Brother BAS-326H, BAS-311HN User Manual

INSTRUCTION MANUALINSTRUCTION MANUAL

BAS-311HN BAS-326H

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

DIRECT DRIVE

PROGRAMMABLE ELECTRONIC PATTERN SEWER

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 lever, 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.

BAS-311HN, BAS-326H

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

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

WARNING

CAUTION

Symbols

･･････

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.

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”.)

BAS-311HN, BAS-326H

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 control box cover. 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.

Do not connect anything to the USB port other than the USB memory. If this is not observed, problems with operation may result.

Installation

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 88 kg. The installation should be carried out by three or more people.

Do not connect the power cord until installation is complete. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

Hold the machine head with both hands when tilting it back or returning it to its original position. Furthermore, do not apply excessive force when tilting back the machine head. The sewing machine may become unbalanced and fall down, and serious injury or damage to the sewing machine may 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 pneumatic delivery capability should be greater than the requirements for the sewing machine's total air consumption. Insufficient pneumatic delivery capability may cause problems with correct operation.

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.

All cords should be secured at least 25 mm away from any moving parts. Furthermore, do not excessively bend the cords or secure them too firmly with staples, otherwise there is the danger that fire or electric shocks could occur.

Install the safety covers to the machine head and motor.

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

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. If the oil and grease get into your eyes or onto your skin, inflammation can result. Furthermore, do not drink or eat the lubricating oil or grease. They may cause diarrhea or vomiting. Keep the oil out of the reach of children.

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BAS-311HN, BAS-326H

CAUTION

Sewing

To prevent problems, do not use objects with sharp points to operate the LCD panel.

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. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

• When replacing the bobbin and needle

• When not using the machine and when leaving the

machine unattended

Cleaning

Turn off the power switch before carrying out cleaning. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

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.

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. If the oil and grease get into your eyes or onto your skin, inflammation can result. Furthermore, do not drink or eat the lubricating oil or grease. They may cause diarrhea or vomiting. 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 before carrying out the following operations. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

• Inspection, adjustment and maintenance

• Replacing consumable parts such as the rotary

hook

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 pneumatic equipment.

Hold the machine head with both hands when tilting it back or returning it to its original position. Furthermore, do not apply excessive force when tilting back the machine head. The sewing machine may become unbalanced and fall down, and serious injury or damage to the sewing machine may result.

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

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.

BAS-311HN, BAS-326H

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 careful not to get your hand caught when tilting back the machine head and returning it to its original position.

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.

.

*Safety devices

Devices such as eye guard, finger guard, thread take-up cover, side cover, rear cover, solenoid cover, inner cover, outer cover, fixed cover and gas spring support cover

8

5

6

7

iv

Direction of operation

Be careful to avoid injury from moving parts.

Do not hold, otherwise problems with operation or injury may occur.

BAS-311HN, BAS-326H

BAS-311HN BAS-326H

Rear cover

Inner cover L

Outer cover

Fixed cover

Solenoid cover

Inner cover L

Outer cover

Fixed cover

Rear cover

Side cover

Thread take-up cover

Eye guard

Finger guard

Inner cover R

Outer cover

Fixed cover

Gas spring support cover

Thread take-up cover

Eye guard

Finger guard

Inner cover R

Outer cover

Fixed cover

Gas spring support cover

3504B

BAS-311HN, BAS-326H

3505B

v

1. NAMES OF MAJOR PARTS

(1) Power switch (2) Control box (11) Finger guard (3) LCD panel (12) Eye guard (4) Foot switch (13) Thread take-up cover (5) Work clamp switch (14) Rear cover (6) Start switch (7) STOP switch (8) Pulley (9) Cotton stand (10) Solenoid valve (pneumatic work clamp specifications)

Two-pedal foot switch

3677B

Safety devices:

BAS-311HN, BAS-326H

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2. SPECIFICATIONS

3580B

Sewing machine Lock stitch pattern tacking sewing machine

Stitch formation Single needle lock stitch

Max. sewing speed 2,800 sti/min

Max. sewing area (XxY) BAS-311HN: 150 x 100 mm BAS-326H: 220 x 100 mm

Feed mechanism Intermittent feed, pulse motor drive

Stitch length

Maximum No. of stitches 20,000 stitches (per program)

No. of sewing data items that can be stored

Motor-driven work clamp specifications: Pulse motor drive method

Work clamp lift method

Work clamp height

Intermittent presser foot lift amount Intermittent presser foot stroke

Hook Double-capacity shuttle hook

Motor-driven work clamp specifications: Integrated-type work clamp

999 (Internal memory, SD card, USB memory) (*1)

Pneumatic work clamp specifications: Pneumatic cylinder method

Pneumatic work clamp specifications: Separate-type work clamp

Motor-driven work clamp specifications: Max. 25 mm

Pneumatic work clamp specifications: Max. 30 mm

2 − 4.5 mm, 4.5 − 10 mm or 0 (Default setting 3 mm)

0.05 − 12.7 mm

22 mm

Wiper device Standard equipment

Thread trimmer Standard equipment

Cycle programs 30

Motor 550 W AC servo motor

Weights

Power source

Air pressure 0.5 MPa 1.8 l/min.

(*1) The number of data items and stitches that can be stored will vary depending on the number of stitches in each

program. No guarantees of operation can be given for any media.

BAS-311HN, BAS-326H

2

(For single-phase 110 V and three-phase 380 V/400 V, the trans box is required.)

Machine head Approx. 88 kg, LCD panel Approx. 0.8 kg

Control box 9 kg (Differs depending on destination)

Single-phase 110V / 220V / 230V, 3-phase 220V / 380V / 400V

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 head weighs approximately 88kg. The installation should be carried out by three or more people.

Do not connect the power cord until installation is complete. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

Hold the machine head with both hands when tilting it back or returning it to its original position. Furthermore, do not apply excessive force when tilting back the machine head. The sewing machine may become unbalanced and fall down, and serious injury or damage to the sewing machine may result.

All cords should be secured at least 25 mm away 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

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.

Install the safety covers to the machine head and

motor.

3-1. Table processing diagram

• The thickness of the table should be at least 40 mm, and it should be strong enough to bear the weight and vibration of the sewing machine.

• Check that the control box is at least 10 mm away from the leg. If the control box and the leg are too close together, it may result in incorrect sewing machine operation.

BAS-311HN, BAS-326H

3679B

3

3. INSTALLATION

3-2. Installing the control box

Operator

3-3. Installing the oil pan

Remove the six screws (1), and then remove the control box cover (2). (3) Control box (4) Bolts [4 pcs.] (5) Plain washers [4 pcs.] (6) Spring washers [4 pcs.] (7) Nuts [8 pcs.]

3033B

(8) Power switch (9) Wood screws [2 pcs.] (10) Staples [4 pcs.]

1841B

(1) Oil pan (2) Nails [6 pcs.] (3) Waste oil tank

3034B

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BAS-311HN, BAS-326H

3-4. Installing the machine head

3. INSTALLATION

(1) Pins [2 pcs.] (2) Set screws [2 pcs.] (3) Hinge rubber assemblies [2 pcs.]

Place the machine head gently on top of the oil pan.

Pulse motor

Approx. 20 mm

NOTE:

• Be careful not to get the cords clamped between the machine head and the oil pan.

• When holding the machine head, do not hold it by the pulse motor. This may cause problems with operation of the pulse motor.

3506B

(4) Hinge holders [2 pcs.] (5) Bolts [4 pcs.] (6) Plain washers [4 pcs.] (7) Nuts [4 pcs.] (8) Head rest (9) Bolts with washer [4 pcs.]

3230B

BAS-311HN, BAS-326H

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3. INSTALLATION

BAS-311HN

Needle plate

BAS-326H

Needle plate

Work clamp arm

3520B

3431B

(10) Auxiliary plate (11) Bolts with washer [8 pcs.]

Loosen the eight bolts with washer (11), and adjust so that the auxiliary plate (10) is 0 to 0.5 mm above the needle plate.

NOTE:

• Install the auxiliary plate (10) so that it is horizontal. If the auxiliary plate (10) is lower than the needle plate, the feed plate may get caught on the needle plate.

Move the work clamp arm all the way to the right when looking from the front of the sewing machine (the direction of the arrow in the illustration), and then gently tilt back the machine head.

NOTE:

• Three or more people should tilt back the machine head, and it should be tilted gently while being held with both hands.

• Be careful not to clamp any items such as screwdrivers under the

3432B

cushion when tilting back the machine head.

(12) Bobbin winder tension assembly (13) Set screw [1 pc.]

3521B

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BAS-311HN, BAS-326H

3534B

3. INSTALLATION

(14) Gas spring holders [2 pcs.] (15) Spacer (16) Bolt (17) Nut (18) Gas spring (19) Shaft collars [2 pcs.] (20) Gas spring shaft D

Be sure to install so that the side with “UP” on it is facing upward.

(21) Plain washers [2 pcs.] (22) Retaining rings E [2 pcs.] (23) Bolts [2 pcs.] (24) Plain washers (medium) [2 pcs.] (25) Plain washers (large) [2 pcs.] (26) Spring washers [2 pcs.] (27) Nuts [2 pcs.] (28) Gas spring shaft U (29) Retaining rings E [2 pcs.] (30) Plain washers (small) [2 pcs.] (31) Absorber setting plate (32) Bolts with washer [2 pcs.]

(33) Gas spring support cover (34) Bolts with washer [6 pcs.]

3535B

BAS-311HN, BAS-326H

7

3. INSTALLATION

3-5. Installing the LCD panel

3536B

Gently return the machine head to its original position.

1. Remove the two screws (35), and then temporarily remove the machine head switch assembly (36).

2. Use the two screws (35) which were removed to install the machine head switch assembly (36) in the position shown in the illustration.

3. Check that the machine head switch as turned on as shown in figure [A].

* If the machine head switch is not

turned on, adjust the installation position while referring to “3-16. Checking the machine head switch”.

(1) Cradle (2) Rubber cushion (3) Wood screws [4 pcs.] (4) Setting plate (5) Flat screws [4 pcs.] (6) LCD panel (7) Staples [2 pcs.]

8

• Pass the cord of the LCD panel (8) through the table hole, and then insert it into the (PANEL) connector (9) on the side of the control box.

• Tighten the four wood screws (3) so that the thickness of the rubber cushion (2) is 5 mm.

3554B

BAS-311HN, BAS-326H

3-6. Installing the two-pedal foot switch

3042B

3-7. Connecting the cords

3. INSTALLATION

(1) Two-pedal foot switch (2) Conversion harness

Connect the connector for the two-pedal foot switch (1) to the conversion harness (2). Insert the conversion harness (2) into the P15 (PEDAL) connector on the main P.C. board. (Refer to "3-7. Connecting the cords".) * Be sure to make the ground connection. (Refer to “3-8.

Connecting the ground wire”.)

<Two-pedal foot switch operating method> When the work clamp switch (left) is depressed, both work clamps are lowered, and when the start switch (right) is depressed, the sewing machine starts sewing. * The work clamp lowering method can be changed using

memory switch No. 002. (Refer to "2-2. List of memory switch settings" in the "LCD Panel/Operation Panel" Instruction Manual.)

Work clamp switch (2-step)

3528B

Start switch

4923Q

1. Gently tilt back the machine head.

2. Pass the cord bundle through the hole in the work table.

3. Loosen the two screws (1), and then open the cord presser plate (2) in the direction of the white arrow and pass the cord bundle through the opening.

4. Securely connect the connectors as indicated in the table.

(Continued on next page)

NOTE:

• Check that the connector is facing the

correct way, and then insert it firmly until it locks into place.

• Secure the cables with cable ties and

cord clamps, while being careful not to pull on the connector.

BAS-311HN, BAS-326H

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3. INSTALLATION

< Main P. C. board >

Lock the cord clamp securely.

Press the tab.

3542B

X pulse motor encoder [5-pin] White P17 (X-ENC) (2) Y pulse motor encoder [5-pin] Blue P18 (Y-ENC) (2) Intermittent presser foot pulse motor encoder [5-pin] Black P19 (P-ENC) (2) Machine head switch [3-pin] P14 (HEAD-SW) (2) Conversion harness (two-pedal foot switch) [7-pin] White P15 (PEDAL) (2) Machine head memory [6-pin] P16 (HEAD-M) (2) Thread trimmer solenoid [6-pin] P2 (SOL1) (1) Digital tension solenoid / Tension release solenoid [4-pin] P3 (SOL2) (1) X pulse motor [4-pin] White P21 (XPM) (1) Y pulse motor [4-pin] Blue P22 (YPM) (1) Work clamp pulse motor [4-pin] Black P23 (PPM) (1) Home position sensor [12-pin] White P8 (SENSOR1) (2) (3) STOP switch [6-pin] White P9 (HEAD) (2) (3) Valve harness [12-pin] (pneumatic work clamp specifications) P35 (EX-OUT1) (2) (3) Upper thread breakage detector [2-pin] White P36, P9(HEAD) (2) (3)

Connectors

Connection location on

main P. C. board

Cord clamps /

cable ties

NOTE: Route the X, Y and work clamp pulse motor harnesses so that they do not touch the power supply P.C. board at the

bottom of the control box.

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BAS-311HN, BAS-326H

< Motor P. C. board >

3537B

Connectors

Upper shaft motor [4-pin] Synchronizer [10-pin]

BAS-311HN, BAS-326H

3538B

3. INSTALLATION

Lock the cord clamps securely.

Connection location on

motor P. C. board

（UVW） P11（SYNC）

Cord clamps

(4)

(2) (3)

5. Close the cord presser plate (6) in the direction of the white arrow, and secure it by tightening the two screws (5).

NOTE:

Close the cord presser plate (6) securely so that no foreign objects, insects or small animals can get inside the control box.

6. Check that the cords do not get pulled, and then gently return the machine head to its original position.

11

3. INSTALLATION

(PANEL)

3557B

Connector D-sub connector

LCD panel [9-pin] (PANEL)

12

BAS-311HN, BAS-326H

3. INSTALLATION

3-8. Connecting the ground wire

CAUTION

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.

(1) Ground wire from the machine head (2) Ground wires from two-pedal foot switch harnesses (2 wires)

• Tighten the control box cover with the six screws. Check that the cords are not clamped by the cover at this time.

3529B

NOTE: Make sure that the ground connections are secure in order to ensure safety.

BAS-311HN, BAS-326H

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3. INSTALLATION

3-9. Connecting the power cord

CAUTION

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.

< Seen from underneath table >

Control box

Leg

Connect cords that match the voltage specifications.

< EU specifications＞

(1) Filter box (2) Screws [4 pcs.] (3) Staples [6 pcs.] (4) Power cord

1. Attach an appropriate switch and cable 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.

Green and yellow wire (ground wire)

3665B

14

BAS-311HN, BAS-326H

Operator

Green and yellow wire (ground wire)

3146B

3638B

3. INSTALLATION

<200 V system >

(1) Power switch (2) Wood screws [2 pcs.]

(3) 3-pin power supply connector (4) Power cord (5) Staples [5 pcs.]

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

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

• Do not use extension cords, otherwise

machine operation problems may result.

3. Use the six screws to tighten the cover of the control box. Check that none of the cords are being clamped by the cover at this time.

BAS-311HN, BAS-326H

15

3. INSTALLATION

Operator

Green and yellow wire (ground wire)

<100 V / 400 V system >

(1) Power switch (2) Wood screws [2 pcs.]

3146B

2348B

(3) Transformer box (4) Transformer box plates [2 pcs.] (5) Screws [with washer] [4 pcs.] (6) 3-pin power supply connector (7) Staples [6 pcs.] (8) Cord clamps [2 pcs.] (9) Power cord

1. Attach an appropriate plug to the power cord (9). (The green and yellow wire is the ground wire.)

2. Insert the power plug into a properly-grounded AC power supply.

* The inside of the control box uses

single-phase power.

NOTE:

• If the ground connection is not secure,

electric shocks, operating errors or damage to electronic components such as P.C. boards may occur.

• Take care when tapping in the staples

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

• Do not use extension cords, otherwise

machine operation problems may result.

3. Use the six screws to tighten the cover of the control box. Check that none of the cords are being clamped by the cover at this time.

3658B

16

BAS-311HN, BAS-326H

3-10. Installing the cotton stand

3640B

3. INSTALLATION

(1) Cotton stand

NOTE:

Securely tighten the nut (3) so that two washers (2) are securely clamped so that the cotton stand (1) does not move.

BAS-311HN, BAS-326H

17

3. INSTALLATION

3-11. Installing the pneumatic unit (pneumatic work clamp specifications)

Install underneath the work table.

(1) Solenoid valve assembly (2) Washers [2 pcs.] (3) Wood screws [2 pcs.] (4) Rubber hose (OPTION PARTS)

After installing the pneumatic unit, adjust the air pressure. (Refer to "7-18. Adjusting the air pressure".)

NOTE:

Make sure that the pneumatic unit does not touch the control box or the work table leg.

1904B

Connect each air tube to the position with the corresponding number.

Cylinder R

Cylinder L

Upper knob

Lower knob

Manual button

You can use the knob to adjust the lifting and dropping speeds for the work clamp. The valve knobs should be adjusted so that the left and right sides of the work clamp operate at the same speed.

• When the upper knob is tightened, the lifting speed becomes slower. When it is loosened, the lifting speed becomes faster.

• When the lower knob is tightened, the lowering speed becomes slower. When it is loosened, the lowering speed becomes

faster.

You can operate the work clamp while the power is turned off by pressing the manual button.

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BAS-311HN, BAS-326H

3235B 1905B

3-12. Installing the eye guard

CAUTION

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

3-13. Installing the side cover and rear cover

3048B

3509B

3510B

3. INSTALLATION

(1) Bolt (loosen) (2) Eye guard (tilt forward) (3) Eye guard assembly (4) Plain washers [2 pcs.] (5) Bolts [2 pcs.]

After installing the eye guard assembly (3), return the eye guard (2) to its original angle, and then tighten the bolt (1) to secure it in place.

(1) Side cover (2) Screws [4 pcs.] (3) Rear cover (4) Screws [4 pcs.]

NOTE:

Be careful not to clamp the cords when installing the side cover and the rear cover.

BAS-311HN, BAS-326H

19

3. INSTALLATION

3-14. Lubrication

CAUTION

Do not connect the power cord until lubrication is complete. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

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. If the oil and grease get into your eyes or onto your skin, inflammation can result. Furthermore, do not drink or eat the lubricating oil or grease. They may cause diarrhea or vomiting. 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 <JX Nippon Oil & Energy Corporation Sewing Lube N10; 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. Fill the arm-side oil tank with oil.

2. Fill the bed-side oil tank with oil.

NOTE:

Be sure to fill the machine with oil when the oil level is down to about one-third full in the oil sight glass. If the oil drops below the one-third level, there is the danger that the machine may seize during operation.

20

BAS-311HN, BAS-326H

3682B

3539B

3. Pour oil in through the two holes of

the shuttle race base assembly so that the felt (1) is lightly moistened. If it is difficult to add oil, you can also remove the rubber plug (2) and pour in the oil through the hole.

NOTE:

・ The two pieces of felt (1) should

normally project by 0 to 0.5 mm from the hook race. Be careful not to push in the felt (1) when lubricating.

・ If there is no more oil on the felt

(1) of the shuttle race base assembly, problems with sewing may result.

3-15. Installing the machine head fixing bolt

When transporting the sewing machine, secure the machine head to the table with the machine head fixing bolts.

(1) Plain washers [2 pcs.] (2) Machine head fixing bolts [2 pcs.]

NOTE:

When operating the sewing machine, remove the machine head fixing bolts.

3570B

3-16. Checking the machine head switch

1. Turn on the power.

2. Check that no error numbers appear.

If the machine head switch (1) is not turned on, error [E050], [E051] or [E055] will occur.

Use the screw (2) to adjust the installation position of the machine head switch as shown in the illustration.

3. INSTALLATION

3054B

BAS-311HN, BAS-326H

21

4. PREPARATION BEFORE SEWING

4-1. Installing the needle

CAUTION

Turn off the power switch before installing the needle. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

1. Loosen the set screw (1).

2. Insert the needle (2) in a straight line as far as it will go, making sure that the long groove on the needle is at the front, and then securely tighten the set screw (1).

3057B

22

BAS-311HN, BAS-326H

4. PREPARATION BEFORE SEWING

4-2. Threading the upper thread

Thread the upper thread correctly as shown in the illustration below. * When using threading mode for threading, the thread can be threaded more easily.

Refer to <Threading mode> (P. 24)

[If using cotton thread or spun thread]

3559B

3059B

• Turn the machine pulley (2) and raise the thread take-up (3) to its highest position before threading the upper thread. (This will make threading easier and it will prevent the thread from coming out at the sewing start.)

• When threading the thread through the needle, allow a distance of approximately 42 mm between the needle hole and the end of the thread. If it is too long, the thread may become tangled, and if it is too short, the thread may pull out at the sewing start.

• If you would like to adjust the sensitivity of the thread breakage sensor, refer to "7-2. Adjusting the sensitivity of the thread

breakage sensor".

[If using synthetic thread]

Use the optional needle cooler unit.

Thread the upper thread

Needle cooler

3558B

BAS-311HN, BAS-326H

23

4. PREPARATION BEFORE SEWING

Threading mode is safe because the sewing machine will not start even when the foot switch is depressed.

1

2

Turn on the power.

Touch the Thread key on the screen.

3055B

Threading the thread.

3

Ending threading mode

4

The display will return to the previous screen.

• Work clamp will drop.

• The tension discs will open.

Touch the OK key on the screen.

• The work clamp will return to where it was before threading mode was started.

24

BAS-311HN, BAS-326H

4-3. Winding the lower thread

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

3443B

4. PREPARATION BEFORE SEWING

CAUTION

1. Place the bobbin onto the bobbin winder shaft (1).

2. Thread the thread as shown in the illustration, wind the

thread around the bobbin several times, and then press the bobbin presser arm (2).

3. Turn on the power.

4. Depress the foot switch to the second step.

(If using a two-pedal foot switch, lower the work clamp before depressing the start switch.) Home position detection will be carried out.

5. Touch the Wind key (4) on the screen.

6. The display will switch to the thread winding mode screen.

7. Check that the needle does not touch the work clamp, and

then depress the foot switch to the 2nd step. (If using a two-pedal foot switch, lower the work clamp before depressing the start switch.)

8. Keep depressing the foot switch until the lower thread stops

being wound onto the bobbin.

9. Once winding of the set amount of lower thread (80 - 90% of

the bobbin capacity) is completed, the bobbin presser arm (2) will return automatically.

10. Remove the bobbin, hook the thread onto the knife (3), and

then pull the bobbin in the direction of the arrow to cut the thread.

11. Touch the OK key (5) to return to the previous screen.

3550B

(4)

(5)

BAS-311HN, BAS-326H

25

4. PREPARATION BEFORE SEWING

3683B

3684B

Case A

Case B

Adjusting the bobbin winding amount Loosen the screw (6) and move the bobbin presser (7).

If the thread winds onto the bobbin unevenly

Loosen the set screw (8) and move the bobbin winder tension assembly (9) up and down to adjust. * For case A, move the bobbin winder tension assembly

(9) down, and for case B, move it upward.

26

BAS-311HN, BAS-326H

4. PREPARATION BEFORE SEWING

4-4. Installing the bobbin case

CAUTION

Turn off the power switch before installing the bobbin case. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

3066B

1. Pull the shuttle race cover (1) downward to open it.

2. While holding the bobbin so that the thread winds to the right, insert the bobbin into the bobbin case.

3. Pass the thread through the slot (2) and pull it out from the thread hole (3).

4. Check that the bobbin turns in the direction of the arrow when the thread is pulled.

5. Pass the thread through the lever thread hole (4), and then pull out approximately 30 mm of thread.

6. Hold the latch on the bobbin case and insert the bobbin case into the rotary hook.

2534Q

30 mm

2535Q

BAS-311HN, BAS-326H

27

4. PREPARATION BEFORE SEWING

4-5. Thread tension

[Thread tension reference]

Specifications

Upper thread #50 or similar #20 or similar #4 or similar

Lower thread #50 or similar #20 or similar #4 or similar

Medium-weight materials

(-03[])

Heavy-weight materials

(-05[])

Seatbelt (-07A)

Upper thread tension (N)

[Tension value]

Lower thread tension (N)

Pre-tension (N)

Needle DP x 5 #16 DP x 17 #19 DP x 17 #25

Normal sewing speed 2,000 sti/min 2,000 sti/min 1,300 sti/min

*1 This is the tension value when the pretension is 0.1 N.

0.8 − 1.2

[80 - 120]*1

0.2 − 0.3 1.0 − 1.5

0.1 − 0.3 0.1 − 0.6 0.3 − 0.6

1.4 − 1.8

[140 - 180]*1

1.2 − 2.0

4-5-1. Lower thread tension

Adjust the thread tension to the weakest possible tension by turning the thread tension nut (1) until the bobbin case will not drop by its own weight while the thread end coming out of the bobbin case is held.

Stronger

Weaker

2536Q

28

BAS-311HN, BAS-326H

4. PREPARATION BEFORE SEWING

4-5-2. Upper thread tension

4-5-2-1. Upper thread tension (Medium-weight materials specifications <-03[]>, Heavy-weight materials

specifications <-05[]>)

Use the digital tension to adjust the tension as appropriate for the material being sewn. (Refer to “Setting the tension value” below.) Turn the tension nut (1) (sub-tension) to adjust so that the upper thread trailing length is about 42 mm.

Stronger

Weaker

[Sewing operation screen]

4-5-2-2. Upper thread tension (Seatbelt specifications <-07A>)

1. Turn the tension nut (1) (main tension) to adjust the

tension as appropriate for the material being sewn.

2. Use the tension nut (2) (sub-tension) to adjust so that

the upper thread trailing length after thread trimming is about 42 mm.

Stronger

Weaker

3545B

Setting the tension value

Touch the △ and ▽ keys (2) on the sewing operation screen to increase or decrease the Tension value.

(2)

Stronger

Weaker

3067B

BAS-311HN, BAS-326H

29

4. PREPARATION BEFORE SEWING

4-6. Starting up

3068B

Aligned

2979B

Before turning on the power, check that the needle bar is at the needle up stop position.

Turn the pulley (1) in the direction of the arrow until the ridge at the bottom of the thread take-up (2) is aligned with the index mark.

Turn on the power. If a program has been registered, the program number and a preview of the sewing pattern will be displayed. No programs are registered at the time of shipment from the factory, and so "---" is displayed as the program number (No.).

For details on the sewing data reading method, refer to "3. USING STORAGE MEDIA" in the "LCD Panel/Operation Panel" Instruction Manual.

30

BAS-311HN, BAS-326H

5. SEWING

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.

Turn off the power switch at the following times. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

• When replacing the bobbin and 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.

5-1. Sewing

1st step

2nd step

WARNING

CAUTION

1. Turn on the power.

2. Touch the △ or ▽ key to select the number for the

program to be sewn.

* For details on reading sewing data from SD cards and

USB memory devices, refer to "3-4. Importing items of sewing data separately in the "LCD Panel/Operation Panel" Instruction Manual.

3. Depress the foot switch to the 2nd step.

(If using a two-pedal foot switch, lower the work clamp (2) before depressing the start switch (1).) Home position detection will be carried out.

4. Place the materials under the work clamp (2).

5. Depress the foot switch to the 1st step.

(If using a two-pedal foot switch, depress the work clamp switch (3).) The work clamp (2) will be lowered.

6. Depress the foot switch to the 2nd step.

(If using a two-pedal foot switch, depress the start switch

4441Q

3551B

(1).) The sewing machine will start sewing.

7. After sewing is completed, the thread trimmer will

operate. And then the work clamp (2) will be raised.

Use a work clamp which will hold the material securely so that it does not slip. If the material slips when using the standard work clamp and feed plate, process them so that the material does not slip.

5. SEWING

3552B

BAS-311HN, BAS-326H

31

5. SEWING

5-2. Using the STOP switch

If you press the emergency stop switch (1) to during actual sewing, an error dialog box will be displayed and the sewing machine will immediately stop.

3111B

(2)

1. Touch the Reset key (2).

• The thread will be trimmed, and then the error dialog box on the screen will disappear and the buzzer will stop.

2. A dialog box asking you to confirm if you want to continue sewing will be displayed.

(3) (4)

If the thread breaks or the lower thread runs out during sewing, you can then continue sewing from the point where the thread broke or ran out.

1

Touch "Yes" (3) to return to the resewing standby screen.

2

3

2nd step

If you do not wish to continue sewing, touch "No" (4). ・After home position detection is carried out, the mechanism will return to the sewing start position.

(5) (6)

Touch the to the position where sewing is to be resumed.

When you touch the

by 1 stitch, and when you touch the key (6), the feed will move forward by 1 stitch.

Depress the foot switch to the 2nd step. (If using a two-pedal foot switch, depress the start switch.) The sewing machine will start operating and sewing will start.

keys (5) and (6) on the screen to return

key (5), the feed will move backward

4441Q

32

BAS-311HN, BAS-326H

6. CLEANING

Turn off the power switch before carrying out cleaning. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

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. If the oil and grease get into your eyes or onto your skin, inflammation can result. Furthermore, do not drink or eat the lubricating oil or grease. They may cause diarrhea or vomiting. Keep the oil out of the reach of children.

6-1. Cleaning the rotary hook

6. CLEANING

CAUTION

3114B

3115B

1. Pull the shuttle race cover downward to open it, and then remove the bobbin case.

2. Open the setting claw (1) in the direction indicated by the arrow, and then remove the shuttle race base (2) and the shuttle hook (3).

3. Clean all the dust and lint from around the driver (4), the

top of the rotary hook thread guide and the shuttle race.

3116B

BAS-311HN, BAS-326H

33

6. CLEANING

6-2. Cleaning the control box air inlet ports

2309B

Use a vacuum cleaner to clean the filter in the air inlet ports (2) of the control box (1) at least once a month.

6-3. Draining the oil

6-4. Cleaning the eye guard

1. Remove and empty the waste oil tank (1) whenever it is full.

2. After emptying the waste oil tank (1), screw it back into its original position.

3117B

Wipe the eye guard clean with a soft cloth.

NOTE:

Do not use solvents such as kerosene or thinner to clean the eye guard.

3118B

6-5. Checking the needle

3119B

Always check that the tip of the needle is not broken and also that the needle is not bent before starting sewing.

6-6. Lubrication

Lubricate the sewing machine while referring to "3-14. Lubrication".

34

BAS-311HN, BAS-326H

6. CLEANING

6-7. Applying grease (Feed mechanism BAS-311HN)

If you are frequently sewing heavy-weight materials, using the sewing machine for long periods or using the sewing machine in places where there is a lot of dust, it is recommended that you apply grease to maintain the performance of the feed mechanism.

<Applying grease> Use Brother-specified “Grease unit (SB1275-101)”. Ask the place of purchase for details on obtaining these items.

1. Using the tube

3220B

2. Removing the feed plate

Loosen the two bolts (1), and then remove the feed plate (2).

NOTE:

Never loosen or remove any bolts other than the bolts which are securing the feed plate (2).

BAS-311HN, BAS-326H

3602B

35

6. CLEANING

3. Applying grease

3561B 3546B

Push the work clamp arm (3) all the way to the rear edge, and then apply grease to groove A.

Push the work clamp arm (3) all the way to the front edge, lift up the bellows (4), and then apply grease to groove B.

4. Install the feed plate. (Refer to “7-13. Installing the feed plate”.)

3225B 3562B

36

BAS-311HN, BAS-326H

7. STANDARD ADJUSTMENTS

CAUTION

7. STANDARD ADJUSTMENTS

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 before carrying out the following operations. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

• Inspection, adjustment and maintenance

• Replacing consumable parts such as the rotary

hook

7-1. Checking the machine head switch

Check that the machine head switch is turned on as shown in the illustration.

NOTE:

3547B

Hold the machine head with both hands when tilting it back or returning it to its original position. In addition, do not apply excessive force when tilting back the machine head. The sewing machine may become unbalanced and fall down, and serious injury or damage to the sewing machine may result.

If the power switch needs 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.

If the machine head switch is not turned on, errors "E050", "E051" and "E055" will be generated.

BAS-311HN, BAS-326H

37

7. STANDARD ADJUSTMENTS

7-2. Adjusting the sensitivity of the thread breakage sensor

1. Open the cover (1) and remove the upper thread from the photo sensor (2).

2. Turn the control (3) to the right <a> until the LED (4) illuminates.

3. Turn the control (3) to the left <b> until the LED (4) switches off.

4. Place the upper thread into the photo sensor (2), and close the cover (1).

NOTE:

• Thread breakages may be difficult to detect depending on

the thickness of the thread and the type of material being sewn. In such cases, turn the control (3) to adjust the sensitivity, or change the number of stitches for judgment of an upper thread breakage.

* Contact the place of purchase for information on

changing the number of stitches for judgment of an upper thread breakage.

• If foreign objects get into the photo sensor (2), it will not

be possible to detect thread breakages. Clean inside the photo sensor (2) to keep it free from dust and other foreign particles.

• If applying silicone to the thread, apply the silicone

between the thread breakage detector and the thread take-up. If silicone is applied to the thread before it passes through the photo sensor (2), the sensor window inside

3577B

the photo sensor (2) will become dirty and it will not be possible to detect thread breakages.

38

BAS-311HN, BAS-326H

7-3. Thread take-up spring

7. STANDARD ADJUSTMENTS

Specifications

Thread take-up spring

height (mm)

Thread take-up spring

tension (N)

Medium-weight materials

(-03[])

0.2 − 0.5 0.6 − 1.2 1.0 − 1.4

Heavy-weight materials

(-05[])

Seatbelt (-07A)

7 − 10 2 − 4

Loosen the set screw (1) and turn the adjuster to adjust.

Lower

Higher

3548B

1. Press the upper thread slightly above the tension bracket (2) with a finger to stop the thread spooling out.

2. Pull the upper thread downward so that the thread take-up spring (3) is extended to the same height as the base of the thread guide arm (4), and then measure the tension of the thread take-up spring (3).

3. Use a screwdriver to turn the tension stud (5) in order to adjust the tension of the thread take-up spring (3).

High

Low

3641B

NOTE:

If the thread tension spring is not adjusted correctly, the upper thread trailing length will be uneven after thread trimming.

7-4. Arm thread guide R

The standard position of arm thread guide R (1) is when the screw (2) is aligned with the index mark. Loosen the screw (2) and move arm thread guide R (1) to adjust.

More thread

Less thread

* When sewing heavy-weight material, move arm thread

guide R (1) to the left. (The thread take-up amount will become greater.)

* When sewing light-weight material, move arm thread

guide R (1) to the right. (The thread take-up amount will become smaller.)

Index mark

3123B

BAS-311HN, BAS-326H

39

7. STANDARD ADJUSTMENTS

7-5. Adjusting the needle bar height

2552Q 3124B

Turn the pulley in the direction of the arrow to move the needle bar to the lowest position. Then remove the rubber plug (2), loosen the screw (3) and then move the needle bar up or down to adjust so that the second reference line from the bottom of the needle bar (reference line A) is aligned with the lower edge of the needle bar bush (1). * If using a DP X 5 needle, align with the highest reference line (reference line a).

7-6. Adjusting the needle and rotary hook timing

3359B

3059B

Center of the needle

Tip

1. Turn the pulley (1) in the direction of the arrow to raise the needle bar from the lowest position until the lowest reference line on the needle bar (reference line B) is aligned with the lower edge of the needle bar bush (2). * If using a DP X 5 needle, align with the reference line b which is the second reference line from the top.

2. Loosen the bolt (3).

3. Move the driver (4) sideways so that the tip of the rotary hook is aligned with the middle of the needle, and then tighten the bolt (3).

3360B

0135Q

40

BAS-311HN, BAS-326H

7-7. Adjusting the driver (needle guard) position

7. STANDARD ADJUSTMENTS

0135Q

Turn the pulley in the direction of the arrow to align the tip of the rotary hook with the center of the needle, and then loosen the set screw (2) and adjust by moving the eccentric shaft (3) to adjust so that the driver (1) is touching the needle. The set screw (2) and the eccentric shaft (3) are on the right side of the bed at the rear.

NOTE:

If the driver (1) crosses the needle more than necessary, it will cause problems with the thread tension. Furthermore, if it does not cross the needle at all, the tip of the rotary hook will interfere with the needle and skipped stitches may occur.

Center of the needle

Tip

2980B

3452B

7-8. Adjusting the clearance between the needle and rotary hook tip

0138Q 3126B

Turn the pulley in the direction of the arrow to align the tip of the rotary hook with the center of the needle, and then loosen the set screw (1) and turn the eccentric shaft (2) to adjust so that the clearance between the needle and the tip of the rotary hook is 0.01 to 0.08 mm.

0.01 − 0.08 mm (Seatbelt: 0.1 – 0.2 mm)

7-9. Adjusting the shuttle race thread guide

Install the shuttle race thread guide (1) by pushing it in the direction of the arrow so that the needle groove is aligned with the center of the needle plate hole.

NOTE:

If the shuttle race thread guide (1) is in the wrong position, thread breakages, soiled thread or tangling of the thread may occur. The position of the shuttle race thread guide (1) is adjusted at the time of shipment from the factory. It should not be changed if possible.

BAS-311HN, BAS-326H

3574Q

41

7. STANDARD ADJUSTMENTS

7-10. Rotary hook lubrication amount

The optimum position is when the head of the set screw (1) is aligned with the edge of the bed. The rotary hook lubrication amount can be adjusted within three turns to the right from that position.

• If the set screw (1) is turned clockwise, the lubrication amount becomes smaller.

More oil

Less oil

• If the set screw (1) is turned counterclockwise, the lubrication amount becomes greater.

Aligned

3127B

7-11. Adjusting the position of the movable knife

3059B

3355B 3350B

3351B

Reverse position (position where driving lever is at its lowest point)

3352B

1. Open the top cover and tilt back the machine head.

2. Turn the pulley (1) by hand to move the needle bar to its lowest position.

3. Loosen the nut (2), tighten the set screw (5) until the collar (3) touches the inside of the groove in the thread trimmer cam (4), and then loosen the set screw (5) by approximately 1/4 of a turn.

4. Tighten the nut (2), and then check that the collar (3) is not touching the inside of the groove in the thread trimmer cam (4). In addition, push the driving lever (6) by hand toward the thread trimmer cam (4) until the collar (3) touches the groove of the thread trimmer cam (4), and then check that the driving lever (6) returns smoothly to its original position when it is released.

5. Turn the pulley (1) by hand in the direction of the arrow to move the needle bar to its lowest position, and push the thread trimming solenoid (7) as far as it will go.

6. With the collar (3) inserted into the groove of the thread trimmer cam (4), turn the pulley (1) by hand to set the driving lever (6) to the reverse position and so that the driving lever (6) is at its lowest point (when the thread take-up (8) is close to its lowest position).

42

BAS-311HN, BAS-326H

7. STANDARD ADJUSTMENTS

3353B

3354B

3356B

7. Loosen the two screws (9), and then remove the cover (10).

8. Loosen the bolt (11).

9. Move the movable knife connecting plate (13) back and forth to adjust so that the distance from the ridge on the right side

of the needle plate to the ridge on the movable knife (12) is 9.5 to 9.9 mm.

10. After tightening the bolt (11), check the above position once more.

* Ignore the index mark on the needle plate.

11. Replace the cover (10).

12. Check that there is a gap of about 0 - 1 mm between the outside of the hole in the movable knife (12) and the ridge line

on the shuttle race thread guide (14).

BAS-311HN, BAS-326H

43

7. STANDARD ADJUSTMENTS

7-12. Replacing the movable and fixed knives

3342B

1. Loosen the two bolts (1) and then remove the feed plate (2).

2. Open the shuttle race cover, remove the two screws (3) and the two flat screws (4), and then remove the needle plate (5).

3. Remove the movable knife (6) and the fixed knife (7).

1.0 mm

(Medium-weight material specifications <-03[]>,Heavy-weight material specifications <-05[]>)

2.5 mm (Seatbelt specifications <-07A>)

3262B

3263B

4. Install the new fixed knife (7) in the position shown in the illustration.

5. Apply grease to the outside of the collar (8) and to the shoulder screw (9), and then install the new movable knife (6) together with the thrust washer (10) and the movable knife spacer (11).

6. Check that the movable knife (6) and fixed knife (7) cut the thread cleanly. Replace the movable knife spacer with accessory spacers (t=0.2, 0.3, 0.4) so that the knives trim the thread accurately. * If the knife pressure is too weak and the thread is not completely cut, use a thinner movable knife spacer. * If the knife pressure is too strong and the movable knife (6) turns stiffly, use a thicker movable knife spacer.

7. Apply grease to the pin (12), place it into the movable knife connecting plate (13), and install it to the needle plate (5).

8. Check that the needle is aligned with the center of the needle hole.

44

BAS-311HN, BAS-326H

7-13. Installing the feed plate

NOTE:

Install the feed plate (1) so that the surface with the index mark (U) is facing upward.

7. STANDARD ADJUSTMENTS

Index mark

3563B

Place the rear edge of the feed plate (1) against the stepped part (A) of base plate Y (2) and use a 2 mm diameter pin (such as a DP needle) to align the hole in the feed plate (1) with the hole in base plate Y (2); then tighten the two bolts (3).

7-14. Adjusting the thread wiper

1. Loosen the two screws (3) and shift the entire solenoid setting plate (4) up or down to adjust so that the thread wiper (2) is 15 mm in front of the needle center when the plunger (1) of the thread wiper solenoid is driven to the full stroke.

2. Loosen the screw (5) and adjust the position of the thread wiper (2) so that the distance from the thread wiper to the tip of the needle is approximately 2 mm and the tip of the thread wiper (2) is approximately 3 mm from the center of the needle when the thread wiper (2) passes below the needle during operation.

NOTE: Check that the thread wiper (2) does not touch the finger guard.

Approx. 3 mm

Approx. 2 mm

5009Q5008Q3136B

BAS-311HN, BAS-326H

45

7. STANDARD ADJUSTMENTS

7-15. Intermittent presser foot installation position

Install the intermittent presser foot (1) with the screw (2) so that the distance from the bottom of the presser foot to the top of the needle plate is 22 mm when the sewing machine is stopped and the intermittent presser foot (1) is raised.

5031Q

7-16. Adjusting the intermittent presser foot

The intermittent presser foot stroke can be adjusted to within 2 − 10 mm by adjusting the position of the stepping clamp connecting rod and changing the installation position of stepping clamp link.

1. Remove the face plate.

2. Remove the two screws (1) and the two shoulder screws (2), and then remove stepping clamp link (3).

3. Change the installation position for stepping clamp link (3) to either A, B or C above. If the position of the stepping clamp connecting rod is adjusted as described in the following at any one of the installation positions, the adjustment range for the intermittent presser foot stroke will as given in the following table.

Installation position Intermittent presser foot stroke range

A

2 − 4.5 mm

5011Q3137B

46

B

C

0 mm (Intermittent presser foot does not move

4.5 − 10 mm

up and down)

BAS-311HN, BAS-326H

5012Q

7. STANDARD ADJUSTMENTS

5014Q

Index mark

3138B

5015Q

1. Loosen the screw (1), and then open the cover (2).

2. Loosen the nut (3), and then adjust the position of the stepping clamp connecting rod (4).

• When the stepping clamp connecting rod (4) is raised, the intermittent presser foot stroke will increase.

• When the stepping clamp connecting rod (4) is lowered, the intermittent presser foot stroke will decrease.

Next, adjust the needle bar and intermittent presser foot timing.

3. Turn the pulley in the direction of the arrow to raise the needle bar from the lowest position until the lowest reference line on the needle bar (reference line B) is aligned with the lower edge of the needle bar bush (5). (If using a DP x 5 needle, align with the second reference line from the top (reference line b).)

4. Open the top cover and loosen the two set screws (6).

5. Align the index marks of the stepping clamp cam (7) and the stepping clamp connecting rod (4), and then tighten the two set screws (6).

Check the following after changing the intermittent presser foot stroke.

3139B 3511B

Needle plate

1. With the intermittent presser foot (1) lowered, turn the pulley in the direction of the arrow to move the intermittent presser foot (1) to its lowest position.

2. Check that the presser foot (1) does not touch the needle plate and that the presser bar clamp (2) does not touch the presser bar bush (3).

<If they are touching> Remove the motor cover (4). Loosen the nut (5), and turn the bolt (6) until it is pressing against the intermittent drive lever (7), and then adjust until the two points mentioned above are not touching.

BAS-311HN, BAS-326H

47

7. STANDARD ADJUSTMENTS

7-17. Adjusting the work clamp lift amount

<Motor-driven work clamp specifications>

The LCD panel settings can be used to adjust the height to within 15 − 25 mm. (Refer to "1-5. Setting the work clamp lift amount" in the "LCD Panel/Operation Panel" Instruction Manual.)

The maximum lift amount for the work clamp is 30 mm above the surface of the needle plate.

1. Turn on the air, and then depress the work clamp switch (1) to raise the work clamp (2).

2. Loosen the two bolts (4) of the work clamp arm lever (3), and move the work clamp arm lever (3) up or down to adjust.

Max. 30 mm

3143B5018Q

7-18. Adjusting the air pressure

Lift up the handle (2) of the regulator (1) and then turn it to adjust the air pressure to 0.5 MPa. After adjustment is complete, push the handle (2) downward to lock it.

If water has collected in the bottle of the regulator (1), turn the drain cock (3) in the direction indicated by an arrow to drain the water.

NOTE:

Open the air cock (4) slowly.

1912B

48

BAS-311HN, BAS-326H

7. STANDARD ADJUSTMENTS

7-19. Setting method for standard depression strokes (foot switch)

The following procedure sets the operating positions for the treadle depression strokes to the standard values.

Signal setting entry

1

If you touch the settings key on the home screen, the display will change to the setting menu screen.

If you select Swing Machine Adjustment" from the setting menu screen, the display will change to the Sewing Machine Adjustment menu screen.

Select "Pedal Adjustment" from the Sewing Machine Adjustment menu screen.

Memorizing the maximum forward position

2

Depression voltage

BAS-311HN, BAS-326H

With the foot switch depressed all the way forward, wait until the depression voltage value stabilizes and then touch the OK key.

49

7. STANDARD ADJUSTMENTS

Memorizing the neutral position

3

Memorizing the maximum backward position

4

With your foot released from the foot switch, wait until the depression voltage value stabilizes and then touch the OK key.

With the foot switch depressed all the way backward, wait until the depression voltage value stabilizes and then touch the OK key.

Completion of setting

5

Tur n o ff th e power.

6

A finished message will be displayed.

NOTE:

If the foot switch operation is not carried out correctly, an error will be displayed. If this happens, repeat the operation from step 2.

50

BAS-311HN, BAS-326H

7. STANDARD ADJUSTMENTS

7-20. If processing the work clamps and the feed plate to a shape that

matches the sewing pattern

Process the work clamps and feed plate which match the sewing pattern, while referring to the processing diagram below. * Values in ( ) are the recommended sizes when sewing using the maximum area (BAS-311HN: 150x100 mm, BAS-326H:

220x100 mm).

BAS-311HN

Motor-driven work clamp specifications

Center of sewing area

Recommended thickness 1.5 mm

[mm]

Pneumatic work clamp specifications The left and right work clamps are symmetrical.

Center of sewing area

[mm]

Center of sewing area

[mm]

BAS-311HN, BAS-326H

3159B

51

7. STANDARD ADJUSTMENTS

BAS-326H

The left and right work clamps are symmetrical.

Recommended thickness 1.5 mm

Center of sewing area

3513B

52

[mm]

Center of sewing area

3519B

BAS-311HN, BAS-326H

8. LIST OF ERROR CODES

DANGER

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

If a malfunction occurs with the sewing machine, a buzzer will sound and an error code will appear on the screen. Follow the remedy procedure to eliminate the cause of the problem.

Switch-related errors

Code Cause of error and remedy

E010

E011

E012

E015

E016

E020

E025

E035

E050

E051

E055

E064

E065

The STOP switch was pressed. Press the RESET key to clear the error. The STOP switch was pressed. Press the RESET key to clear the error.

You can touch the The STOP switch was pressed. Press the RESET key to clear the error, and then depress the start switch to move the feed mechanism to the home position. The stop switch was still being pressed when the power was turned on, or there is a problem with the stop switch connection. Turn off the power, and then check that connector P9 on the main P.C. board is properly connected. Problem with the stop switch connection. Turn off the power, and then check that connector P9 on the main P.C. board is properly connected. The start switch was pressed without the work clamp being lowered. First lower the work clamp. Start switch was being depressed when power was turned on. (For a foot switch, the foot switch was being depressed to the 2nd step.) Release the switch. (For a foot switch, if E025 is not cleared even when the switch is released, readjust the depression stroke. Refer to P.49 - P.50.) Work clamp switch was being depressed when power was turned on. (For a foot switch, the foot switch was being depressed to the 1st step.) Release the switch. (For a foot switch, if E035 is not cleared even when the switch is released, readjust the depression stroke. Refer to P.49 - P.50.) Machine head tilting was detected after the power was turned on. Turn off the power, and then return the machine head to its original position. Check that connector P14 on the main P.C. board is properly connected. Machine head tilting was detected while the sewing machine was operating. Turn off the power, and then check that connector P14 on the main P.C. board is properly connected. Machine head tilting was detected when the power was turned on. Turn off the power, and then return the machine head to its original position. Check that connector P14 on the main P.C. board is properly connected. Touch panel was being touched when power was turned on. Release the touch panel. A key on the LCD panel was still being pressed when the power was turned on, or key is faulty. Release the key.

keys on the LCD panel to move the feed in order to continue sewing.

BAS-311HN, BAS-326H

53

8. LIST OF ERROR CODES

Motor-related errors

Code Cause of error and remedy

E110

The needle bar is not stopped in the needle up stop position. Turn the pulley until the point where the error display disappears. Upper shaft did not stop at the needle up stop position when the sewing machine stopped.

E111

Turn off the power, and then check that connectors P11 and P1 on the motor P.C. board and connector P6 on the main P.C. board are properly inserted.

E121

Thread trimming was not completed. Turn off the power, and then check if the cutting edges of the fixed knife and movable knife are damaged or worn. Upper shaft motor stopped due to a problem, or synchronizer is faulty.

E130

Turn off the power, and then turn the pulley and check if the sewing machine has locked up. Check that connectors P11 and P1 on the motor P.C. board, connector P6 on the main P.C. board and the 4-pin connector of the upper shaft motor on the motor P.C. board are properly inserted.

E131

Synchronizer is not connected correctly. Turn off the power, and then check that connector P11 on the motor P.C. board is properly connected. Problem detected with upper shaft motor operation.

E132

Turn off the power, and then check that connectors P11 and P1 on the motor P.C. board, connector P6 on the main P.C. board and the 4-pin connector of the upper shaft motor on the motor P.C. board are properly inserted. Upper shaft motor stopping position is incorrect.

E133

Turn off the power, and then check that connectors P11 and P1 on the motor P.C. board, connector P6 on the main P.C. board and the 4-pin connector of the upper shaft motor on the motor P.C. board are properly inserted. Upper shaft motor is overheating, or temperature sensor is faulty.

E150

Turn off the power, and then check the upper shaft motor. (When sewing data with a small number of stitches (15 stitches or less) is sewn repeatedly (short cycle operation), the upper shaft motor may overheat and the “E150” error code may be generated.)

54

BAS-311HN, BAS-326H

Feed mechanism-related errors

Code Cause of error and remedy

X-feed motor home position cannot be detected. Problem with X-feed motor or poor X home position sensor

E200

connection. Turn off the power, and then check that connectors P17, P21 and P8 on the main P.C. board are properly connected. X-feed motor stopped due to a problem.

E201

Turn off the power, and then check if there are any problems in the X-feed direction. Turn off the power, and then check that connectors P17 and P21 on the main P.C. board are properly connected. X-feed motor stopped due to a problem during sewing.

E204

Turn off the power, and then check if there are any problems in the X-feed direction. Turn off the power, and then check that connectors P17 and P21 on the main P.C. board are properly connected. X-feed motor stopped due to a problem while moving to the sewing start position.

E205

Turn off the power, and then check if there are any problems in the X-feed direction. Turn off the power, and then check that connectors P17 and P21 on the main P.C. board are properly connected. X-feed motor stopped due to a problem during test feeding.

E206

Turn off the power, and then check if there are any problems in the X-feed direction. Turn off the power, and then check that connectors P17 and P21 on the main P.C. board are properly connected. Y-feed motor home position cannot be detected. Problem with Y-feed motor or poor Y home position sensor

E210

connection. Turn off the power, and then check that connectors P18, P22 and P8 on the main P.C. board are properly connected. Y-feed motor stopped due to a problem.

E211

Turn off the power, and then check if there are any problems in the Y-feed direction. Turn off the power, and then check that connectors P18 and P22 on the main P.C. board are properly connected. Y-feed motor stopped due to a problem during sewing.

E214

Turn off the power, and then check if there are any problems in the Y-feed direction. Turn off the power, and then check that connectors P18 and P22 on the main P.C. board are properly connected. Y-feed motor stopped due to a problem while moving to the sewing start position.

E215

Turn off the power, and then check if there are any problems in the Y-feed direction. Turn off the power, and then check that connectors P18 and P22 on the main P.C. board are properly connected. Y-feed motor stopped due to a problem during test feeding.

E216

Turn off the power, and then check if there are any problems in the Y-feed direction. Turn off the power, and then check that connectors P18 and P22 on the main P.C. board are properly connected. Feed motor stopped due to a problem.

E230

Reduce the sewing speed or change the operation settings to the settings for heavy-weight materials. Ask the place of purchase for details on the setting method.

8. LIST OF ERROR CODES

Work clamp-related errors

Code Cause of error and remedy

Work clamp home position cannot be detected. Problem with work clamp motor or poor work clamp home

E300

E301

position sensor connection. Turn off the power, and then check that connectors P19, P23 and P8 on the main P.C. board are properly connected. Work clamp raised or lowered position cannot be detected. Turn off the power, and then check if there are any problems in the work clamp vertical direction. Turn off the power, and then check that connectors P19 and P23 on the main P.C. board are properly connected.

BAS-311HN, BAS-326H

55

8. LIST OF ERROR CODES

Communication and memory-related errors

Code Cause of error and remedy

Communication error detected between the main P.C. board and the panel P.C. board when the power was turned on.

E400

Turn off the power, and then check that connector P10 on the programmer main P.C. board inside the LCD panel and the connector on the right side of the control box and connectors P2 and P3 on the motor P.C. board are properly connected. Communication error detected between the main P.C. board and the motor P.C. board when the power was turned on.

E401

Turn off the power, and then check that connector P10 on the programmer main P.C. board inside the LCD panel and the connector on the right side of the control box and connectors P2 and P3 on the motor P.C. board are properly connected. Communication error detected between the main P.C. board and the panel P.C. board.

E410

Turn off the power, and then turn it back on again. Turn off the power, and then check that connector P10 on the programmer main P.C. board inside the LCD panel and the connector on the right side of the control box and connectors P2 and P3 on the motor P.C. board are properly connected. Communication error detected between the main P.C. board and the motor P.C. board.

E411

Turn off the power, and then turn it back on again. Turn off the power, and then check that connector P10 on the programmer main P.C. board inside the LCD panel and the connector on the right side of the control box and connectors P2 and P3 on the motor P.C. board are properly connected. No storage media is inserted.

E420

Press the RESET key to clear the error. Insert the storage media and then try again. The program number is invalid or it has no corresponding data.

E421

Press the RESET key to clear the error. Check that data for this program number is present on the storage media. Error occurred while reading from storage media.

E422

Check the data. Press the RESET key to clear the error. Check the data in the storage media. Insufficient space in storage media.

E424

Press the RESET key to clear the error. Use different storage media. Error occurred while writing to storage media.

E425

Check the storage media. The card may be write-protected. Press the RESET key to clear the error. Use the specified storage media.

E427

E430

E440

E450

The program containing the specified cycle program has been cleared. Press the RESET key to clear the error. Redo the cycle program. Data cannot be backed up to the main P.C. board (flash memory). Turn off the power, and then turn it back on again. Data cannot be backed up to the main P.C. board (EEPROM). Turn off the power, and then turn it back on again. Model selection cannot be read from the machine head memory. Turn off the power, and then check that connector P16 on the main P.C. board is properly connected. Machine head memory is not connected.

E452

Turn off the power, and then check that connector P16 on the main P.C. board is properly connected. * If you press the RESET key to clear the error, you can restart the machine using the backup data in the

machine head memory.

E453

E471

E474

Problem with data in machine head memory. Turn off the power, and then turn it back on again. The program number is invalid or it has no corresponding data. Check that data for this program number is present in the internal memory. Internal memory is full and copying is not possible. Press the RESET key to clear the error. Clear the sewing data.

56

BAS-311HN, BAS-326H

Data editing-related errors

Code Cause of error and remedy

The enlargement ratio setting caused the sewing data to extend outside the sewing area.

E500

Set the enlargement ratio again. Press the RESET key to clear the error.

E502

The enlargement ratio caused the data pitch to exceed the maximum pitch of 12.7 mm. Press the RESET key to clear the error. Set the enlargement ratio again. Error in sewing data.

E510

Press the RESET key to clear the error. If an error occurs while reading or revising the sewing data, revise the data.

E511

E512

No end code has been input into pattern data. Press the RESET key to clear the error. Number of stitches exceeds allowed maximum. Press the RESET key to clear the error. Extended option output number already exists.

E520

Change the extended option output number. If not using the extended option output, initialize the data to clear the extended option output data. Memory switch file cannot be read correctly.

E581

The model for the data which was read does not match the model being written to. Press the RESET key to clear the error. Read data for the same sewing machine model.

E582

E583

Memory switch versions do not match. Press the RESET key to clear the error. Read data for the same version. User program versions do not match. Press the RESET key to clear the error. Read data for the same version.

8. LIST OF ERROR CODES

Device-related errors

Code Cause of error and remedy

E600

E670

Upper thread breakage occurred. Thread the upper thread. Re-sewing is then possible. Turn off the power, and then check that connectors P9 and P36 on the main P.C. board are properly connected. Problem with the lower thread detector. Turn off the power, and then check the lower thread detector.

BAS-311HN, BAS-326H

57

8. LIST OF ERROR CODES

P.C. board-related errors

Code Cause of error and remedy

E700

E701

E705

Abnormal rise in power supply voltage. Turn off the power, and then check the input voltage. Abnormal rise in upper shaft motor drive voltage. Turn off the power, and then check the voltage. Abnormal drop in power supply voltage. Turn off the power, and then check the input voltage. Abnormal current detected in upper shaft motor.

E710

Turn off the power, and then check if there are any problems with the sewing machine. Turn off the power, and then check that connectors P11 and P1 on the motor P.C. board, connector P6 on the main P.C. board and the 4-pin connector of the upper shaft motor on the motor P.C. board are properly inserted.

E711

E730

Abnormal current detected in pulse motor. Turn off the power, and then check if there are any problems with the work clamp operation. External error input (AIRSW) detected. Turn off the power, and then check the air pressure.

Version updating-related errors

Code Cause of error and remedy

E860

E870

E880

E881

E883

E884

E887～

E890

No main control program is present. Install the main control program. No panel control program is present. Install the panel control program. Version update requests cannot be received. Turn off the power, and then turn it back on again. Version updating did not complete normally. Turn off the power, and then repeat the version update procedure. No control program is present in the storage media. Check that the control program has been saved into the correct folder. There is a problem with the control program. Write the correct file into the storage media.

Version updating could not be carried out. Turn off the power, and then turn it back on again.

If an error code that is not listed above appears or if carrying out the specified remedy does not solve the problem,

contact the place of purchase.

58

BAS-311HN, BAS-326H

9. TROUBLESHOOTING

・ Please check the following points before calling for repairs or service. ・ If the following remedies do not fix the problem, turn off the power and consult a qualified technician or the place of

purchase.

CAUTION

Turn off the power switch and disconnect the power cord before carrying out these operations. The machine may operate if the foot switch is depressed by mistake, which could result in injury.

Problem Cause Remedy

Sewing machine does not start when the power is turned on and the foot switch is depressed.

Work clamp does not work.・Work clamp

* Pneumatic work clamp

specifications only

Thread wiper does not work.

Work clamp does not rise to the maximum height.

Work clamp pressure is too weak.

* Pneumatic work clamp

specifications only

Work clamp pressure is not uniform at front and back of work clamp.

Reference

Check if the machine head switch cord is disconnected.

Adjust the position of the machine head

Machine head switch does not work.

Air cock is closed. Open the air cock. P. 48

Air pressure is too weak.

Speed controller has been tightened too far.

Thread wiper setting is OFF. Set the thread wiper setting to ON. *

Work clamp arm lever position is incorrect. *Pneumatic work clamp specifications

Work clamp arm assembly stopper position is incorrect. *Motor-driven work clamp

specifications

Air pressure is too weak.

Work clamp is tilted. Adjust the tilt of the work clamp.

switch.

If the machine head switch is malfunctioning, replace it with a new one.

Adjust the regulator so that the air pressure is about 0.5 MPa.

Adjust the speed controller by loosening it 4 turns from the fully-tightened position.

Adjust the position of the work clamp arm lever.

Adjust the position of the work clamp arm assembly stopper.

Adjust the regulator so that the air pressure is about 0.5 MPa.

P. 10

P. 8

P. 37

P. 48

P. 18

P. 48

The thread wiper is obstructing the

Thread wiper does not operate correctly.

needle.

Thread wiper position is incorrect.

* Refer to the “LCD Panel/Operation Panel” Instruction Manual.

BAS-311HN, BAS-326H

Adjust the height of the thread wiper. P. 45

Adjust the operating stroke of the thread wiper.

(Continued on next page)

P. 45

59

9. TROUBLESHOOTING

Problem Cause Remedy

Lower thread winds to one side.

Lower thread winding amount is incorrect.

Thread unraveling at sewing start.

Reference

Height of bobbin winder tension assembly is incorrect.

Bobbin presser position is incorrect.

Needle is too thick.

Upper thread trailing length is too short.

Amount of lower thread being fed out from bobbin is too small.

Sewing start speed is too fast. Adjust the sewing start speed. *

Rotary hook tip is missing. Replace the part.

Needle is too thin.

Needle is too thick.

Adjust the height of the bobbin winder tension assembly.

Adjust the position of the bobbin presser.

Select a needle that is suitable for the sewing conditions.

When threading the thread through the needle, allow a distance of approximately 42 mm between the needle hole and the end of the thread. Adjust the sub-tension so that the upper thread trailing length after thread trimming is approximately 42 mm.

Set the feeding amount to approximately 30 mm.

Select a needle that is suitable for the sewing conditions.

P. 26

P. 28

P. 23

P. 29

P. 27

P. 28

Skipped stitches occur.

Needle is bent. Replace the needle. P. 22

Needle is not installed correctly.

Needle and rotary hook tip are touching.

Clearance between needle and rotary hook tip is too large.

Needle and rotary hook timing is incorrect.

Material is flapping.

Install the needle so that it faces correctly.

Adjust the driver needle guard. P. 41

Adjust the needle clearance. P. 41

Adjust the timing. P. 40

Replace the needle hole plate with one with a smaller needle diameter.

Use a thinner feed plate. * Recommended thickness: 1.5 mm

Process the work clamps and the feed plate into shapes that can hold the material near the seam.

Adjust the intermittent height of the intermittent presser foot.

(Continued on next page)

P. 22

P. 51 P. 52

*

60

BAS-311HN, BAS-326H

9. TROUBLESHOOTING

Problem Cause Remedy

Upper thread is breaking.

Lower thread is breaking.

Reference

Thread is too thick for the needle.

Needle is not installed correctly.

Thread is not threaded correctly. Thread the thread correctly.

Damage or burring in parts such as the rotary hook, needle hole plate, needle or thread path.

Needle and rotary hook timing is incorrect.

Upper thread tension is too strong. Reduce the upper thread tension. P. 29

Thread take-up spring tension is too strong.

Thread breaks due to heat.

Damage to the needle hole plate or bobbin case.

Lower thread tension is too strong. Reduce the lower thread tension.

Select a thread which is suitable for the needle.

Install the needle so that it faces correctly.

Repair the respective part by buffing it. Alternatively, replace the part.

Adjust the timing. P. 40

Reduce the tension of the thread take-up spring.

Use a needle cooler unit (optional). Reduce the sewing speed.

Repair the respective part by buffing it. Alternatively, replace the part.

P. 28

P. 22

P. 23

P. 39

P. 23

*

P. 28

Needle breaks.

Upper thread is not cut.

Needle is bent. Replace the needle. P. 22

Needle is too thin.

Needle and rotary hook tip are touching.

Needle and rotary hook timing is incorrect.

Feed timing is too slow. Advance the feed timing.

Movable knife is blunt.

Fixed knife is blunt.

Movable knife is not picking up the upper thread.

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

Select a needle that is suitable for the sewing conditions.

Adjust the driver needle guard. P. 41

Adjust the needle clearance. P. 41

Adjust the timing. P. 40

Replace the movable knife with a new one.

Sharpen the fixed knife or replace it with a new one.

Adjust the timing. P. 40

Adjust the standby position of the movable knife.

Refer to "Skipped stitches occur". P. 60

P. 28

P. 44

P. 42 P. 43

Lower thread is not cut.

Lower thread tension is too weak. Increase the lower thread tension.

(Continued on next page)

BAS-311HN, BAS-326H

P. 28

61

9. TROUBLESHOOTING

Problem Cause Remedy

Upper thread is not tight.

Needle is too thin.

Hole diameter in needle hole plate is too small.

Feed plate is too thin.

Hole diameter of intermittent presser foot is too small.

Sliding parts of outer rotary hook and inner hook have little or no sewing machine oil. Damage or burring in parts such as the rotary hook, needle hole plate, needle or thread path.

Select a needle that is suitable for the sewing conditions.

Replace the needle hole plate with one with a larger hole diameter.

Use a thicker feed plate. *Recommended thickness: 1.5 mm

Replace the intermittent presser foot with one with a larger hole diameter.

Lubricate the felts for the sliding parts of the outer rotary hook and inner hook.

Repair the respective part by buffing it. Alternatively, replace the part.

Lower thread tension is too strong. Reduce the lower thread tension.

Increase the upper thread tension.

Upper thread tension is too weak.

*Adjust the upper thread tension after

adjusting the lower thread tension.

Thread take-up spring tension is too weak.

Increase the tension of the thread take-up spring.

Feed timing is too fast. Retard the feed timing.

Reference

P. 28

P. 20

P. 28

P. 29

P. 39

0573M

Lower thread is not tight.

0574M

Poor seam finish on underside of material at the sewing start.

Upper thread trailing length is irregular.

Pattern is distorted.

Intermittent height of intermittent presser foot is too low.

Needle and rotary hook tip are

Adjust the intermittent height of the intermittent presser foot.

*

Adjust the driver needle guard. P. 41

touching.

Adjust the needle clearance. P. 41

Lower thread tension is too weak. Increase the lower thread tension.

P. 28

Reduce the upper thread tension.

Upper thread tension is too strong.

*Adjust the upper thread tension after

P. 29

adjusting the lower thread tension.

Adjust the sub-tension so that the

Upper thread trailing length is too long.

upper thread trailing length after thread

P. 29

trimming is approximately 42 mm.

Movable knife is blunt.

Fixed knife is blunt.

Replace the movable knife with a new one.

Sharpen the fixed knife or replace it with a new one.

P. 44

Sub-tension is too weak. Adjust the sub-tension. P. 29

Thread take-up spring tension is too weak.

Increase the tension of the thread take-up spring.

P. 39

If using a heavy work clamp and feed

Work clamp and feed plate are too heavy.

plate, change the operation settings to the settings for heavy-weight materials. Ask the place of purchase for details on the setting method.

62

BAS-311HN, BAS-326H

INSTRUCTION MANUAL

* Please note that the contents of this manual may differ slightly from the actual product purchased as a result of product improvements.

This is the original instructions.

BAS-311HN, BAS-326H

I5041049B E

2015.08. B (1)

Brother BAS-326H, BAS-311HN User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY INSTRUCTIONS

[1] Safety indications and their meanings

[2] Notes on safety

[3] Warning labels

CONTENTS

1. NAMES OF MAJOR PARTS

2. SPECIFICATIONS

3. INSTALLATION

3-1. Table processing diagram

3-2. Installing the control box

3-3. Installing the oil pan

3-4. Installing the machine head

3-5. Installing the LCD panel

3-6. Installing the two-pedal foot switch

3-7. Connecting the cords

3-8. Connecting the ground wire

3-9. Connecting the power cord

3-10. Installing the cotton stand

3-11. Installing the pneumatic unit (pneumatic work clamp specifications)

3-12. Installing the eye guard

3-13. Installing the side cover and rear cover

3-14. Lubrication

3-15. Installing the machine head fixing bolt

3-16. Checking the machine head switch

4. PREPARATION BEFORE SEWING

4-1. Installing the needle

4-2. Threading the upper thread

4-3. Winding the lower thread

4-4. Installing the bobbin case

4-5. Thread tension

4-5-1. Lower thread tension

4-5-2. Upper thread tension

4-5-2-2. Upper thread tension (Seatbelt specifications <-07A>)

4-6. Starting up

5. SEWING

5-1. Sewing

5-2. Using the STOP switch

6. CLEANING

6-1. Cleaning the rotary hook

6-2. Cleaning the control box air inlet ports

6-3. Draining the oil

6-4. Cleaning the eye guard

6-5. Checking the needle

6-6. Lubrication

6-7. Applying grease (Feed mechanism BAS-311HN)

7. STANDARD ADJUSTMENTS

7-1. Checking the machine head switch

7-2. Adjusting the sensitivity of the thread breakage sensor

7-3. Thread take-up spring

7-4. Arm thread guide R

7-5. Adjusting the needle bar height

7-6. Adjusting the needle and rotary hook timing

7-7. Adjusting the driver (needle guard) position

7-8. Adjusting the clearance between the needle and rotary hook tip

7-9. Adjusting the shuttle race thread guide

7-10. Rotary hook lubrication amount

7-11. Adjusting the position of the movable knife

7-12. Replacing the movable and fixed knives

7-13. Installing the feed plate

7-14. Adjusting the thread wiper

7-15. Intermittent presser foot installation position

7-16. Adjusting the intermittent presser foot

7-17. Adjusting the work clamp lift amount

7-18. Adjusting the air pressure

7-19. Setting method for standard depression strokes (foot switch)

8. LIST OF ERROR CODES

9. TROUBLESHOOTING