JUKI PLN-985 User manual
No.02
40095719
INSTRUCTION MANUAL
PLN-985
NOTE : Read safety instructions carefully and understand them before using.
Retain this Instruction Manual for future reference.
Copyright C2011-2013 JUKI CORPORATION
• All rights reserved throughout the world.
Please do not hesitate to contact our distributors or agents in your area for further information when necessary.
＊
The description covered in this instruction manual is subject to change for improvement of the
commodity without notice.
13 · 09 Printed in Japan
SEWING MACHINERY BUSINESS UNIT
2-11-1, TSURUMAKI, TAMA-SHI,
TOKYO, 206-8551, JAPAN
PHONE : (81)42-357-2371
FAX : (81)42-357-2380
http://www.juki.com
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For the sewing machine, automatic machine and ancillary devices (hereinafter collectively referred to as
"machine"), it is inevitable to conduct sewing work near moving parts of the machine. This means that there
is always a possibility of unintentionally coming in contact with the moving parts. Operators who actually
operate the machine and maintenance personnel who are involved in maintenance and repair of the machine
are strongly recommended to carefully read to fully understand the following SAFETY PRECAUTIONS
before using/maintaining the machine. The content of the SAFETY PRECAUTIONS includes items which
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– 11 –
23. TROUBLES IN SEWING AND CORRECTIVE MEASURES
– 10 –
21. THE NEEDLE-TO-FEED DOG RELATIONSHIP
22. MOTOR PULLEY AND SEWING SPEED
1) Use an M type V belt.
2) The following table shows the relationship among the motor pulley and the sewing speed.
Model Sewing speed Effective diameter of
handwheel
Number
of poles Frequency Rotational speed
of motor
Effective diameter
of motor pulley
PLN-985 2,500 sti/min φ95.3 mm 2 50 Hz 2,840 rpm φ80
60 Hz 3,400 rpm φ70
(Caution) The effective diameter of the motor pulley is obtained by subtracting 5 mm from the outside diameter.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
Fig. A
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EHIRUHXVLQJLWLQRUGHUWRSUHYHQWDFFLGHQWFDXVHGE\PDOIXQFWLRQRIWKHPDFKLQH
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6REHVXUHWRWXUQWKHSRZHURQDIWHUKDYLQJZDLWHGIRUDVXI¿FLHQWSHULRGRIWLPHXQWLOWKHUHLVQRVLJQ
RIZDWHUGURSOHWLQRUGHUWRSUHYHQWDFFLGHQWFDXVHGE\EUHDNDJHRUPDOIXQFWLRQRIWKHHOHFWULFDOFRPSR
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RUGHUWRSUHYHQWDFFLGHQWFDXVHGE\EUHDNDJHRUPDOIXQFWLRQRIWKHHOHFWULFDOFRPSRQHQWV
'HSHQGLQJRQWKHUDGLRZDYHVLJQDOFRQGLWLRQWKHPDFKLQHPD\JHQHUDWHQRLVHLQWKH79RUUDGLR,IWKLV
RFFXUVXVHWKH79RUUDGLRZLWKNHSWZHOODZD\IURPWKHPDFKLQH
,QRUGHUWRHQVXUHWKHZRUNHQYLURQPHQWORFDOODZVDQGUHJXODWLRQVLQWKHFRXQWU\ZKHUHWKHVHZLQJ
PDFKLQHLVLQVWDOOHGVKDOOEHIROORZHG
,QWKHFDVHWKHQRLVHFRQWUROLVQHFHVVDU\DQHDUSURWHFWRURURWKHUSURWHFWLYHJHDUVKRXOGEHZRUQDF
FRUGLQJWRWKHDSSOLFDEOHODZVDQGUHJXODWLRQV
'LVSRVDORISURGXFWVDQGSDFNDJHVDQGWUHDWPHQWRIXVHGOXEULFDWLQJRLOVKRXOGEHFDUULHGRXWSURSHUO\
DFFRUGLQJWRWKHUHOHYDQWODZVRIWKHFRXQWU\LQZKLFKWKHVHZLQJPDFKLQHLVXVHG
– 9 –
19. THE FRONT/REAR POSITION OF THE ROLLER PRESSER FOOT
20. INSTALLING OR REMOVING THE HOOK
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
– 8 –
17.
ADJUSTING THE NEEDLE BAR HEIGHT AND TIMING FOR ALIGNING THE NEEDLE AND THE HOOK BLADE POINT
(Caution) The standard for the needle bar bottom point is as follows:
• The distance from the lower end of the needle bir to the upper face
of the throat plate is 12 mm.
18. ADJUSTING THE BOBBIN CASE OPENING LEVER
Needle bar
Throat plate
0.2 to 0.3mm
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
v
1. Keep your hands away from needle when you turn ON the power switch or while the
machine is in operation.
2. Donotputyourngersintothethreadtake-upcoverwhilethemachineisoperating.
3. Turn OFF the power switch when tilting the machine head, or removing the belt cover
or the V belts.
4. During operation, be careful not to allow your or any other person’s head, hands or
clothestocomeclosetothehandwheelandthreadtake-uplever.Also,donotplace
anything close to them.
5. Donotoperateyourmachinewiththebeltcoverandngerguardremoved.
6. Whentiltingthemachinehead,besuretoconrmthattheheadsupportbarisprop-
erlyattachedtoyourmachinehead,andbecarefulnottoallowyourngersorthelike
to be pinched in the machine head.
1. To ensure safety, never operate the machine with the ground wire for the power sup-
ply removed.
2. When inserting/removing the power plug, the power switch has to be turned OFF in
advance.
3. Intimeofthunderandlightening,stopyourworkanddisconnectthepowerplugfrom
the receptacle so as to ensure safety.
4. If the machine is suddenly moved from a cold place to a warm place, dew condensa-
tion may be observed. In this case, turn ON the power to the machine after you have
conrmedthatthereisnodangerofwaterdropsinthemachine.
5. Topreventres,periodicallydrawoutthepowerplugfromtheplugsocketandclean
the root of the pins and the space between pins.
6. Thehookrotatesatahighspeedwhilethemachineisinoperation.
Topreventpossibleinjurytohands,besuretokeepyourhandsawayfromthevicin-
ityofthehookduringoperation.Inaddition,besuretoturnOFFthepowertothe
machine when replacing the bobbin.
7. To avoid possible accidents due to abrupt start of the machine, be sure to turn OFF
the power to the machine.
8. Becarefulofhandlingthisproductsoasnottopourwateroroil,shockbydropping,
andthelikesincethisproductisaprecisioninstrument.
9. When tilting or returning the sewing machine to the home position, hold the upper
sideofthemachineheadwithbothhandsandperformtheworkquietlysothatngers
orthelikearenotcaughtinthemachine.
PrecautionstobetakensoastousethePLN-985moresafely
vi
• Beforeyouputthemachineintooperationforthersttimeaftertheset-up,cleanitthoroughly.
Remove all dust gathering during transportation and oil it well.
• Conrmthatvoltagehasbeencorrectlyset.
Conrmthatthepowerplughasbeenproperlyconnectedtothepowersupply.
• Never use the machine in the state where the voltage type is different from the designated one.
• Thedirectionofnormalrotationofthemachineiscounterclockwiseasobservedfromthepul-
ley side.
Takecarenottoallowthemachinetorotateinthereversedirection.
• Whentiltingthemachinehead,tiltitafterremovingkneelifterhook.
• Never operate the machine before lubricating.
• For a test run, remove the bobbin and the needle thread.
• Fortherstmonth,decreasethesewingspeedandrunthesewingmachineataspeedof1,500
sti/min or less.
• Operate the handwheel after the machine has totally stopped.
CAUTION :
Checkthefollowingsoastopreventmaloperationofanddamagetothemachine.
BEFORE OPERATION
– 7 –
14. ADJUSTING THE PRESSER FOOT PRESSURE
15. THE HEIGHT OF THE FEED DOG
16. THE NEEDLE-TO-HOOK BLADE POINT RELATIONSHIP
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
– 6 –
11. THE NEEDLE THREAD TENSION
12. THE BOBBIN THREAD TENSION
13. THE THREAD TAKE-UP SPRING
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
vii
ENGLISH
DECLARATION OF INCORPORATION OF PARTLY COMPLETED MACHINERY
We hereby declare that the sewing machine (sewing head) described below ;
1. Must not be put into service until the machinery to which it is incorporated has been declared in
conformity with the provisions of the Directive 2006/42/EC, and
2. Conforms to the essential requirements of the Directive 2006/42/EC, described in the technical
documentation, and
3. To be prepared with the above technical documentation compiled in accordance with part B of
Annex VII, and
4. Also to conform to the RoHS Directive 2011/65/EU
5. Relevant information on which should be transmitted in response to a reasoned request by the
national authorities, by the electronic method or other according to the request.
Applied harmonized standards, in particular :
EN ISO12100, EN ISO10821, EN 50581
Manufacturer :
JUKI CORPORATION
2-11-1, Tsurumaki, Tama-shi, Tokyo, Japan
Model
Description Industrial Sewing Machine
Function make stitches and sew
PLN-985
viii
CONTENTS
SPECIFICATIONS ...........................................................................................................................1
1. INSTALLATION .....................................................................................................................1
2. INSTALLING THE THREAD STAND.......................................................................................2
3. LUBRICATION.......................................................................................................................3
4. INSTALLING THE BELT COVER AND THE BOBBIN WINDER................................................3
5. OPENING/CLOSING THE ROLLER PRESSER FOOT..............................................................4
6. INSTALLING THE NEEDLE....................................................................................................4
7. WINDING BOBBIN THREAD.................................................................................................4
8. THREADING BOBBIN THREAD ............................................................................................5
9. HOW TO THREAD A NEEDLE ...............................................................................................5
10. ADJUSTING THE STITCH LENGTH.......................................................................................5
11. THE NEEDLE THREAD TENSION..........................................................................................6
12. THE BOBBIN THREAD TENSION..........................................................................................6
13. THE THREAD TAKE-UP SPRING ...........................................................................................6
14. ADJUSTING THE PRESSER FOOT PRESSURE ......................................................................7
15. THE HEIGHT OF THE FEED DOG..........................................................................................7
16. THE NEEDLE-TO-HOOK BLADE POINT RELATIONSHIP .....................................................7
17. ADJUSTING THE NEEDLE BAR HEIGHT AND TIMING FOR ALIGNING THE NEEDLE AND
THE HOOK BLADE POINT....................................................................................................8
18. ADJUSTING THE BOBBIN CASE OPENING LEVER ..............................................................8
19. THE FRONT/REAR POSITION OF THE ROLLER PRESSER FOOT .........................................9
20. INSTALLING OR REMOVING THE HOOK.............................................................................9
21. THE NEEDLE-TO-FEED DOG RELATIONSHIP ................................................................... 10
22. MOTOR PULLEY AND SEWING SPEED............................................................................. 10
23. TROUBLES IN SEWING AND CORRECTIVE MEASURES................................................... 11
– 5 –
8. THREADING BOBBIN THREAD
9. HOW TO THREAD A NEEDLE
10. ADJUSTING THE STITCH LENGTH
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
– 4 –
5. OPENING/CLOSING THE ROLLER PRESSER FOOT
6. INSTALLING THE NEEDLE
The standard needle is a SCHMETS 134, Nm100.
1. Turn the handwheel to allow the needle bar to go up to its top
position.
2. Loosen screws 2and place needle 1with its recess Afacing
directly sideways.
3. Insert the needle fully into the needle hole until it will go no
further.
4. Firmly tighten screws 2.
7. WINDING BOBBIN THREAD
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
– 1 –
SPECIFICATIONS
Type of sewing ma-
chine head Post-bed, 1-needle, Needle-Feed Lockstitch Machine Needle (standard) SCHMETS 134, Nm100
Usage Leathers, such as shows, etc. Needle system Nm100 to Nm130
Sewing speed 2,500 sti/min (max.) Thread #40 to #8
Stitch length 4 mm (max.) Stitch adjuster
method Dial type
Lift of presser foot Hand lifter : 6.5 mm, Knee lifter : 9mm Lubrication method Hand oiling and oil tank drop lubrication
Thread take-up lever Slide type thread take-up lever Motor to be used Clutch motor (2P) 3 phase 400W
Needle bar stroke 33.4 mm Oil to be used JUKI New Defrix Oil No.1
Noise
- Equivalent continuous emission sound pressure level (LpA) at the workstation:
A-weighted value of 78.5 dB; (Includes KpA = 2.5 dB); according to ISO 10821- C.6.2 -ISO 11204 GR2 at 2,500
sti/min.
1. INSTALLATION
1) Mounting locations for the knee lifter and the oil pan
61mm
61mm
196mm
24mm
73mm
Oil pan Knee lifter
support
196mm
2) Attaching the support rubbers
Fix the support rubbers 1on the four corners of the table using
nails 2.
Adhere felts 3with adhesive glue on support rubbers 1.
1
2
3
3) Carry the sewing machine with two persons.
(Caution) Do not hold the handwheel.
4) Do not put protruding articles such as the screwdriver and the like at the location where the sewing machine is placed.
(Caution)Be sure to install the knee lifter
before installing the motor.
– 2 –
5) Attaching the hinge arm
Install hinge arms 4to the front and rear (at one location each) of
the sewing machine head with screws 5. Hook hinge seats 6on
hinge arms 4.
(When hooking hinge seats 6on the hinge arms 4, face the counter
sunk plane of the hinge seats 6upward.
6
5
4
6) Installation of the machine
Put the sewing machine head on the table with the sewing machine
head and hinge seats 6aligned.
Fix hinge seats 6with wood screws 7supplied with the unit.
7
2. INSTALLING THE THREAD STAND
Assemble the thread stand, set it up on the machine table using the
installation hole in the table and tighten nut 1gently.
1
– 3 –
3. LUBRICATION
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
4. INSTALLING THE BELT COVER AND THE BOBBIN WINDER
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
– 2 –
5) Attaching the hinge arm
Install hinge arms 4to the front and rear (at one location each) of
the sewing machine head with screws 5. Hook hinge seats 6on
hinge arms 4.
(When hooking hinge seats 6on the hinge arms 4, face the counter
sunk plane of the hinge seats 6upward.
6
5
4
6) Installation of the machine
Put the sewing machine head on the table with the sewing machine
head and hinge seats 6aligned.
Fix hinge seats 6with wood screws 7supplied with the unit.
7
2. INSTALLING THE THREAD STAND
Assemble the thread stand, set it up on the machine table using the
installation hole in the table and tighten nut 1gently.
1
– 3 –
3. LUBRICATION
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
4. INSTALLING THE BELT COVER AND THE BOBBIN WINDER
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
– 4 –
5. OPENING/CLOSING THE ROLLER PRESSER FOOT
6. INSTALLING THE NEEDLE
The standard needle is a SCHMETS 134, Nm100.
1. Turn the handwheel to allow the needle bar to go up to its top
position.
2. Loosen screws 2and place needle 1with its recess Afacing
directly sideways.
3. Insert the needle fully into the needle hole until it will go no
further.
4. Firmly tighten screws 2.
7. WINDING BOBBIN THREAD
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
– 1 –
SPECIFICATIONS
Type of sewing ma-
chine head Post-bed, 1-needle, Needle-Feed Lockstitch Machine Needle (standard) SCHMETS 134, Nm100
Usage Leathers, such as shows, etc. Needle system Nm100 to Nm130
Sewing speed 2,500 sti/min (max.) Thread #40 to #8
Stitch length 4 mm (max.) Stitch adjuster
method Dial type
Lift of presser foot Hand lifter : 6.5 mm, Knee lifter : 9mm Lubrication method Hand oiling and oil tank drop lubrication
Thread take-up lever Slide type thread take-up lever Motor to be used Clutch motor (2P) 3 phase 400W
Needle bar stroke 33.4 mm Oil to be used JUKI New Defrix Oil No.1
Noise
- Equivalent continuous emission sound pressure level (LpA) at the workstation:
A-weighted value of 78.5 dB; (Includes KpA = 2.5 dB); according to ISO 10821- C.6.2 -ISO 11204 GR2 at 2,500
sti/min.
1. INSTALLATION
1) Mounting locations for the knee lifter and the oil pan
61mm
61mm
196mm
24mm
73mm
Oil pan Knee lifter
support
196mm
2) Attaching the support rubbers
Fix the support rubbers 1on the four corners of the table using
nails 2.
Adhere felts 3with adhesive glue on support rubbers 1.
1
2
3
3) Carry the sewing machine with two persons.
(Caution) Do not hold the handwheel.
4) Do not put protruding articles such as the screwdriver and the like at the location where the sewing machine is placed.
(Caution)Be sure to install the knee lifter
before installing the motor.
viii
CONTENTS
SPECIFICATIONS ...........................................................................................................................1
1. INSTALLATION .....................................................................................................................1
2. INSTALLING THE THREAD STAND.......................................................................................2
3. LUBRICATION.......................................................................................................................3
4. INSTALLING THE BELT COVER AND THE BOBBIN WINDER................................................3
5. OPENING/CLOSING THE ROLLER PRESSER FOOT..............................................................4
6. INSTALLING THE NEEDLE....................................................................................................4
7. WINDING BOBBIN THREAD.................................................................................................4
8. THREADING BOBBIN THREAD ............................................................................................5
9. HOW TO THREAD A NEEDLE ...............................................................................................5
10. ADJUSTING THE STITCH LENGTH.......................................................................................5
11. THE NEEDLE THREAD TENSION..........................................................................................6
12. THE BOBBIN THREAD TENSION..........................................................................................6
13. THE THREAD TAKE-UP SPRING ...........................................................................................6
14. ADJUSTING THE PRESSER FOOT PRESSURE ......................................................................7
15. THE HEIGHT OF THE FEED DOG..........................................................................................7
16. THE NEEDLE-TO-HOOK BLADE POINT RELATIONSHIP .....................................................7
17. ADJUSTING THE NEEDLE BAR HEIGHT AND TIMING FOR ALIGNING THE NEEDLE AND
THE HOOK BLADE POINT....................................................................................................8
18. ADJUSTING THE BOBBIN CASE OPENING LEVER ..............................................................8
19. THE FRONT/REAR POSITION OF THE ROLLER PRESSER FOOT .........................................9
20. INSTALLING OR REMOVING THE HOOK.............................................................................9
21. THE NEEDLE-TO-FEED DOG RELATIONSHIP ................................................................... 10
22. MOTOR PULLEY AND SEWING SPEED............................................................................. 10
23. TROUBLES IN SEWING AND CORRECTIVE MEASURES................................................... 11
– 5 –
8. THREADING BOBBIN THREAD
9. HOW TO THREAD A NEEDLE
10. ADJUSTING THE STITCH LENGTH
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
– 6 –
11. THE NEEDLE THREAD TENSION
12. THE BOBBIN THREAD TENSION
13. THE THREAD TAKE-UP SPRING
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
vii
ENGLISH
DECLARATION OF INCORPORATION OF PARTLY COMPLETED MACHINERY
We hereby declare that the sewing machine (sewing head) described below ;
1. Must not be put into service until the machinery to which it is incorporated has been declared in
conformity with the provisions of the Directive 2006/42/EC, and
2. Conforms to the essential requirements of the Directive 2006/42/EC, described in the technical
documentation, and
3. To be prepared with the above technical documentation compiled in accordance with part B of
Annex VII, and
4. Also to conform to the RoHS Directive 2011/65/EU
5. Relevant information on which should be transmitted in response to a reasoned request by the
national authorities, by the electronic method or other according to the request.
Applied harmonized standards, in particular :
EN ISO12100, EN ISO10821, EN 50581
Manufacturer :
JUKI CORPORATION
2-11-1, Tsurumaki, Tama-shi, Tokyo, Japan
Model
Description Industrial Sewing Machine
Function make stitches and sew
PLN-985
vi
• Beforeyouputthemachineintooperationforthersttimeaftertheset-up,cleanitthoroughly.
Remove all dust gathering during transportation and oil it well.
• Conrmthatvoltagehasbeencorrectlyset.
Conrmthatthepowerplughasbeenproperlyconnectedtothepowersupply.
• Never use the machine in the state where the voltage type is different from the designated one.
• Thedirectionofnormalrotationofthemachineiscounterclockwiseasobservedfromthepul-
ley side.
Takecarenottoallowthemachinetorotateinthereversedirection.
• Whentiltingthemachinehead,tiltitafterremovingkneelifterhook.
• Never operate the machine before lubricating.
• For a test run, remove the bobbin and the needle thread.
• Fortherstmonth,decreasethesewingspeedandrunthesewingmachineataspeedof1,500
sti/min or less.
• Operate the handwheel after the machine has totally stopped.
CAUTION :
Checkthefollowingsoastopreventmaloperationofanddamagetothemachine.
BEFORE OPERATION
– 7 –
14. ADJUSTING THE PRESSER FOOT PRESSURE
15. THE HEIGHT OF THE FEED DOG
16. THE NEEDLE-TO-HOOK BLADE POINT RELATIONSHIP
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
– 8 –
17.
ADJUSTING THE NEEDLE BAR HEIGHT AND TIMING FOR ALIGNING THE NEEDLE AND THE HOOK BLADE POINT
(Caution) The standard for the needle bar bottom point is as follows:
• The distance from the lower end of the needle bir to the upper face
of the throat plate is 12 mm.
18. ADJUSTING THE BOBBIN CASE OPENING LEVER
Needle bar
Throat plate
0.2 to 0.3mm
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
v
1. Keep your hands away from needle when you turn ON the power switch or while the
machine is in operation.
2. Donotputyourngersintothethreadtake-upcoverwhilethemachineisoperating.
3. Turn OFF the power switch when tilting the machine head, or removing the belt cover
or the V belts.
4. During operation, be careful not to allow your or any other person’s head, hands or
clothestocomeclosetothehandwheelandthreadtake-uplever.Also,donotplace
anything close to them.
5. Donotoperateyourmachinewiththebeltcoverandngerguardremoved.
6. Whentiltingthemachinehead,besuretoconrmthattheheadsupportbarisprop-
erlyattachedtoyourmachinehead,andbecarefulnottoallowyourngersorthelike
to be pinched in the machine head.
1. To ensure safety, never operate the machine with the ground wire for the power sup-
ply removed.
2. When inserting/removing the power plug, the power switch has to be turned OFF in
advance.
3. Intimeofthunderandlightening,stopyourworkanddisconnectthepowerplugfrom
the receptacle so as to ensure safety.
4. If the machine is suddenly moved from a cold place to a warm place, dew condensa-
tion may be observed. In this case, turn ON the power to the machine after you have
conrmedthatthereisnodangerofwaterdropsinthemachine.
5. Topreventres,periodicallydrawoutthepowerplugfromtheplugsocketandclean
the root of the pins and the space between pins.
6. Thehookrotatesatahighspeedwhilethemachineisinoperation.
Topreventpossibleinjurytohands,besuretokeepyourhandsawayfromthevicin-
ityofthehookduringoperation.Inaddition,besuretoturnOFFthepowertothe
machine when replacing the bobbin.
7. To avoid possible accidents due to abrupt start of the machine, be sure to turn OFF
the power to the machine.
8. Becarefulofhandlingthisproductsoasnottopourwateroroil,shockbydropping,
andthelikesincethisproductisaprecisioninstrument.
9. When tilting or returning the sewing machine to the home position, hold the upper
sideofthemachineheadwithbothhandsandperformtheworkquietlysothatngers
orthelikearenotcaughtinthemachine.
PrecautionstobetakensoastousethePLN-985moresafely
iv
iv
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– 9 –
19. THE FRONT/REAR POSITION OF THE ROLLER PRESSER FOOT
20. INSTALLING OR REMOVING THE HOOK
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
– 10 –
21. THE NEEDLE-TO-FEED DOG RELATIONSHIP
22. MOTOR PULLEY AND SEWING SPEED
1) Use an M type V belt.
2) The following table shows the relationship among the motor pulley and the sewing speed.
Model Sewing speed Effective diameter of
handwheel
Number
of poles Frequency Rotational speed
of motor
Effective diameter
of motor pulley
PLN-985 2,500 sti/min φ95.3 mm 2 50 Hz 2,840 rpm φ80
60 Hz 3,400 rpm φ70
(Caution) The effective diameter of the motor pulley is obtained by subtracting 5 mm from the outside diameter.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that
the motor has totally stopped rotating in prior.
Fig. A
iii
iii
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