Technical Manual - Superior Sewing Machine &

•
NEEDLE POSITIONER
Technical Manual
INSTALLATION
INSTRUCTION
SERVICE
TROUBLE SHOOTING
PARTS LIST
TOKYO JUKI INDUSTRIAL CO., LTD.
From the library of: Superior Sewing Machine & Supply LLC
TABLE OF CONTENTS
Subject
Page
1 INTRODUCTION
1
2 FEATURES
3 MODEL AND TYPES
4 INSTALLATION
1
2
3
5
6
7
8
9
ELECTRICAL CONNECTIONS
OPERATION
MAINTENANCE
HOW TO CHECK THE DRIVE UNIT
DIMENSION
10 PARTS LIST
4
5
8
13
15
16
From the library of: Superior Sewing Machine & Supply LLC
INTRQWCTION
This needle positioner represents a new concept in needle-positioning motor. This device meets all
requirements for control functions that may be needed in the future. It is controlled by an electronic
circuit which enables the powerful electro-magnetic clutch and brake to increase and decrease the speed
of the sewing machine promptly. Variations of the operational speed are stepless and accomplished by
simply touching the pedal softly.
1-1 Component of the needle positioner
This electronic needle positioner consists of a squirrel-cage induction motor, an electro-magnetic
clutch and brake, and a control box and synchronizer. All assemblies are designed in a modular
system and are easily replaced.
ELECTRO-MAGNETIC
CLUTCH AND BRAKE
INDUCTION
MOTOR
•
^
^CONTROL BOX
1-2 Principle of operation
The electro-magnetic clutch and brake consists of the clutch coil and brake coil assemblies, the
output shaft, the clutch end cover, and two moving discs which are slidable on the output shaft, (fig.
2) When the clutch coil is energized by operating the pedal, the moving disc is engaged with the
friction disc fixed on the flywheel. And then the rotation is transferred to the output shaft. When the
brake coil is energized, the moving disc is engaged \(t/ith the friction disc fixed on the clutch end
cover, And it stops the rotating output shaft.
CLUTCH COIL
BRAKE COIL
FRICTION DISC
MOVING DISC.
FRICTION DISC
FLY WHEEL
CLUTCH END COVER
MOTOR SHAFT
MOVING DISC,
OUTPUT SHAFT
FEATURES
PEDAL OPERATION CONTROLS FUNCTIONAL SPEED
Pedal operation alters the speed of the sewing machine, and maximum speed of the output shaft
can be easily adjusted. As a result, straight, curved and zig-zag sewing can be smoothly
accomplish^, therefore, improving the efficiency and simplicity of operation.
HAND WHEEL FLEXIBILITY
The hand wheel can be freely turned to any position by hand even when the sewing machine is
stopped. This is a great convenience, should the thread become entangled,
TIRELESS OPERATION
Only modest foot pressure is required to operate the pedal optimally. Strength of the pedal
fowarding can be adjusted by changing the hook-up position of the spring. Therefore, each operator
can conveniently adjust the pedal to his or her desired foot pressure.
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AUTOMATED QUALITY CONTROL CIRCUITRY
Long operational life and extraordinarily high reliability are characteristic of the most advanced
analog and digital semi-conductor elements. Because all control circuitry is controlled by electric
signals, programmed operation and control can be systematized. This enables automaticallycontrolled operation of a number of sewing machines,
NEEDLE POSITIONING AND STOPPING ACCURACY
Specially designed electro-magnetic clutch and brake ensure very precise needle positioning and
stopping accuracy, which helps prevent needle breakage.
ABNORMAL OPERATION
(a) Abnormal high speed operation results thread-breakage. Should this occur, the pedal will not
function because it is interlocked by an electric signal which safeguards against irregular pedal
operation.
(b) in case the V-belt is off and the pedal is pressed accidentally, a protection circuit disengages the
clutch automatically.
{c)When the manual back tack switch Is accidentally pressed while the sewing machine is stopped,
the protection circuit disconnects the back tack solenoid in 12 seconds to protect the solenoid
from burning.
These factors enhance the safety of the unit greatly.
JAMMING OR FREEZING PREVENTION
A special protection circuit is engaged when the machine freezes, automatically disengaging the
clutch, and therefore, protecting the motor from burning out.
CLUTCH AND BRAKE AIR GAP ADJUSTMENT
Should the clutch and brake need operational adjustment, the air gap space can be easily altered
with a turn of the adjustment screw.
'or': , V
MODEL AND TYPES
^'2
3-1 MODEL
Phase
Model
Motor
Control box
EPS1E-JTG
ENC3E-JTG
EPS1E-JTH
ENAP-DS
ENC3E-JTH
EPS1E-JTK
ENC3E-JTK
EPS1E-JTL
ENC3E-JTL
EPS3E-JTG
ENC3E-JTG
EPS3E-JTH
Synchronizer
ENAM-DS
ENS2-02
ENC3E-JTH
EPS3E-JTK
ENC3E-JTK
EPS3E.JTL
ENC3E-JTL
ENS2-02
*Models of 2 positioning function are also available EPS1B-JA2 (1 phase), EPS3B-JA2 (3 phase)
3-2 MOTOR
Phase
ENAP-DS
Voltage
Frequency
115V
ENAM-DS
Output
Pole
Rating
60Hz
3/4HP
2P
Cont.
60Hz
3/4HP
2P
Cont.
3-3 CONTROL BOX
Function
ENC3E-JTG
Needle
Thread
Thread
Presser
Automatic
Positioning
Trimming
Wiping
Foot Lifting
Back Tacking
O
O
ENC3E-JTH
ENC3E-JTK
ENC3E-JTL
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3-4 SYNCHRONIZER
Type
Coupling to the sewing machine
Performance
ENS2-02
Flange type
Needle down and up position signal, and
tachogenerator
3-5 AVAILABLE MODELS
MACHINE SPEED (MAX)
MODEL
SEWING MACHINE
EPS1E-JTG
DDL-555-4-3
5000 RPM
EPS1E-JTH
DDL-555H-4-1
4000 RPM
EPS3E-JTG
DDL-555H-4-3
4000 RPM
EPS3E-JTH
DLD-432-4-1
4500 RPM
DLN-415-4-1
5000 RPM
DLU-45D-4-1
4000 RPM
EPS1E-JTK
DDL-555-4-3B
5000 RPM
EPS1E-JTL
DDL-555H-4-3B
4000 RPM
EPS3E-JTK
DLN-415-4-1B
5000 RPM
EPS3E-JTL
DLD-432-4-3B
4500 RPM
DLU-450-4-1B
4000 RPM
All motors are supplied with the pulley for 5000 RPM.
If your machine speed is not 5000 RPM {refer above table), please ask the proper pulley to your
supplier.
EPS1B-JA2, EPS3B-JA2 can be applicable to any machine.
INSTALLATIQ
4-1 Installation of motor to sewing machine table
1) Drill three holes in the sewing machine table. (See fig. 3)
ftg. 3 unit mm (Inches)
3—^9
(3—0.35dia.)
Moior center line
Beit hole
machine
center line
2) Install the motor beneath the sewing machine table, observing the following precautions:
A. Don't drop or subject It to shock.
B. The motor should be mounted so that the drive pulleys of the motor and the sewing
machine are properly alined.
C. The V-belt connecting the motor to the sewing machine should be tensioned properly. It
should be possible to pull a correctly tensioned belt together between two fingers within
approximately 2cm (0.80 Inches).
Excessive tension may not only shorten the life of the bearings, but could also affect the
operation of the sewing machine.
Loose tension will'affect the position accuracy.
D. After installing the motor, please make sure that the output shaft can be freely turned by
hand. If not, please adjust the clutch air gap, as instructed in item "7, maintenance,"
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4-2 Installation of synchronizer
Attach the synchronizer-to the handwheel of the sewing machine. (See fig. 4)
ftg. 4
Screw
Handwheel
Synchronizer axle
Synchroniz^^r^^^^^N
Grounding terminal
•Nut
Retaining bolt
Band
Note: The cable extending from the synchronizer should be fixed to the retaining bolt with the band.
The grounding terminal should be fixed by mean of the screw diagramed on the sewing
machine.
TTMCAICONNECTIO
5-1 Diagrams for power supply connections
fig. 5 11 .^.oAriT^
'ii—<t>— QR^
y , 'IB LUE
(
I I
GREEN
Bu>CK
(FACING THE PULLEY)
1^ WHITE
WHITE
TO REVERSE ROTATION
torn.
I n E Di
iLACK
GREEN
DIRECTION OF ROTATION
IMAIN "IyELLOW
LINE
LIME
^ 20W
TO REVERSE ROTATION
INTERCHANGE ANY TWO
^
INTERCHANGE BLUE
RED LEAD
LEADS
LE
t 6V20W
^
Single phase
Three phase
Before making any connections to the power supply, check the nameplate rating to ensure
conformance to the line voltage.
5-2 Change for the direction of rotation
If the sewing machine is operated in the reverse direction, be sure to turn off the motor and change
the wiring as indicated on the connection diagram.
5-3 Wiring connections of the sewing machine solenoids.
The solenoid connectors of the sewing machine shall be connected to their corresponding
connectors on the connector panel as indicated on the following drawings.
fig. 6
ENC3E-JTG
POWER SUPPLY
1
WIPER
fig. 8
CLUTCH/BRAKE
TRIMMER
ENC3E-JTK
POWER SUPPLY
1
1
SYNCHRONIZER
WIPER
CLUTCH/BRAKE
TRIMMER
BACK TACKER
SYNCHRONIZER
fig. 7
ENC3E-JTH
POWER SUPPLY
1
fig. 9
CLUTCH/BRAKE
FOOT LIFTER
1
ENC3E-JTL
POWER SUPPLY
1
CLUTCH/BRAKE
FOOT LIFTER
1
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5-4 Synchronizer connection
Before starting operation, Insert the synchronizer connector into the corresponding connector on the
connector panel.
5-5 Connection of the lighting fixture
Two black wires are provided for 6 Volt 20 Watt lighting fixture in the end cover of the motor.
Please connect properly when it will be needed.
5-6 Changing the primary taps of the transformer used in 220V control box
The transformer which is located in the control box has the four taps (190v-208v-220v-240v).
At ex-factory, it is used the 220v tap.
Before starting operation, check your power supply and if necessary, change the connection to the
proper terminal.
OPERATION
When the foot pedal of the sewing machine is pressed forward, the pitman rod moves the speed governor
in the control box. The clutch coil is energized by a control system so that the sewing machine can be
operated at the desired speed; depending on the position of the foot pedal.
When the sewing operation is completed and the foot pedal is released to Its neutral position, the brake
coil is energized through the control circuit. By means of the synchronizer, the sewing machine will stop
in the needle down position immediately. By heeling the foot pedal backward, the clutch coil is
reenergized. Therefore, the sewing machine will move into the needle up position at the thread trimming
speed and the thread trimming operation will be performed. After the sewing machine is stopped in the
needle up position, the thread wiping operation is performed once.
fig. 10
Fool pedal
Pressed forward
Pressed backward
Note: (a) The handwheel of the sewing machine can be turned freely when the sewing machine is
not operating.
(b.) When the operator stops the sewing machine in the needle down position, once she turns
the handwheel of the sewing machine manually, the thread trimming and thread wiping
operations cannot be performed even when the foot pedal is heeled backward.
BACK TACKING
JTK and JTL type motors have an automatic back tack operation. The automatic start back tacking
is performed at the beginning of the sewing operation by pressirig the pedal forward. The end back
tacking is performed at the completion of the sewing operation by heeling the pedal backward.
Even when the pedal is released to Its neutral position at the end back tack, the sewing machine is
moved into the needle up position: performing the thread trimming operation after the end back
tacking. The sewing machine then performs the thread wiping operation.
When the pedal is released to its neutral position at the start back tack, the sewing machine will
immediately stop in the needle down position. By heeling the pedal backward during the start back
tack, the sewing machine performs the thread trimming and wiping operation without the end back
tacking.
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1) Back tack patterns
The patterns are selected by changing the BACK TACK SW. located on the connector panel.
BACK TACK SW.
Pattern
START
upper position
Start
back tacking
OFF position
down position
upper position
End
OFF position
back tacking
down position
A—,B B-r---A
fig. 11
A
OFF
.bVbs
START
END
BACK TACK SW.
2) Programming the stitches of back tacking
The switch to program the stitches of back tacking is located on the "L P. C. Board" in the
control box. {fig. 12)
o i=^t=]i=iao
Conirol box
L P. C. Board
'
O
0
Switches to program
the stitches of back tacking
Screws to fix the cover
Back tacking is consisted of two portions, Part A and Part B. (fig. 13)
PART A; forward portion of back tacking
PART B: backward portion of back tacking
The stitches of part A and B can be programmed independently from 0 to 15 by changing the
switch.
Note: Part A Is double only.
The programming should be done by changing the switch as per the following combination table.
Ml m
table 6.2 Combination table
Switches
AI B
SWITCH
Number of stitches
0
1
2
ON
OFF
1
1
OFF
2
2
OFF
4
4
OFF
8
^
OFF OFF
OFF OFF
5
6
BlB
9
10
ON
OFF
OFF
ON
ON
ON
OFF OFF
ON
ON
OFF OFF OFF
OFF OFF
ON
ON
11
12
13
14
OFF
ON
OFF
ON
ON
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Example:
start back tacking is programmed to 3 stitches forward and 4 backward, the end back
tacking is 4 stitches forward and 3 backward.
When the
fig. 15
Switches
Position
T
OFF
B
OFF
4
A
ON
8_
OFF
1
ON
2
ON
OFF
OFF
6-2 FOOT LIFTING
JTH and JTL type motors have a presser foot lifter. The presser foot is lifted by heeling pedal
backward to the intermediate position while the needle is down position. When the pedal is fully
heeled backward, the needle is positioned at the upper position while thread trimming and wiping
operations are performed before lifting the presser foot. The presser foot is kept lifted as long as the
pedal is heeled backward.
fig. 16
Intermediate
Full
6-3 SLOW START AND NUMBER OF NEEDLE POSITIONS
1) Number of needle positions
When the single positioning is. required, open the control box and change the select switch "1"
located on the "L P. C. Board" from "OFF" to "ON" position, (fig. 19)
2) Slow start
When the slow start is required at the beginning of the sewing, open the control box and change
the select switch "3" and "4" located on the "L P. 0. Board" in accordance with the following
combination table, (table 6.3)
- imczzicncn
^
m - — —»
Number of needle position
— L P.O.Board
^
o
•]" "1
o
—^ Slow start
-T
zo
Select switch
table 6.3
Switch Number
3
Number of stiches at slow start
oil
OFF
OFF
OFF
ON
I
I
2
I ~3~
ON
ON
OFF
ON
From the library of: Superior Sewing Machine & Supply LLC
REPAIRS AND ADJUSTMENT
1)
Adjustment of clutch air gap
A) Turn the adjustment screw
ft—
counterclockwise at least two turns,
until It becomes not to turn the output
Clutch
Clutch end
end cover
cover
B) Turn the adjustment screw clockwise
carefully until the rotation becomes
Adjustment screw
tighter. (At this point, clutch air gap is
J
zero and the output shaft is turned
li—
\|
Complete the adjustment by turning
iLJi Ihuuu^^
1l^Tll\ HI llvQ^
W
the adjustment screw 120® clockwise
(8 steps of notches).
C) When the clutch air gap is adjusted,
brake air gap is done accordingly.
2)
1
Replacement of the control box
A) Switch off the motor, remove the pitman rod from the speed control lever.
B) Pull out all connectors and unscrew the four bolts which hold the control box to the motor.
C) Remove the control box from the motor and replace it with the new control box.
3)
Replacement of speed control lever assembly
A) Pull out the connector connected from the speed control lever assembly to another printed circuit
board.
B) Remove the strain relief. (JTK, JTL type)
C) Unscrew five screws which fix the speed control lever assembly to the control box, and remove it
from the control box,
D) Replace it with the new speed control lever assembly.
JTG, JTH type
!
I
JTK, JTL type
Important:
Removal and replacement of circuit boards must be done by qualified service personnel with care
to avoid static electricity damage to "MOS" component.
4)
Replacement of printed circuit board "M" (JTK, JTL type)
A) Pull out all connectors which are
connected to the printed circuit board
B) Remove the four screws which fix the
printed circuit board "M."
C) Replace it with a new printed circuit
board "M."
D) Reinsert securely all connectors.
FT
77
u
screws
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Replacement of printed circuit board "L" (JTK, JTL type)
A) Puli out all connectors which are connected to the printed circuit board "L."
B) Push the nail to free the lock of the nylon spacer, and remove the P, C. Board "L"
C) Relace it with a new printed circuit board "L" and push until the board is snapped completely.
D) Reinsert securely all connectors.
fig. 21
Push here to free the lock
P. C. Board "L"
Nylon spacer
Cover —
6)
Replacement of printed circuit board "C" (JTG, JTH type)
Refer to the Instruction of replacement for the printed circuit board "M."
7)
Replacement of the synchronizer (See fig. 22)
A) Remove the connector from the control box.
B) Unscrew the three screws, and remove the synchronizer from the handwheel of the sewing
machine.
C) Then replace it with a new adjusted synchronizer.
Coution:
With cover removed and power on, the rotation of the synchronizer magnet carrier plate can
cause severe physical injury to hands, arms, etc. Never remove cover or adjust magnet carrier
plates with power on.
Note: If necessary, readjust the needle stop position by turning the magnet carrier plates. Turn the
sewing machine manually into the needle down position. (Make sure that the direction of
rotation is correct!) Remove the cover from the synchronizer, loosen the screw, and turn the
magnet carrier plate; which has the red magnet so that it will be located in the "1" position
on the synchronizer socket. Then turn the sewing machine to the needle up position and
adjust the magnet carrier plate; which has the yellow magnet so that the plate will be located
in the "2" position on the synchronizer socket.
To make a fine adjustment;
A) Pull out the solenoid connectors of the sewing machine from the control box.
B) Operate the sewing machine.
C) Press the foot pedal forward and release.
D) Make sure the sewing machine is in the needle down position.
E) Correct to the required needle position by adjusting the red magnet carrier plate.
F) Heel the foot pedal backward. (Needle stops in the up position.)
G) Correct to the required position by adjusting the yellow magnet carrier plate.
H) Tighten the screw and install the synchronizer cover.
I) Finally reinsert the solenoid connectors of the sewing machine to the control box.
fig. 22
Magnet carrier plate (red)
Magnet carrier plate (yellow)
Synctironlzer socket
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Use of special lining application material
For longer lining life, it is important that the lining should be coated at least once a half year. Also
use the material if noise is heard in the clutch and brake.
Note: Don't use any application material other than this for the PANA-STOP E. This tube contains
enough for 4 applications, and the material should be used accordingly.
How to use;
A) Motor disassembly (fig. 23)
a) Switch off the motor, and remove the pulley cover and V-belt.
b) Pull out the three-pole connector from the control box.
c) Remove the clutch end cover by unscrewing the three bolts.
d) Remove the spline cover and the spring.
e) Remove the clutch disc from the output shaft, and remove the nylon ring together with the
brake disc.
Note: Be careful not to drop otherwise damage the movable plates, nor to scratch or scar the
lining surfaces.
Don't permit dust to adhere to the lining surfaces of the moving discs while they are
disassembled.
fig. 23
Clutch end cover
Nylon ring
(Clutch)
Flywheel
Bearing housing
Moving disc
\- Bolt
-&J
Motor bracket
Three-pole
connector
8) Cleaning of moving discs and motor interior
Clean away any cotton waste or other dirt adhered to the moving discs, clutch end cover,
flywheel and each ventilation channel of the motor bracket. Use a soft, dry cloth to clean away
any cotton waste adhered to the lining surfaces.
C) Application to lining surfaces
a) Squeeze an amount equal to about 2 match heads from the tube and apply to the lining
surfaces of either the clutch or brake in 8 places. (See fig. 24)
Note: Be careful not to apply too much, because this may cause a malfunction of stopping
precision, or the motor might not operate even if power Is turned on.
b) Firmly press the uncoated lining surface against the coated surface. (See fig. 25)
c) Rotate the moving discs against each other. (See fig. 26)
d) Clean away any excessive material which comes out between the lining surfaces. (See fig. 27)
fig. 25
fig. 24
KooJ
fig. 26
fig. 27
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D)Application to clutch shaft
Clean away any cotton waste adhered to the cogs
of the clutch shaft, and apply the material evenly.
E) Motor assembly
Assemble the motor In the opposite order of disassembly.
F) Break-in operation
Perform a break-in operation soon after application of material to the lining surfaces.
a) Switch on the motor.
b) After the motor is operating normally, perform the break-In operation by operating the pedal
more than 100 times.
Note: If too much material Is applied to the lining surfaces, the motor might not operate even if
power is turned on. If this happens, remove excessive material from the friction disc surfaces.
9)
Cleaning up the filter
When the filter is filled up with the cotton waste, the motor will be heated up. This may
shorten the service life of the motor and reduce efficiency.
Cleaning up:
A) Remove the filter by pulling the part A shown in
0) Replace the filter.
29
Clutch end ccwer;
(a)
m\7(
/
10) Adjustment of the speed control lever strength
The pull strength of the speed control lever will be changed by relocating the hooked position of
the spring. When the pull strength is adjusted too lighter, positioning accuracy will be Impaired.
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Adjustment of the maximum speed and back tacking speed
The potentiometers to adjust the speeds are located on the front of the control box.
a) f^aximum speed (JIG, JTH, JTK and JTL)
The maximum speed is adjustable by the potentiometer "MAX." from the synchronous speed to
lower than 2000RPM. At ex-factory, it is adjusted the highest position.
The lower speed is convenient for the training the beginner. However, the longer use of the lower
speed will shorten the life of the clutch and brake linings.
b) Back tacking speed (JTK and JTL)
The start back tacking speed is linearly variable by pressing the pedal forward from 180RPM to
upper limit which is adjusted 2000RPM at ex-factory.The speed of backward portion of the end
back tacking is 2000RPM and the speed of forward portion of the end back tacking is 1500RPM.
The upper limit of the start back tacking speed and the speed of backward portion of the end
back tacking should be adjusted by the potentiometer "B.T." from 1000RPM to 2500RPM.
fig. 31
CAUTION
CAUTION
JTG, JTH.
JTK. JTL.
HOW TO CHECK THE DRIVE UNITt
In case the trouble, proceed as follows:
1) Switch off the motor.
2) Pull out all connectors, then reinsert them.
TROUBLESHOOTING
PROBLEM
Motor does not
start when turning
main switch on.
PROBABLE CAUSE
CORRECTIVE ACTION
Power supply cord (plug, protection
switch) not properly connected.
Correct connection in accordance
Power supply cord (plug, cord,
protection switch) defective.
Replace defective parts.
Motor winding defective.
Replace motor or have motor
repaired by manufacturer.
Plug for synchronizer, clutch, or
clutch cord defective: connection
in plug for clutch and brake
Replace defective parts or
repair connections respectively.
with Instructions.
interruptedPlug for synchronizer or clutch and
Plug in.
Motor runs, but
when activating
sewing machine
pedal, the
Power supply cord (plug, cord)
for control box defective, or
machine does not
start.
Fuse in control box open.
Replace fuse.
Clutch air gap too
narrow, or after a long time of
use, clutch lining worn down or
Adjust clutch air gap in acc
defective.
brake discs.
Control box defective.
Replace control box.
brake not inserted.
Replace defective parts,
or plug in.
plug not inserted.
ordance with Instructions.
If necessary replace clutch and
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PROBABLE CAUSE
Motor decreases
speed
considerably or
stops entirely.
Motor overheats.
Motor overheats.
CORRECTIVE ACTION
Voltage too low.
Have power supply checked,
Machine or devices (e.g. thread
trimmer) binding or seized.
Repair machine or devices.
Power rating of motor too low
for particular operation.
Exchange motor for another with
higher power rating.
Control box defective.
Replace control box.
Air channels within motor and
Clean air channels in motor and
clutch filled with lint.
clutch.
Machine or devices (e.g. thread
trimmer) binding or seized.
Clutch air gap too narrow.
Repair machine or devices.
Adjust clutch air gap in
accordance with Instructions.
Clutch and/or brake coil
Replace defective parts.
defective.
Motor winding defective.
Control box defective.
Replace motor.
Replace control box.
Two phase operation for three
Check the power supply.
phase motor.
Once main switch
turned on
machine operates
without pedal
being actuated.
Stop is only
possible by
switching off.
Machine pedal is jammed or
actuates by own weight.
Clutch air gap too narrow.
Replace or repair pedal.
Adjust clutch air gap in
accordance with Instructions.
Control box defective.
Replace control box.
Machine runs at
first actuation at
Cord of synchronizer torn off,
connection in synchronizer or
Repair cord or connections.
full speed. Stop
only possible by
switching off.
plug broken.
Synchronizer defective.
Replace synchronizer.
Control box defective.
Replace control box.
Hub of synchronizer insecurely fixed on machine shaft.
Instructions.
Tension of V-belt not taut
Irregular stopping
or continuation of
operation after
stop signal given.
Stop only possible
by switching off.
enough. V-belt slips.
Correct tension in accordance
with Instructions.
Machine pedal is jammed or
Repair or replace pedal.
actuates by own weight.
Positioning speed (speed of
machine shaft on which
Adjust correct positioning
speed in accordance with
synchronizer is mounted)
Instructions.
too high.
Synchronizer defective.
Intermediate
speed ranges are
missing. (Machine
runs only at
positioning or
maximum speed.)
Fix hub in accordance with
Control box defective.
Replace synchronizer.
Replace control box.
Synchronizer defective.
Replace synchronizer.
Control box defective.
Replace control box.
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PROBLEM
PROBABLE CAUSE
CORRECTIVE ACTION
Clutch air gap too wide.
Clutch bearing defective.
Adjust clutch air gap.
Clutch and/or brake lining, or
Replace defective parts.
Replace bearing.
friction disc worn down or
Motor has unusual
noise and
vibration.
defective.
Hub of synchronizer insecurely
fixed on machine shaft.
Control box defective.
Tension of V-beit too taut or
not taut enough.
Fix hub in accordance with
instructions.
Replace control box.
Correct tension in accordance
with instructions.
Pulleys of motor and machine
are not alined.
Alined.
Additional device improperly
connected, cord wrong or
Correct connections, if necessary,
replace cord.
defective.
No additional
functions {e.g.
trimming, wiping,
foot lifting, etc.)
Additional device defective
Repair devices.
(e.g. magnet or magnetic
valve is jammed or burn out,
knife jams, etc.)
Control box defective.
Replace control box.
\A/hen ordering extra control box, printed circuit board, or speed adjuster assembly for service or
repair, please refer to the following tables.
1) Control box
I
TYPE
PHASE
PARTS NUMBER
MTS-N5905501
1
3
IV1TS-N5905101
1
MTS-N5905601
3
MTS-N5905201
1
MTS-N5905701
3
MTS-N5905301
1
MTS-N5905801
3
MTS-N5905401
2) Printed circuit boards & Speed adjuster assembly
"M"
(
I
P.O. Board
P.O. Board
"C"
P.O. Board
Speed adjuster
ass'y
MTS-N5905901
fvlTS-N5801401
MTS-N5801101
MTS-N5801501
MTS-N5801201
MTS-N5801501
From the library of: Superior Sewing Machine & Supply LLC
From the library of: Superior Sewing Machine & Supply LLC
Part No.
Description
MTS-N2007601~
Pulley cover B
MTS-N 1300602
MTS-N7001213
Washer
MTS-N59Q5901
MTS-N7000112
SL-4Q5tQ41-SE
MTS-N2007701
NM-6100002-SE
Screw
Screw
MTS-N5906001
MTS-N59Q6101
Speed conirol lever ass'y
Pulley cover A
MTS-N59C6201
NutMIO
MTS-N7000119
Speed control lever ass'y
Screw
MTS-N2500501
Tutje
MTS-N20091D1
Washer
SL-4040841-SE
Screw
MTS-N2009201
Mounting plate A
M'^-N2007a01
Cover
MTS-N2009301
MTS-N1300301
Adjusimeni screw
MTS-N2009401
Mounting plate B
Mounting plate
MTS-N7001006
Ball bearing 6302
MTS-N7109944
Potentiometer
MTS-N7000606
Key
MTS-N7109945
Potentiometer with switches
MTS-N20Q7901
MTS-N70006Q7
MTS-N7t0011t
MTS-N2501401
Output shall
Key
MTS-N7000120
Screw
MTS-N2700601
Spring
MTS-N71C9946
Note
Control Pox
Speed conirollever ass'y
Speed control lever ass'y
Filter ass'y
NM-6040002-SE
Cap
Reslster
Nut
MTS-N1300401
Ciulch-end cover
WS-04t0002-KR
^rlng washer
MTS-N7100316
MTS-N2501501
MTS-N2700501
SL-4041091-SE
Connector ass'y
WP-0430801-SE
Washer
Strainrelief
SM-4041001-SE
Bushing
MTS-N7109947
Screw
MTS-N7000121
Screw
Rectllier
Screw
MTS-N2006001
Friction disc
MTS-N5705601
Transformer (Ph. 220V)
WT-0400QQ1-KE
Toothed ioci< washer
MTS-N5705701
Transformer(Ph. 115V)
MTS-N7000109
Screw
WP-0531001-SE
Washer
MTS-N5101601
Brake coil ass'y
MTS-N7109926
Capacitor
MTS-N5101501
Clutch coilass'y
Screw
MTS-N570580t
Connector panel ass'y (HSV)
MTS-N7000113
MTS-N5705901
Connector panel ass'y (115V)
M7S-N5906501
Moving disc ass'y
MTS-N5706001
MT5-N2500601
Nylon ring
MTS-N5706101
MTS-N7100112
Spring
MTS-N5706201
MTS-N10Q2301
MTS-N2QQ80Q1
VVT-04Q(X>04-KE
Bearinghousing
MTS-N5706301
Connector panel ass'y
Connector panel ass'y
Connector panel ass'y
Connector panel ass 'y
(115V)
(115V)
(220V)
(220V)
Washer
MTS-N5706401
Connector panel ass'y (220V)
Toothed lock washer
MTS-N5706501
Connector panel ass'y (220V)
SM-1040e01-SE
Screw
MTS-N5801101
Printed circuit board M ass'y
MTS-N7000114
MTS-N5801201
Printed circuit tioard M ass'y
MTS-N20081QT~
Screw
Collar
MTS-N7001221
Nylon washer
MTS-N1002401
Flywheel
MTS-N7001220
Nylon washer
MTS-N 2003201
Fan
MTS-N58C1501
Printed circuit board L ass'y
MTS-N1002501
Motor-end cover
MTS-N7109948
(Dover ass'y
MTS-N7001001
Ball bearing 6202
Ball bearing 6203
MTS-N7109927
Mounting spacer
MTS-N2501601
Strain relief
MTS-N7001003
MTS-N7001222
MTS-N2009501
MTS-N7000608
Thrust wave washer
MTS-N2501701
Retainingring
Key
SM-4041Q01-SE
Strain relief
Screw
ST-4040321-SH
Tapping screw
•20
MTS-N5200601
Rotor ass'y
MTS-N5801301
Printed circuit board cass'y
•10
MTS-N52007Q1
Rotorass'y
MTS-N5801401
MTS-N2Q0B301
MTS-N7000115
Collar
MTS-N7109949
Printed circuit board cass'y
(Dover ass'y
Screw
MTS-N2501801
MTS-N5101701
Frame ass'y
MTS-N7109950
•20
Nylon bushing
Fuse holder
Tachogenerator ass'y
•10
MTS-N5101B01
Frameass'y
MTS-N5906601
•20
MTS-N5102201
Frame ass'y
MTS-N7000111
Mounting screw
•10
MTS-N5102301
Frame ass'y
Big
MTS-N2500601
Spacer
Big
MTS-N2500901
Spacer for magnet carrier plate
MTS-N5901101
Magnetcarrier plate
Big
Big
MTS-N5901201
Magnet carrier plate
MTS-N2501001
Magnet carrier plate holder
SM-1C51601-SE
Screw
NU-6100002-SE
NuiMiO
WS-1020002-KR
Spring washer M10
WP-1052001-SE
Washer
MTS-N7000207
Belt adjusting bolt
MTS-N20096Q1
Retaining ring
MTS-N2008401
Belt tightener hinge pin
BiH
Biia
MTS-N2S01101
Cover
MTS-N2009701
Belt tightener hinge pin
BiEl
MTS-N7000304
Retainingboll
MTS-N20085Q1
Washer
MTS-N7000407
NutSM 15(64
MTS-N1002601
Belt tightener
Mounting bolt
gpi
Bn
MTS-N2501901
Nylon band
MTS-N5101901
Clutch-endcover ass'y
Rotorand flywheel ass'y
Rotorand flywheei ass'y
MTS-N70002Q5
•20
•10
MTS-N7001216
WS-Oe20002-KR
NM-6060002-SE
Washer
MTS-N5102001
Spring washer M8
MTS-N6102101
Nut MS
MTS-N5901301
MTS-N7109941
Terminal block
MTS-N7109935
MTS-N7109942
Terminal block
MTS-N7109951
MTS-N7000116
MTS-N2008601
Screw
Terminalwasher
MTS-NS905501
MTS-N5905601
MTS-N7000117
Terminal screw
MTS-N5905701
•20
MTS-N2008701
End-cover
MTS-N5905801
•10
MTS-N 2008801
End-cover
MTS-N5905101
♦10
MTS-N20C8901
Strain relief
MTS-N5905201
MTS-N 7000122
SM-8051030-SE
MTS-N7001223
Grounding screw
MTS-N5905301
Set screw
MTS-N59054Q1
(Dontrol box ass'y |22QV)
Washer
MTS-N57022Q1
MTS-N7109943
Capacitor
MTS-N570660t
Springass'y
Springass'y
MTS-N5706701
Spring ass'y
MTS-N2009001
Mounting plate
•10
MTS-N7000116
Screw
"74
MTS-N1300501
Control box
For
For
70 ...... For
71 ... ... For
72 ...... For
10 ...
Special lining application material
CDontiol box ass'y (ttSV)
(Dontrol box ass'y (itSV)
(Dontrol box ass'y (itSV)
(Doniioi boxass'y
(Dontrol boxass y
(Dontrol boxass'y
Conirolboxass'y
•10
20 ......
Synchronizer
Fuse
single phase motor
3 phase motor
JTG type
JTH type
JTK type
•73 ... .. For JTL type
•74 ... ..
For JTG, JTH type
•75 .. .. For JTK. JTL type
•76 ...... For JTH. JTL type
(ti5V)
(22QV)
(220V)
(220V)
. with trimmer an(J wiper
. with trimmer, wiper and presser foot lifter
. with trimmer, wiper and back tacker
with trimmer, wiper, back tacker and
presser foot lifter
From the library of: Superior Sewing Machine & Supply LLC
EXPLODED VIEW
116 /
372 350
119 1
Life
120
116
®
n (S» • -"»
From the library of: Superior Sewing Machine & Supply LLC