Brother S-7220C User Manual

INSTRUCTION MANUAL

S-7220C

Please read this manual before using the machine. Please keep this manual within easy reach for quick reference.

SINGLE NEEDLE DIRECT DRIVE NEEDLE FEED LOCK STITCHER WITH THREAD TRIMMER

Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions 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.

S-7220C

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. The meanings of these indications and symbols are given below.

Indications

DANGER

CAUTION

Symbols

WARNING

· · · · ·

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”.)

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

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

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

S-7220C

i

[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 cover of the control box. Touching areas where high voltages are present can result in severe injury.

Do not allow any liquids to get onto this sewing machine, otherwise fire, electric shocks or operating problems may occur. If any liquid gets inside the sewing machine (machine head or control box), immediately turn off the power and disconnect the power plug from the electrical outlet, and then contact the place of purchase or a qualified technician.

DANGER

WARNING

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 46 kg (101 lb). The installation should be carried out by two or more people.

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.

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.

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.

Installation

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.

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

Secure the table so that it will not move when tilting back the machine head. If the table moves, it may crush your feet or cause other injuries.

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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S-7220C

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.

y

When threading the needle

y

When replacing the bobbin and needle

y

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.

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.

Secure the table so that it will not move when tilting back the machine head. If the table moves, it may crush your feet or cause other injuries.

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

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.

Secure the table so that it will not move when tilting back the machine head. If the table moves, it may crush your feet or cause other injuries.

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 operation, 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.

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.

Maintenance and inspection

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

Ask your Brother dealer or a qualified electrician to carry out any maintenance 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 machine may operate if the treadle is depressed by mistake, which could result in injury.

y

When carrying out inspection, adjustment and maintenance

y

When replacing consumable parts such as the rotary hook and knife

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

Secure the table so that it will not move when tilting back the machine head. If the table moves, it may crush your feet or cause other injuries.

S-7220C

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.

When replacing parts and installing optional accessories, be sure to use only genuine Brother parts. Brother will not be held responsible for any accidents or problems resulting from the use of non-genuine parts.

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.

To prevent accidents and problems, do not modify the machine yourself. Brother will not be held responsible for any accidents or problems resulting from modifications made to the machine.

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[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

Touching areas where high voltages are present can result in severe injury. Turn off the power before opening the cover.

4

5

Be careful not to get your hands caught when returning the machine head to its original position after it has been tilted.

Be careful to avoid injury from the moving thread take-up.

* Safety devices: (A) Finger guard

(B) Thread take-up cover

8

6

7

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

iv

S-7220C

Oil pan

Transformer box (100 V/400 V system only)

Oil tank

Control box

S-7220C

0545D

v

1. MACHINE SPECIFICATIONS

4 Quick reverse O Thread wiper O

0 3 Lubrication type Minimum lubrication Semi dry

3 5

0547D

-403 -433 -405 Max. sewing speed 5,000 sti/min* Start backtacking and continuous backtacking speed 220 - 3,000 sti/min End backtacking speed 1,800 sti/min Max. stitch length 4.5 mm 5.5 mm Presser foot

height Feed dog height 1.0 mm 1.2 mm Needle (DB×1, DP×5)

Motor AC servo motor Control circuit Microprocessor

*1…When sewing at speeds of 4,000 sti/min or higher, set the stitch length to 3.5 mm or less.

2

…When sewing at speeds of 3,000 sti/min or higher, set the stitch length to 4.5 mm or less.

*

Lifting lever 6 mm Knee lifter 16 mm

Use For medium-weight

materials

1

#11 - #18 #19 - #22

Rotary hook

-403, -433 -405

Lubricated /

for medium materials

Lubricating oil

-403, -405 -433 Rotary hook High-speed spindle Needle bar

High-speed spindle

4,000 sti/min 4,000 sti/min *

.

For heavy-weight materials

2

Lubricated /

for heavy materials

Special Brother grease

1

S-7220C

2. 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 46 kg (101 lb). The installation should be carried out by two or more people.

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.

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.

2. INSTALLATION

Secure the table so that it will not move when tilting back the machine head. If the table moves, it may crush your feet or cause other injuries.

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.

0548D

2088M

2089M

S-7220C

2

2. INSTALLATION

2-1

. 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.

Cotton stand hole

Cord hole

Control box mounting hole

Head rest hole

4126M

2-2

. Installation

4127M

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

3

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2. INSTALLATION

3. Oil pan

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

4128M

4. Rubber cushions

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

5. Knee lifter complying bar

(3) Knee lifter complying bar

2094M

6. 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.

0549D

S-7220C

4

2. INSTALLATION

0550D

0551D

3636M

7. Operation panel

(1) Operation panel (2) Washers [2 pcs] (3) Screws [2 pcs]

(Use the washers (2) and the screws (3) which are secured to the side plate.)

8. Sticker (Remove)

(1) Sticker

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.

5

S-7220C

2. INSTALLATION

10. Knee lifter plate

(1) Knee lifter plate (2) Bolt

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

and then adjust the position of the knee lifter plate (1) so that it is easy to use.

0552D

0593D

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

2. Lower the presser foot (6) by using the lifting lever (5).

4134M

Within 16 mm

0553D

3. Loosen the nut (7).

4. Turn the screw (9) to adjust so that the amount of play in the knee lifter (8) is approximately 2 mm when the knee lifter plate (1) is gently pressed.

5. Securely tighten the nut (7).

6. Loosen the nut (10).

7. Turn the screw (11) until the distance between the end of the screw (11) and the knee lifter (12) is approximately 3 mm.

8. Turn the adjusting screw (11) to adjust so that the presser foot (6) is at the desired position within a distance of 16 mm of the needle plate when the knee liter plate (1) is fully pressed.

9. After adjustment is completed, securely tighten the nut (10).

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6

2. INSTALLATION

2-3. Lubrication

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.

When cutting the nozzle of the oil tank, hold the base of the nozzle securely. If you hold the end of the nozzle, injury from the scissors may result.

CAUTION

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.

1. Hold the base of the nozzle of the accessory oil tank (1), and use scissors to cut about half-way along the straight section (A) of the nozzle.

2. Loosen and remove the nozzle, and then remove the seal (2).

3. Tighten the nozzle.

4. Tilt back the machine head.

5. Remove the rubber cap (3), and pour 120ml of lubricating oil into the oil tank (4). (Use the upper reference line (5) as a guide when pouring.)

6. Replace the rubber cap (3).

7. Return the machine head to its original position.

8. Check that the oil gauge (7) comes to the upper reference line in the oil gauge window (6).

If the oil gauge (7) drops below the lower reference line (or if the oil level drops below the lower reference line (8) on the oil tank (4)), be sure to replenish the oil.

Upper reference

7

Lower reference

0554D

S-7220C

2-4. Connecting the cords

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

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.

2-4-1

. Opening the control box cover

DANGER

CAUTION

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.

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.

2. INSTALLATION

(1) Screw (2) Cover

2-4-2

. Connecting the cords

4137M

0555D

1. Sewing machine cords

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8

2. INSTALLATION

Lower the tab (6).

Push in securely until the tabs (6) engage.

Cords

Press the tab.

Raise the tab (6).

4139M

4140M

4141M

(1) 6-pin head detector unit connector (2) 12-pin operation panel connector (3) 10-pin resolver connector (4) 14-pin machine connector (5) 4-pin motor connector

2. Binding the cords

(1) Repeat cable tie

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 (2) 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.

9

S-7220C

2. INSTALLATION

3. Ground wire

(1) Ground wire (2) Washer (3) Spring washer (4) Screw

Oil pan

Ground symbol

4142M

4143M

Control box

Green and yellow wire (ground wire)

Leg

4. Other cords

Connect cords that match the voltage specifications.

(1) Filter box (2) Screws [4 pcs.] (3) Staples [7 pcs.] (4) Power cord

1. Attach an appropriate plug to the power cord (4). (The green and yellow wire is the ground wire.)

2. Insert the power plug into a properly-grounded electrical outlet.

NOTE:

 Take care when tapping in the

staples (3) to make sure that they do not pierce the cords.

 Do not use extension cords,

otherwise machine operation problems may result.

2129B

S-7220C

10

Brother S-7220C User Manual

SAFETY INSTRUCTIONS

[1] Safety indications and their meanings

[2] Notes on safety

[3] Warning labels

CONTENTS

1. MACHINE SPECIFICATIONS

2. INSTALLATION

2. INSTALLATION

2-3. Lubrication

2-4. Connecting the cords