Single needle high speed, top variable feed lockstitch machine (62 pages)
Summary of Contents for Global 3700 AUT Series
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SINGLE NEEDLE DIRECT DRIVE LOCKSTITCH MACHINE WITH THREAD TRIMMER 3700 AUT SERIES INSTRUCTION/ OPERATING MANUAL PARTS MANUAL...
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SAFETY INSTRUCTIONS Thank you very much for b uy ing GLOBAL sewing machine. Before using your new machine, please carefully read the safety instructions. With industrial sewing machines, it is normal to carry out work while positioned directly in front of moving parts such as the needle and thread take-up, and consequently there is always a danger of injury that can be caused by these parts.
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SAFETY INSTRUCTIONS 2. Notes on safety CAUTION Environmental requirements The relative humidity should be within the range of 45% to 85% during use, and no dew formation should occur in a ny devices. Excessively dry or humid environments and dew formation may cause problems with correct operation.
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If only one hand is used, the weight of the machine Ask your GLOBAL dealer or a qualified electrician to head may cause your hand to slip, and your hand carry out any maintenance and inspection of the may get caught.
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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 GLOBAL dealer. CAUTION I t.bling parts may cause...
CONTENTS ♦ ♦ PARTS BOOK INSTRUCTION MANUAL 1. NAMES OF MAJOR PARTS ....1. Machine body & Knee lifter mechanism ... 35 2. MACHINE SPECIFICATIONS ....2. Needle bar and thread take-up 3. INSTALLATION........mechanism ............ 37 3-1.
Needle (DBx1, DPx5) NS #9-#18 • ... When sewing at speeds of 4,000 rpm or higher, set the stitch length 10 4 .2 mm or less. ---- Lubricatlna oil Rotary hook GLOBAL 3700 AUT GLOBAL 3700 AUT Rotarv hook Hiah-soeed saindle Lubricated...
The machine may operate if the treadle is depressed by mistake, which could result in injury. Contact your GLOBAL dealer or a qualified electrician for any electrical work that may need to be done. Use both hands to hold the machine head when tilting it back or returning it to its original position.
3. INSTALLATION 3-1. Table processing diagram • The top of the table should be 40 mm in thickness and should be strong enough to hold the weight and with-stand the vibration of the sewing machine. • Drill holes as indicated in the illustration below. Cotton stand hole Cord hole Head rest hole...
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3. INSTALLATION Rubber cushions (1) Rubber cushions [2 pcs] (2) Nails [4 pcs] Knee lifter complying bar (3) Knee lifter complying bar 4. Machine head (1) Hinges [2 pcs] (2) Machine head (3) Head rest NOTE: Tap the head rest (3) securely into the table hole.
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3. INSTALLATION 6. Cotton stand ( 1) Cotton stand NOTE: Securely tighten the nut (4) that the two rubber cushions (2) and the ( 1) move. washer (3) are securely clamped and so that the cotton stand ( does not 7.
Use only the lubricating oil (Nisseki Mitsubishi Sewing Lube 10N; VG10) specified by GLOBAL * If this type of lubricating oil is difficult to obtain, the recommended oil to use is <Exxon Mobil Essotex SM1 O;...
4. PREPARATION BEFORE SEWING 4. PREPARATION BEFORE SEWING 4-1. Installing the needle .4\.CAUTION Tum off the power switch before installing the needle. The machine may operate if the treadle is depressed by mistake, which could result in injury. highest position. 1.
4. PREPARATION BEFORE SEWING 4-3. Winding the lower thread AcAuT10N 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. 1.
4. PREPARATION BEFORE SEWING 4-5. Threading the upper thread AcAUTION Turn off the power switch before threading the upper thread. The machine may operate if the treadle is depressed by mistake, which could resull in injury. Turn the machine pulley and raise the thread take-up (1) before threading the upper thread.
4. PREPARATION BEFORE SEWING 4-7. Using the thread wiper l:!l Press the thread wi p er switch (1 ) to the side. If this is done , the thread wiper (2 ) will operate after the thread is trimmed. 4-8. Using the knee lifter The p resser foot ( 2 ) can be raised b y p ressin g the knee lifter p late (1).
5.SEWING 5. SEWING AcAur10N 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. •...
5.SEWING 5-3. Sewing condensed stitches If you press the actuator (1) or the reverse lever (2) while sewing is in progress, you can sew stitches (forward direction) with small stitch lengths. • Before carrying out sewing, set the stitch length for condensed stitches as follows.
6. THREAD TENSION 6. THREAD TENSION 6-1. Adjusting 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 stitches Upper thread Lower thread...
6. THREAD TENSION 6-2. Adjusting the presser foot pressure Correct stitches Upper thread Skipped stitches occur ____..Increase the pressure. Uneven stitch length ), I �' !::: ----+- D e c re a s e t he pre ssu re . ' __ ' •...
6. THREAD TENSION 6-4. Adjusting the thread take-up amount CAUTION Tum off the power switch before carrying out this operation. The machine may operate if the treadle is depressed by mistake, which could result in injury. If the thread take-up amount is small and the thread breaks easily when sewing heavy materials, you can increase the <Thread take-up amount>...
7. CLEANING 7. CLEANING AcAUTION Turn off the power switch before carrying out cleaning. The machine may operate if the treadle is depressed by mistake, which could result in injury. 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, othelWise inflammation can result.
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Use only the lubricating oil (Nisseki Mitsubishi Sewing Lube 10N; VG10) specified by 3)� GLOBAL. * If this type of lubricating oil is difficult to obtain, the recommended oil to use is <Exxon Mobil Essotex SM10; VG10>. 1. Remove the rubber cap (3).
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6.CLEANING B. Oil tank oil quantity Check the oil gauge window (1 ). and add more oil if the oil gauge (2) is below the lower reference line. (Refer to page 8.) Upper reference line Lower reference line 3. Checking 1.
7. CLEANING 7-2. Applying grease Using the tube ( 103.20-107) Marked red Tum the machine pulley to lower the needle bar until the hole is visible. 1. Turn the power swilch to "OFF". 2. Remove the screws and the set screws. 3.
8. ADJUSTING THE ROTARY HOOK LUBRICATION AMOUNT 8. ADJUSTING THE ROTARY HOOK LUBRICATION AMOUNT AcAUTION Be careful not to touch your fingers or the lubrication amount check sheet against moving parts such as the rotary hook or the feed mechanism when checking the amount of oil supplied to the rotary hook. otherwise injury may result.
Ask your GLOBAL dealer or a qualified electrician to depressed by mistake, which could result in injury. carry out any maintenance and inspection of the When carrying out inspection, adjustment and electrical system.
9. STANDARD ADJUSTMENTS 9-2. Adjusting the safety switch position The safety switch (1) is normally installed as shown in figure [A ]. However, if the processing method used for the table leaves too much space between the machine head and the table hole, it may adversely affect the operation of the safety switch (1).
9. STANDARD ADJUSTMENT S 9-3. Adjusting the thread take-up spring <Thread take-up spring position> The s1andard position of the thread 1ake-up spring ( 1 ) is 6-8 mm above the surface of the t h read guide (3) when the presser fool (2) is lowered.
9. STANDARD ADJUSTMENTS 9-4. Adjusting arm thread guide R The standard position of arm thread guide R (1) is the position where the screw (2) is in the center of the adjustable range for arm thread guide R (1 ). Becomes greater Becomes less To adjust the position, loosen the screw (2) and then...
9. STANDARD ADJUSTMENTS 9-6. Adjusting of the feed dog height The standard height of the feed dog ( 1 ) when ii is at its maximum height above the top of the needle plate is 0.8 mm. �· 0.8mm 1. Turn the pulley until the feed dog (1) rises to the highest position.
9. STANDARD ADJUSTMENTS 9-7. Adjusting the feed dog angle The standard angle for the feed dog (1) when it is at its highest position above the needle plate is when the "O" mark (or V groove) on the shaft (2) is aligned with the feed rocker bracket arm (3) and the feed dog (1) is parallel to the needle plate.
9. STANDARD ADJUSTMENTS 9-10. Adjusting the needle and rotary hook timing The lip of the rotary hook (3) should be aligned with the center of the needle (4) when the needle bar (1) moves up from its lowest position to the position where reference line 0.5- 0.7mm (b), which is the line at the bottom of the needle bar (1 )(third line from the bottom when using a DA x 1 needle), is aligned...
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9. STANDARD ADJUSTMENTS 9-12. Thread trimmer mechanism < > Adjusting the position of trimmer cam 1.Turn the hand wheel to make the needle bar at its lowest The needle bar lift 5mm The needle bar at its lowest stroke stroke then lift 5mm to let the basic line (b) is aligned with the bottom of needle bar ( as the figure show you).
10. TROUBLESHOOTING 10. 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 switch and consult a qualified technician or the place of purchase. ADANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box.
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10. TROUBLESHOOTING Paae Problem Possible cause • Is the thread take-up spring tension too strong? Skipped stitches at sewing Reduce the tension of the thread take-up spring. start • Is the thread take-up spring operating range too large? Thread unravelling Lower the position of the thread take-up spring.
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If the bobbin is not turning smoothly, replace the bobbin. • Is a bobbin other that the light-alloy bobbins specified? Use only bobbins which are specified by GLOBAL. • Upper and lower threads Is the needle bent or is the needle tip broken? are breaking.
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10. TROUBLESHOOTING Problem Paae Possible cause Broken needles 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, is the needle tip broken, or is the needle hole blocked? Replace the needle.
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3700 AUT SERIES SINGLE NEEDLE DIRECT DRIVE LOCKSTITCH MACHINE WITH THREAD TRIMMER PARTS MANUAL...
N AME OF PARTS REF. NO. PART NO. QTY. NOTE 103.01-01 MACHINE COVER 102.01-01-01 FACE PLATE STICK 103.01-02 STAND R 103.01-03 STAND L 103.01-04 MOTER COVER 01-405001223-4 SCREW M5Xl2 103.01-06 SIDE PLATE M5 x l 2 01-405001223-4 SCREW 103.01-08 RUBBER CAP 103.01-09 RUBBER CAP 103.01-10...
NAME OF PARTS PART NO. REF. NO. NOTE 01-806750614-4 SET SCREW M6x6 103 02-01-02 BOBBIN WINDER DRIVING WHEEL 01-806750614-4 SET SCREW 103.02-01-04 SCREW 01-806751014-4 SCREW M6 x 10 103.02-01-06 NEED LE BAR C R ANK 103.02-01-07 TAKE RING BEARING(6004-ZN) 103.02-01-08 BEARING(6004-2Z) 103.02-01-09 UPPER SHAFT...
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NAME OF PARTS REF. NO. PART NO. QTY. NOTE 4-1 9 -5 104.02-04-19-5 SHOUWER SCREW 4- 20 - 5 104.02-04-20-5 01-806001014-4 M6XIO SCREW 103.02-11 NEEDLE BAR GUIDE SLIDE BLOCK 103.02-12 NEEDLE BAR 103.02-13 NEEDLE BAR BUSH, U 103.02-14 NEEDLE BAR BUSH, D 01-805000524-4 SCREW M5x5...
NAME OF PART S REF. NO. PART NO. NOTE 103.07-01-01 SCREW MSx6-0.8 101.03-35 OIL WICX 1 -3 103.07-01-03 ROTARY HOOK SHAFT 2 -1 103.07-02-01 PUMP BUSH 103.07-02-02 0 RING I 03.07-02-03 OIL SEAL 2 -4 I 03.07-02-04 HOLE PLUG I 03.07-02-05 0 RING 103.07-03 BEARING...
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NAME OF PARTS REF. NO. PART NO. QTY. NOTE 103.08-07 0 RING 103.08-08 FELT 103.08-09 FELT SUPPORT SPRING 103.08-07 0 RING 103.08-ll NEEDLE BAR CORK 103.08-27 PLUNGER 29-1 103.08-29-1 CAP SCREW 29-2 103.08-29-2 SPRING, COMPRESSION 103.08-30 10. 5 RUBBER CAP, 103.08-31 ADJUSTING SCREW 103.08-32...
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