Brother International S-7220B Instruction Manual - English
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- Brother International S-7220B | Instruction Manual - English - Page 1
S-7220B INSTRUCTION MANUAL 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 - Brother International S-7220B | Instruction Manual - English - Page 2
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 - Brother International S-7220B | Instruction Manual - English - Page 3
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 example, the symbol at left means "you must make the ground connection".) S-7220B i - Brother International S-7220B | Instruction Manual - English - Page 4
requirements Use the sewing machine in problems with correct operation. 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 7220B - Brother International S-7220B | Instruction Manual - English - Page 5
the oil out of the reach of children. Use only the proper replacement parts as specified by Brother. 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 - Brother International S-7220B | Instruction Manual - English - Page 6
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 Be sure to connect the ground. If - Brother International S-7220B | Instruction Manual - English - Page 7
needle and rotary hook timing 55 13-11. Adjusting the treadle 56 13-12. Adjusting the presser foot floating amount (minute lifting amount 56 14. TROUBLESHOOTING 57 14-1. Sewing 57 14-2. Error code displays 62 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 8
PARTS 1. NAMES OF MAJOR PARTS (1) Bobbin winder (3) Lifting lever (5) Presser foot (7) Control box panel (9) Power switch (11) Reverse lever (13) Machine pulley (15) Cotton stand Safety devices (16) Thread take-up cover (2) Thread wiper (4) Quick reverse (Actuator) (6) Control box (8) Knee lifter - Brother International S-7220B | Instruction Manual - English - Page 9
SPECIFICATIONS Quick reverse Thread wiper 2. MACHINE SPECIFICATIONS 4 O O Lubrication type 0 Minimum lubrication 3 Semi dry 3 5 Use For medium-weight For heavy-weight materials materials Max. sewing speed -403 5,000 rpm*1 -433 4,000 rpm Start backtacking and continuous backtacking - Brother International S-7220B | Instruction Manual - English - Page 10
your Brother dealer or a qualified electrician for any electrical work that may need to be done. The sewing machine weighs sewing machine. The sewing machine should be plugged directly into an AC wall outlet. Operation problems may result if extension cords are used. Carrying the machine The machine - Brother International S-7220B | Instruction Manual - English - Page 11
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 Head pcs] (4) Spring washers [3 pcs] (5) Washers [3 pcs] 2. Connecting rod (6) Connecting rod (7) Nut 2091M S-7220B 4 - Brother International S-7220B | Instruction Manual - English - Page 12
(left) [2 pcs] (2) Head cushions (right) [2 pcs] (3) Oil pan 3632M 5. Rubber cushions (1) Rubber cushions [2 pcs] (2) Nails [4 pcs] 6. Knee lifter complying bar (3) Knee lifter complying bar 2094M 5 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 13
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. 3724M 8. Operation panel [2 pcs.] (The washers (5), spring washers (6) and screws (7) are used to secure the side plate) 3725M 9. Sticker (Remove) (1) Sticker 2097M - Brother International S-7220B | Instruction Manual - English - Page 14
bolt (3) and move the knee lifter plate (1) to a position where it is easy to use. 3637M 1. Turn the machine pulley so that the feed dog is below the top of the needle plate. 2. Lower the pressed. 3. After adjustment is completed, securely tighten the nut (9). 7 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 15
the scissors may result. 3640M The sewing machine should always be lubricated and the oil supply replenished before it is used for the first time, and also after long periods of non-use. Use only the lubricating oil (Nisseki Mitsubishi Sewing Lube 10N; VG10) specified by Brother. * If this type of - Brother International S-7220B | Instruction Manual - English - Page 16
can result in severe injury. CAUTION Contact your Brother dealer or a qualified electrician for any electrical work problems with correct operation may also occur. 3-4-1. Opening the control box cover (1) Screw (2) Cover 3-4-2. Connecting the cords 3642M 1. Sewing machine cords 3729M 9 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 17
. All cords that come out from the control box should be secured to the cord holder (3) using the repeat cable tie (1), otherwise vibration from the sewing machine may cause the cords to become disconnected, which can cause problems with the operation of the control box. Cords 3645M S-7220B 10 - Brother International S-7220B | Instruction Manual - English - Page 18
green and yellow wire is the ground wire.) 2. Insert the plug into a properly-grounded AC power supply. NOTE: Do not use extension cords, otherwise machine operation problems may result. Green and yellow wire (ground wire) Ground symbol 2112M 4. Ground wire (1) Ground wire (2) Screw [With washer - Brother International S-7220B | Instruction Manual - English - Page 19
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. 2114M 1. Turning on the power out and the needle then rises above the needle plate and stops. 2117M S-7220B 12 - Brother International S-7220B | Instruction Manual - English - Page 20
4. PREPARATION BEFORE SEWING 4. PREPARATION BEFORE SEWING 4-1. Installing the needle CAUTION Turn off the power switch before installing the needle. The machine may operate if the treadle is depressed by mistake, which could result in injury. Front 1. Turn the machine pulley to move the needle bar - Brother International S-7220B | Instruction Manual - English - Page 21
SEWING 4-3. Winding the lower thread CAUTION 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 machine may operate if machine it out from the thread guide (3). 4. Check that the - Brother International S-7220B | Instruction Manual - English - Page 22
machine pulley and raise the thread take-up (1) before threading the upper thread. This will make threading easier and it will prevent the thread from coming out at the sewing will be. (The numbers on the dial are for use as a guide. The length of the finished stitches may vary depending on 7220B - Brother International S-7220B | Instruction Manual - English - Page 23
BEFORE SEWING Press the thread wiper switch (1) to the side. If this is done, the thread wiper (2) will operate after the thread is trimmed. 2129M 4-8. Using the knee lifter 3739M 2209M The presser foot (2) can be raised by pressing the knee lifter plate (1). 2131M 3740M S-7220B 16 - Brother International S-7220B | Instruction Manual - English - Page 24
USING THE OPERATION PANEL (BASIC OPERATIONS) 5-1. Names and functions • The operation panel keys cannot be operated while sewing is in progress. Select the keys and set the number of stitches before starting sewing key These keys are used to set the sewing machine sews a full cycle - Brother International S-7220B | Instruction Manual - English - Page 25
USING THE OPERATION PANEL (BASIC OPERATIONS) (6) Fixed stitch key When this key is pressed so that the indicator illuminates, the number of stitches (1-1999) in the E stitch number display is sewn, and then the sewing machine set for use together with sewing machine sewing machine sewing machine is - Brother International S-7220B | Instruction Manual - English - Page 26
before sewing of the set number of start backtack stitches is complete, end backtacking will not be carried out. • If the indicator of the thread trimming lock key is illuminated, the sewing machine will stop in the needle up position without thread trimming being carried out. 2160M 19 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 27
the sewing machine sewing> When the AUTO key is pressed to turn on the automatic sewing function, operation will be carried out automatically from continuous backtack sewing through to thread trimming just by depressing the treadle once, without needing to keep it depressed continuously. S-7220B - Brother International S-7220B | Instruction Manual - English - Page 28
5. USING THE OPERATION PANEL (BASIC OPERATIONS) 5-4. Sewing fixed stitches 0827M 1 2161M Example: From 1 to 1999 stitches can be set. 2 After the set number of stitches in E (fixed stitches) have been sewn, the sewing machine stops in the needle position that has been set by the needle up/down - Brother International S-7220B | Instruction Manual - English - Page 29
- Brother International S-7220B | Instruction Manual - English - Page 30
pleat presser stitches 2163M 1 Example: 2164M 2 3 These functions cannot be used. From 1 to 1999 stitches can be set. If the treadle is continuously depressed and then you press the actuator while sewing is in progress, the number of backtack - Brother International S-7220B | Instruction Manual - English - Page 31
thread counter The lower thread counter can be used to let you know approximately how much lower thread is remaining. The value displayed by the lower thread counter display is reduced by 1 from the initial setting value each time the sewing machine sews 10 stitches, and a warning is given when the - Brother International S-7220B | Instruction Manual - English - Page 32
. 6-1. Names and functions These are used for making advanced operating settings. They should only be used by a technician. 2171M (18) that the correction icon (21) illuminates, correction sewing can be carried out. If the sewing machine is stopped, sewing will be carried out at slow speed (220 - Brother International S-7220B | Instruction Manual - English - Page 33
ENTER key (4) This key is used to accept function settings. MAX key (5) This key is used to change the maximum sewing speed. * Refer to the Service Manual for details on using these keys. 2212M 6-4. Resetting all . Once the above display appears, normal operation will then be possible. S-7220B 26 - Brother International S-7220B | Instruction Manual - English - Page 34
control box panel will not operate when the machine head operation panel is connected. 7-1. Names and functions Power indicator 3133M The power indicator illuminates when the power switch is turned on. (1) Speed control • This lets you adjust the sewing speed when the treadle is fully depressed - Brother International S-7220B | Instruction Manual - English - Page 35
7. USING THE CONTROL BOX PANEL (BASIC OPERATIONS) 7-2. Sewing start and end backtacking and continuous backtacking and locking thread trimming Thread trimming not locked (3) to set the mode in the bottom row of the stitch number display. 3661M (Continued on next page) S-7220B 28 - Brother International S-7220B | Instruction Manual - English - Page 36
7. USING THE CONTROL BOX PANEL (BASIC OPERATIONS) Setting the number of stitches for start and end backtacking and continuous backtacking 3 Stitch number key (2) so that "d" is displayed. 2. Press the end backtack key (3) to set the number of stitches for d. (Example: 6) 3139M 29 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 37
7. USING THE CONTROL BOX PANEL (BASIC OPERATIONS) 7 Selecting "Thread trimming not locked" and "Thread trimming locked" T: Thread trimming mode Set the power switch (1) to OFF. 3664M Refer to the next page for details on sewing "Start and end backtacking" or "Continuous backtacking". 3665M - Brother International S-7220B | Instruction Manual - English - Page 38
USING THE CONTROL BOX PANEL (BASIC OPERATIONS) - Brother International S-7220B | Instruction Manual - English - Page 39
USING THE CONTROL BOX PANEL (ADVANCED OPERATIONS) The operations described in this section should only be carried out by a technician. NOTE: The control box panel will not operate when the machine treadle is returned to the neutral position and sewing stops. 1 1. Press the start backtack 7220B 32 - Brother International S-7220B | Instruction Manual - English - Page 40
USING THE CONTROL BOX PANEL (ADVANCED OPERATIONS) 8-3. Slow start The first two stitches sewn after the thread is trimmed are sewn at a speed of 700 rpm. After this, the sewing Correction sewing This sews at slow speed (220 rpm) while the actuator is being pressed when the sewing machine is 7220B - Brother International S-7220B | Instruction Manual - English - Page 41
8. USING THE CONTROL BOX PANEL (ADVANCED OPERATIONS) 8-6. Setting the needle up stop position and needle down stop position Meaning of displays during end backtack key (2) to set the value. Becomes lower 2 Becomes higher Set DIP switch -3 to ON. (The settings will be locked.) 3152M S-7220B 34 - Brother International S-7220B | Instruction Manual - English - Page 42
CAUTION Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result. Turn off the power switch at the following times. The machine may operate if the treadle is depressed by mistake, which could result in injury. When threading - Brother International S-7220B | Instruction Manual - English - Page 43
length to be used for condensed stitches. 3. Tilt back the machine head. 4. Loosen the nut (5) and then turn the bolt (6) until its head is touching the solenoid lever (7). 5. Tighten the nut (5) to secure the bolt (6). 6. Return the machine head to its normal position. 1. Return the stitch - Brother International S-7220B | Instruction Manual - English - Page 44
the thread tension CAUTION Turn off the power switch before removing or inserting the bobbin case. The machine may operate if the treadle is depressed by mistake, which could result in injury. Good even the presser foot. 2. Adjust by turning the tension nut (2). Becomes stronger 3748M 37 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 45
from the needle tips will be reduced; if the tension is reduced, the lengths will be increased. Adjust by turning the pretension (1). Shorter 3676M Longer S-7220B 38 - Brother International S-7220B | Instruction Manual - English - Page 46
perfomance of this machine and to ensure a long service life. Furthermore, if the sewing machine has not been used for a long period of time, carry out the following cleaning procedures before using it again. case (4), and then place the bobbin case (4) back into the machine. 2184M 39 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 47
machine head. When the machine machine head. Tilt back the machine Use only the lubricating oil (Nisseki Mitsubishi Sewing Lube 10N; VG10) specified by Brother . * If this type of lubricating oil is difficult to obtain, the recommended oil to use machine head - Brother International S-7220B | Instruction Manual - English - Page 48
it is bent or if the tip is broken. 2. Check that the upper threads have been threaded correctly. (Refer to page 15.) 3. Carry out a test sewing. 3753M 41 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 49
the reset procedure. * If you continue to use the sewing machine after carrying out the reset procedure but without applying grease, problems with the sewing machine may result. Use Brother-specified grease (SA7300-001). Using the tube S-7220B 3682M (Continued on next page) 42 - Brother International S-7220B | Instruction Manual - English - Page 50
403, 405, 433 specifications> grease 1. Turn the pulley to raise the needle bar to a position where the slide block guide (1) can be seen. 2. Apply grease to the slide block guide the treadle to run the sewing machine for 1 second or more. 8. Turn the power switch - Brother International S-7220B | Instruction Manual - English - Page 51
the reset procedure. * If you continue to use the sewing machine after carrying out the reset procedure but without applying grease, problems with the sewing machine may result. Use Brother-specified grease (SA7300-001). Using the tube S-7220B 3682M (Continued on next page) 44 - Brother International S-7220B | Instruction Manual - English - Page 52
11. CLEANING grease 1. Turn the pulley to raise the needle bar to a position where the slide block guide (1) can be seen. 2. Apply grease to the slide block guide (1) in the places shown in the illustration. 3754M 3755M 3756M 1. Turn the - Brother International S-7220B | Instruction Manual - English - Page 53
amount" above. * Turn the adjusting screw (3) and check the lubrication amount repeatedly until the lubrication amount is correct. 4. Check the lubrication amount again after the sewing machine has been used for approximately two hours. S-7220B 46 - Brother International S-7220B | Instruction Manual - English - Page 54
of the sewing machine should only be carried out by a qualified technician. Ask your Brother dealer or positions and check that they operate correctly before using the machine. Use both hands to hold the machine head when tilting it back or returning it the two screws (2). 3757M 3758M 47 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 55
used for the table leaves too much space between the machine The standard amount of clearance between the machine head and the table hole is 1.5 mm so that the washer (2) is on the machine head side as shown in Figure [B]. * If operate. 3.5 mm or more Sewing machine Table Clearance is too large. - Brother International S-7220B | Instruction Manual - English - Page 56
for -405 specifications] above the surface of the thread guide (3) when machine specifications as shown in the table. -4[]3 specifications -405 height as the base of the thread guide (3), and then measure the tension of thread take-up spring (1). NOTE: If using the tension gauge (7) (sold separately) - Brother International S-7220B | Instruction Manual - English - Page 57
range for arm thread guide R (1). * To adjust the position, loosen the screw (2) and then move arm thread guide R (1). ・ When sewing thick material, move arm thread guide R (1) to the oil cap (5). 7. Adjust the presser foot pressure using the adjustment screw (4), and then tighten the nut (3). 3763M - Brother International S-7220B | Instruction Manual - English - Page 58
needle plate is 1.0 mm for -4[]3 specifications, and 1.2 mm for -405 specifications. Becomes higher Becomes lower 3764M 1. Turn the pulley until the feed dog (1) rises to the highest position. 2. Tilt back the machine head. 3. Loosen the screw (2). 4. Turn the feed lifting rock 7220B - Brother International S-7220B | Instruction Manual - English - Page 59
is flush with the top of the needle plate, and stop turning the pulley at that point. 2. Tilt back the machine head. 3. Loosen the two set screws (4). 4. Turn the shaft (2) in the direction of the arrow within a range front 3769M Raise the front Back is raised Lower the front 3770M S-7220B 52 - Brother International S-7220B | Instruction Manual - English - Page 60
the illustration. 1. Remove the presser foot (3), the needle plate (4) and the feed dog (5). 2. Turn the machine pulley to set the needle bar (1) to its lowest position. 3. Remove the rubber cap (6) from the face (4) and the presser foot (3). 3772M 53 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 61
mm between the tip of the needle and the top of the needle plate (2). ... There is a gap of approximately 4 mm between the tip of the needle and back the machine head. 3. Loosen the two set screws (5), and then turn the vertical cam (3) sligtly to adjust the timing. NOTE: Use the standard - Brother International S-7220B | Instruction Manual - English - Page 62
405> 2.2 mm 3775M When the machine pulley is turned forward to raise the needle bar (1) 1.8 mm (2.2 mm for -405 Stitch length dial 0 setting. ... Stitch length dial 3 setting. rotary hook (8). 4. Turn the machine pulley to raise the needle bar - 0.7 mm 0.6 - 1.1 used to pass through smoothly. The - Brother International S-7220B | Instruction Manual - English - Page 63
sewing machine pulley by hand to move the feed dog (2) below the needle plate (3). 2. Use the lifting lever to lower the presser foot (1). 3. Loosen the nut (4). 4. Use the nut (4). * After making the adjustment, sew a piece of material to check the floating amount. Raise Lower 3780M S-7220B 56 - Brother International S-7220B | Instruction Manual - English - Page 64
troubleshooting. The machine may operate if the treadle is depressed by mistake, which could result in injury. 14-1. Sewing Items with a "*" in the "Page" column should only be checked by a qualified technician. Problem occur while sewing 0470M Is the thread path not smooth enough? Use a file - Brother International S-7220B | Instruction Manual - English - Page 65
TROUBLESHOOTING Problem 5 Skipped stitches at sewing start Thread unravelling at sewing Is the needle too wide? Try using a needle with a count that Is the sewing speed too fast at the sewing start? Use the slow sewing speed too fast? Use the sewing speed control keys to gradually reduce the sewing - Brother International S-7220B | Instruction Manual - English - Page 66
14. TROUBLESHOOTING Problem 8 Lower thread is tangled at the sewing start. Spinning of bobbin during thread trimming Lower thread 0751M 9 Upper and lower threads are breaking. 0471M 10 Incorrect thread trimming (Upper and lower threads - Brother International S-7220B | Instruction Manual - English - Page 67
14. TROUBLESHOOTING Problem 12 Broken needles 0469M 13 Oil gauge (1) is not visible in oil gauge window. Possible cause Is the material being pushed or pulled with excessive force during sewing? Is the needle properly installed? If it is incorrect, install the needle correctly. Is the needle bent, - Brother International S-7220B | Instruction Manual - English - Page 68
14. TROUBLESHOOTING Problem 17 Nothing appears on the operation panel display. Possible cause Is the power supply connector disconnected from the control box? Insert the connector securely. This display is to notify you that it is time to apply grease. Apply grease. 10* 3154M 42, 44* 61 S-7220B - Brother International S-7220B | Instruction Manual - English - Page 69
14. TROUBLESHOOTING 14-2. label Is the power supply voltage abnormally high? Check. Problem with control box. Replace the control box. Is the electrical * 3155M 10* 3156M 11 Has the machine locked up? Turn off the power and then turn the machine pulley by hand and check that it turns easily - Brother International S-7220B | Instruction Manual - English - Page 70
TROUBLESHOOTING Error code Err 5 (Safety switch operated) Possible cause Is the machine connector inside the control box disconnected? Insert the connector securely. Page 10* Err 6 (Voltage drop) Is the machine head tilted back? Return the machine problem sewing machine as normal. Problem - Brother International S-7220B | Instruction Manual - English - Page 71
14. TROUBLESHOOTING Page * ** 3702M * ** 3158M * ** 3703M Err 15 Problem with motor. Replace the motor. ** (Problem with sewing machine motor operation) Problem with power stroke". * (Treadle pedal position error) Problem with treadle unit. Replace the treadle unit. ** S-7220B 64 - Brother International S-7220B | Instruction Manual - English - Page 72
14. TROUBLESHOOTING Error code Err 21 (Thermistor error) Possible cause Is connector CN16 inside the control box disconnected? Insert the connector securely. Page * 3159M Err 100 This appears on the display when the sewing machine has continued to be used for a certain period after the " - Brother International S-7220B | Instruction Manual - English - Page 73
TROUBLESHOOTING code -0 (Grease up) Possible cause If you continue to use the sewing machine for a certain length of time without applying grease (and Head detector unit error 15 Problem with sewing machine motor operation 16 Thread trimming problem, contact the place of purchase. S-7220B 66 - Brother International S-7220B | Instruction Manual - English - Page 74
INSTRUCTION MANUAL http://www.brother.com/ 15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone: 81-52-824-2177 © 2006 Brother Industries, Ltd. All Rights Reserved. S-7220B SA7437-001 E 2006.06. B (1)
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S-7220B
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
INSTRUCTION MANUAL