Brother International T-8722C Basic Instruction Manual - English
Brother International T-8722C Manual
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- Brother International T-8722C | Basic Instruction Manual - English - Page 1
using the machine. Please keep this manual within easy reach for quick reference. This basic operation manual describes basic operations including sewing machine operations. For cleaning, standard adjustments and more details, please refer to the instruction manual contained in the Document CD. - Brother International T-8722C | Basic Instruction Manual - English - Page 2
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 - Brother International T-8722C | Basic Instruction Manual - English - Page 3
[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 be done. (For example, the symbol at left means "you must make the ground connection".) T-8421C, 8422C, 8452C, 8722C, 8752C i - Brother International T-8722C | Basic Instruction Manual - English - Page 4
the wall outlet. Lightning may cause 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 the oil out of the reach of children. ii T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 5
your hand may get caught. Use only the proper replacement parts as specified by Brother. If any safety devices have been removed, be absolutely problems in machine operation which result from unauthorized modifications to the machine will not be covered by the warranty. T-8421C, 8422C, 8452C, 8722C - Brother International T-8722C | Basic Instruction Manual - English - Page 6
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 run a high risk of PE receiving a serious electric shock, and problems with correct operation may also occur. 7 Direction of operation * - Brother International T-8722C | Basic Instruction Manual - English - Page 7
Oil pan Control box Transformer box (100V/400V system only) 2166B Oil tank 2506B T-8421C, 8422C, 8452C, 8722C, 8752C v - Brother International T-8722C | Basic Instruction Manual - English - Page 8
1. USEFUL FUNCTIONS FOR OPTIMUM SEWING 1 2. NAMES OF MAJOR PARTS 2 3. INSTALLATION 3 3-1. Table processing diagram 4 3-2. Installation the needle bars (right and left 25 4-9-2. Number of stitches: quick-reference guide 25 5. USING THE G50 OPERATION PANEL (BASIC OPERATIONS 26 5-1. Names and - Brother International T-8722C | Basic Instruction Manual - English - Page 9
can be adjusted using the sewing speed control keys. < When using the G10 operation panel > INSTRUCTION MANUAL CD 8-5. Setting the maximum sewing speed The sewing speed can be adjusted using the MAX key. irregular curves can also be handled with ease. 2513B T-8421C, 8422C, 8452C, 8722C, 8752C 1 - Brother International T-8722C | Basic Instruction Manual - English - Page 10
foot (7) Knee lifter assembly (9) Stitch length dial (11) Oil gauge window (13) Operation panel (15) Stop lever (T-8452C, 8752C ) Safety devices (16) Thread take-up cover 2168B (2) Thread wiper (T-8422C, 8452C, 8722C, 8752C) (4) Quick reverse (Actuator switch) (6) Control box (8) Power switch - Brother International T-8722C | Basic Instruction Manual - English - Page 11
be carried out by a qualified technician. Contact your Brother dealer or a qualified electrician for any electrical work machine should be plugged directly into an AC wall outlet. Operation problems may result if extension cords are used. Carrying the machine The 8452C, 8722C, 8752C 2872M 3 - Brother International T-8722C | Basic Instruction Manual - English - Page 12
hole 3-2. Installation 2170B 1. Control box (1) Control box (2) Bolts [3 pcs] (3) Nuts [3 pcs] (4) Spring washers [3 pcs] (5) Washers [3 pcs] 2. Connecting rod (6) Connecting rod (7) Nut 4127M 4 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 13
3. INSTALLATION 3. Oil pan (1) Head cushions (left) [2 pcs] (2) Head cushions (right) [2 pcs] (3) Oil pan (4) Oiler 2874M 4. Rubber cushions (1) Rubber cushions [2 pcs] (2) Nails [4 pcs] 5. Knee lifter complying bar (3) Knee lifter complying bar 2875M T-8421C, 8422C, 8452C, 8722C, 8752C 5 - Brother International T-8722C | Basic Instruction Manual - English - Page 14
(4) so that the two rubber cushions (2) and the washer (3) are securely clamped and so that the cotton stand (1) does not move. 2878M 6 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 15
needle plate when the knee liter plate (1) is fully pressed. 9. After adjustment is completed, securely tighten the nut (9). Within 13 mm 2882M T-8421C, 8422C, 8452C, 8722C, 8752C 7 - Brother International T-8722C | Basic Instruction Manual - English - Page 16
OIL CORPORATION Sewing Lube 10N; VG10> specified by Brother. * If this type of lubricating oil is difficult oil level drops below the bottom (6) of the oil gauge window (5), be sure to add more oil. 2355B reaches the top reference line (4) of the oil gauge window (3). 3. Replace the rubber cap (1). - Brother International T-8722C | Basic Instruction Manual - English - Page 17
for semi dry types. 3. INSTALLATION Rotary hook race (left and right) 2200B 2174B T-8421C, 8422C, 8452C, 8722C, 8752C 2887M 9 - Brother International T-8722C | Basic Instruction Manual - English - Page 18
high voltages are present can result in severe injury. CAUTION Contact your Brother dealer or a qualified electrician for any electrical work that may need run a high risk of receiving a serious electric shock, and problems with correct operation may also occur. 3-4-1. Opening the control box - Brother International T-8722C | Basic Instruction Manual - English - Page 19
to the cord holder (2) using the repeat cable tie (1), otherwise vibration from the sewing machine may cause the cords to become disconnected, which can cause problems with the operation of the control box. 4141M T-8421C, 8422C, 8452C - Brother International T-8722C | Basic Instruction Manual - English - Page 20
: 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. Leg Control box Green and yellow wire (ground wire) 4144M 12 T-8421C, 8422C, 8452C - Brother International T-8722C | Basic Instruction Manual - English - Page 21
: 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. 2178B T-8421C, 8422C, 8452C, 8722C, 8752C 13 - Brother International T-8722C | Basic Instruction Manual - English - Page 22
: 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. Green and yellow wire (ground wire) 2380B 14 T-8421C, 8422C, 8452C - Brother International T-8722C | Basic Instruction Manual - English - Page 23
treadle) CAUTION Do not touch any of the moving parts or press any objects against the machine while sewing, of the safety switch. (Refer to "13-1. Safety switch position" in the instruction manual CD.) 2. Then check that it sews at high speed when the treadle (3) 8421C, 8422C, 8452C, 8722C, 8752C 15 - Brother International T-8722C | Basic Instruction Manual - English - Page 24
increased by approximately 27 %. At this time, the treadle forward and backward depression sensitivity will change, so readjust if necessary. 4260M 16 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 25
switch before installing the needle. The machine may operate if the treadle is depressed by mistake, which could result in injury. 1. Turn the machine pulley to move the needle bar to its highest position. 2. Loosen the screws (1). 3. Insert the needle (2) straight in as - Brother International T-8722C | Basic Instruction Manual - English - Page 26
right and left. 2. Lift up the latch (2) of the rotary hook, and then remove the bobbin case (3). 3. Remove the bobbin. 2464B 18 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 27
PREPARATION BEFORE 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 should be a maximum of 80 % of the bobbin capacity. 2123M 2124M T-8421C, 8422C, 8452C, 8722C, 8752C 19 - Brother International T-8722C | Basic Instruction Manual - English - Page 28
. The anti-spin spring (6) prevents the bobbin from racing at times such as during thread trimming. Use bobbins (1) made of light alloy as specified by BROTHER. 2466B 20 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 29
anti-spin spring (10) prevents the bobbin from racing at times such as during thread trimming. Use bobbins (1) made of light alloy as specified by BROTHER. 2468B T-8421C, 8422C, 8452C, 8722C, 8752C 21 - Brother International T-8722C | Basic Instruction Manual - English - Page 30
threading easier and it will prevent the thread from coming out at the sewing start. ・ Thread the left-side thread first. 22 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 31
foundation specifications and T-8452C-405> Center Pass the thread through. (Refer to page 54 of the instruction manual CD) 4. PREPARATION BEFORE the tab (3). Specifications indicated by the * mark include arm thread guide D (4) and felt (5). When using polyester thread, install these - Brother International T-8722C | Basic Instruction Manual - English - Page 32
the number, the longer the stitch length will be. (The numbers on the dial are for use as a guide. The length of the finished stitches may vary depending on the type and thickness of material being sewn. Adjust thread wiper (3) will pull up the thread. 2470B 24 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 33
stop lever (1) will then return to its original position automatically. Push 3130M 4-9-2. Number of stitches: quick-reference guide Sewing angle 40° No. of stitches 6 3131M Sewing No. of angle 30° 40° 50° 60° 2.9 mm, the number of stitches becomes 6. T-8421C, 8422C, 8452C, 8722C, 8752C 25 - Brother International T-8722C | Basic Instruction Manual - English - Page 34
illuminates, the number of stitches (0-1999) in the E stitch number display is sewn, and then the sewing machine stops automatically. 4164M 26 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 35
the initial value for the lower thread counter. (Refer to "5-6. Using the lower thread counter" in the instruction manual CD.) 4170M (17) RESET key This key is used to return the lower thread counter to its thread wiper key (18) will switch off. 4174M T-8421C, 8422C, 8452C, 8722C, 8752C 27 - Brother International T-8722C | Basic Instruction Manual - English - Page 36
lock key is illuminated, the sewing machine will stop in the needle up position without thread trimming being carried out. 2160M 28 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 37
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 ".) 5. Depress the treadle to start sewing. 2182B T-8421C, 8422C, 8452C, 8722C, 8752C 29 - Brother International T-8722C | Basic Instruction Manual - English - Page 38
switch can be rotated 90 degrees as shown in the illustration. Select the position (A or B) that is easier to use. 2918M 30 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 39
MEMO T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8722C | Basic Instruction Manual - English - Page 40
in PDF format. ・ Basic Operation Manual ・ Instruction Manual ・ Parts Book Recommended system configuration for using the Document CD OS: Browser version: Windows® XP Service Pack 2, Windows Vista®, Windows® 7 Microsoft® Internet Explorer 6 Service Pack 1 or higher Screen resolution: 1024
![](/manual_guide/products/brother-international-t8722c-basic-instruction-manual-english-92c5151/1.png)
T-8421C, 8422C
T-8452C, 8722C
T-8752C
TWIN NEEDLE DIRECT DRIVE LOCK STITCHER
Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
This
basic
operation
manual
describes
basic
operations including sewing machine operations.
For cleaning, standard adjustments and more details,
please refer to the instruction manual contained in
the Document CD.
Basic Operation Manual