential & puller stitch tongue.
3 =Third A "' Forshort slilch length
A~
8 "' For medium stitch length
Be?"
C "" For long stitch length c
=""
D = For all stitch lengths, collarelle, D
t:::7
coverseam & elastic applications
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FS300 Series
Code Specification Description of Sub-Class
C01 For Cellarette Basic style
E12 Forelastic tape attaching Right hand fabric under trimmer and metering device (Upperside)
E41 For elastic taoe attaching Elastictape attaching with puller and metering device (Lower side) (with endless rubber)
H01 For hemming Basic style with hem guide
L01 For lap seam Basic style
L21 For l_ap_ seam For the top sleeve of knit fabric
C$100 Series
Code Soecification Description of Sub-Class
E11 For Elastic tape attaching Right hand fabric under trimmer, (Preclosed Elastic)
E12 For elastic tape attaching Fabric undertrimmer, and metering device (Upper side)
H01 ForHemming Basic style with hem guide -
H11 ForHemming With cloth puller
H21 For Hemming Lett hand fabric under trimmer
K01 Covering With standard fixed seam guide, light weightfabric
K02 Covering With adjustable seam guide for medium to heavy-weightfabrics
K11 Coverseaming With special fold over seam guide
•
8
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Under-bed thread trimming device
Electromagnetic type Pneumatic type
Top Needle Needle Top
Thread
Needle
covering
Thread
•~o •~o
Code
For use on model
thread Auto-lifter
_,
wiper
covering •
Auto-lifter
trimmer
wiper
thread
trimmer
(Mecha- (Pneu-
thread
trimmer
nieal) matie)
trimmer
UT1 CS122 0 0 0
UT2
C$132
0 0 0
UT3 CS122 0 0 0
UT4 CS122 0 0 0
UTS
C$132
0 0 0
UT10 FS322 0 0 0
UT11 FS332 0 0 0
UT12 FS322 0 0
UT13
F$332
0 0 0
Elastic tape metering device
Code Description For use on model
MD1
Metering device (upper side) Electric single stage FS322, FS332, CS122,
C$132
MD2 Metering device (upper side) Electric
two stage F$322,
F$332, CS122, CS13~
MD3 Metering device (lower side) Electric single stage FS322, FS332, C$122, CS132
MD4 Metering device (lower side) Electric
two stage FS322, FS332, C$122,
C$132
Automatictape feeding device
Code I Description For use on model
TF1 Automatic tape feeding device (upper side)
For MD1, MD2
TF2 Automatic tape feeding device (lower side)
ForMD3, M04
Under-bed thread trimming device
• Code Description
For use on model
CC1
Pneumatic type chain-off thread cutter l Mounted horizontal venturi suction
FS322,FS332
Cloth puller
Code Description For use on model
PL1
Cloth puller FS322, FS332, CS122, CS132 >
9
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4. STANDARD ADJUSTMENT
(1) FS300
Standard Adjustment
1) Needle feed timing .
First screw (A) in operating direction on double eccentric (B) offeed drive assembly must be
straight up, when the needle bar is at bottom of stroke.
r--
I~
i\
B
1--B
' /
A-
il
~
f--A
-
1---
0
2) Adjusting the timing relation between the needle bar and looper
(synchronization): Without gauges
When the blade point of the looper moves to the left in the rear of the needle and to th_e right in
front of the needle, align the upper end of the eyelet ofthe left needle with the lower face of the
looper
so that the distance between A and B. the side of the left needle to the blade point of the
looper, should be equal.
4J'
A=B
A B
Vca=
/ca:::
'¢:J Mov:e to the left
¢Move to the right
I
Looper
v Looper
tl-- Left needle
.
Allgn~L
Left needle
.0.
10
.
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•
Adjustment Procedures
Remove top cover, oil reservoir cover, gasket and cloth plate.
Loosen screws (C) of sprocket (D).
• Rotate lower main shaft in operating direction clockwise, until the
first screw (A) on double eccentric (B) is straight up.
• Holding pulley to prevent it from turning, rotate handwheel of upper
main shaft until needles are at top of their stroke.
• Torque screw (C) to 45-46 in. lbs. (5.2-5.4Nm).
• Replace top cover, oil resevoir cover, gasket and cloth plate.
Note: Earlier machines have (4) screws.
• Turn handwheel in operating direction until bottom of looper is
even with tap of needle eye. Note dimension (A)
Continue turning handwheel in operating direction until bottom of
looper is even w~h top of needle sye when looper is in front of
needle. Note dimension (8)
• If (A) is greaterthan (8)
-loosen (C) on sprocket (D).
-Turn sprocket (D) in operating direction
-Tighten
screws (C)
-Repeat above two steps until (A)"' (8)
•
If (A) less than (B)
-loosen screws (C) on sprocket (D)
-Turn sprocket (D) in reverse direction
-Tighten screws
(C)
-Repeat sbove two s1eps until (A)"' (B)
Results of ImproperAdjustment
• Needle breakage
• Looper missing needle thread
• If the timing is not correct, skip st~ching
may occur.
11
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FS300
Standard Adjustment
2)' Synchronization
• Rotate handwheel in operating direction until pin in looper holdercontacts gauge plate.
• Reposition needle bar as required to set pointer of indicator gauge at "0~.
• Rotate handwheel in reverse direction until pin in looper holderagain makes contact with gauge plate.
• A variation of (1) graduation on scale is permissible.
•
12
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Adjustment Procedures
o Rotate handwheel in operating direction until pin (9contacts
gauge plate e.
o Loosen screw (!) in needle bar connection & position needle
bar 8 as required to set pointer 0 of indicator gauge 0 at
~a~ tighten screw (!)lightly.
o Rotate handwheel in reverse direction until pin 8 makes
contact with gauge plate 0 .
Note reading on gauge. A variation of (1) graduation on scale
is permissible.
To adjust:
o Loosen screws 0
on looper drive sprocket €t .
o If reading is above ~a" tum sprocket towards operator.
o If reading is below "0" tum sprocket away from operator.
o snug screws 0 .
o Continue to check & adjust in both operating & reverse·
directions until pointer 0 of indicator gauge 4D comes within
(1) graduation
on scale when turning handwheel in either
direction.
o Tighten screws
0.
o Torque needle barscrew (9 to 20 inllbs.
CD
Results of Improper Adjustment
o Skipped stitches
o Improperchaining
13
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FS300
Standard Adjustment
3) Returning amount of the looper
When the looper is in the extreme right position, the distance between the blade point of the looperand the
center of the right needle is 4.4 ± 0.1 mm.
} /Right needle
V Looper
c=
I
-+-+--- 4.4 ± 0.1 mm
4) Height of the needle bar
When the looper moves to the left and the blade point of the looper comes out from the leftside of the left
needle by 0.7 to 1.0 mm, the lower face of the looper aligns with the upper end
of the eyelet of the left
needle.
c
-I"'-J-0.7to 1.0 mm
I/ Looper
~of---
Align/
Lett needle
14
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Adjustment Procedures
o Loosen the looper base setscrew 0 and adjust the returning
amount of the
lOoper.
(Use a 5/32 inch hexagonal wrench.)
o Loosen the needle barholder screw 0 and adjust the height
of the needle bar.
(Caution)
After the adjustment, check that the direction of
the needle clamp is correct and the respective
needlesenter the center of the holes of the throat
plate.
@ 0
\\
0
0
mill
0
0
0 0
Results
of Improper Adjustment
o If the returning amount is large,
skipping stitch and tangling stitch
may occur and the range of the
thickness ofthe cloth to be sewn is
reduced.
o If the returning amount is small,
skipping stitchand tangling stitch
may
occur.
o If the distance of C is large, skip
stitching and tangling stitch may
occur.
o If the distance of C is small, skip
stitching and tangling stitch may
occur.
o
If defective stitch occurs with the
wooly nylon thread, make the
distance Cas small as possible.
15
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FS300
Standard Adjustment
5) Clearancebetween the looper and needle
Clearance between the blade point of the looper and the grooves of the rightlleft needles is 0 to 0.05 mm.
(Clearance
of the middle needle becomes largera liHie.)
Otoo.os mm
VRight needle
Looper
j
j ===;~/~::::-;;::::~;. ;;;;
Oto0.05mm4
0
Needle
Top end
of looper
6) Adjusting amount of the looper-avoid
When the needle descends, the top point of the needle touches the back of the looper at the position of 213
from the upper side of the looper.
Needle desce:tlr ~ i >13
Back of looper t 113
7) Position of the needle guard
<D Rear needle guard
o The height of the rear needle guard is in the position that the rear needle guard is 1.2 mm above the top
of the
needle when the looper moves to the left as shown in the figure.
o The longitudinal position
and inclination of the rear needle guard are in the position that when the right
side of the respective needles comes to the blade top
of the looper, the top of the needle slightlytouches
the rear
needle guard.
<?
~ ~ !.:.; ==~t.2mm
guard Slightly touch
®Moving needle guard
16
o When the looper advances, the clearance between the needle and the moving needle guard is 0.05 to
0.13mm.
==J~;;:~=t 0.05to0.13mm
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•
Adjustment Procedures
o Loosen the looper base setscrew 0 and adjust by moving
the looperbase back and forth.
o Loosen the two screws G and
adjust by rotating the eccentric pin
8.
0 Amount of the avoid increases in
the direction of+.
o Amount of the avoid reduces in the
direction
of-.
(Caution) After the adjustment,
check again the
clearance between the
blade point and the
groove of the needle.
o Loosen the screwO and adjustthe-
height and inclination of the r~ar
needle guard 0. Loosen the screw
G'!> and adjust the longitudinal
position
of the rear needleguard
0.
(Caution) Check that the rear
needle guard does not
break the loop of the
needle thread by
touching the groove of
the needle.
o Loosen the screw Gt and adjustthe
clearance between the moving
needle guard
fD and the needle.
(Caution) Check that the needle is
never caught between
the moving needleguard
and rear needle
guard in
any case.
Results of Improper Adjustment
o If the clearance istoolarge, the loop
ofthe needlethread is not scooped
and the
back of the looper hits
strongly the top point of the needle
which causes the damage
of the
needle
point
o If the clearance is too small,
skipping stitch will·occur due to the
damage
otthe tip of the looper, the
needle breakage, and the large
clearance between the back
ot the
.
looper and the needle.
o Ifthe amount of the avoid is large,
the clearance
of the back of the
looper and the needle becomes
large,
and skipping stitch and
tangling stitch will occur.
o Ifthe amount of the avoid is small,
the needle hits strongly the back of
the looper. Thiscausesthe damage
of the
needle point, the needle
breakage and the damage on the
back
of the looper.
o
If the returning amount is large,
skipping stitch and tangling stitch
occur, and the range of the
thickness of the cloth to be sewn is
reduced.
o If the returning amount is small,
skipping stitch and tangling stitch
occur.
17
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FS300
Standard Adjustment
8} Position of the feed dog
o The clearance of the left/right sides of the feed dog should be equal in the slots of the throat plate.
o
At the maximum travel, the clearance of the main feed dog and differential feed dog is equal to A= A', 8
:8'.
o The height of the teed dog is 1.0 mm at the top of their stroke.
o The tilt of the feed dog is parallel
to the throat plate when the needle baris at the highest position.
1.0mm
•
18
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•
Adjustment Procedures
Open the cover located atthe rear side of the needleentry.
o Adjust the longitudinal position of the main feed dog after
loosening the nut@) and rotating the eccentric nut
ID.
o Adjust the longitudinal position of the differential feed dog
after loosening the nut
Q) and rotating the eccentric nut 0.
o Adjust the inclination of the feed dog afterloosening the screw
4D and rotating theeccentricshaft inside witha slit-screwdriver
through the hole
~.
o Loosen the screw G> and adjust the height of the main feed
dog@).
o Loosen the screw §) and adjust the height of the differentia!
feed dog
@1.
Results of Improper Adjustment
o Ifthe letvright positions of the feed
dog are
incorrect, the left/right sides
and the throat plate will wear out.
o Heating and abnormal noise will be
produced.
o The feed components wiH wear out
early. And, the looseness, bending
and abnormal noise will be
produced.
o If the inclination of the feed dog is
raised toward you, starting of the
workpiece will
be affected.
o If the inclination of the feed dog is
towered toward you, it
may cause
the irregular stitching and
puckering.
o If the position ofthefeed dog is high,
it causes the return feed, skip
stitching and defective chain-off.
o Ifthe main feed dog, differential feed
dogandthroatplatecome in contact
each other, it will cause the
breakage.
o If the position
of the fe:ed dog is low,
the stitch length becomes short
when the sewing is finished.
19
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FS300
Standard Adjustment
9) Spreader
(!)Timing Descend.[!,
Highest point
2.5 ± 0.1 mm c~~~~~g~~~~
.:::0 Return
Just when the needle descends 2.5 mm from the
highest point of the needle bar, the spreader
begins to return from its extreme left position.
®Position of spreader II
5.5 ± 0.1 mm ..,.-JIHI ~
11.5 :± 0.2 mm (10.8 ± 0.2 mm throat
plate for 4.8 mm or
more needle gauge)
Left needle
0.3 to ~j=ii::;:f~i,~o~o'::;:;/
0.5 mm f
@Fixing spreader thread guide
Spreader
Extreme right
~Return
0.4to
\ o.a mm
Top blade should be
between left
side and
middle of the groove.
Show spreader at
extreme
right position
when setting height
®Needle clamp spreader thread guide
Fixing spreader
thread guide
Needle clamp spreader
thread guide
20
@Stroke
•..
Direction o1 cloth feeding fl..
~ l';"'''
, ,,
~~--.--..~ ,,
19± 0.1 mm
o The height is 11.5 ± 0.2 mm (4.0 + 3.2
gauge). (10.8 ± 0.2
mm for4.8 mm,
5.6 mm. and 6.4 mm gauges.
o When the spreader is inthe extreme left position,
the distance between the center of the left needle
and the top blade ofthe spreader is
5.5 ±0.1 mm.
o When the spreader returns to the right, the
clearance betweenthespreaderandthe left needle
is 0.3
to 0.5 mm.
o When the spreader is in
~he extreme right position,
the top blade of the spreader
__ should be between
left side and middle of· the spreader thread guide
groove.
o The height
is 0.4 to0.8 mm from the surface of the
spreader.
o When the needle bar is in the lowest position, the
clearance between the needle clamp spreader
thread guide and the
upper face of the fixing '
spreader thread guide is 4.0 ± 0.5 mm.
o The center of the hole of the thread guide aligns
with the left side of thefixing spreaderthread guide
groove.
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