Mitsubishi LT2-230 Скачать руководство пользователя страница 1 | Manualshive

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From the library of: Superior Sewing Machine & Supply LLC

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Содержание LT2-230

Страница 1: ...A MITSUBISHI INDUSTRIAL SEWING MACHINE Model LT2 230 250 Class Double Needle Lockstitch Automatic Undertrimmer Variable Speed INSTRUCTION MANUAL From the library of Superior Sewing Machine Supply LLC...

Страница 2: ...og height 11 Relationship between rotating hook motion and take up lever motion 12 Relationship between hook motion and opener motion 12 Relationship between needle motion and feed dog motion 13 14 Ne...

Страница 3: ...lamp After the connection be sure to protect the rMft connected wires with insulation tape 3 When lamp is not used properly insulate two lamp leads btV jCA 3 Power cable The power cable connection is...

Страница 4: ...onthe balance wheel All sewing machines have been factory adjusted However if the timing marks deviate larger than 3mm adjust light shielding disc position as follows Preparation for adjustment 1 Dis...

Страница 5: ...te spindle oil specified by Mitsubishi Oil level mark 4 jIjL j LT2 230 2 Oiling 2 When a new sewing machine is used for the first time or sewing machine left out of use for considerably long time is u...

Страница 6: ...turned on or off keep foot away from the pedal 2 It should be noted that the brake may not work when the power is interrupted or power failure occurs during sewing machine operation 3 Since dust in th...

Страница 7: ...ding of bobbin thread Note When bobbin thread is wound keep the presser foot lifted Adjustment Tension of wound thread Conically wound thread Length of wound thread Slack winding is recommended for po...

Страница 8: ...read guide as well 2 With the take up lever located at the upper most position pass each needle thread in the order shown in the following figure Note Pressing the upper thread loosening button shown...

Страница 9: ...in case 1 Pass the bobbin thread through slit 1 so that the thread can be unwound on the left side of the bobbin 2 Then pass the thread in the order from T to in the figure 3 Match the protruded porti...

Страница 10: ...alanced tension Tight needle or loose bobbin tension Loose needle or tight bobbin tension Needle thread tension Needle thread tension should be adjusted in reference to bobbin thread tension To adjust...

Страница 11: ...small 2 Turn the balance wheel and stop when the needle is lifted 2 2 mm from the lowest position 3 Rotate the hook by hand to position the hook point to the center of needle axis 4 Move the hook bra...

Страница 12: ...tment Adjust vertical position of needle after one needle bar is located at its top position II Remove thesetscrew 2 Rotate one turn the needle clamp thereby needle position can be changed by 0 6mm le...

Страница 13: ...top position For light fabrics For usual fabrics For heavy fabrics Apprdx 0 8mm from throat plate Approx 1 0mm from throat plate Approx 1 2mm from throat plate Adjustment procedure 1 Lean the machine...

Страница 14: ...the boss of hook shaft bearing 3 If the timing mark is not in line with the black line remove the timing belt and in stall it again to adjust 15 Relationship between hook motion and opener motion 1 Tu...

Страница 15: ...needle bar to be 13 5 and tentatively tighten the screws and of the feed shaft crank 6 Check that the right feed shaft crank is con nected with the link at right angle as shown in Figure 7 If the conn...

Страница 16: ...bar and the needle bar to be 14 1 and tentatively tighten the screws and of the feed shaft crank 6 Check that the right feed shaft crank is con nected with the link at right angle as shown in Figure...

Страница 17: ...p between angle of corner stitching and stitch length Din order to assure neat corner stitching stitch length should be determined in re ference to angle of corner stitching from the following table a...

Страница 18: ...n protrudes 0 0 5 mm from thefixed knife asshown in Figure and tighten thebolts and Bolt g Thread trimmer rocking crank Boltd Thread trimmer rocking crank 2 Gap between movable knife and bobbin case h...

Страница 19: ...r cam 3 Turning the balance wheel by hand adjust the thread trimmer cam so that the movable knife starts moving when the green mark point on the balance wheel comes in line with the black mark point o...

Страница 20: ...nce wheel comes in line with the black mark point on the arm Toadjust loosen twotension release cam clamp screws 4 Opening degree of tension discshouldbe adjusted with the tension release roller mount...

Страница 21: ...trim ming failure adjust it so that thread can be trimmed with minimum pressure 3 Move the movable knife and check that the thread can be sharply trimmed flISF Fixed knife bracket 0 Vertical position...

Страница 22: ...m follower crank andadjust theconnecting rod sothatthecam roller can smoothly enter thegroove ofthread trimmer cam Then tighten thenuts G and 0 11 Adjustment of the cam groove and the cam roller a Pus...

Страница 23: ...st the clearance between the wiper point and the presser foot becomes about 2 mm when the link is pushed by finger as shown 5 Pass each needle thread through needle eye 6 Loosen the screw and move the...

Страница 24: ...ad trimming Presser foot goes Presser foot goes UP after holf up needle DOWN to UP and thread trimming Neutral stitching start position Neutral Notes 1 Stitching speed can be changed by changingdegree...

Страница 25: ...n that set on the two variable resistors cannot be achieved by increasing motor pulley diameter over a certain diameter S eedsettin 1 2 POSITION select switch inte arVR 2500spm 4500spm Speed setting e...

Страница 26: ...SH One shot function switch IL Thread trimmer interlock release switch POS 1 2 POSITION thread trimming US Needle UP position stop by touch back switch TB Back solenoid operation at thread trimming FL...

Страница 27: ...cd opentMn 9 Low speM opeistnn 8 VeiiaMevoltage 7 Correction sMcliinR 6 Needlelifting S Speed control cotivnand 4 Tlvead trimming 3 MediuiThSpeed oneratton 2 OV 1 OV 1 Pres footUt 2 30 V 3 Prespr loot...

Страница 28: ...mall gauge below 11 is used each needle thread should be woundabout 3 4 turn around needle and then passed through needle eye as shown below to assure neat stitches It is re commended to use stepped n...

Страница 29: ...wn and the thread is trimmed 1 When the needle stop early 4 2 When the needle stop late If the distance A shown left is 2 mm or more the malfunction of the knives occur and the needle threads and the...

Страница 30: ...al type hook equipped with racing prevention spring full rotation automatic lubrication horizontal type hook equipped with raching prevention spring Bobbin case Fquipped with spring Equipped with spri...

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