Brother FB-V61A Owner's Manual

T-8421A

TWIN NEEDLE DIRECT DRIVE LOCK STITCHER

T-8422A

TWIN NEEDLE DIRECT DRIVE LOCK STITCHER

WITH THREAD TRIMMER

T-8452A

TWIN NEEDLE DIRECT DRIVE SPLIT NEEDLE BAR

LOCK STITCHER WITH THREAD TRIMMER

T-8722A

TWIN NEEDLE DIRECT DRIVE LOCK STITCHER

WITH LARGE HOOK AND THREAD TRIMMER

T-8752A

TWIN NEEDLE DIRECT DRIVE SPLIT NEEDLE BAR

LOCK STITCHER WITH LARGE HOOK

AND THREAD TRIMMER

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 machines, it is normal to carry out work while positioned directly in front of moving parts such as the needle and thread take-up, and consequently there is always 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 manual and the indications and symbols that are used on the machine itself are provided in order to ensure safe operation of this machine and to prevent accidents and injury to yourself or other people.

Indications

DANGER

CAUTION

Symbols

· · · · ·

The instructions which follow this term indicate situations where failure to follow the instructions may result in death or serious injury.

The instructions which follow this term indicate situations where failure to follow 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 triangle indicates the nature of the caution that must be taken. (For example, the symbol at left means “beware of injury”.)

This symbol ( ) indicates something that you must not do.

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”.)

T-8421A, 8422A, 8452A, 8722A, 8752A

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2. Notes on safety

Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury.

DANGER

CAUTION

Environmental requirements

Use the sewing machine in an area which is free from sources of strong electrical noise such as electrical line noise or static electric noise. Sources of strong electrical noise may cause problems with correct operation.

Any fluctuations in the power supply voltage should be within ±10% of the rated voltage for the machine. Voltage fluctuations which are greater than this may cause problems with correct operation.

The power supply capacity should be greater than the requirements for the sewing machine's power consumption. Insufficient power supply capacity may cause problems with correct operation.

Machine installation should only be carried out by a qualified technician.

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

The sewing machine weighs approximately 50 kg. The installation should be carried out by two or more people.

Do not connent the power cord until installation is complete. The machine may operate if the treadle is depressed by mistake, which could result in injury.

Turn off the power switch before inserting or removing the plug, otherwise damage to the control box could result.

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.

The ambient temperature should be within the range of 5°C to 35°C during use. Temperatures which are lower or higher than this may cause problems with correct operation.

The relative humidity should be within the range of 45% to 85% during use, and no dew formation should occur in any devices. Excessively dry or humid environments and dew formation may cause problems with correct operation.

In the event of an electrical storm, turn off the power and disconnect the power cord from the wall outlet. Lightning may cause problems with correct operation.

Installation

When securing the cords, do not bend the cords excessively or fasten them too hard with staples, otherwise there is the danger that fire or electric shocks could occur.

If using a work table which has casters, the casters should be secured in such a way so that they cannot move.

Use both hands to hold the machine head when tilting it back or returning it to its original position. If only one hand is used, the weight of the machine head may cause your hand to slip, and your hand may get caught.

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 any circumstances, as they can cause vomiting and diarrhea. Keep the oil out of the reach of children.

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T-8421A, 8422A, 8452A, 8722A, 8752A

CAUTION

Sewing

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

The sewing machine should not be used for any applications other than sewing.

Be sure to wear protective goggles when using the machine. If goggles are not worn, there is the danger that if a needle breaks, parts of the broken needle may enter your eyes and injury may result.

Turn off the power switch at the following times. The machine may operate if the treadle is depressed by mistake, which could result in injury.

 When threading the needle  When replacing the bobbin and needle  When not using the machine and when leaving

the machine unattended

If using a work table which has casters, the casters should be secured in such a way so that they cannot move.

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

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.

Use both hands to hold the machine head when tilting it back or returning it to its original position. If only one hand is used, the weight of the machine head may cause your hand to slip, and your hand may get caught.

If an error occurs in machine, or if abnormal noises or smells are noticed, immediately turn off the power switch. Then contact your nearest Brother dealer or a qualified technician.

If the machine develops a problem, contact your nearest Brother dealer or a qualified technician.

Turn off the power switch before carrying out cleaning. The machine may operate if the treadle is depressed by mistake, which could result in injury.

Use both hands to hold the machine head when tilting it back or returning it to its original position. If only one hand is used, the weight of the machine head may cause your hand to slip, and your hand may get caught.

Cleaning

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 any circumstances, as they can cause vomiting and diarrhea. Keep the oil out of the reach of children.

Use only the proper replacement parts as specified by Brother.

T-8421A, 8422A, 8452A, 8722A, 8752A

iii

3.Warning labels

The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are difficult to read, please contact your nearest Brother dealer.

1

2

3

4

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.

Direction of operation

Oil pan

2867M

Safety devices: (A) Finger guard (B) Thread take-up cover

Control box

iv

2083M

2868M

T-8421A, 8422A, 8452A, 8722A, 8752A

1. MACHINE SPECIFICATIONS

A

B

C

D

E

F

B C D E F

4 7

Rotary hook Standard hook Large hook

2 5

Stitch function Fixed needle bar Split needle bar

1 2

Thread trimmer -

4 T

Quick reverse

Thread wiper

0 3

Lubrication type Minimum lubrication Semi dry

F 3 5

Use For foundation

○ ○ ○

For light-weight and

medium- weight materials

○

-

For heavy-weight materials

1

T-8421A, 8422A, 8452A, 8722A, 8752A

1. MACHINE SPECIFICATIONS

T-8421A

-T3F -T33 -T03 -T05 Max. sewing speed 3,000 rpm 3,000 rpm 4,000 rpm 3,000 rpm Start backtacking and continuous backtacking speed

250–1,800 rpm

End backtacking speed 1,000 rpm Max. stitch length 4 mm 5 mm

Lifting lever 7 mm Presser foot

height

Knee lifter 13 mm Feed dog height 1 mm Needle (DP×5)

#9–#14 #11–#16 #14–#22 Motor AC servo motor (4-pole, 550W) Control circuit Microprocessor

T-8422A

-403 -433 -405 Max. sewing speed 4,000 rpm 3,000 rpm Start backtacking and continuous backtacking speed

250–1,800 rpm

End backtacking speed 1,000 rpm Max. stitch length 4 mm 5 mm

Lifting lever 7 mm Presser foot

height

Knee lifter 13 mm Feed dog height 1 mm Needle (DP×5)

#11–#16 #14–#22 Motor AC servo motor (4-pole, 550W) Control circuit Microprocessor

T-8452A

-403 -405 Max. sewing speed 3,000 rpm Start backtacking and continuous backtacking speed

250–1,800 rpm

End backtacking speed 1,000 rpm Max. stitch length 5 mm

Lifting lever 7 mm Presser foot

height

Knee lifter 13 mm Feed dog height 1 mm Needle (DP×5)

#11–#16 #14–#22 Motor AC servo motor (4-pole, 550W) Control circuit Microprocessor

T-8722A, 8752A

-403 -405 Max. sewing speed 3,000 rpm Start backtacking and continuous backtacking speed

250–1,800 rpm

End backtacking speed 1,000 rpm Max. stitch length 7 mm

Lifting lever 7 mm Presser foot

height

Knee lifter 13 mm Feed dog height 1 mm Needle (DP×5)

#11–#16 #14–#22 Motor AC servo motor (4-pole, 550W) Control circuit Microprocessor

T-8421A, 8422A, 8452A, 8722A, 8752A

2

t

2. NAMES OF MAJOR PARTS

(1) Bobbin winder (2) Thread wiper (T-8422A, 8452A, 8722A, 8752A) (3) Lifting lever (4) Quick reverse (Actuator) (5) Presser foot (6) Control box (7) Knee lifter assembly (8) Power switch

(9) Stitch length dial (10) Reverse lever (11) Oil gauge window (12) Machine pulley (13) Operation panel (14) Cotton stand (15) Stop lever (T-8452A, 8752A )

Safety devices

(16) Thread take-up cover (17) Finger guard

The settings for this sewing machine are carried ou using the operation panel (13), and so this panel is no used. (Settings made using this panel will not affect sewing machine operation.)

2869M

3

T-8421A, 8422A, 8452A, 8722A, 8752A

3. INSTALLATION

CAUTION

Machine installation should only be carried out by a qualified technician.

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

The sewing machine weighs approximately 50 kg. The installation should be carried out by two or more people.

About the machine set-up location

 Do not set up this sewing machine near other equipment such as

televisions, radios or cordless telephones, otherwise such equipment may be affected by electronic interference from the sewing machine.

 The sewing machine should be plugged directly into an AC wall

outlet. Operation problems may result if extension cords are used.

3. INSTALLATION

Do not connect the power cord until installation is complete. The machine may operate if the treadle is depressed by mistake, which could result in injury.

Use both hands to hold the machine head when tilting it back or returning it to its original position. If only one hand is used, the weight of the machine head may cause your hand to slip, and your hand may get caught.

2086M

Carrying the machine

 The machine should be carried by the arm by two people as

shown in the illustration.

* Hold the motor cover (A) by hand also so that the pulley does

not rotate.

Tilting back the machine head

 Hold section (B) with your foot so that the table does not move,

and then push the arm with both hands to tilt back the machine head.

Returning the machine head to the upright position

1. Clear away any tools, etc. which may be near the table holes.

2. While holding the face plate with your left hand, gently return the machine head to the upright position with your right hand.

2870M

2871M

2872M

T-8421A, 8422A, 8452A, 8722A, 8752A

4

3. INSTALLATION

3-1. Table processing diagram

 The top of the table should be 40 mm in thickness and should be strong enough to hold the weight and with-stand the

vibration of the sewing machine.

 Drill holes as indicated in the illustration below.

Control box mounting hole

Head rest hole

Cotton stand hole

Cord hole

2873M

3-2. Installation

2091M

1. Control box

(1) Control box (2) Bolts [3 pcs] (3) Nuts [3 pcs] (4) Spring washers [3 pcs] (5) Washers [3 pcs]

2. Connecting rod

(6) Connecting rod (7) Nut

5

T-8421A, 8422A, 8452A, 8722A, 8752A

Operator

2092M

2874M

2875M

T-8421A, 8422A, 8452A, 8722A, 8752A

3. INSTALLATION

3. Power switch

(1) Power switch (2) Screws [2 pcs]

4. Oil pan

(1) Head cushions (left) [2 pcs] (2) Head cushions (right) [2 pcs] (3) Oil pan (4) Oiler

5. Rubber cushions

(1) Rubber cushions [2 pcs] (2) Nails [4 pcs]

6. Knee lifter complying bar

(3) Knee lifter complying bar

6

3. INSTALLATION

2876M

2877M

7. Machine head

(1) Hinges [2 pcs] (2) Machine head (3) Head rest

NOTE:

Tap the head rest (3) securely into the table hole. If the head rest (3) is not pushed in as far as it will go, the machine head will not be sufficiently stable when it is tilted back.

8. Operation panel

(1) Operation panel (2) Screws [2 pcs]

(Use for tightening rear cover)

9. Cotton stand

(1) Cotton stand

NOTE:

Securely tighten the nut (4) so that the two rubber cushions (2) and the washer (3) are securely clamped and so that the cotton stand (1) does not move.

2878M

7

T-8421A, 8422A, 8452A, 8722A, 8752A

3. INSTALLATION

10. Knee lifter plate

(1) Knee lifter plate (2) Bolt

* Loosen the bolt (3) and the bolt (4),

and move the knee lifter plate (1) to a position where it is easy to use.

2879M

1. Turn the machine pulley so that the feed dog is below the top of the needle plate.

2. Lower the presser foot (5) by using the lifting lever (4).

2880M

2881M

3. Loosen the nut (6).

4. Turn the screw (8) to adjust so that the amount of play in the knee lifter (7) is approximately 2 mm when the knee lifter plate (1) is gently pressed.

5. Securely tighten the nut (6).

6. Loosen the nut (9).

7. Turn the screw (10) until the distance between the end of the screw (10) and the knee lifter (7) is approximately 5 mm.

8. Turn the adjusting screw (10) to adjust so that the presser foot (5) is at the desired position within a distance of 13 mm of the needle plate when the knee liter plate (1) is fully pressed.

9. After adjustment is completed, securely tighten the nut (9).

Within 13 mm

2882M

T-8421A, 8422A, 8452A, 8722A, 8752A

8

3. INSTALLATION

3-3. Lubrication

CAUTION

Do not connect the power cord until lubrication has been completed, otherwise the machine may operate if the treadle is depressed 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 any circumstances, as they can cause vomiting and diarrhea. Keep the oil out of the reach of children.

 The sewing machine should always be lubricated and the oil supply replenished before it is used for the first time, and also

after long periods of non-use.

 Use only the lubricating oil (Nisseki Mitsubishi Sewing Lube 10N; VG10) specified by Brother.

* If this type of lubricating oil is difficult to obtain, the recommended oil to use is <Exxon Mobil Essotex SM10; VG10>.

1. Tilt back the machine head.

2. Remove the rubber cap (1).

3. Use the accessory oiler (2) to pour lubricating oil into the oil cover (3) until the oil level reaches the reference line (4).

NOTE:

Do not fill with lubricating oil past the reference line (4). If you pour in too much lubricating oil, it may spill out when the machine head is tilted back.

4. Replace the rubber cap (1).

5. Return the machine head to its original position.

* If the lubricating oil level drops below the bottom (6) of the

oil gauge window (5), be sure to add more oil.

2883M

1. Remove the rubber cap (1).

2. Use the accessory oiler (2) to pour in lubricating oil until the oil level reaches the top reference line (4) of the oil gauge window (3).

3. Replace the rubber cap (1).

* If the lubricating oil level drops below the bottom reference

line (6), be sure to add more oil.

2884M

9

T-8421A, 8422A, 8452A, 8722A, 8752A

■Lubrication

Apply 1 - 2 drops of oil to the places indicated by the arrows.

Rotary hook race (left and right)

* Do not apply oil for semi dry types.

<T-8452A, 8752A>

3. INSTALLATION

2885M

2886M

T-8421A, 8422A, 8452A, 8722A, 8752A

2887M

10

3. INSTALLATION

3-4. Connecting the cords

DANGER

Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury.

CAUTION

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

Do not connect the power cord until all cords have been connected. The machine may operate if the treadle is depressed by mistake, which could result in injury.

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.

3-4-1. Opening the control box cover

3-4-2. Connecting the cords

2888M

2889M

(1) Screw (2) Cover

1. Sewing machine cords

11

T-8421A, 8422A, 8452A, 8722A, 8752A

Push in securely until the tabs (5) engage.

Cords

Press the tab.

3131M

3132M

2110M

3. INSTALLATION

(1) 7-pin head detector unit connector (2) 10-pin operating panel connector (3) 14-pin encoder connector (4) 14-pin machine connector

Refer to the following page for the 4-pin motor connector.

2. Repeat cable tie

(1) Repeat cable tie (2) Wire clip

NOTE:

 Bind the cords in such a way that the

connector does not get pulled out.

 All cords that come out from the

control box should be secured to the cord holder (3) using the repeat cable tie (1), otherwise vibration from the sewing machine may cause the cords to become disconnected, which can cause problems with the operation of the control box.

T-8421A, 8422A, 8452A, 8722A, 8752A

12

Brother FB-V61A Owner's Manual

SAFETY INSTRUCTIONS

CONTENTS

1. MACHINE SPECIFICATIONS

2. NAMES OF MAJOR PARTS

3. INSTALLATION

3-1. Table processing diagram

3-2. Installation

3-3. Lubrication

3-4. Connecting the cords

3-4-1. Opening the control box cover

3-4-2. Connecting the cords