Brother DH4-B980 User Manual

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Page 1

DH4-B980 RH-9800

Please read this manual before usi ng the machin e. Please keep this manual within easy reach for quick reference.

ELECTRONIC EYELET BUTTON HOLER

INSTRUCTION MANUAL

Page 2

Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions below and the explanations given in the instruction manual.

With industrial sewing m achines, it is nor mal to carr y out work whil e position ed directl y in front of m oving parts such as the needle and thread take- up lever, and consequently there is a lways a danger of injury that can be caused by these parts. Follow the instructions from training personnel and instructors regarding safe and correct operation before operating the machine so that you will know how to use it correctly.

SAFETY INSTRUCTIONS

1. Safety indications and their meanings

This instruction m anual and the indications and s ymbols that are used on the m achine itself are provided in order to ensure safe operation of this machine and to prevent accidents and injury to yourself or other people. The meanings of these indications and symbols are given below.

Indications

DANGER CAUTION

Symbols

The instructions which follo w this term indic ate situations where f ailure to f ollow the instructions will almost certainly result in death or severe injury.

The instructions which follo w this term indic ate situations where f ailure to f ollow the instructions could cause injury when using the machine or physical damage to equipment and surroundings.

........................................This symbol ( ) indicates something that you should be careful of. The

picture inside the triangl e indic ates t he na ture of the caution that m ust be taken. (For example, the symbol at left means “beware of injury”.)

........................................This symbol (

........................................This symbol ( ) indicates something that you must do. The picture

inside the circle indicates the nature of the thing that must be done.

(For example, the symbol at left means “you must make the ground

connection”.)

) indicates something that you must not do.

RH-9800

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2. Notes on safety

Wait at least 5 minutes after turning off the power switch and dis c onnecting the power cord fr om the wall ou tlet before opening the face plate of the contro l box. Touching areas where high voltages are present can result in severe injury.

Environmental requirements

D ANGER

CAUTION

Use the sewing machine in an area which is free from sources of strong electrical noise such as high-frequency welders. Sources of stron problems with correct operation.

Any fluctuations in the power supply voltage should be within the machine. Voltage fluctuations which are greater than this may cause problems with correct operation.

The

ower supply capacity should be greater than the requirements for the sewing machine’s electrical consumption. Insufficient problems with correct operation.

neumatic delivery capability should be

The

reater than the requirements for the sewin machine's total air consumption. Insufficient cause problems with correct operation.

electrical noise may cause

10% of the rated voltage for

ower supply capacity may cause

neumatic delivery capability ma

Installation

Machine installation shoul d only be carried out b a qualified technician.

Contact your Brother dealer or a qualified electrician for any electrical work that may need to be d one.

The sewin The installation should be carried out b more people.

Do not connect the com the start swi t ch i s result in injury.

Be sure to connect the connection is not secure, you run a high risk of receiving a serious electric shock, and problems with correct operation may also occur.

machine weighs more than 87 kg.

two or

ower cord until ins tallation is

lete, otherwise the m achine may operate if

ressed by mistake, which could

round. If the ground

The ambient temperature should be within the range of 5 to 35 during use. Tem

eratures which are lower or h igher than this

may cause problems with correct operation. The relative humidit

45% to 85% durin should occur in any devices. Excessively dry or humid environm ents and dew formation ma operation.

Avoid exposure to direct sunlight during use.

osure to direct sunlight may cause problems

Ex with correct operation.

In the event of an electrical storm, turn off the

ower and disconnect the power cord from the wall outlet. Lightning may cause problems with correct operation.

ll cords should be sec ured at least 25 mm awa from any moving parts. Furthermore, do not excessively bend the cords or secure them too

with staples, otherwise there is the danger

firml that fire or electric shocks could occur.

Install the belt covers to the machine head and motor.

If usin should be secured in such a way so that the cannot move.

Be sure to wear when handlin that the skin, otherwise inflammation can result. Furthermore, do not drink the oi l or eat the grease under an vomiting and diarrhoea. Keep the oil out of the reach of children.

a work table which has casters, the casters

do not get into your eyes or onto your

circumstances, as they can cause

should be within the range of

use, and no dew formation

cause problems with correct

rotective goggles and gloves

the lubricating oil and grease, so

RH-9800

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CAUTION

gogg

y op

Sewing

This sewing machine should only be used by operators who have received the necessary training in safe use beforehand.

The sewin applications other than sewing.

Be sure to wear machine. If needle breaks, enter your eyes and injury may result.

Turn off the power switch at the following times, otherwise the machine ma switch is injury.

When threading the needle

When replacing the needle When not using the machine and when leavin the machine unattended

machine should not be used for an

rotective goggles when using the

les are not worn, there is the danger that if a

arts of the broken needle ma

erate if the start

ressed by mistake, which could result in

Cleaning

Turn off the power switch before carrying out cleaning, otherwise the machine may operate if the start swi t ch i s result in injury.

ressed by mistake, which could

If using a work table which has casters, the casters should be secured in such a wa cannot move.

ttach all safety devices before using the sewin machine. If the machine is used without these devices attached, injury may result.

Do not touch an objects against the machine while se wing, as this

result in personal injury or damage to the

ma machine.

If an error occurs in machine o noises or sm ells ar e notic ed, im medi atel

ower switch. Then contact your nearest Brother

dealer or a qualified technician. If the machine develo

nearest Brother dealer or a qualified technician.

Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that the skin, otherwise inflammation can result. Furthermore, do not drink the oi l or eat the grease under an vomiting and diarrhoea. Keep the oil out of the reach of children.

do not get into your eyes or onto your

of the moving parts or press an

s a problem, contact your

circumstances, as they can cause

so that the

eration, or if abnormal

turn off the

Maintenance and inspection

Maintenance and inspection of the sewing machine should only be carr ied out by a qualified technician.

Ask your Brother dealer or a qualified electrician to carry out any maintenanc e and inspection of the electrical system.

Turn off the power switch and disconnect the power cord from the wall outlet at the following times, otherwise the m achine may operate if the start switch is pressed by mistake, which could result in injury.

When carrying out inspection, adjustm ent and maintenance When replacing consum able parts s uch as the loopers and knife

Disconnect the air hoses from the air supply and wait for the needle on the pressure gauge to drop to “0” before carrying out inspection, adjustment and repair of any parts which use the pneum atic equipment.

If the power switch and air need to be left on when carrying out some adjustment, be extremely careful to observe all safety precautions.

Use only the proper replacement parts as specified by Brother.

If any safety devices have been removed, be absolutely sure to re-install them to their original positions and check that they operate correctly before using the machine.

Any problems in machine operation which result from unauthorized modifications to the machine will not be covered by the warranty.

iii

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3. Warning labels

The following warning labels appear on the sewing machine. Please follow the ins tr uc tions on the labe ls at a ll t imes when using the machine. If the labels h av e bee n r emoved or are difficult to read, please contact your nearest Brother dealer.

Do not touch the knif e or press any objects against the machine while sewing, as this may result in personal injury or damage to the machine.

Be sure to connect the ground. If the ground connection is not secure, you run a high risk o receiving a serious electric shock, and problems with correct operation may also occur .

Safety device s

Eye guard Finger guard Needle bar guard Belt cover, etc.

Direction of operation

Eye guard

Needle bar guard

Belt cover

4 (Rear)

Finger

guard

Belt cover

2010Q

RH-9800

Winding prevention bar

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1. NAMES OF EACH PART ............................1

2. SPECIFICA TIONS ..........................................2

2-1. Specifications .......................................................2

3. INSTALLATION.................................................3

3-1. Table processing diagram .................................3

3-2. Installing the motor .............................................4

3-3. Installing the machine head ...............................4

3-4. Installing the oil container ...................................5

3-5. Installing the spool stand ....................................6

3-6. Tightening the V-belt ..........................................6

3-7. Installing the control box ....................................7

3-8.

Installing the air unit and the valve assembly

3-9.

Connecting the ground wires and the wirings

3-10. Connecting the air tubes ....................................9

3-11. Installing the air hoses ......................................10

3-12. Connecting the power cord ..............................11

.......7

.......8

4. LUBRICATION..................................................12

4-1. Adding oil ..........................................................12

4-2. Lubrication ........................................................12

5. CORRECT USE ..............................................14

5-1. Initializing settings .............................................14

5-2.

Changing the lower thread and gimp trimming 5-3.

Checking the direction of machine operation

5-4. Installing the needle ..........................................16

5-5. Threading the upper thread ..............................16

5-6. Threading the lower thread ...............................17

5-7. Threading the gimp ..........................................18

5-8. Setting the material ...........................................18

........14

.......15

6. USING THE OPERA TION PANEL AND FRONT PANEL

6-1. Panel button and switch names ......................19

6-2. Selecting a program number ...........................20

6-3. Changing the mode ..........................................20

6-4. Changing the cutting timing .............................20

6-5. Setting a program .............................................21

A. Setting the sewing speed ...............................22

B. Setting the shape of the eyelet.......................22

C. Setting the buttonhole length .........................22

D. Setting the tacking length ...............................23

E. Setting the offset .............................................23

F. Setting the stitch pitch.....................................23

G. Setting the number of eyelet stitches.............24

H. Setting the cutting space ................................24

I. Setting the knife position compensation ........24

P1. Setting X correction .......................................25

P2. Setting Y correction .......................................25

P3. Setting θ P4. Setting θ

6-6. Using the memory switch .................................27

6-7. List of error codes .............................................29

correction.......................................25

correction.......................................26

...................................19

7. SEWING .............................................................. 30

7-1. Using the EMERGENCY STOP switch .......... 30

7-2. Sewing .............................................................. 31

7-3. Adjusting the thread tension ............................ 32

7-4. Needle and knife position ................................ 33

7-5. Using the production counter .......................... 35

7-6. Using a cycle program ..................................... 36

7-7.

Setting the feed bracket to the front position Switching between single-pedal and dual-pedal

7-8.

operation (Switching the foot controller)

7-9. Using feed mode ............................................. 38

7-10. Using manual mode ........................................ 39

7-11. Changing the cycle program counter ............. 40

7-12.

Setting the number of home position cycles

7-13. Returning to the home position ....................... 41

CLEANING AN D MAI NTEN ANCE

8-1. Cleaning ........................................................... 42

8-2. Draining the oil ................................................. 42

8-3. Checking the air filter ....................................... 42

...... 37

............. 37

...... 40

......42

9. ST ANDARD ADJUSTMENTS ............... 43

Adjusting the height of the spreader and looper

9-1.

9-2. Adjusting the needle and looper timing ........... 44

9-3. Adjusting the loop stroke.................................. 45

9-4. Adjusting the height of the needle bar ............. 46

9-5. Adjusting the clearance between the

looper and needle ............................................. 46

9-6. Adjusting the needle guard .............................. 47

9-7.

Adjusting the spreader mounting positions

9-8. Adjusting the spreader timing .......................... 48

9-9. Adjusting the needle racking width

(stitch width) ...................................................... 48

9-10. Changing the knife cutting length

(Replacing the cutting block)............................ 49

9-11. Adjusting the contact between the knife

and the cutting block ........................................ 50

9-12. Replacing the knife .......................................... 51

9-13. Adjusting the cutting pressure ......................... 51

9-14. Adjusting the cloth opening amount ............... 52

9-15.

Adjusting the trimming of the upper thread 9-16. Adjusting the trimming of the lower thread

and gimp .......................................................... 53

9-17.

Adjusting the gimp length after trimming (-02)

9-18. Lower thread presser (-02) .............................. 55

9-19. Sub presser (-02) ............................................. 55

10.

SUMMARY OF DIP SWITCHES

10-1. Front panel DIP switches .............................. 56

10-2. Circuit board DIP switches ............................ 57

....... 43

......... 47

...... 53

... 54

......... 56

11. TROUBLESHOOTING ............................ 58

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1. NAMES OF EACH PART

1. NAMES OF EACH PA RT

1096

(1 1) (10)

(1)

(2)

(3)

(4)

(5)

(6)

(9)

(8)

(1) Front cover (2) EMERGENCY STOP switch (3) Upper shaft pulley (4) Control panel

(5) Control box (6) Front panel (7) Start switch (8) Cloth presser switch

(9) Foot controller (10) Power switch (11) Motor

RH-9800

(7)

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2. SPECIFICATIONS

2. SPECIFICA TI ONS

2-1. Specifications

Upper thread

DH4-B980RH-9800-

Specification -00 -01 -02

Application Men's clothes and ladies' clothes Jeans and work clothes

Sewing speed 1,000 - 2,000 rpm (100 rpm steps)

Button hole length 10 – 50 mm 10 – 38 mm

Stitch pitch 0.5 - 2.0 mm (0.1 mm steps)

Stitch width 1.5 - 3.2 mm

T a cking length 3 – 43 mm (1 mm steps) or none

Cloth presser height 12 mm 16 mm

St itch shap e

changing

Cut timing selection Selected by a switch

Starting method Dual switch (cloth presser switch and start switch) or single switch

Feed method

Needle DO x 558 Nm 80 – Nm 120 (Schmetz)

Safety equipment

Air pressure

Air consumption 43.2 l/min. (8 cycles/min.)

Noise level 81 dB at max. speed of 2,000 rpm, measured according to ISO 10821

Dimensions 1,200 mm (W) x 590 mm (D) x 1,120 mm (H)

Work table legs T -shaped height-adjustable type

Power supply

Weight 175 kg

Built-in emergency stop function and automatic stopping device which stops the machine when

-00 - -

-01 -

-02 - *

* -02 is further divide d into L1 - L7 specif ications in ac cordance with the s titch

length. Please be sure to specify the stitch length when ordering.

Intermittent feed by three pulse motors (X, Y, θ)

trimmer

Selected by a program

the safety circuit is activated

Main regulator: 0.5 MPa

Knife pressure regulator: 0.3 MPa

Single-phase 110, 200, 220, 230, 240 V

3-phase 220, 380, 415 V

Maximum electric power consumption: 1 kVA

Long type Short type

Lower thread trimmer

L1 14 – 18 mm L 5 28 – 32 mm L2 18 – 22 mm L 6 32 – 36 mm L3 22 – 26 mm L 7 36 – 40 mm L4 26 – 30 mm

Sewing shape

Eyelet buttonhole Straight buttonhole

0793Q

Eyelet buttonhole

0794Q 0795Q

Eyelet buttonhole with

taper

RH-9800

Straight buttonhole

0796Q

Straight buttonhole

with taper

Page 9

3. INST ALLATION

CAUTION

3.INSTALLATION

Machine installation should onl y be carried out by a qualified technician.

Contact your Brother dealer or a qualified electrician for any electrical work that may need to be d one.

The sewing machine weighs more than 87 kg. The installation should be carried out b y two or more people.

Do not connect the power cor d until installatio n is complete, otherwise the machine may operate if the start switch is pressed by mistake, which could result in injury.

All cords should be sec ured at least 25 mm awa y from any moving parts. Furthermore, do not excessively bend the cords or secure them too firmly staples, otherwise there is the danger that fire or electric sh ocks cou ld o ccur.

Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric shock, and problems with correct operation may also occur.

Install the belt covers to the machine head and motor.

3-1. T able processing diagram

Use the special table indicated below.

Thread trimmer Upper thread trimmer 127-980-000-01

Upper and lower thread trimmer 127-980-001-01

If using a commercially-available table, process it as shown in the illustration below. Note: The thickness of the table should be at least 50 mm , and it should b e strong enough to be ar the weight and

vibration of the sewing machine.

Product code

RH-9800

2011Q

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3. INSTALLATION

3-2. Installing the motor

(1)

(3) (4)

(2)

1. Insert the three bolts (1) into the work table.

2. Turn the work table upside down to make it easier to install the motor (2).

3. Align the motor (2) with the bolts (1), and then install the motor (2) to the under side of the work table with the three washers (3) and the three nuts (4). Note: Do not use the cushion rubber. If you use it, V

belt tension cannot be adjusted.

1098Q

3-3. Installing the machine head

(8)

(3)

(4)

(5)

(3) (4)

(5) (2)

(1)

(9)

(6)

(7)

1099Q

1. Insert the accessory bed stand cushions A (1) into the bed stand, and then place the machine head on top of the work table. Note: When placing the machine head on top of the work table, have two or more people there to hold the handles A

and B and the rear of the head C.

2. Open the front cover (2), and then use the bed stand m ounting bolt (3), washer (4), cushioni ng rub ber (5), bed stand cushion A (1), large washer (6) and nut (7) to attach the front right corner of the bed stand to the work table.

3. Open the rear cover (8), and then attach the bed s tand to the work table in two places inside t he stand in the same way as in step 2. above.

4. Remove the fixing bolt (9) and the washer. Note: The fixing bolt (9) and washer should be kept, as they will be needed again if the machine head is moved.

5. Raise the machine head, and then attach the front left corner of the bed stand to the work table in the same way as in the steps above. Note: Make sure that steps 2. to 4. above have been completed before raising the machine head.

(1)

(6)

(7)

0808Q

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Raising the machine head

(2)

(3)

(1)

(4)

(5)

3.INSTALLATION

(2) (3)

When machine head is lowered

(1)

When machine head is raised

0810Q0809Q

1. While holding the handles of the machine head (1) with both hands, gently raise the machine head. Note: Be sure to turn the power supply off before raising the machine head.

2. If you wish to keep the machine hea d in the ra ised position, ins ert the head sup port lever (2) securel y into the hinge lever support shaft (3).

Note: Always check that the head support lever (2) and the hinge lever support shaft (3) are meshed.

Lowering the machine head

Pull the machine head do wn t o ward you gently, remove the head support lever (2) from the hinge le ver supp or t s haft (3), and then gently lower the machine head. Note: Do not hold the machine head by the feed bracket (4) or X feed shaft A (5) when it is being raised and

lowered.

3-4. Installing the oil container

0811Q

(5)

(1)

1. Install the oil draining c ap support (2) to the base of the bed stand (1) with the two screws (3).

2. Screw the oil container (4) into the oil draining cap support (2).

3. Push the oil draining spring pin (5) into the bed stand (1) until the pin is flush with the surface of the stand.

4. Lower the machine head. (Refer to "Lowering the machine head" above.)

0812Q

(1) (5)

(3)

(2) (3)

(4)

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Page 12

3. INSTALLATION

3-5. Installing the spool stand

(1)

(2)

0815Q

3-6. Tightening the V -belt

1. To assemble the spool stand (1), follow the instructions in the manual that came with the spool stand (1).

2. Secure the spool stand (1) to the rear right corner of the work table with the washer and nut (2).

(1)

(9)

1198Q

(10)

(6)

(7)

0.1N

Approx. 10 mm

(8)

(2)

(3)

(1)

(1) (5)

(4)

(9)

Motor pulley

(7)

1100Q 1101Q

1. Open the rear cover.

2. Pass the V-belt (1) through the base of the bed stand and through the hole in the work table.

3. Loosen the two screws (2) and then remove the motor pulley cover (3).

4. Place the V-belt (1) onto the motor pulley (4).

5. Check that there is approximat ely 10 mm of defle ction in the V-belt (1) when it is pushed in the middle with a load of 0.1 N. If the tightness needs adjusting, loosen the two nuts (5) and move the motor up or down.

6. Install the belt casting prevention bracket (8) to the pulley cover (3) with the wing bolt (6) and washer (7). Align the center of the washer (7) with the gradation (7) 0 shown on the outside of the pulley at this time.

7. Provisionally tighten the winding prevention bar (9) to the pulley cover (3) with the wing bolt (10).

8. Install the pulley cover (3) and tighten it with the two screws (2). Note: Check that the V-belt is not touching the belt casting prevention bracket (8).

9. Align the winding prevent ion bar (9) with the point in between the V-belt and the motor pulle y, and then secure it by tightening the wing bolt (10).

Check that the winding prevention bar (9) does not touching the V-belt or the motor pulley.

Note:

After a long period of use, the V-belt will bec ome run in and will loosen around the m otor pulle y. When this

happens, turn off the power and adjust by the procedure given in step 5. above.

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3-7. Installing the control box

(5) (2)

(3) (4)

(1)

1102Q

3.INSTALLATION

1. Align the four bolt hol es in the c ontrol box ( 1) with the four holes in the work table.

2. Install the control box (1) wit h the f our bolts (2), spring washers (3) and flat washers (4)

3. Push the four caps (5) in over the top of the bolts (2).

3-8. Installing the air unit and the valve assembly

Refer to the work table processing diagram on page 3 for the installation position.

(6) (3)

(7)

No. 15

No. 16

(4)

(5) (1)

(2)

1103Q

12-pin connector

No.6 (black)

No.4 (black)

1. Install the air unit (1) to the underside of the work table with the two screws (2).

2. Install the valve assembly (3) with the two screws (4).

3. Connect air hose No. 15 to the intermediate joint (5) of the air unit (1) and to the joint (6) of the valve assembly (3), and connect air hose No. 16 to joints (7) and (8).

Black cable

Black cable 12-pin connector

(8)

Connecting the knife valve cables

Connect the two black knife valve cables to terminal No.4 and No.6 of the 12-pin connector of the air harness.

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Page 14

3. INSTALLATION

3-9. Connecting the ground wires and the wirings

1106Q

(2)

(7) (3)

(1)

(4)

(6)

(5)

1104Q

1105Q

Power switch installation position

1. Connect the foot controller cable (1) and the motor cable (2) to the control box.

2. Install the power switch (3) to the underside of the work table with the two screws (4).

3. Clamp the foot controller cable (1) with the two cable clips (5) and then secure the cable clips (5) with the screws (6).

4. Install the motor cable (2) and the power switch cable to the underside of the work table with the staple (7).

1107Q 1109Q

(16)

(12) (1 1)

(16)

(13)

(10)

(8) (9)

(17)

Whi te

Blue Black Whi te

Whi te

(19)

(17)

Needle position sensor

6P 6P 6P

12P

(18)

(10)

(15)

(14) (15)

1110Q 1111Q1108Q

5. Pass the cable and air tube which are coming out of the feed bracket (8) and the left side of the bed stand (9) through the cable hole (10) in the work table.

6. Pass the cable and air tube which are coming out of the belt cover (11) and the machine head (12) through the cable hole (13) in the work table.

7. Insert each of the connectors into the connectors on the control box. (Refer to the illustration above.)

8. Pass the cables and air hoses through the two cable holders (14), and then sec ure the cable holders (14) to the underside of the work table with the two screws (15).

9. The ground wires (16), (17) should always be connected to the control box.

10.Connect the accessory ground wire (18) to the ground terminal of the control box and to the table leg installation bolt.

Note: If the ground wire is not connected, mis-operation due to discharges of static electricity may occur.

1 1. Connect the power switch connector (19) to the motor.

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Page 15

< -02 >

3.INSTALLATION

Right/left cloth presser No. Right/left movable knife No. Thread handler No.

11 22 33 44

No.10

(1)

Label No.

(7)

(6) (4)

No.

(3)

(2)

(5)

Specification

Label No. of

harness

L1 L2 L3 L4

L5 5 5 L6 6 6 L7 7 7

1112Q

1113Q

Insert the harness (L1 - L7) (1) to connector No. 10 (9-pin).

* When connecting the harness (1), check that its label number is the same as the numbers on the right m ovable

knife (2), left movable k nife (3), thread handl er (4), right cl oth presser (5), lef t cloth presser (6) and movable k nife driving cam (7). ( If a connec tor with a dif fe rent label n um ber is inserted, the m ac hine coul d be dam aged or thr ead trimming errors could result.)

* There is 10 mm of difference in the knife installation positions between L1 - L4 and L5 - L7.

3-10. Connecting the air tubes

Connect the air tubes to the joints of the solenoid valve assembly, using the illustration below as a reference. Numbers are marked on each of the air hoses which come out of the sewing machine.

Plug 4

0827Q

Label No.

5 4 3

2 1

*1 If the lower thread trimmer is not

installed, solenoid valve [3] is not used.

*2 The sub presser can only be used

for machines with -02 s pecif ication.

Solenoid valve

Upper thread trimming

Upper thread tightening

Lower thread trimming *1

Cloth spreading (Sub presser *2)

Cloth presser

< -00,-01 >

0826Q

< -02 >

0828Q

0829Q

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Page 16

3. INSTALLATION

3-11. Installing the air hoses

Connect the air hose from the compressor to the air unit underneath the work table.

1. Turn the nut (1) at the end of the air hose, and then connect the hose to the valve (2).

2. Open the air cock (3) on the compressor.

(3)

(2)

Open

Closed

(1)

(3)

Check that there is no air leaking from the valve connection.

3. Open the cock (3) by turning it in the d irection of the arrow . The meter needle will move clockwise.

4. Adjust the air pressure by following the procedure on the next page.

0834Q

0835Q

Adjusting the air pressure

Set the air pressure for the knife press ure adjustm ent regulator (3) to the lo west pressure at whic h the k nife can still c ut the material. Set the standard air pressure for the main regulator (1) to 0.5 MPa.

T o increase the air pressure

1. Gently lift the knob (2) of the main regul ator (1) and

(2)

(0.5 MPa)

To decrease the air pressure

(2)

To close

(5)

T o loosen

(0.5 MPa)

T o tighten

(1)

(6)

(0.3 MPa)

(1)

(4)

(3)

0836Q

(4)

(3)

(0.3 MPa)

0837Q

turn it in the direction of the arrow in the illustration. The pressure will increase when the knob (2) is turned clockwise.

2. Gently lift the knob (4) of the knife pressure adjustment regulator (3) and turn it in th e dir ection of the arrow in the illustration. The pressure will increase when the knob (4) is turned clockwise. * The pressure for the knife pressure adjustment

regulator (3) is adjus ted to 0.3 MPa. Be c areful not to increase this pressure needlessly, otherwise poor cutting performance or damage to the knife may r e su l t .

1. Close the cock (5). (The needle will remain at the high pressure position.)

2. Turn the knob screw (6) in the direction of the arrow in the illustration to loosen it. Make sure that you turn it in the correct direction. The air will escape fr om the reservoir and the needle will drop.

3. Tighten the knob screw (6).

4. To reduce the air pres sure, gen tl y lift knob (2) or knob (4) and turn it counterclockwise.

5. Open the cock (5). Air will enter the r eservoir and t he needle will move

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Page 17

3-12. Connecting the power cord

CAUTION

Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done. Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious

electric shock, and problems with correct operation may also occur. Do not connect the power cord u ntil installation is complete, otherwise the m achine may operate if the start

switch is pressed by mistake, which could result in injury.

3.INSTALLATION

Single phase

(1)

Green and yellow wire (ground wire)

0839Q

1114Q

1. Attach an appropriate plug to the power cord (1). (The green and yellow wire is the ground wire.)

2. Insert the plug into properly-grounded AC power supply . Note: Do not use extension cords, otherwise

machine operation problems may result.

Three phase

(1)

Green and yellow wire (ground wire)

0840Q

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Page 18

4. LUBRICATION

CAUTION

Turn off the power switch before starting lu bricating, otherwise the machine m ay operate if the start switch is pressed by mistake, which could result in injury.

Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto your skin, otherwise inflammation can result. Furthermore, do not drink the oil or eat the grease under an y circumstances, as they can cause vom iting and diarrhoea. Keep the oil out of the reach of children.

Use only specified Brother oil (Nisseki Mitsubishi Sewing Lube 10 N; VG10) for the machine oil.

4-1. Adding oil

Check the oil level by looking at the sight glass. If the oil level is low, replenish the oil supply.

Filling the arm oil tank Filling the bed base oil tank

(1)

(2)

0859Q 0860Q

1. Pour approximatel y 10 cc of m ac hine oil into t he arm oil tank (1) (until it is about four-fifths full).

1. Raise the machine head.

2. Pour approximately 20 cc of machine oil into the bed base oil tank (2) (until it is about four-fifths full).

3. Lower the machine head.

4-2. Lubrication

Oil these parts once a day. Oil the moving parts of the ne edle bar, looper and spreader m ec hanism s and also th e cam groove, rol ler, the felt at the base of the wick and the wick before using the sewing machine for the first time, and also after long periods of non-use. When oiling, some oil will get o nto the threa d. Carr y out a test s ewing to e nsure that your m aterial does not get stained with oil.

Oiling the needle bar and cam

Add 2-3 drops of oil in the places indicated by the arrows.

0861Q

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Page 19

Oiling the looper, spreader and race stand <Removing the cloth presser plates>

1116Q

(3)

4.LUBRICATION

(6)

(4)

(2)

(A)

(10)

(4)

(8)

(5)

(1)

(9)

(7)

0862Q

1117Q

1. Turn the upper shaft pulley (1) tow ard you until the mark on the p ulley (A) is ali gned with the notch in the pulley cover (2).

2. Move the feed bracket (3) toward you.

3. Turn the left and right plate pressers (4) in the directions indicated by the arrows.

4. Lift up the clamp lever (6) and the notched section (7) of the right cloth presser plate (5), remove the right cloth presser plate (5) from the pin (8), and then pull the right cloth presser plate (5) toward you to remove it. Note: If the lower thread trim mer has been installed, m ove cloth presser plate U (9) to a posi tion where it can be

removed without its touching the needle. Raise cloth presser plate U (9), pass the needle t hrough the h ole, and then rem ove c loth press er plat e U (9) from the pin (8).

5. Remove the left cloth presser plate (10) in the same way as the right cloth presser plate (5) was removed.

0868Q

(18)

(17)

(13)

0866Q1118Q 1119Q

(1 1)

(12)

(16)

(15)

(14)

6. Open the front cover.

7. Turn the race stand and add a few dro ps of oil to t he spread er c am (11), and to the supports for the loo per link (12)

and spreader link (13).

8. Add a few drops of oil to the shafts of the right spreader (14), left spreader (15) and LS-holder bracket (16).

9. Fill the felt tank (17) on the race stand with oil also.

10.Add 5 - 6 drops of oil to the felt (18) which is attached to the sliding surfaces of the race stand and the bed.

1 1.Close the front cover.

12.Install the cloth presser plates by carrying out the steps 5., 4. and 3. in that order.

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Page 20

5. CORRECT USE

5-1. Initializing settings

The following procedure shou ld be carried o ut before the se wing machine is us ed for the firs t time, and also after lon g periods of non-use. If "E-59" appears on the front panel displ ay when the p ower is turned on, be sur e to follow this proc edur e to initia lize all settings. ("E-59" will appear after a PROM has been replaced or after long periods of non-use. For details on the "E-59" message display, refer to page 27.)

1. Turn off the power .

2. Remove the five screws (1).

3. Open the rear plate (2) of the control box.

4. Set DIP switch No. 1 (3) on the circuit board to ON.

5. Turn the power back on again. Note: A buzzer will sound while the data is being

initialized.

(2)

(1)

(3)

(2)

1120Q

6. Turn off the power .

7. Set DIP switch No. 1 (3) on the circuit board to OFF.

8. Close the rear plate (2) and tighten the five screws (1).

5-2. Changing the lower thread and gimp trimming

The sewing machine is set to lower thread and gimp trimming when it is shipped from the factory. (DIP switch No. 6 (3) is set to ON.) Carry out the following procedure only if you wish to activate upper thread trimming.

1. Turn off the power .

2. Remove the five screws (1).

3. Open the rear plate (2) of the control box.

4. Set DIP switch No. 6 (3) on the circuit board to OFF. Note: Do not activate lower thread trimming if using

a 39-mm cutter. Do not set DIP switch No. 6 (3) on the circuit board to ON.

5. Close the rear plate (2) and tighten the five screws (1).

(1)

(3)

(2)

1121Q

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Page 21

5-3. Checking the direction of machine operation

0862Q

(2)

(A)

(1)

5. CORRECT USE

1124Q

(4)

(6)

(5)

(3)

(8)

(7)

(9)

1122Q

(10)

1123Q1116Q

1. Turn the upper shaft pulley (1) toward you until the mark (A) on the pulley (1) is aligned with the notch in the cover (2).

2. Press the power switch (3) to turn on the power. The power indicator will illuminate and the TROUBLE indicator will flash.

3. Press the RESET button (4). The TROUBLE indicator will switch off and the feed bracket (5) will move to the cloth setting position.

4. Press the MODE button (6) to switch to automatic mode. The AUTO mode indicator will illuminate.

5. Depress the cloth presser switch (7). The cloth presser (8) will be lowered.

6. Depress the start switch (9). The machine will sew one buttonhole and will then stop. * If the buzzer makes a beeping sound and "E-89" appears on the front panel display, the direction of operation of the

upper shaft is reversed. Press the power switch (3) to turn the power off, and then switch over the top and bottom motor connectors (10).

7. The direction of machine operation will now be correct.

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Page 22

5. CORRECT USE

5-4. Installing the needle

Turn off the power switch before installing the needle, otherwise the m achine ma y operate if the start switch is pressed by mistake, which could result in injury.

CAUTION

Use only Schmetz D0 x 558 Nm80 – Nm120 needles.

1. Raise the finger guard (1).

2. Loosen the screw (2), and then remove the needle (3).

3. Insert the new needle (3) as far as it will go so that the

4. Securely tighten the screw (2).

5. Remove the cloth presser plates. (Refer to page 13.)

6. Lower the finger guard (1).

0871Q

0872Q

(2)

(3)

(1)

(5)

(4)

0873Q

5-5. Threading the upper thread

CAUTION

Turn off the power switch before threading the thread, oth erwis e the m achine may operate if the start switch is pressed by mistake, which could result in injury.

groove is facing toward you.

Note: After removing the cloth presser plates, check

that the index mark (4)on the machine head is aligned with the index mark (5) on the race stand before inserting the needle (3) (when the race stand is turned fully to the right).

Thread the upper thread as shown in the illustration below. * Use the accessory needle threader (1).

0875Q

(1)

0878Q0877Q1125Q

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Page 23

5. CORRECT USE

5-6. Threading the lower thread

Remove the cloth presser plates (refer to page 13), and then thread the lower thread as shown in the illustration below.

For upper thread trimming specifications (-00)

0880Q

0879Q

For upper and lower thread trimming specifications (-01, -02)

0881Q

0883Q

0882Q

0881Q

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Page 24

5. CORRECT USE

5-7. Threading the gimp

Remove the cloth presser plates (refer to page 13), and then thread the gimp as shown in the illustration below. Once threading is complete, replace the cloth presser plates.

<-00, -01>

0884Q

<-02>

0885Q

(1)

Pass the gimp through the hole o the thread tension stud (1).

Refer to “9-17. Adjusting the gimp length after trimming (-02)” (Page 54).

0886Q

5-8. Setting the material

(2)

(1)

10 - 30 mm

(2)

(1)

(2)

(1) (2)

0889Q

1. Insert the material so that it touches the right and left cloth guides (1).

2. The sewing margin can be adjusted to within 10 - 30 mm.

3. Loosen the screws (2) at left and right and move the cloth guides (1) back and forth to adjust the sewing margin.

0890Q

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Page 25

6. USING THE OPERATION PAN EL AND FRONT PANEL

USING THE OPERA TION P ANEL AND FRONT P ANEL

6-1. Panel button and switch names

Operation panel part names

POWER indicator

TROUBLE indica to r

RESET button

Program number display window

CYCLE PROGRAM indicator

PROGRAM NUM B ER but ton

Front panel part name

AUTO mode Indicator FEED mode indicator

MANUAL mode indicator

BEFORE indicator

OFF indicator

FTER indicato

KNIFE butto n

PROGRAM mode indicator MODE button

1126Q

(A) SPEED indicator

(B) EYELET P ATTERN indicator

(D) TACKING LENGTH indicator

(E) OFFSET indicator

(F) STITCH P ITCH ind i cator

(G)No. OF

STITCHES indicator

(H) CUTTING

SP ACE

indicator

(I) KNIFE

POSITION indicator

RH-9800

(M) SELECT b ut ton

(K) “Down” button

(J) Front panel display

(L) “UP” button

(N) ENTER button

1127Q

Page 26

6. USING THE OPERATION PAN EL AND FRONT PANEL

If the power is turned on and the RESET switch is then pressed, the feed bracket will move to the cloth setting position. Operations such as selec ting a program num ber, changing the operation mode and selecting the cutting method can then be carried out.

6-2. Selecting a program number

A maximum of nine different eyelet shapes can be programmed.

1. Press the PROGRAM NUMBER button (1). (Check which of the mode indicator illuminates.)

In automatic, feed or m anual mode, the program numbers are displayed in the program number

(2)

display window (2) in t he f ollo wing order each time the button is pressed.

→ 1→ 2

Note: If cycle programs have been input, the

sequence will be as follows:

→ 1 → 2 9→ → → →

(1)

6-3. Changing the mode

(1)

1128Q

1019Q

( indicates a cycle program.)

* In programming mode, the program numbers are

displayed in the program number display window (2) in the following order each time the button is pressed.

→ 1 → 2

1. Press the MODE button (1). * The mode changes in the following order each time

the button is pressed. → AUTO → FEED → MANUAL → PROGRAM

Automatic mode is used for normal sewing.

Feed mode is used to move the f eed bracket with

out sewing in order to check component positions. Use the Manual mode to check the machine operation when sewing by turning the upper shaft pulley by hand. Programming mode is used when setting programs.

9 → C

6-4. Changing the cutting timing

When "BEFORE" (cuttin g before sewing) is selecte d, the knife operates before the buttonhole is sewn. When "OFF" (no cuttin g) is selected, the knife does not operate. When "AFTER" (cutting after sewing) is selected, the knife operates after the buttonhole is sewn.

1. Press the KNIFE button (1).

(1)

1129Q

RH-9800

* The cutting timing changes in the following order

each time the button is pressed. →BEFORE → OFF → AFTER

Page 27

6-5. Setting a program

6. USING THE OPERATION PAN EL AND FRONT PANEL

1130Q 1131Q

(3)

(2) (1)

(J)

(K)

(L)

1. Push the section on the front panel marked "PUSH" to open the front panel.

2. Press the MODE button (1) to switch to programming mode. Programming will not be possible unless the PROGRAM indicator is illuminated. * The SPEED indic ator (A) will illum inate and the

current sewing speed appear on the front p anel display (J).

3. Press the PROGRAM NUMBER button (2) until the desired program number appears in the program number display window (3).

4. Press the SELECT button (M) to select a letter from "A" to "P4." * The character displayed changes in the following

order each time the button is pressed. →A→ B

(M)

(A)

(K)

(M)

(N)

1132Q

1133Q

(J)

(L)

(N)

Then make the required settings by follo wing steps 5. and 6. below.

5. Press the "Up" button (L) or the "Down" button (K) to change the setting value. * When the setting value is changed, the numerals

appearing in the display will flash.

6. Press the ENTER button ( N) to accept the changed value. * The display will stop flashing. Note: If you press the SELECT button (M) or the

MODE button (1) while the display is still flashing, the setting value will not be changed.

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Page 28

6. USING THE OPERATION PAN EL AND FRONT PANEL A.Setting the sewing speed

1. The sewing speed can be set to between 1000 - 2000 rpm in 1 1 100-rpm step s.

2. Press the "Up" button (L) or the "Down" button (K) to set the desired sewing speed. * When the setting value is being changed, the

numerals appearing in the display will flash.

3. Press the ENTER button (N) to accept the new sewing speed setting. * The display will stop flashing.

1134Q

1135Q

(N)(L)(K)

B.Setting the shape of the eyelet

1. The eyelet can be set to one of five different shapes in accordance with the different shapes of knife. The No. 2 knife is installed as the default knife for standard specifications.

2. Select the same eyelet number as the number of the knife which is being used.

3. Press the "Up" button (L) or the "Down" button (K) to set the desired eyelet shape.

1136Q

1137Q

(N)(L)(K)

* When the setting value is being changed, the

numerals appearing in the display will flash.

4. Press the ENTER button (N) to ac c ept the ne w eyelet shape setting. * The display will stop flashing.

C.Setting the buttonhole length

<-00, -01>

1. The buttonhole can be set to a length of between 10 and 38 mm (10 to 50 mm with no looper thread trimmer) in steps of 1 mm. Note: You cannot set the buttonhole length to a

value that would make the difference between the buttonhole length and the tacking length less than 7 mm.

2. Press the "Up" button (L) or the "Down" button (K) to

1138Q

(K)

(L)

(N)

1139Q

set the desired buttonhole length.

* When the setting value is being changed, the

numerals appearing in the display will flash.

3. Press the ENTER button (N) to accept the new buttonhole length setting.

* The display will stop flashing. <-02> The setting range is limited by the machine specifications (L1 - L7). Example: For L1 specifications

1. The buttonhole can be set to a length of between 14 - 18 mm in steps of 1 mm.

Note: You cannot set the buttonhole length to a value that would make the difference between the buttonhole length

and the tacking length less than 7 mm.

2. Press the "Up" button (L) or the "Down" button (K) to set the desired buttonhole length.

* When the setting value is being changed, the numerals appearing in the display will flash.

3. Press the ENTER button (N) to accept the new buttonhole length setting.

* The display will stop flashing.

The buttonhole lengths for L2 - L7 specifications can also be set in steps of 1 mm.

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Page 29

D.Setting the tacking length

1140Q

E.Setting the offset

1142Q

6. USING THE OPERATION PAN EL AND FRONT PANEL

1. The tacking length can be set to b etween 3 and 43 mm in steps of 1 mm.

2. If not adding tacking, set the tacking length to "0" . If this is done, it will not be possible to set a value for the

offset. Note: You cannot s et the tacking length to a value

that would make the difference between the buttonhole length and the tac king length less than 7 mm.

1141Q

3. Press the "Up" button (L) or the "Down" button (K) to set the desired tacking length. * When the setting value is being changed, the

numerals appearing in the display will flash.

4. Press the ENTER button (N) to accept the new tacking length setting. * The display will stop flashing.

1. The offset can be set to between 0.5 and 2 mm in steps of 0.1 mm. * The offset s hould normally be set to h alf the stitch

width. If a tacking length that is outside the 0 - 3 mm range

Stitch width

is set, it will be set back to 1.5 mm automatically.

2. Press the "Up" button (L) or the "Down" button (K) to set the desired offset. * When the setting value is being changed, the

1143Q

numerals appearing in the display will flash.

3. Press the ENTER button (N) to ac cept the ne w offset setting. * The display will stop flashing.

Example: If the stitch width is 3 m m, s et the offset to

3 mm ÷ 2 = 1.5 mm. However, fine adjustments to this value may be necessary depending on the material and/or the thread tension.

F. Setting the s titc h pi tc h

1. The stitch length can be set to between 0.5 and 2 mm in steps of 0.1 mm.

2. Press the "Up" button (L) or the "Down" button (K) to set the desired stitch length.

(K)

(L)

* When the setting value is being changed, the

numerals appearing in the display will flash.

3. Press the ENTER button (N) to accept the ne w stitch length setting. * The display will stop flashing.

1144Q

(N)

1145Q

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Page 30

6. USING THE OPERATION PAN EL AND FRONT PANEL G. Setting the number of eyelet stitches

1. The number of eyelet stitches can be set to between 4 and 20 stitches in steps of 1 stitch.

2. Press the “Up” button ( L) or the "Down" button (K) to set the desired number of eyelet stitches.

(K)

(L)

* When the setting value is being changed, the

3. Press the ENTER button (N) to ac c ept the ne w eyelet stitch number setting. * The display will stop flashing.

1146Q

(N)

1147Q

H. Setting the cutting space

1. The cutting space can be set to bet ween -0.3 and 0 .5 mm in steps of 0.1 mm. Note: You can not set the cutting space to a value

(K)

(L)

2. Press the “Up” button (L) or the " Do wn" button (K) to

(N)

set the desired cutting space. * When the setting value is being changed, the

1148Q

1149Q

3. Press the ENTER button (N) to accept the new cutting space setting. * The display will stop flashing.

numerals appearing in the display will flash.

that would make the difference between the knife position compensation and the cutting space less than -0.7 mm.

numerals appearing in the display will flash.

I. Setting the knife position compensation

(K)

(L)

(N)

1150Q 1151Q

1. The knife position compensation can be set to between -0.7 and +0.7 mm in steps of 0.1 mm. * If you would like to move the knife closer to the

seam, set to a negative value; if you would lik e to move it away from the seam, set to a positive value.

Note: You cannot set the knife position

compensation to a value that would m ak e the difference between the knife position compensation and the cutting space less than

-0.7 mm.

2. Press the "Up" button (L) or the "Down" button (K) to set the desired knife position compensation. * When the setting value is being changed, the

numerals appearing in the display will flash.

3. Press the ENTER button (N) to acc ept the new knife position compensation setting. * The display will stop flashing.

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Page 31

P1. Setting X correction

(K)

(L)

(N)

1152Q

P2. Setting Y correction

(K)

1154Q 1155Q

6. USING THE OPERATION PAN EL AND FRONT PANEL

1. The setting range is from 1 to 6 in steps of 1. * Set to a larger va lue if you would lik e to move the

eyelet seam to the right (when seen from the finished side, or the reverse side when sewing).

2. Press the “up” button (L) or the “down” button (K) to set the X correcti on va lue. * When the setting value is changed, the value

displayed will start to flash.

1153Q

3. Press the ENTER button (N) to accept the X correction setti ng. * The display will stop flashing and will start

illuminating steadily.

1. The setting range is from 1 to 6 in steps of 1. * Set to a larger va lue if you would lik e to move the

right-side seam further forward (when seen from

(L)

the finished side, or the reverse side when sewing).

2. Press the “up” button (L) or the “down” button (K) to set the Y correcti on va lue.

(N)

* When the setting value is changed, the value

displayed will start to flash.

3. Press the ENTER button (N) to accept the Y correction setti ng. * The display will stop flashing and will start

illuminating steadily.

P3. Setting θ

1156Q

correction

(K)

(L)

(N)

1157Q

1. The setting range is from -3 to 3 in steps of 1. * Set to a larger value if you would like to rotate the

seam which is not part of the eyelet clockwise (when seen from the finished s ide, or the reverse side when sew i ng ).

2. Press the “up” button (L) or the “down” button (K) to set the θ

correction value.

* When the setting value is changed, the value

displayed will start to flash.

3. Press the ENTER button (N) to accept the θ correction setti ng. * The display will stop flashing and will start

illuminating steadily.

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Page 32

6. USING THE OPERATION PAN EL AND FRONT PANEL

P4. Setting θ

correction

(K)

1158Q 1159Q

(L)

(N)

1. The setting range is from -3 to 3 in steps of 1. * Set to a larger value if you would like to rotate the

eyelet seam clockwise (when seen from the finished side, or the reverse side when sewing).

2. Press the “up” button (L) or the “do wn” button (K) to

correction value.

set θ

* When the setting value is changed, the value

displayed will start to flash.

3. Press the ENTER button (N) to accept the θ correction setting. * The display will stop flashing and will start

illuminating steadily.

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Page 33

6. USING THE OPERATION PAN EL AND FRONT PANEL

6-6. Using the memory switch

The conditions of the memory switches are memorized even if the power is OFF, however, if data of the memory switches are initialized, the memory switches will be returned to their initial settings (factory default settings).

(J)

(K)

(M)

1160Q

(L)

(N)

(1)

1. While pressing the SELECT button (M), press the power switch to turn on the power. * The two left-side colum ns of the front panel display (J) are the memory switch num ber, and the two right-side

columns show the memory sw itch settin g (or va lue).

2. Press the SELECT button (M) to select the desired memory switch number. * The setting range is from 00 to 99. However, numbers in unused ranges are skipped.

3. Press the “UP” button (L) or “DOWN” button (K) to select the desired memory switch number. * For m emory switches which can be s et to ON or OFF, press the "UP" button (L) to set to "On", and press the

"DOWN" button (K) to set to "OF". "On" represents ON, and "OF" represents OFF.

4. Press the ENTER button (N) to store the memory switch setting.

5. Press the MODE button (1). * The TROUBLE indicator will flash and the sewing machine will go to normal standby mode.

No. Contents Setting range

00 Bar tacking at th e sewing sta rt to prevent fr aying

Number of stitches for memory switch No. 00

* Does not appear when memory switch No. 00

is set to OFF.

02 Bar tacking at the sewing end to prevent fraying

Number of stitches for memory switch No. 02

* Does not appear when memory switch No. 02

is set to OFF.

Work clamp operation selection when feed bracket is at front position

(Set to OFF if the cutting block m ay strike the Wor k c lamp. )

OFF: Disabled ON: Enabled 01: 1 stitch 02: 2 stitches 03: 3 stitches OFF: Disabled ON: Enabled 01: 1 stitch 02: 2 stitches 03: 3 stitches

OFF: The work clamp passes underneath the cutting

block, then rises and moves forward.

ON: The work clamp rises and then moves

forward.

OFF: Same speed as speed A set at the front panel.

05 Eyelet buttonhole sewing speed setting

ON: Different speed from speed A set at the front

panel.

Speed for memory switch No. 05 (If the speed is set to a higher value than

speed A that has been set at the front panel,

the speed will not exceed speed A.) * Does not appear when memory switch No. 05

10: 1,000rpm, 11: 1,100rpm, 12: 1,200rpm, 13: 1,300rpm, 14: 1,400rpm, 15: 1,500rpm, 16: 1,600rpm, 17: 1,700rpm, 18: 1,800rpm, 19: 1,900rpm, 20: 2,000rpm

is set to OFF.

1019Q

Initial

value

OFF

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Page 34

6. USING THE OPERATION PAN EL AND FRONT PANEL

No. Contents Setting range

Y direction offset for return seam to prevent

thread breakage Sewing end pitch for buttonhole taper to

prevent fraying

OFF: No offset ON: Offset by 1/ 2 pit ch OFF: No change

ON: Change No. of stitches before pitch chan ge for m emory switch No. 08

* Does not appear when memory switch No. 08

01: 1 stitch, 02: 2 stitches, 03: 3 stitches,

04: 4 stitches, 05: 5 stitches

is set to OFF. No. of stitches after pitch change for memory switch No. 08

* Does not appear when memory switch No. 08

is set to OFF.

11 Test feeding speed

Speed for memory switch No. 11 * Does not appear when memory switch No. 11

is set to OFF.

13 Knife operation (BEFORE/OFF/AFTER) setting 14 Special lapel cutting device

Button hole sensor (Special lapel cutting

device) Timer for checking lowering of cutting block

(Timer for determining if cutting block is lowered) Time fo r memory sw i t ch N o. 1 6

* Does not appear when memory switch No. 16

is set to OFF. Changing cutting block ON time

* Disabled (always "OFF") when memory

switch No. 16 is " ON" Time fo r memory sw i t ch N o. 1 8

* Does not appear when memory switch No. 18

is set to OFF. Timer for checking raising of cutting block (Timer for determining if the cutting block has

been raised to a position where it will not touch the next feed bracket to operate) Time fo r memory sw i t ch N o. 2 0

* Does not appear when memory switch No. 20

is set to OFF.

01: 1 stitch, 02: 2 stitches, 03: 3 stitches, 04: 4 stitches, 05: 5 stitches, 06: 6 stitches, 07: 7 stitches, 08: 8 stitches, 09: 9 stitches

OFF: Standard speed ON: Low speed 20: 20% of standard speed 35: 35% of standard speed 50: 50% of standard speed OFF: Setting not possible within cycle program ON: Setting possible within cycle program OFF: Disabled

ON: Enabled OFF: Disabled ON: Enabled

OFF:Disabled (Determined from slit signal

stopping)

ON: Enabled (Determined by timer) 42: 420 ms, 45: 450ms, 48: 480ms,

51: 510ms, 54: 540 ms OFF: Disabled (25 ms)

ON: Enabled 05: 50 ms, 10: 100ms,

15: 150ms, 20: 200 ms OFF: Disabled (Determined from number of slit

signals)

ON: Enabled (Determined by timer) 15: 150ms, 20: 200 ms, 25: 250ms,

30: 300ms, 35: 350ms, 40: 400ms,

45: 450ms, 50: 500ms Cutting block raising check timer (Raised position of the cutting block is determined from the num ber of s lit signals , a nd

timer is updated)

OFF: Disabled

ON: Enabled * Disabled (always "OFF") when memory

switch No. 20 is " ON"

Time fo r memory sw i t ch N o. 2 2

* Does not appear when memory switch No. 22

is set to OFF.

Setting tacking length to 0 for straight t acking

specifications

05: 50 ms, 10: 100ms, 15: 150ms,

20: 200 ms, 25: 250ms, 30: 300ms,

35: 350ms, 40: 400ms

OFF: Disabled

ON: Enabled

Spare - -

Initial

value

OFF OFF

OFF

OFF OFF

OFF

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Page 35

6. USING THE OPERATION PAN EL AND FRONT PANEL

6-7. List of error codes

If the buzzer sounds and an error code starting with "E" appears in the front panel display, check according to the table below. Codes E-00 to E-16 are errors which are displayed when the power is turned on. Codes E-30 to E-59 are resetting errors which are displayed before operation and after the EMERGENCY STOP switch is pressed. Codes E-60 to E-89 represent errors which occur during operation.

Code Explanation Resetting method

E-00 EMERGENCY ST OP sw i tch wa s presse d. E-02 Machine head is raised (safety switch is off). Turn off the power . E-03 Cloth presser switch was pressed.

E-04 Start switch was pressed. E-05 RESET button was pressed. Turn off the power . E-09

E-10 Needle bar is not at the highest position. E-12 Cutting block is lowered. Turn off the power .

E-15 Lower thread and gimp trimming knife does not retract. Turn off the power . E-16 Upper thread trimming knife does not retract. Turn off the power.

E-30 EMERGENCY ST OP sw i tch wa s presse d. E-32 Machine head is raised (safety switch is off). Turn off the power . E-35 RESET button was pressed.

E-40 Needle bar has not been raised. E-42 Cutting block is lowered. Turn off the power .

E-45 Lower thread and gimp trimming knife does not retract. Turn off the power . E-46 Upper thread trimming knife does not retract. Turn off the power. E-50 X axis is not at the home position. Turn off the power . E-51 Y axis is not at the home position. Turn off the power . E-52 E-59 Sewing data has been corrupted (checked for each program). Turn off the power .

E-60 EMERGENCY ST OP sw i tch wa s presse d. E-62 Machine head is raised (safety switch is off). Turn off the power. E-69 Needle bar does not stop at the highest position. E-70 Needle up signal does not turn on and off during operation. Turn off the power.

E-71 Needle down signal does not turn on and off during operation. Turn off the power. E-72 Cutting block operation is incorrect. Turn off the power . E-75 Lower thread and trimming operations are incorrect. Turn off the power . E-76 Upper thread operation is incorrect. Turn off the power .

E-80 E-81 E-82

E-89 Machine operation direction is reversed. Turn off the power . E-91 Pulse motor overcurrent Turn off the power .

Sewing specifications changeover harness and stitch length changeover harness and PROM version do not match.

θ axis is not at the home position

When the feed brack et returns to the hom e position, the X axis is not at the home position. When the feed bracket returns to the home position, the Y axis is not at the home position.

When the feed brack et returns to the home pos ition, the θ axis is not at the home position.

Press the EMERGENCY STOP switch once more and then press the RESET butto n.

Release the cloth presser switch and then press the RESET button. Release the start switch and then press the RESET button.

Turn off the power . Raise the needle to the needle up position

and then press the RESET button.

Press the EMERGENCY STOP switch once more and then press the RESET butto n.

Turn off the power and then press the RESET button. Raise the needle to the needle up position and then press the RESET button.

Turn off the power .

Press the RESET button (to interrupt) or the start switch (to continue).

Raise the needle to the needle up position and then press the start switch (to continue).

Turn off the power . Turn off the power . Turn off the power .

Note: Errors E-50, E-51 and E-52 are not errors to be reset after the EMERGENCY STOP switch is pressed.

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Page 36

7. SEWING

Make sure you know where the EMENRGENCY STOP switch is and how it is used before operating the sewing machine.

7-1. Using the EMERGENCY ST OP s witc h

(1)

(2)

(L)(K)

(4)

(3)

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1162Q

In automatic mode

1. Press the EMERGENCY STOP switch (1). * All machine operations will stop and the buzzer will sound. The TROUBLE indicator will illuminate and "E-60" will

appear on the front panel display at this time.

2. Eliminate the cause of the problem. * The machine will not always stop in the needle up position if the EMERGENCY STOP switch (1) is pressed during

sewing. Turn the upper shaft pulley by hand to raise the needle to the needle up position (so that the marks are aligned).

* The feed bracket (2) can be moved back and forth at this time by pressing the "up" button (L) and "Down" button

(K).

3. T o continue sewing, press the start switch (3). * The TROUBLE indicator will switch off, the "E-60" will be cleared from the front panel display and sewing will begin

again. To stop sewing, press the RESET button (4).

* The TROUBLE indicator will switch off, the "E-60" will be cleared from the front panel display and the feed bracket

will return to the cloth setting position.

In manual mode or in automatic mode

1. Press the EMERGENCY STOP switch (1). * All machine operations will stop and the buzzer will sound. The TROUBLE indicator will illuminate and "E-60" will

appear on the front panel display at this time.

2. Eliminate the cause of the problem.

3. Press the RESET button (4). * The TROUBLE indicator will switch off, the "E-60" error code will be cleared from the front panel display and the

feed bracket will return to the cloth setting position.

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7-2. Sewing

CAUTION

Turn off the power switch at the following times, otherwise the machine may operate if the start switch is pressed by mistake, which could result in injury.

When threading the needle When replacing the needle When not using the machine and when leaving the machine unattended

Do not touch any of the moving parts or press any objects against the machine while sewing, as this may result in personal injury or damage to the machine.

When carrying out automatic sewing for the first time, be sure to carry out a test sewing first.

7. SEWING

(1)

(2) (3) (4) (6) (5) (7)

1164Q

1. Press the power switch (1) to turn on the power. * The POWER indicator will illuminate and the TROUBLE indicator (2) will flash.

2. Press the RESET button (3). * The TROUBLE indicator (2) will switch off and the feed bracket will move to the cloth setting position. * If the buzzer sounds and "E-10" appears on the front panel display (J) at this time, turn the pulley to set the needle

to its upper position, and press the RESET button (3).

3. Press the PROGRAM NUMBER button (4) to select the desired program number. (Refer to page 20.)

4. Press the MODE button (5) to switch to automatic mode. * The AUTO indicator (6) will illuminate.

5. Press the KNIFE button (7) to select cutting before sewing, OFF (no cutting) or cutting after sewing. (Refer to page 20.)

6. Place the material to be sewn under the cloth presser and press the cloth presser switch (8) to lower the cloth presser, and then release the cloth presser switch (8).

7. Press the start switch (9). Sewing will then start.

8. When sewing is finished, the cloth presser will be raised. T o repeat this operation, repeat steps 6. and 7. above. Note: After you have finished the machine and have turned the power off, the previous sewing data will still be

retained in memory even when the power is turned back on again. Thus you can continue with the same type of sewing.

(8) (9)

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Check the thread tension after sewing. Refer to the following page.

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Page 38

7. SEWING

7-3. Adjusting the thread tension

Turn off the power . Never adjust the thread tension while sewing.

Woolen materials + wool gimps

Denim (3 layers) Upper thread tension 0.9 N 1.0 N Lower thread tension 0.3 N 0.8 N

Thread take-up spring tension 0.05 N 0.07N

Thread take-up spring stroke 8 mm 8 mm

Upper and lower thread # 30 polyester # 30 cotton

* If you change the type of material being used, it may be necessary to change the thread tension. The upper thread tension gi ve n abo ve is the tens io n when the upper thr ead is pulled out fr om the thread path hole of

the thread take-up lever, and the lower thread tension is when the lower thread is pulled out from the needle hole in the throat plate.

Upper thread tension Lower thread tension

(2)

(1)

0933Q

Turn the upper thread tension adjus tment knob (1) in the direction indicated by the arrow to increase the uppe thread tension.

Turn the lower thread tension adjustment k nob (2) in the direction indicated by the arrow to increase the lower thread tension.

Adjusting the lower thread take-up spring tension and strok e

Tension adjustment

Loosen the screw (3) and turn t he thread take-up spring support (4) in the direction indicated by the arrow to

(5) (7)

(6) (3) (4)

0935Q

increase the tension of the spring (5).

Stroke adjustment

Loosen the screw (6) and turn t he thread take-up spring guide (7) in the direction indicated by the arrow to increase the stroke of the spring (5).

0934Q

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Page 39

7. SEWING

)

7-4. Needle and knife position

The feed bracket is ele ctronically controlled by means of pul se motors. It is not necessary to change the position of the kni fe when switchin g between cuttin g before sewing and cutting aft er sewing. It is not necessary to change the needle do wn position in order to keep enough space for cutting when c utting after sewing has been selected.

Relationship between knife position and eyelet shape

a c

b d

Cutting shape (a X b)

Straight section

Knife

elet shape (c X d

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1. When cutting before sewing, the inside needle down position must be aligned accurately with the straight line section of the e yelet (when the c utting space H is

0). This is set correctl y at the time of shipment from the factory.

2. The shape of the eyelet is automatically changed according to the shape of the knife for cutting before and after sewing and for no cutting.

Eyelet shape (c X d)

Cutting before sewing

or off (n o cutting)

Cutting af ter se w ing

Knife No.

Cutting shape

(a X b)

1 2.1 X 3.2 1.9 X 2.8 2.4 X 3.9 2 2.8 X 4.3 2.4 X 3.9 3.3 X 4.6 3 3.0 X 4.6 3.2 X 4.1 3.6 X 4.8 4 3.2 X 5.4 2.8 X 4.7 3.6 X 6.1 5 Straight Straight Straight 6 3.8 X 4.3 3.2 X 3.6 4.0 X 4.5

3. At the time of shipment, the installation position for the knife is adjusted to the position shown in the illustration at left (when the c utting space H and the knife position compensation value I are "0").

(When cutting before sewing) (When cutting after sewing)

Explanation of the cutting space function

When cutting after sewing, this function mo ves the outer needl e down positions in accordance with the knif e shape so that the seam is not cut by the knife.

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Cutting space

1. W hen cu tting after se wing, set th e cu tting space H to an appropriate value so tha t the sea m is not cut by the knife. * The cutting space H should generally be set to

around 0.2 - 0.3. (Refer to page 24 for details on the setting method.)

* The knife position c ompensation value I shoul d be

set to "0". Refer to "H. Setting the cutting space" and "I. Setting the knife position compensation".

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7. SEWING

Knife position compensation function

1166Q

This function moves the k nife with resp ect to the s eam in order to ensure that distances a and a' are equal.

a’

Knife position

compensation

a’

1. When cutting before sewing, the difference between a and a' will change depending on the cloth opening amount.

2. Set the knife position compensation value I so that the two are equal. (Move the knife to the positive direction (+) when increasing the cloth opening amount. Refer to "I. Setting the knife position compensation" on page 24.)

a < a’ a = a’

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7. SEWING

7-5. Using the production counter

The production counter is initially set to the counting up from zero method. It can display up to a maximum count of 9999. * If DIP switch No. 4 inside the front panel is set t o OFF, the counting up from zero method will be used. If DIP switch

No. 4 is set to ON, the counting down to zero method will be used.

Standar d p osition (C oun ting u p from zer o meth od)

Displaying the production counter

(J)

(1)

1019Q

Resetting the production counter

(N)

1169Q

(2)

Reset position (Co unting dow n to ze ro met hod)

1168Q

1. Press the MODE button (1) to switch to automatic mode. * The production counter will appear in the front

panel display (J).

Counting up from zero method

1. Press the MODE button (1) to switch to automatic mode.

2. Press the ENTER button (N). * The units digit will start flashing in the display.

3. Press the RESET button (2). * The units digit will change to "0" and the counter

value will be reset to "0".

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Counting down to zero method

1. Press the MODE button (1) to switch to automatic mode.

2. Press the ENTER button (N). * The units digit will start flashing in the display.

(K)

(L)

(N)

1172Q

Note: If the counting down to zero method is used, further sewing will not be possible when the production counter

reaches "0", so a number greater than zero should always be set. The production counter can be returned to the initial setting value simply by pressing the ENTER button (N).

* If you would lik e to change the production counter setting due to sewing errors, use the counti ng down to zero

setting procedure to set the production counter.

3. Press the "Up" button (L) or the "Down" button (K) to set the value for the units colum n, and then press the ENTER button (N). Repeat this step for the tens, hundreds and thousands columns. * The production counter function can be stop ped b y

setting counter to “0000”.

* When the thousands column has been set, the

machine will return to normal automatic mode.

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7. SEWING

7-6. Using a cycle program

This example shows the procedure for a cycle program which runs pro gr am 1 (with the knife operating) thr ee t imes and program 3 (with the knife not operating) once.

(K)

(1)

(J)

(1)(2)

(L)

(N)

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Programming procedure

1. Press the MODE button (1) to switch t o programm ing mode.

2. Keep pressing the SELECT button (2) until " C " appears in the program number display window. * The number in the thousands column of the f ront

panel display (J) will start flashing at this time.

3. Press the "Up" button (L) or the "Down" button (K) to change the value in the thousands colum n to "1 ", and then press the ENTER button (N). * Program number 1 will now be set, and the dot in

the thousands column will flash.

4. Change the flashing interval so that the illumination time for the dot is longer than the switched-off time. * Press the "Up" button (L) t o make the illuminated

period longer, and press the "D own" button (K) to make the illuminated period shorter.

5. Press the ENTER button (N). * The dot in the thousands column will illuminate

steadily and the number in the hundreds column will start flashing.

* When the dot is illum inated, the knife will operate,

and when the dot is s witched off, the k nife will not operate. However, if the OFF indicator illuminates during sewing, the knife will not operate even if the dot is illuminated.

6. Repeat steps 3. to 5. for the hundreds and tens columns.

7. Press the "Up" button (L) or the "Down" button (K) to change the value in the units c olumn to "3", and then press the ENTER button (N). * Program number 3 will now be set, and the dot in

the units column will flash.

8. Change the flashing interval so that the illumination time for the dot is shorter th an the switched-off time, and then press the ENTER button (N). * The dot in the units column will s witch off and the

number in the thousands column will start flashing.

9. Press the MODE button (1) to switch to automatic mode. The cycle program "1.1.1.3" will then be set.

1176Q1177Q

* If you want to clear a cycle program, carry out steps 1. and 2. above and then press the RESET button. Then press the

MODE button (1) to switch to automatic mode.

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Page 43

7-7. Setting the feed bracket to the front position

Setting the material will be easier if the feed bracket is moved forward from the standard cloth setting position. * Cycle time will be reduced with this setting, particularly if cutting after sewing is selected.

7. SEWING

1178Q

1. Turn off the power .

2. Set DIP switch No. 3 inside the front panel.

3. Turn on the power.

4. Press the RESET button (1).

5. The feed bracket will move to the front position.

6. Sewing can then be carried out as normal. (Refer to page 30.)

(1)

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1180Q

7-8. Switching between single-pedal and dual-pedal operation

(Switching the foot controller)

The cloth presser can be lowered and th e mac hine can start sewing just b y pressing the start switch, without hav ing to use the cloth presser switch.

1181Q

1179Q

1. Turn off the power .

2. Change the setting of DIP switch No.5.

OFF: To use both pedals (cloth presser switch and

start swit ch)

ON: To use only one pedal (start switch)

3. Turn on the power and press the RESET button (1).

Sewing can then be carried out as normal. Note: During single pedal operation, when the start

switch is pressed, the cloth presser is lowered and sewing starts straight away.

(1)

1180Q

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Page 44

7. SEWING

7-9. Using feed mode

In this mode, the feed bracket and the cloth presser can be moved while the needle is stopped. It is useful for checking the relative positions of the throat plate and the cloth presser.

(5)

(J)

(4)

(K) (L)

(6) (1)

(2)

(3)

1182Q

1183Q

1. Press the MODE button (1) to switch to feed mode. * "FEEd" will appear in the front panel display (J).

2. Press the cloth presser switch (2). The cloth pressers will be lowered.

3. Press the start switch (3). The feed bracket (4) will move to the sewing start position. * When the start switch (3) or the "Up" button (L) is pressed, the feed bracket (4) will move to the next sewing

position. * If the "Down" button (K) is pressed, the feed bracket (4) will move to the previous sewing position. * To return the feed bracket (4) to the cloth setting position while sewing:

1) Press the EMERGENCY STOP switch (5).

2) Press the RESET button (6). Note: The knife will not operate during this time.

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Page 45

7. SEWING

7-10. Using manual mode

In this mode, the needle and the f eed bracket can be moved one stitc h at a time by turning the upper s haft pulley by hand. It is useful for checking the positions of the needle and the looper after the looper timing has been adjusted.

(6)

(4)

(5)

(J)

(1)(7)

(2) (3)

0783Q

0784Q

1. Press the MODE button (1) to switch to manual mode. * “H- ” will appear in the front panel display (J). ( represents the number of stitches remaining.)

2. Press the cloth presser switch (2). The cloth presser will be lowered.

3. Press the start switch (3). * The knife will operate only when cutting before sewing has been set. * The feed bracket (4) will move to the sewing start position.

4. Turn the upper shaft pulley (5) toward you. The feed bracket (4) will move to the next sewing position in accordance with the rotation of the upper shaft. Note: If the upper shaft pulley (5) is turned in the wrong derection, the feed bracket timing may become disrupted. * To return the feed bracket (4) to the cloth setting position while sewing:

1) Press the EMERGENCY STOP switch (6).

2) Press the RESET button (7). The feed bracket (4) will then return to the cloth setting position.

5. Turn the upper shaft pulley (5) until the last stitch has been sewn. The buzzer will then sound. Note: Check that the mark on the upper shaft pulley (5) is aligned with the notch in the pulley cover.

6. Press the start switch (3). * The movement of the feed bracket (4), lower thread trimming and opration of the cloth presser will all be carried out

as a single step.

* The knife will operate only when cutting after sewing has been selected.

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Page 46

7. SEWING

7-11. Changing the cyc le program counter

The cycle program counter can be easily changed if necessary, for instance because re-sewing was necessary .

1185Q

1. If carrying out cycle sewing in AUTO mode, switch the contents shown in the front panel display from the production counter to the cycle program.

(J)

The program number which is to be sewn next will flash in the display. To change the cycle program counter (the position where the display is flashing), press the "up" button (L) or the "down" button ( K) to make the desired setting. * If you would like to switch the display from the cycle

(L)(K)

program to the production counter, press the SELECT button (M). The production cou nter will be displayed while this switch is being pressed.

(M)

1186Q

7-12. Setting the number of home position cycles

The number of home position cycles can be set in order to shorten the overall cycle time. * This function is only valid when DIP switch No. 8 on the circuit board is set to ON.

(1)

1187Q

1. Press the MODE button (1) to switch to program mode.

2. Press the SELECT button (M) so that "HP" is displayed in the front panel display. * The dis play will change in the fo llowing order each

time the SELECT button is pressed: →A → B

P4 → HP

(Continued on next page)

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Page 47

(J)

(K)

(M)

(L)

(N)

1189Q

7. SEWING

3. Press the "up" button (L) or the "down" button (K) until the desired number of home position cycles is displayed. The setting range is between 0 and 9. * If the num ber of home position cycles is set to "5",

returning to the home position will occur once for every five cycles.

However, when carrying out cycle sewing, the

machine will return to the home position once for each cycle program regardless of the number of home position cycles whic h have been set (unless the setting is "0").

Normal home position c ycling will n ot be c arried out

if the setting is "0".

4. Press the ENTER button (N) to accept the home position cycle setting. This setting will apply to all program numbers from 1 to 9. * The display will stop flashing and will start

illuminating steadily.

Note: If for some reason an excessive load is applied to the feed bracket which causes it to slip, then there is the

danger that this will have an adverse effect on subsequent sewing operations. Therefore, it is recommended that you return to the home position for each cycle (i.e. that you leave DIP switch No. 8 on the circuit board set to OFF).

7-13. Returning to the home position

This is useful for correction pur poses when m istim ing occ urs in the hom e position c ycle because r e-sewing was car ried out. * This function is only valid when DIP switch No. 8 on the circuit board is set to ON.

1. When at the home position in AUTO mode, press the RESET button (1) to start sewing from the home position.

(1)

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Page 48

8. CLEANING AND MAINTENANCE

CAUTION

Turn off the power switch before starting any cleaning work , otherwise the machine may operate if the start switch is pressed by mistake, which could result in injury.

8-1. Cleaning

If using an air gun, do not use it while the machine head is tilted back, otherwise oil and thread scraps may adhere to the cutter sensor and timing belt, resulting in operating problems.

0848Q

1. Turn off the power .

2. Turn the air cock to stop the air. * Turn the knob to release the air.

3. Remove any thread scraps and dust, etc. from the thread paths for the needle thread, looper thread and gimp. In particular, the looper thread path should be cleaned every day to keep it free from thread scraps and dust.

4. Check the oil level by looking at the sight glass. If the oil level is low, replenish the oil supply.

5. Remove and discard any oil that has collected in the oil container.

6. Check the air filter and remove any water that has collected in the drain. (Refer to the illustration below.)

8-2. Draining the oil 8-3. Checking the air filter

(1)

1190Q

(2)

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0946Q

1. When the oil container (1) is full of oil, rem ove the oil container (1) and let the oil drain out. Note: Clean up any oil that may have been spilt onto

the floor.

RH-9800

1. Close the air cock (1).

2. Turn the screw (2) to release any air a nd water in the drain.

Page 49

9. ST ANDARD ADJUSTMENTS

CAUTION

9. STANDARD ADJUSTMENTS

Maintenance and inspection of the sewing machine should only be carr ied out by a qualified technician.

Ask your Brother dealer or a qualified electrician to carry out any maintenanc e and inspection of the electrical system.

When carrying out inspection, adjustm ent and maintenance. When replacing consum able parts s uch as the loopers and knife.

Disconnect the air hoses from the air supply and wait for the needle on the pressure gauge to drop to "0" before carrying out inspection, adjustment and repair of any parts which use the pneum atic equipment.

If the power switch and air need to be left on when carrying out some adjustment, be extremely careful to observe all safety precautions.

If any safety devices have been removed, be absolutely sure to re-install them to their original positions and check that they operate correctly before using the machine.

9-1. Adjusting the height of the spreader and looper

Spreader height

The clearance between the left s preader ( f ork ed s preader ) and th e l eft looper must be set to matc h the thic kness of the lower thread. The clearance between the right s preader and the right looper s hould be as small as possible while still letting the parts slide.

(2)

(5)

(3)

(7)

0947Q

1. The right spreader (1) and left spreader (2) move by means of springs (3). Adjust so that the spreaders move smoothly between the right spreader stopper (4), the left spreader stopper (5) and the LS-holder bracket (6), with no looseness.

2. If adjustment is necessary , loosen the screw (7) and then move the right spreader stopper (4) or left spreader stopper (5) up or down.

(1)

(4)

(3)

(7)

(2)

(3)

(5) (6)

0948Q

Looper height

0949Q

(2)

(8)

(10)

(9)

(10)

(1)

0950Q

1. Set the clearance between the left looper (8) and the left spreader (2) to the same distance as the thickness of the lower (looper) thread.

2. The clearance between the right looper (9) and the right spreader (1) should be as small as possible.

3. If adjustment is necessary , loosen the screw (10) and then move the left looper (8) and right looper (9) up or down.

RH-9800

Page 50

9. STANDARD ADJUSTMENTS

9-2. Adjusting the needle and looper timing

The distance by which the needle bar rises from its lowest position to the position where the tip of the left looper and the center of the needle are aligned should be the same as the distance from its lowest position to the position where the tip of the right looper and the center of the needle are aligned. Before adjusting the looper timing, first adjust the stitch width (needle racking width). * Refer to "Adjusting the needle racking width (stitch width)" on page 48. The standard width is 3 mm.

Lowest position of needle bar

When center of needle and looper tip are aligned

(1)

(2)

0951Q

(3) (4)

0952Q

(3)

(5)

0953Q

1. Move the needle bar to its lowest position.

2. Use calipers to measure the distance between the end of the needle bar (1) and the top of the needle bar bracket (2) when the needle bar is at its lowest position.

3. Turn the upper shaft pulley until the tip of the left looper (4) and the center of the need le (3) are aligned when the needle (3) is at the inside sewing position, and then use the calipers to take the same measurement as taken in step 2. Find the difference between the measurements taken in this step and in step 2.

4. Follow the same procedure as in step 3. above to find the difference between the two measurements when the needle (3) is at the outside sewing position. * When the needle (3) is at the inside sewing position, the tip of the left looper (4) should be aligned with the center of

the needle (3), and when the needle (3) is at the outside sewing posit ion, the tip of the right looper (5) should be aligned with the center of the needle (3).

* The distance from the end of the needle bar (1) and the top of the needle bar bracket (2) should be the same when

the needle (3) is at both the inside sewing position and the outside sewing position.

(9)

(8)

(7) (6)

0954Q

0955Q

5. If adjustment is necessar y, turn the race stand (6) in the direction indicated b y the arro w in the i llustrati on, loos en the screw (7), and then move the looper link support (8) up or down to tilt the LS-holder bracket (9) to the left or right (in the direction of the arrow).

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Page 51

9. STANDARD ADJUSTMENTS

9-3. Adjusting the loop stroke

The loop stroke is the dis tance t he needl e bar rises fr om its lowest posit ion t o the posit ion where th e tips of the left and right loopers are aligned with the cen ter of the ne edle. The s tandard loop s trok e is 2.7 m m. (The loop str oke m a y need changing depending on the material and thread being used.) * Carry out the adjustment in "9-2. Adjusting the needle and looper timing" before making this adjustment.

(1)

(2)

(A)

2.7 mm

(B)

0956Q

1. In the same way as in "9-2. Adjusting the needle and looper timing", move the needle bar to its lowest position with the needle at the inside sewing position, and then use calipers to measure the distance between the end of the needle bar (1) and the top of the needle bar bracket (2).

2. Add 2.7 mm to the value obtained in step 1. above.

3. T ouch the end of the calipers (A) against the top of needle bar bracket (2), and then turn the upper shaft pulley until the end of the needle bar (1) touches the edge of the c alipers (B). Check that the t ip of the left looper is al igned with th e center of the needle at this time.

4. In the same way, check that the tip of the right looper is aligned with the center of the needle when the needle is at the outside sewing position.

(3)

(6)

(5)

(4)

0957Q

5. If the tips of the loopers are not aligned with the center of the needle, carry out the adjustment below. Raise the machine head. Loosen the two screws (3) of the lower shaft timing pulley , hold the upper shaft pulley so that it doesn't move, and then turn the lower shaft cam (4) in the direc tion indicated by the ar row until the ti p of the left looper ( 5) is alig ned with t he center of the needle (6). Once they are aligned, tighten the two screws (3). After adjusting, check that the screws have been adequately tightened. Once this adjustment has been carried out, repeat the procedure given in "9-2. Adjusting the needle and looper timing".

RH-9800

0958Q

Page 52

9. STANDARD ADJUSTMENTS

9-4. Adjusting the height of the needle bar

The standard height for the needle bar is 2.5 mm. (The needle bar height may need changing depending on the material and thread being used.)

(4)

(2)

(5)

(1)

(3)

2.5 mm

(6)

2.5 mm

0959Q

0960Q

0961Q

1. Align the tip of the left looper (1) with the center of the needle (2) when the needle (2) is at the inside sewing position.

2. Remove the face plate.

3. Loosen the screw (3) of the needle bar clamp (5) and adjust the height of the needle bar (4). * After aligning the tip of the left looper (1) with the top edge of the needle hole, lower the needle bar (4) 2.5 mm.

4. Adjust so that there is as little play as possible, and so that the needle bar clamp (5) and the needle bar horizontal link (6) can maintain their oil films. This will help to ensure that the needle bar turns smoothly.

9-5. Adjusting the clearance between the looper and needle

Be sure to carry out this adjustment after changing the size of the needle. The clearance between the tip of the looper and the needle should be 0.05 - 0.2 mm.

0.05 - 0.2 mm

(1)

0962Q

1. Loosen the looper screw (1) and then adjust the clearance. * This clearance must be uniform while the race stand is rotating (through 360

). If the clearance is not unif orm , adj us t the turning c enter f or the needle bar. (This adjustm ent is made at the time of shipment from the factory.)

* After making the adjustment in step 1. above, carr y out the adjustment procedure given in "9-7. Adjusting the

spreader mounting positions".

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0963Q

Page 53

9. STANDARD ADJUSTMENTS

9-6. Adjusting the needle guard

Be sure to carry out this adjustment after changing the size of the needle. The needle must remain stationary with respect to the needle guard until the tip of the looper reaches the needle.

1. Loosen the screw (1) and then move the needle guard

(2)

(3) (1)

0964Q

(3) in the directions indicated by the arrows by an appropriate amount in accordance with the thicknes s of the needle (2). Note: Adjust so that the looper clasps the upper

thread securely.

(2)

(1)

(4)

(3)

(6)

(5)

(8)

(7)

0965Q

9-7. Adjusting the spreader mounting positions

1. Loosen the screw (3) and adjust the position of the left s preader st opper (4) so that the fork of the left spreader (1) is aligned with the lower thread guide hole of the left looper (2).

2. Loosen the screw (7) and adjust the position of the right spreader stopper (8) so that the tip of the right spreader (5) is aligned with the tip of the right looper (6). Note: Both the left spreader (1) and right spreader (5) should be installed so that they do not project past the tips of

the left looper (2) and right looper (6) respectively.

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Page 54

9. STANDARD ADJUSTMENTS

9-8. Adjusting the spreader timing

When the needle is at the insi de sewing position, the left spreader should touch the left spreader stopper and stop immediately before the needle bar reaches its lowest position. When the needle is at the outside se wing position, the right stopper should t ouch the right spreader stopp er and stop immediately before the needle bar reaches its lowest position.

1. Raise the machine head.

2. Loosen the screw (1) and the nut (2), and then turn the adjusting screw (3) to adjust the spreader timing.

3. After adjusting, tighten the nut (2) and the screw (1).

(2) (3)

(1)

0966Q

9-9. Adjusting the needle racking width (stitch width)

The needle racking width is set to 3 mm at the time of shipment from the factory .

2 mm

Becomes smaller

Becomes larger

(2) (1)

Neddle racking width 1.5 - 3.2 mm

0967Q

1. Loosen the needle racking adjustment nut (1) and then adjust the needle racking width by sliding the adjustment screw (2) vertically along the oval slot. The stitch width becomes smaller as the adjustment screw (2) is moved upward. Note: If the needle r acking width is c hanged greatly, you should re- adjust the timing bet ween the needle and th e

loopers. (Refer to "9-2. Adjusting the needle and looper timing".)

3 mm

0968Q

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Page 55

9. STANDARD ADJUSTMENTS

9-10.

0969Q

1. Grind or replace the cutting block after changing the knife cutting length. * When replacing the cutting b lock with a new one, be sure to adjust the co ntact between the k nife and the c utting

2. Loosen the screw (1), and then remove the cutting block (2). Because the knife cutting le ngth is set in accordanc e with the length of the cutting block, grind the cutti ng block as shown in (A ) in the above illustration. Cutting block length A = Knife cutting length + 1.5 mm

3. When installing the cutting block, push in the pin (3) and then tighten the screw (1). * Do not use knives with different numbers on the same cutting block. If knives with different numbers are used,

Changing the knife cutting length (Replacing the cutting block)

Illustration (A)

(1)

(3)

(2)

block. (Refer to the next page.)

accurate cutting will not be possible and the knife will be damaged.

0970Q

Changing in the cutting block operation time.

If cutting is not poss ible even when the air press ure is increased to 0.3 MP a, memory switch No. 18 can be used to increase the cutting block ON time. (Refer to “6-6. Using the memory switch”.)

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Page 56

9. STANDARD ADJUSTMENTS

9-11.

1. Knife incision

is correct

Adjusting the contact between the knife and the cutting block

1. Remove the cutting block. (Refer to the previous page.)

2. If the knife incision on the surface of the cutting block is very deep, if there are two or m ore incisions on the cutting block because differ ent knives wer e used, or if only part of the incision has been made, grind the surface of the cutting block smoothly until a single knife incision can still be seen faintly.

3. The cutting pressure over the whole of the cutting block should be uniform so that the material will be cut cleanly. Grind the surface of the c utting bl ock so that the knif e incision will be uniform over the whole of the cutting block. * The c utting block can be filed until its height is 19

mm.

4. If the material c an not b e c ut c lean ly even though the cutting block has been ground correctly, check whether t he ti p of th e k nife is worn. * If the tip is worn, replace the knife.

Do not use the old cutting block after the knife has been replaced, otherwise it may damage the tip of the knife.

19 mm

3 mm

2. Knife incision is too deep

3. Two knife incisions

0971Q

4. P art ial k nif e incision

0972Q

Adjusting the contact between the knife and the cutting block

T o see the knife incision more easily , color the cutting surface of the cutting block with a marker pen.

1. Operate the cutting block three times with the knife making a mark on it each time.

2. Adjust the position of the cutting block or contact bet ween the knife and the cutting block until the knif e consistently makes a mark in the same place.

Filing the cutting surface of the cutting block

Use a flat file for filing.

1. Filing the cutting surface of the cutting block on which the knife incision breaks off or is shifted 1-1. Grip the cutting block in a vise. 1-2. File the surface of the cutting block smoothly until the knife incision is eraced away.

2. Filing the cutting surface of the cutting block in which knife incision is deep 2-1. Grip the cutting block in a vise. 2-2. File the surface of the cutting block smoothy until a single knife incision can still be seen faintly.

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Page 57

9. STANDARD ADJUSTMENTS

9-12. Replacing the knife

When replacing the knif e with a new one, file t he surface of the cutting block until sm ooth and until the k nife does not leave a mark on the cutting block. Before replacing the knife, be sure to check that there is no gap between the knife (1) and the knife stopper (2).

(1)

(2)

(L 1 - L 4 )

0973Q

1. Loosen the screw (3), and then remove the knife (1).

2. Insert the new knife (1) into the knife stopper (2), and then tighten it with the screw (3).

3. Adjusting the contact between the knife and cutting block. (Refer to the previous page.) Note: For L1 - L4 specifications, secure the knife stopper (2) in the position closest to you (the position indicated by the

dotted lines).

* When replacing the knife (1), make sure that the knife number matches the number for the eyelet shape.

Replace the knife and cutting block as a set. If knives with different numbers are used on the same cutting block, accurate cutting will not be possible, and damage to the knife may result.

(3)

0974Q

9-13. Adjusting the cutting pressure

Adjust the cutting pressure to the minimum pressure that still allows the material to be cut. * If the knife cutting length is 20 mm, sufficient cutting performance can be obtained with an air pressure of 0.2 MPa.

To adjust the cutting pressure, adjust the air pressure of the knife pressure adjustment regulator (1) which is mounted underneath the work table.

* If the cutting pressure is increased to more than is

necessary, it will cause the cutting block to become

(1)

worn or the knife to become damaged.

* If the m aterial cannot be cut cleanly, do not increas e

the cutting pressure over the maximum limit. Check the contact between the knif e and the cutting block, while referring to "9-11. Adjusting the contact between the knife and the cutting block".

0975Q

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Page 58

9. STANDARD ADJUSTMENTS

9-14. Adjusting the cloth opening amount

(1)

(2)

(1)

(2)

0976Q

0977Q

1. Loosen the screw (1), and then insert a screwdriver into the notch in the side of the feed bracket and turn the adjusting screw (2) to adjust the opening amount.

2. After tightening the screw (1), measure the opening amount. Note: Adjust so that the opening amounts for the left and right cloth presser plates are equal.

* It is usually sufficient for one cloth presser plate to open by 0.8 mm.

Measuring the opening amount

(1)

(2)

0978Q

1. Switch the mode to feed mode. (Refer to page 20.)

2. Lower the cloth presser and then use calipers to measure the distance a.

3. Press the start switch. The feed bracket will move and then the left and right cloth presser plates will open.

4. Use calipers to measure the distance b.

5. The difference between a and b is the opening amount. (Opening amount = a - b)

(1)

(2)

0979Q

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Page 59

9. STANDARD ADJUSTMENTS

9-15. Adjusting the trimming of the upper thread

The upper thread should be trimmed at the correct time after sewing is completed.

<-00, -01>

1. Adjust so that the upper thread trimm er knife (1) cuts only one of the threads in front of the right looper (2). Note: If both strands of the thread loop are cut, the

thread remaining in t he needle may becom e too short and skipped stitches may result.

(1)

(2)

0980Q

<-02>

1. Adjust so that the upper thread tr immer knife (3) cut only one of the threads in front of the right looper (4). Note: If both strands of the thread loop (forward and

back) are cut, the thread remaining in the needle may become too short and skipped stitches may result .

(3)

(4)

0981Q

9-16. Adjusting the trimming of the lower thread and gimp

<-00, -01> The lower thread and g imp should be trimmed at th e correct ti me after the feed brac ket has returned to the home p osition. Thread trimming operation can be checked in step s while manual mode is active. (Refer to “Using manual mode” on page 39.)

(6)

(1)

(4) (2)

(4)

(2)

(8)

(3)

(5)

(7)

0982Q

1. The mechanism is adjusted so that the lower thread and g imp are separated from each other and spread by the loop spreader (1).

2. The lower thread is held between thread nipper M (2) and thread nipper D (3) on the plate spring. The gimp is held between thread nipper M (2) and thread nipper U (4) on the plate spring.

3. Adjust so that the edge of the fixed knif e (6) and the index m ark (8) on the m ovable knife (7) are alig ned when the thread trimmer knife arm (5) is at the maximum stroke.

(6)

(7)

0983Q

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Page 60

9. STANDARD ADJUSTMENTS <-02>

The lower thread and gimp should be trimmed at the correct time after the cloth pressers rise at the feed home position. Thread trimming operatio n can be check ed in steps while m anual mode is active. (Refer to “Using manual mode” on page 39.)

1. The mechanism is adjusted so that the lower thread and gimp are spread by the thread handler (1).

2. The movable knife dr iving cam (2) operates, and the right movable knife (3) and left movable knife (4) mesh

(1)

and the thread is cut.

(4)

(2)

(3)

0984Q

9-17. Adjusting the gimp length after trimming (-02)

Approx. 4 mm

0985Q

(1)

(2)

(3)

Becomes shorter

Becomes longer

Adjust so that approxim ately 4 mm of the gim p thread is coming out from the throat plate (1).

1. Loosen the screw (2) and move the gimp thread guide J (3) in the direction of the arrow to adjust the length.

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Page 61

9-18. Lower thread presser (-02)

The lower thread presser (1) operates at the sam e time as upper thread trimming is carried out. The end of the lower thread is securel y held bet ween the lower thread presser (1) and the throat plate (2).

(2)

(1)

0986Q

9-19. Sub presser (-02)

Trimming of the lower thread and gimp is carried out when the cloth pressers rise. The sub presser (1) endures that the material does not move during thread trimming, in order to maintain a stable thread length after trimming.

(1)

9. STANDARD ADJUSTMENTS

0987Q

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Page 62

10. SUMMARY OF DIP SWITCHES

10. SUMMARY OF DIP SWITCH ES

Always turn off the power supply before changing any of the DIP switch settings.

10-1. Front panel DIP switches

No. ON/OFF Description

ON Program mode disabled

OFF Program mode enabled

ON Sp are

OFF Spare

ON Front position

OFF Back position

ON Counting down to zero

OFF Counting up from zero

ON Pedal 1 operation

OFF Pedal 2 operation

ON Compatible with normally closed-type emergency stop switch (new)

OFF Compatible with normally open-type emergency stop switch (old)

ON Upper thread remaining amount = Large

OFF Upper thread remaining amount = Standard

ON Sp are

OFF Spare

*1 The version of the PROM is given as “E1” or later. *2 The version of the PROM is given as “D1” or later. *3 The version of the PROM is given as “F1” or later. If the position of DIP switch No. 4 is changed, the production counter will be reset to zero. * The machine is shipped from the factory with the DIP switches set as follows.

1192Q

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Page 63

10. SUMMARY OF DIP SWITCHES

10-2. Circuit board DIP switches

D ANGER

Wait at least 5 minutes after turning off the po wer switch and disconnectin g the po wer cor d f r om the wall ou tlet before opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury.

The ON/OFF positions of the DIP switches inside the front panel are checked only once when the power is turned on. Any changes to the DIP switch positions will not be effective until the power is switched off and back on again. Only one of DIP switch No.1, 2 and 3 is effective at any one time. They are effective in the order 1, 2, 3.

No. ON/OFF Description

ON Data initialization

OFF Normal

ON Input check

OFF Normal

ON Output check

OFF Normal

ON Upper gimp guide present

OFF Upper gimp guide not present

ON Upper thread nipper present

OFF Upper thread nipper not present

ON Upper and lower thread trimming

OFF Upper thread trimming

ON Material is remains pressed after sewing

OFF Material is released after sewing

ON Needle bar returns to home position after set number of pieces sewn

OFF Needle bar always returns to home position after each piece sewn

*1 The version of the PROM is given as “E1” or later. *2 The version of the PROM is given as “D1” or later. If the stitch length has been set to 39 mm or greater, it will be autom atically changed to 38 mm if DIP switch No. 6 is changed to ON. * The machine is shipped from the factory with the DIP switches set as follows.

1193Q

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Page 64

11. TROUBLESHOOTING

If there is a problem with operat ion, first check that the threads ar e correctly threaded and that th e needle is correctl y installed.

CAUTION

Turn off the power switch and disconnect the power cord before carrying o ut troubleshooting, otherwise the machine will operate if the start switch is pressed by mistake, which could result in injury.

MACHINE HEAD

Problem Cause Remedy Page

Thread breaks.

Skipped stitches occur.

Thread tension control nut pressure is too strong.

Thread is of poor quality. Use a better-quality thread. Thread is too thick for the needle. Use a differently-size needle. Needle groove or needle hole ar e

not smooth.

Needle and looper adjustment is incorrect.

Needle, looper, throat plate or thread path is damaged.

Thread tension control nut pressure is too strong or too weak.

Needle point is broken or bent. Replace with a new needle. 16 Needle and looper adjustment is

incorrect, or clearance is incorrect.

Adjust to an appropriate pressure. 32

Replace with a new needle. 16

Adjust the needle bar height or the looper and spreader height.

Repair the damage with an oilstone or buffer, or replace the damaged part.

Adjust to an appropriate pressure.

Adjust correctly. 44

Needle breaks.

Needle and needle guard adjustment is incorrect.

Looper tip is blunt. Needle is bent. Replace with a new needle. 16 Needle and looper adjustment is

incorrect. Needle and needle guard

adjustment is incorrect.

RH-9800

Adjust correctly . Repair with an oilstone or replace

the looper with a new one.

Adjust the needle bar height or the looper and spreader height.

Adjust correctly . 47

Page 65

11. TROUBLESHOOTING

Problem Cause Remedy Page

Upper thread is not cut.

Lower thread is not cut.

Knife is blunt. Replace with a new knife. 51 Knife does not move to the full

stroke because air pressure is too

Adjust the air pressure. 51

weak.

Upper thread trimmer knife is not picking up the upper thread.

Movable knife is not picking up the needle thread because the last stitch is being skipped.

Movable knife position is incorrect.

Install the upper thread trimmer knife so that it cuts only one side of the upper thread loop.

Refer to the remedies given under “Skipped stitches occur” in this troubleshooting chart.

Adjust the position of the movabl e knife or the loop spreader.

Knife is blunt. Replace with a new knife. 51 Knife does not move to the full

stroke because air pressure is too

Adjust the air pressure. 51

weak. Movable knife position is

incorrect.

Adjust the position of the movabl e knife or the loop spreader.

Thread slips out of the needle at the sewing start.

Material is not being cut cleanly.

Thread nipper spring force is too weak.

Upper thread length is too short after trimming.

Needle and looper adjustment is incorrect.

Not enough upper thread is bei ng fed out.

Cutting pressure is too weak.

Knife and cutting block are not contacting properly.

Adjust the force of the thread nipper spring.

Install the upper thread trimmer knife so that it cuts only one side

of the upper thread loop. Adjust the needle bar height or

the looper and spreader height. Adjust the amount of upper thread

being fed out. Adjust the cutting pressure so that

it is strong enough.

Grind the cutting block surface. 50

Knife is blunt. Replace with a new knife. 51

Cutter arm operation time is too short.

Make the operation time longer by changing the memory switch setting.

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Page 66

INSTRUCTION MANUAL

BROT H E R INDUSTRIES, LTD.

15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone: 81-52-824-2177

Printed in Japan

118-980

S91980-302

2001.11. H (1)

Brother DH4-B980 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

1. NAMES OF EACH PART

2. SPECIFICATIONS

2-1. Specifications

3. INST ALLATION

3-1. T able processing diagram

3-2. Installing the motor

3-3. Installing the machine head

3-4. Installing the oil container

3-5. Installing the spool stand

3-6. Tightening the V -belt

3-7. Installing the control box

3-8. Installing the air unit and the valve assembly

3-9. Connecting the ground wires and the wirings

3-10. Connecting the air tubes

3-11. Installing the air hoses

3-12. Connecting the power cord

4. LUBRICATION

4-1. Adding oil

4-2. Lubrication

5. CORRECT USE

5-1. Initializing settings

5-2. Changing the lower thread and gimp trimming

5-3. Checking the direction of machine operation

5-4. Installing the needle

5-5. Threading the upper thread

5-6. Threading the lower thread

5-7. Threading the gimp

5-8. Setting the material

6. USING THE OPERATION PAN EL AND FRONT PANEL

6-1. Panel button and switch names

6-2. Selecting a program number

6-3. Changing the mode

6-4. Changing the cutting timing

6-5. Setting a program

B.Setting the shape of the eyelet

C.Setting the buttonhole length

D.Setting the tacking length

E.Setting the offset

F. Setting the s titc h pi tc h

H. Setting the cutting space

I. Setting the knife position compensation

P1. Setting X correction

P2. Setting Y correction

6-6. Using the memory switch

6-7. List of error codes

7. SEWING

7-1. Using the EMERGENCY ST OP s witc h

7-2. Sewing

7-3. Adjusting the thread tension

7-4. Needle and knife position

7-5. Using the production counter

7-6. Using a cycle program

7-7. Setting the feed bracket to the front position

7-9. Using feed mode

7-10. Using manual mode

7-11. Changing the cyc le program counter

7-12. Setting the number of home position cycles

7-13. Returning to the home position

8. CLEANING AND MAINTENANCE

8-1. Cleaning

8-2. Draining the oil 8-3. Checking the air filter

9. ST ANDARD ADJUSTMENTS

9-1. Adjusting the height of the spreader and looper

9-2. Adjusting the needle and looper timing

9-3. Adjusting the loop stroke

9-4. Adjusting the height of the needle bar

9-5. Adjusting the clearance between the looper and needle

9-6. Adjusting the needle guard

9-7. Adjusting the spreader mounting positions

9-8. Adjusting the spreader timing

9-9. Adjusting the needle racking width (stitch width)

Adjusting the contact between the knife and the cutting block

9-12. Replacing the knife

9-13. Adjusting the cutting pressure

9-14. Adjusting the cloth opening amount