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10. STANDARD ADJUSTMENTS

 

DA-9280 

21 

10-4. Needle guard adjustment 

Adjust so that the needle (2) is pushed by the needle guard (3) 
and the clearance between the needle (2) and the looper (1) tip 
is 0 - 0.05 mm when the actual stitch length has been set and 
the looper (1) moves forward and meets the needle (2).

 

1.  Set the actual stitch length. (Refer to “8-3. Adjusting the stitch 

length”.) 

2.  Turn the machine pulley toward you by hand until the looper 

(1) tip is aligned with the needle (2) center while the looper is 
moving forward. 

3.  Loosen the set screw (4), and then move the needle guard 

(3) up or down to adjust so that the distance between the 
ridge line [A] of the needle guard (3) tip and the needle (2) tip 
is 1 mm.   

4.  Tighten the set screw (4). 
5.  Loosen the set screw (5) and then move the needle guard 

(3) to the left or right to adjust so that the needle (2) is 
pushed by the needle guard (3) and the clearance between 
the needle (2) and the looper (1) tip is 0 - 0.05 mm. 

6.  Tighten the set screw (5). 

 

NOTE: 

 

Be sure to adjust the needle guard (3) after changing the 
stitch length. If you use the sewing machine without 
adjusting the needle guard (3), skipped stitches may occur 
or the looper tip may become broken. 

10-5. Feed dog height adjustment 

Make an adjustment so that the highest part of the feed dog (1) 
will be 1.2 mm above the top surface of the needle plate (2) 
when the feed dog (1) is at the highest position.   
 
Adjust the height of the feed dog (1) by turning the feed bar 
eccentric shaft (3). 

 
 
 
 
 
 
 
 
 
 
 

Installing the Spacer (For the denim specifications)

 

If stitch irregularities develop in sewing very heavy materials, 
adjust the sub-feed dog to the correct height by installing the 
spacer (1). 

1.  Remove the two screws (3) and then remove the sub-feed 

dog (2). 

2. Place the spacer (1) under the sub-feed dog (2) and 

retighten the two screws (3). 

*  The spacer (1) is in the parts box.

 

 

 
 

㊎᧼

 

1527B

1525B

1524B

1526B

www.ae-sewingmachines.co.uk

Summary of Contents for DA-9280

Page 1: ...DA 9280 THREE NEEDLE TWIN NEEDLE FEED OFF THE ARM DOUBLE CHAIN STITCHER English w w w a e s e w i n g m a c h i n e s c o u k ...

Page 2: ...DA 9280 w w w a e s e w i n g m a c h i n e s c o u k ...

Page 3: ... on the machine itself are provided in order to ensure safe operation of this machine and to prevent accidents and injury to yourself or other people The meanings of these indications and symbols are given below Indications CAUTION The instructions which follow this term indicate situations where failure to follow the instructions could cause injury when using the machine or physical damage to equ...

Page 4: ...ghtning may cause problems with correct operation Installation Machine installation should only be carried out by a qualified technician ᴾ Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done The sewing machine weighs approximately 49 kg The installation should be carried out by two or more people Do not connect the power cord until installation i...

Page 5: ...n after the power is switched off as a result of the motor s inertia Wait until the motor stops fully before starting work 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 so that it does not get into your eyes or onto your skin If care is not taken inflammation can result Fur...

Page 6: ... difficult to read please contact your nearest Brother dealer 1 2 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 3 Direction of operation Safety devices A Finger guard B Thread take up cover C Pulley cover etc 1462B 1544B Rear view w w w a e s e w i n g m a c h i n e s...

Page 7: ...djustment 14 8 3 Adjusting the stitch length 15 8 4 Puller feed adjustment Machines with puller 15 9 CLEANING 17 9 1 Daily cleaning 17 9 2 Changing the lubricating oil every three months 17 10 STANDARD ADJUSTMENTS 18 10 1 Needle bar height adjustment 18 10 2 Needle and looper timing adjustment 19 10 3 Timing of loopers running clear of needles 20 10 4 Needle guard adjustment 21 10 5 Feed dog heigh...

Page 8: ...1 1 NAMES OF MAJOR PARTS 1 Machine pulley 4 Needle bar 2 Front cover 5 Upper thread nipper 3 Presser foot 6 Lapper Safety devices 7 Thread take up cover 8 Finger guard 9 Pulley cover 1463B w w w a e s e w i n g m a c h i n e s c o u k ...

Page 9: ...pm㧕 3 600 rpm No of needles 2 3 2 3 3 2 3 Needle TV X 5 SCHMETZ Nm130 Organ Needle 21 SCHMETZ Nm 140 Organ Needle 22 SCHMETZ Nm130 Organ Needle 21 SCHMETZ Nm 140 Organ Needle 22 Needle gauge mm 4 8 3 16 5 6 7 32 6 4 1 4 8 0 5 16 9 6 3 8 6 4 1 4 6 4 1 4 8 0 5 16 9 6 3 8 6 4 1 4 6 4 1 4 6 4 1 4 8 0 5 16 9 6 3 8 Max stitch length 4 2 mm Min arm size 171 mm 3 OPTIONAL PARTS If the upper thread breaks ...

Page 10: ...ld be 40 mm in thickness and should be strong enough to hold the weight and withstand the vibration of the sewing machine Drill holes as indicated in the illustration below A Chain hole B Motor mounting holes 3 places C Cotton stand hole D Ground hole 1655B w w w a e s e w i n g m a c h i n e s c o u k ...

Page 11: ... the correct motor from those listed in the table below Refer to the instruction manual for the motor for details on installing and using the motor Power Motor Single phase 2 pole 400 W motor Three phase 2 pole 400 W motor Motor pulley and V belt For details on the relationship between the motor pulleys and belts refer to the table below The belt should be an M type V belt Pulley O D 85 90 95 100 ...

Page 12: ...er to the machine head Cautions regarding table and legs When installing the legs to the table adjust the heights of the legs so that the machine head can be set up horizontally If the machine head is not horizontal it will adversely affect the lubrication of the needle bar mechanism and seizing or abnormal wear may occur 5 1 Installing the machine head 1 Install the pulley cover base 2 on the mac...

Page 13: ...he belt hole 7 4 Install the two mounting plates 8 to the machine bed 1 and the pulley cover base 2 with the two set screws 9 5 Secure the two collars 10 the four rubber cushions 11 and the two washers 12 to the table with the two screws 13 as shown in the illustration 6 Connect the presser foot lifter chain 6 to the knee lifter lever 14 and the foot lifter pedal 15 1469B 1471B 1470B w w w a e s e...

Page 14: ...t the ground wire 2 to the motor in accordance with the instructions in the instruction manual for the motor 5 3 Installing the pulley cover 1 Place the belt 2 onto the machine pulley 1 Pull the belt 2 upward when installing the pulley cover A 3 2 Place the pulley cover A 3 so that it is in between the eight pulley cover sheets 4 and then secure it to the pulley cover base with the four screws 5 3...

Page 15: ... and the motor pulley 2 2 Turn the nuts 4 to adjust so that there is 20 30 mm of deflection in the V belt 3 when it is pressed at the midway point with a force of 9 8 N 5 5 Assembling the cotton stand 1 Assemble the cotton stand while referring to the instruction manual for the cotton stand 2 Install the cotton stand to the table with the nut 1 1476B 1477B 1478B w w w a e s e w i n g m a c h i n e...

Page 16: ...ine B be sure to add more oil 2 Insert the rubber cap 2 and then close the front cover 1 Periodically loosen the oil drain screw 4 to drain out any oil which collects in the front bed oil sump After draining the oil tighten the oil drain screw 4 Periodically wipe away any oil which collects in the rear bed oil sump 5 with a cloth 3 Turn the machine pulley 6 so that the oil feeding pipe cap 7 is fa...

Page 17: ...r place any objects against the machine while sewing machine is operating as this may result in personal injury or damage to the machine 1 Insert the power cord plug into the wall outlet and then turn on the power switch 2 Depress the treadle slightly and check that the machine pulley 1 starts to turn in the direction of the arrow A If the direction of rotation is reversed change the direction of ...

Page 18: ...ower switch before installing the needle However the motor will keep turning even after the power is switched off as a result of the motor s inertia Wait until the motor stops fully before starting work The machine may operate if the treadle is depressed by mistake which could result in injury 1 Turn the machine pulley until needle clamp 1 is raised to the highest position 2 Loosen the three set s...

Page 19: ... operate if the treadle is depressed by mistake which could result in injury 6 4 Threading the upper threads CAUTION Turn off the power switch before threading the upper thread However the motor will keep turning even after the power is switched off as a result of the motor s inertia Wait until the motor stops fully before starting work The machine may operate if the treadle is depressed by mistak...

Page 20: ...njury 㨯 When threading the needle 㨯 When replacing the needle 㨯 When not using the machine and when leaving the machine unattended Do not touch any of the moving parts or place any objects against the machine while sewing as this may result in personal injury or damage to the machine 7 1 Sewing 1 Turn on the power switch 2 Depress the foot lifter pedal 1 and place the work under the presser foot 3...

Page 21: ...the work positively and keep the work from slipping If the machine is being used with the puller attached depending on works the puller pressure can be adjusted as appropriate to the work by turning the presser adjust screw 2 Good stitches Loose bad stitches Appearance of seam when upper thread tension is too weak 1494B 1495B Becomes weaker Upper thread Lower thread Lower thread Upper thread Becom...

Page 22: ...er the stitch length becomes 4 Release the feed adjustment button 2 Check that the feed adjustment button 2 pops back out again 5 Adjust the needle guard Refer to 10 4 Needle guard adjustment 6 Close the front cover 1 NOTE Do not press the feed adjustment button 2 while the machine is operating as doing so may damage the machine parts Be sure to adjust the needle guard after changing the stitch le...

Page 23: ...uller feed Fabric with high elasticity Fabric with low elasticity Correct Neither non alignment nor sewing wrinkles Neither non alignment nor sewing wrinkles Insufficient Non aligned and wrinkled Non aligned and wrinkled Excessive Non aligned and very wavy Non aligned and very wavy 1499B 1504B 1503B 1501B 1502B 1500B Feed direction Feed direction w w w a e s e w i n g m a c h i n e s c o u k ...

Page 24: ...er rubbish 2 After cleaning close the looper cover 1 Lubrication Refer to 5 6 Lubrication Checking 1 Check that the threads are threaded correctly Refer to 6 3 Threading the lower threads and 6 4 Threading the upper threads 2 If the tips of the needles are broken replace the broken needles 3 Carry out a trial sewing 9 2 Changing the lubricating oil every three months The lubricating oil should be ...

Page 25: ...hts of the needles 1 At this time adjust so that each needle 1 is in the center of the needle hole 3 in the needle plate 2 1 Remove the screw 4 and then remove the presser foot 5 2 Turn the machine pulley to drop the needle bar to its lowest position 3 Remove the rubber cap 6 4 Loosen the screw 8 and adjust so that the distance between the bottom of the needle clamp 7 and the top of the needle pla...

Page 26: ...cap screw 8 and then loosen two set screws 10 on lower belt wheel 9 7 While holding the looper 1 so that the tip of the looper 1 does not move from the center of the needle 2 turn the machine pulley 5 toward you by hand to move the needle 2 up or down until the distance between the tip of the looper 1 to the top of the needle hole A is approximately 2 9 mm 8 Tighten the two set screws 10 securely ...

Page 27: ...turning direction and then loosen the set screw at the rear just enough so that the forward back cam can be adjusted 3 After adjusting tighten the two set screws 4 Loosen the set screw 7 of the needle guard 6 and then move the needle guard 6 to a position where it does not touch the needle 2 5 Loosen the screw 8 and move the looper holder 9 in the direction of the arrow to adjust so that the loope...

Page 28: ... by the needle guard 3 and the clearance between the needle 2 and the looper 1 tip is 0 0 05 mm 6 Tighten the set screw 5 NOTE Be sure to adjust the needle guard 3 after changing the stitch length If you use the sewing machine without adjusting the needle guard 3 skipped stitches may occur or the looper tip may become broken 10 5 Feed dog height adjustment Make an adjustment so that the highest pa...

Page 29: ...n at the lowest position 2 Loosen the screw 3 and then move the upper thread take up guide 2 up or down to adjust so that the distance from the top of the upper thread take up guide 2 to the center of the upper thread take up hole 1 is 6 7 mm The higher the upper thread take up guide 2 positions the greater the upper thread loops will be 3 Tighten the screw 3 10 8 Upper thread nipper adjustment Ad...

Page 30: ...d take up base 3 when the looper starts moving backward 1 Insert the screwdriver through the adjusting hole A in the lower thread take up base 3 and loosen the two set screws 4 2 Raise the lower thread take up 1 until it is 5 mm up from the thread take up base 3 3 After the adjustment retighten the two set screws 4 securely 10 11 Installing the lapper Insert the lapper guide plate from the front i...

Page 31: ...etighten the screw 3 10 13 Puller timing adjustment Machines with puller Make an adjustment so that when the needle bar is down at the lowest position the mark A on the timing collar 1 is in line with the reference line B 1 Turn the machine pulley toward yourself until the mark A on the timing collar 1 meets the reference line B 2 Loosen the two set screws 2 and turn the machine pulley toward your...

Page 32: ...ssed by mistake which could result in injury The parts shown in the illustration below are necessary when installing the needle thread cooler Needle thread cooler NAME OF PARTS Q TY CODE 1 Thread cooler tank assembly 1 S58045㧙001 2 Taptite Cup B M3 12 2 087311㧙216 3 Felt 1 S08761㧙100 4 Thread guide 1 S58047㧙001 5 Screw Pan SM 4 37 40 7 2 062680㧙712 6 Silicone oil 1 S06704㧙001 1 Install the thread ...

Page 33: ...INSTALLING OPTIONAL PARTS㩷 26 DA 9280 4 Fill the thread cooler tank assembly 1 with the silicone oil 6 5 Pass the thread through the thread guide 4 1539B 1540B w w w a e s e w i n g m a c h i n e s c o u k ...

Page 34: ...nipper is incorrect Adjust the lower thread tension plate clearance of the upper thread nipper correctly 22 1 Upper thread is not tight The tension release lever position is incorrect Adjust the tension release lever position correctly 22 The needle is not properly installed Install the needle correctly 11 The looper points are dull Replace the loopers with good ones 19 The needle and looper timin...

Page 35: ...ctly 22 The needle holes are too small for threads Check the needle and thread counts 11 6 Upper and lower threads are breaking The loopers are damaged Smooth the loopers with an oiled grindstone or replace the damaged parts 19 The material is being pushed or pulled with excessive force during sewing Do not push or pull the material with excessive force 㧙 The needle is not properly installed Insta...

Page 36: ...INSTRUCTION MANUAL Г ᇨ MANUAL DE INSTRUCCIONES Printed in Japan ᇈኈ ׂڊ Impreso en Japón http www brother co jp DA 9280 SA9518 001 2008 03 B 1 http www brother com w w w a e s e w i n g m a c h i n e s c o u k ...

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