Brother S-7200A Скачать руководство пользователя страница 35 | Manualshive

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S-7200A

8. THREAD TENSION

29

8-2. Adjusting the presser foot pressure

Correct stitches

Upper thread

Skipped stitches occur

Increase the pressure.

Uneven stitch length

Stitches are puckered

Decrease the pressure.

The presser foot pressure should be as weak as possible,
but strong enough so that the material does not slip.

1. Loosen the adjusting nut (1).
2. Turn the presser adjusting screw (2) to adjust the presser

foot pressure.

3. Tighten the adjusting nut (1).

8-3. Adjusting the trailing length after thread trimming

At the time of thread trimming, the thread tension is
loosened and tension is applied by the pretension (1) only.

The standard trailing length for the upper thread is 35–40
mm.

If the tension of the pretension (1) is increased, the
lengths of the threads trailing from the needle tips will be
reduced; if the tension is reduced, the lengths will be
increased.

Adjust by turning the pretension (1).

0894M

0895M

0896M

0897M

Becomes stronger

Becomes weaker

2179M

2180M

2181M

Longer

Shorter

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Содержание S-7200A

Страница 1: ...S 7200A SINGLE NEEDLE DIRECT DRIVE STRAIGHT LOCK STITCHER WITH THREAD TRIMMER ...

Страница 2: ...rovided in order to ensure safe operation of this machine and to prevent accidents and injury to yourself or other people Indications DANGER The instructions which follow this term indicate situations where failure to follow the instructions will almost certainly result in death or severe injury CAUTION The instructions which follow this term indicate situations where failure to follow the instruc...

Страница 3: ...ect the power cord from 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 electrical work that may need to be done The sewing machine weighs more than 50 kg The installation should be carried out by two or more people Do not connent...

Страница 4: ...e machine Use both hands to hold the machine head when tilting it back or returning it to its original position If only one hand is used the weight of the machine head may cause your hand to slip and your hand may get caught If an error occurs in machine or if abnormal noises or smells are noticed immediately turn off the power switch Then contact your nearest Brother dealer or a qualified technic...

Страница 5: ...ave been removed or are difficult to read please contact your nearest Brother dealer 1 2 3 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 A Finger guard B Thread take up cover 4 Direction of operation 2084M Control box 2082M 2083M Oil pan ...

Страница 6: ...RATION PANEL BASIC OPERATIONS 17 5 1 Names and functions 17 5 2 Sewing start and end backtack stitches 19 5 3 Sewing fixed stitches 20 5 4 Sewing name labels 21 5 5 Sewing pleat presser stitches 22 5 6 Using the lower thread counter 23 6 USING THE OPERATION PANEL ADVANCED OPERATIONS 24 6 1 Names and functions 24 6 2 Adjusting the needle up stop position 25 6 3 LOCK key 25 6 4 Resetting all setting...

Страница 7: ...ing lever 4 Quick reverse Actuator 5 Presser foot 6 Control box 7 Knee lifter assembly 8 Power switch 9 Oil gauge window 40 43 specifications 10 Reverse lever 11 Stitch length dial 12 Machine pulley 13 Operation panel 14 Cotton stand Safety devices 15 Thread take up cover 16 Finger guard 2206M ...

Страница 8: ...eed 1 800 rpm Max stitch length 4 2 mm 5 mm Lifting lever 6 mm Presser foot height Knee lifter 16 mm Feed dog height 0 8 mm 1 2 mm Needle DB 1 DP 5 NS 9 11 11 18 19 22 Motor AC servo motor 4 pole 450W Control circuit Microprocessor When sewing at speeds of 4 000 rpm or higher set the stitch length to 4 2 mm or less Rotary hook 43S 403 433 405 45S 453 Lubricated for light materials Lubricated for m...

Страница 9: ...tion Do not set up this sewing machine near other equipment such as televisions radios or cordless telephones otherwise such equipment may be affected by electronic interference from the 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 should be carried by the arm by two pe...

Страница 10: ...he weight and with stand the vibration of the sewing machine Drill holes as indicated in the illustration below 3 2 Installation 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 2090M Cotton stand hole Cord hole Head rest hole Control box mounting hole 2091M ...

Страница 11: ... Power switch 2 Screws 2 pcs 4 Oil pan 1 Head cushions left 2 pcs 2 Head cushions right 2 pcs 3 Oil pan 5 Rubber cushions 1 Rubber cushions 2 pcs 2 Nails 4 pcs 6 Knee lifter complying bar 3 Knee lifter complying bar 2092M 2093M Operator 2094M ...

Страница 12: ...ll go the machine head will not be sufficiently stable when it is tilted back 8 Operation panel 1 Operation panel 2 Screws 2 pcs Use for tightening rear cover 9 Sticker Remove 1 Sticker 10 Cotton stand 1 Cotton stand NOTE Securely tighten the nut 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 2095M 2096M 2097M 2098M ...

Страница 13: ...djust so that the amount of play in the knee lifter 7 is approximately 2 mm when the knee lifter plate 1 is gently pressed 5 Securely tighten the nut 6 6 Loosen the nut 9 7 Turn the screw 10 until the distance between the end of the screw 10 and the knee lifter 11 is approximately 8 mm 8 Turn the adjusting screw 10 to adjust so that the presser foot 5 is at the desired position within a distance o...

Страница 14: ... they can cause vomiting and diarrhea 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 Nisseki Mitsubishi Sewing Lube 10N VG10 specified by Brother 1 Tilt back the machine head 2 Remove the rubber cap 1 and pour 150 ml of lu...

Страница 15: ...er or a qualified electrician for any electrical work that may need to be done Do not connect the power cord until all cords have been connected The machine may operate if the treadle is depressed by mistake which could result in injury 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 ...

Страница 16: ...TE Bind the cords in such a way that the connector does not get pulled out All cords that come out from the control box should be secured 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 Push in securely until the tabs 5 engage 2108M Removal Securin...

Страница 17: ...e phase specifications 1 Attach an appropriate plug to the power cord 4 The 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 4 Ground wire 1 Ground wire 2 Screw With washer 3 Screw 2111M Single phase Three phase Green and yellow wire ground wire 2112M Ground symbol Oil...

Страница 18: ...anel After iniT rPM appears treadle operation will then be possible The operation panel will change to the stitch number display This message will not appear the second and subsequent times that the power switch is turned on Test operation 1 Check that the machine sews at low speed when the treadle 3 is gently pressed to position B 2 Then check that it sews at high speed when the treadle 3 is gent...

Страница 19: ...he screw 1 4 2 Removing the bobbin case CAUTION Turn off the power switch before removing the bobbin case The machine may operate if the treadle is depressed by mistake which could result in injury 1 Turn the machine pulley to raise the needle until it is above the needle plate 2 Pull the latch 1 of the bobbin case upward and then remove the bobbin case 3 The bobbin 2 will come out when the latch ...

Страница 20: ...bbin and cut the thread with the knife 4 Loosen the screw 5 and move the bobbin presser 6 to adjust the amount of thread wound onto the bobbin NOTE The amount of thread wound onto the bobbin should be a maximum of 80 of the bobbin capacity 4 4 Installing the bobbin case CAUTION Turn off the power switch before installing the bobbin case The machine may operate if the treadle is depressed by mistak...

Страница 21: ...s to release the lock 2 Turn the stitch length dial 2 clockwise or counter clockwise so that the desired stitch length is at the upper most position on the dial The larger 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 while looking at the f...

Страница 22: ...hread wiper Press the thread wiper 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 presser foot 2 can be raised by pressing the knee lifter plate 1 2129M 2130M 2131M 2132M 2209M ...

Страница 23: ... set the number of backtack stitches for A B C and D and the number of fixed stitches for E and F When the key is pressed the setting increases from 0 up to 99 When the key is pressed the setting decreases from 99 down to 0 3 Start backtack key When this key is pressed so that the indicator illuminates the number of start backtack stitches 0 99 in the A and B stitch number displays is sewn 4 End b...

Страница 24: ...he sewing speed when the treadle is depressed to the maximum amount If all bars are illuminated it indicates that the maximum speed can be set If all bars are switched off it indicates the minimum speed 220 rpm 12 Sewing speed control keys These keys let you adjust the sewing speed that is used when the treadle is depressed to the maximum amount The sewing speed can also be adjusted while sewing i...

Страница 25: ...e operating until the set number of start backtack stitches has been sewn 4 End backtacking is carried out After it has finished the thread is trimmed automatically and the sewing machine stops in the needle up position NOTE If the treadle is depressed backward before sewing of the set number of start backtack stitches is complete end backtacking will not be carried out If the indicator of the thr...

Страница 26: ...ction When the treadle is continuously depressed thread trimming is carried out after the fixed stitches have been sewn Automatic sewing When the AUTO key is pressed to turn on the automatic sewing function the fixed stitches are sewn simply by depressing the treadle once without needing to depress it continuously Start and end backtack sewing The start backtack key and end backtack key can be pre...

Страница 27: ...so lifted automatically Automatic thread trimming Press the thread trimming key to turn on the thread trimming function Thread trimming is carried out automatically after the second set of F stitches has been sewn Automatic sewing When the AUTO key is pressed to turn on the automatic sewing function the fixed stitches in E and F are sewn respectively simply by depressing the treadle once without n...

Страница 28: ...trimming is carried out Automatic sewing and automatic thread trimming These functions cannot be used Start and end backtack sewing The start backtack key and end backtack key can be pressed to turn on the backtack sewing function If changing the number of end backtack stitches indicated in C and D press the pleat presser sewing key to turn off the pleat presser sewing function before making the c...

Страница 29: ...etting value will be accepted when sewing starts Lower thread counter operation 1 When sewing is carried out the value shown in the lower thread counter display is reduced by 1 for every 10 stitches sewn After the value reaches zero 0 a minus sign appears and counting continues to a maximum of 999 2 When the value is 5 or less a warning icon 1 illuminates and an electronic buzzer sounds for 5 seco...

Страница 30: ...topped stitches can be sewn one at a time by pressing the actuator NOTE If you press the actuator while sewing is in progress backtack stitches will be sewn Correction sewing cannot be carried out while the indicator of the pleat presser sewing key 8 is illuminated If you press this key again while the icon 21 is illuminated the icon 21 will turn off 22 Needle up down key Use this key to select wh...

Страница 31: ...setting value of 10 corresponds to an angle of rotation of approximately 10 for the upper shaft 5 6 3 LOCK key At the time of shipment from the factory the LOCK key 1 is set to ON The icon 2 is illuminated In this state the following three key operations are invalid so that setting values cannot be changed accidentally FUNC key 3 This key is used to make settings for various functions ENTER key 4 ...

Страница 32: ... this may result in personal injury or damage to the machine Use both hands to hold the machine head when tilting it back or returning it to its original position If only one hand is used the weight of the machine head may cause your hand to slip and your hand may get caught 7 1 Sewing 1 Press the ON power switch 1 The power indicator 2 will illuminate 2 Use the operating panel to carry out the pr...

Страница 33: ... 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 Sewing 1 Return the stitch length dial 4 to the stitch length for normal sewing 2 Push down the dial lock lever 3 to engage the lock 3 Start sewing 4 At the position where you would like to start sewing condensed stitches press the actuator 1 or...

Страница 34: ...ead tension Upper thread tension too strong or lower thread tension too weak Decrease the upper thread tension Increase the lower thread tension Lower thread tension Adjust by turning the adjustment screw 1 until the bobbin case drops gently by its own weight while the thread end coming out of the bobbin case is held Upper thread tension After the lower thread tension has been adjusted adjust the ...

Страница 35: ...just the presser foot pressure 3 Tighten the adjusting nut 1 8 3 Adjusting the trailing length after thread trimming At the time of thread trimming the thread tension is loosened and tension is applied by the pretension 1 only The standard trailing length for the upper thread is 35 40 mm If the tension of the pretension 1 is increased the lengths of the threads trailing from the needle tips will b...

Страница 36: ...may get caught 9 1 Daily cleaning procedures The followinig cleaning operations should be carried out each day in order to maintain the 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 1 Cleaning 1 Raise the presser foot 2 Remove the two screws...

Страница 37: ...g oil is added to the gearbox at the time of shipment from the factory 1 Look at the oil window 1 from directly in front 2 If the oil level is below the normal level add more lubricating oil as described in the following procedure Lubrication Use only the lubricating oil Nisseki Mitsubishi Sewing Lube 10N VG10 specified by Brother 1 Remove the rubber cap 3 2 Add lubricating oil until the oil level...

Страница 38: ... more oil if the oil gauge 2 is below the lower reference line Refer to page 8 3 Checking 1 Replace the needle if 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 2190M 2189M Upper reference line Lower reference line ...

Страница 39: ...ressed The power indicator 3 will flash NOTE If you do not apply grease when the GREASEUP notification appears the notification will continue to appear and the power indicator 3 will flash each time the power is turned on until you reset the notification by carrying out the procedure on the following page If you continue to use the sewing machine after the GREASEUP notification appears without app...

Страница 40: ...has been applied carry out the following procedure to reset the cumulative time between grease applications 1 Turn the power switch to ON GREASEUP will flash in the main display 1 and the buzzer will sound 2 Press the RESET key 2 The main display 1 will change to stitch number display mode 3 Press the FUNC Function key 4 n 134 xxx will appear in green in the main display 1 xxx represents the time ...

Страница 41: ... thread tension or lower thread tension 28 2 Lower thread is not tight Is the lower thread tension too weak or is the upper thread tension too strong Adjust the lower thread tension or upper thread tension 28 3 Loops appear in seam Is the thread path not smooth enough Use a file with a fine grain or sandpaper to polish smooth the thread path Is the bobbin not turning smoothly Pull out the lower th...

Страница 42: ...sewing start Use the slow start feature 29 13 6 Uneven seam Is the presser foot pressure too weak Adjust the presser foot pressure Is the feed dog too low Adjust the feed dog height Is the bobbin scratched If the bobbin is damaged smooth it with an oiled grindstone or replace it 29 7 Large degree of puckering excess tension Is the upper thread tension too strong Make the upper thread tension as we...

Страница 43: ...ct thread the thread correctly Is the rotary hook sufficiently lubricated 40 43 specifications If the oil gauge is down to the lower reference line in the oil gauge window add more oil Is the upper or lower thread tension too weak or too strong Adjust the upper thread or lower thread tension Is the upper thread may be loose because the thread take up spring operating range is too small Adjust the ...

Страница 44: ...s turned on and treadle is pressed Is the power supply connector disconnected from the control box Insert the connector securely 11 16 Machine does not operate at high speed Is the sewing speed setting or backtack speed setting incorrect Use the sewing speed control keys to set the high speed 18 17 Machine stops during sewing Is the fixed stitch key turned on Press the fixed stitch key so that the...

Страница 45: ...ation panel display has turned off eliminate the cause of the error and then turn the power back on Items with a in the Page column should only be checked by a qualified technician Error code Possible cause Page Err 1 Does the power supply voltage match the control box voltage specifications Check the voltage Err 2 Is the electrical equipment connector inside the control box disconnected Insert th...

Страница 46: ...ating continuously for 3 minutes or more Turn the power switch off and then back on again and then operate the sewing machine normally Err 13 Is the treadle unit connector inside the control box disconnected Insert the connector securely Err 100 GrEASEUP This appears on the display when the sewing machine has continued to be used for a certain period after the GREASEUP notification appears without...

Страница 47: ...INSTRUCTION MANUAL 877 S20 SA2016 001 2003 02 B 1 ...

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