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Brother DH4-B980 Lower thread presser, Sub presser, Standard Adjustments, 0986Q, 0987Q

Models: DH4-B980

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9. STANDARD ADJUSTMENTS

9-18. Lower thread presser (-02)

(2)

(1)

The lower thread presser (1) operates at the same time as upper thread trimming is carried out.

The end of the lower thread is securely held between the lower thread presser (1) and the throat plate (2).

0986Q

9-19. Sub presser (-02)

(1)

Trimming of the lower thread and gimp is carried out when the cloth pressers rise. The sub presser (1) endures that the material does not move during thread trimming, in order to maintain a stable thread length after trimming.

0987Q

RH-9800

Page 61

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Brother DH4-B980 instruction manual Lower thread presser, Sub presser, Standard Adjustments, 0986Q, 0987Q

Contents

DH4-B980 RH-9800 Please read this manual before using the machineELECTRONIC EYELET BUTTON HOLER INSTRUCTION MANUAL1. Safety indications and their meanings SAFETY INSTRUCTIONSSymbols IndicationsInstallation 2. Notes on safetyDANGER Environmental requirementsMaintenance and inspection CleaningSewing If using a work table which has casters, the casters3. Warning labels 9. STANDARD ADJUSTMENTS CONTENTS10.SUMMARY OF DIP SWITCHES 8. CLEANING AND MAINTENANCE1. NAMES OF EACH PART 1. NAMES OF EACH PART2-1. Specifications 2. SPECIFICATIONS2. SPECIFICATIONS DH4-B980- RH-98003-1. Table processing diagram 3. INSTALLATION3.INSTALLATION 3-3. Installing the machine head 3-2. Installing the motor3. INSTALLATION Raising the machine head 3-4. Installing the oil containerLowering the machine head 3.INSTALLATION3-6. Tightening the V-belt 3-5. Installing the spool stand3. INSTALLATION 3-8. Installing the air unit and the valve assembly 3-7. Installing the control boxConnecting the knife valve cables 3.INSTALLATION3. INSTALLATION 3-9. Connecting the ground wires and the wiringsPower switch installation position 3.INSTALLATION 3-10. Connecting the air tubesharness Sub presser *2Adjusting the air pressure 3-11. Installing the air hosesTo increase the air pressure To decrease the air pressure3.INSTALLATION 3-12. Connecting the power cord1114Q 0839Q4-1. Adding oil 4. LUBRICATION4-2. Lubrication 4. LUBRICATION4.LUBRICATION 5. CORRECT USE 5-1. Initializing settings5-2. Changing the lower thread and gimp trimming 5. CORRECT USE5. CORRECT USE 5-3. Checking the direction of machine operation5-5. Threading the upper thread 5-4. Installing the needle5. CORRECT USE For upper and lower thread trimming specifications -01 For upper thread trimming specifications5-6. Threading the lower thread 5. CORRECT USE5-7. Threading the gimp 5-8. Setting the material5. CORRECT USE 6-1. Panel button and switch names 6. USING THE OPERATION PANEL AND FRONT PANEL6. USING THE OPERATION PANEL AND FRONT PANEL Operation panel part names6-3. Changing the mode 6-2. Selecting a program number6-4. Changing the cutting timing Note If6. USING THE OPERATION PANEL AND FRONT PANEL 6-5. Setting a programC.Setting the buttonhole length B.Setting the shape of the eyelet1134Q 1135QD.Setting the tacking length F. Setting the stitch pitchE.Setting the offset 6. USING THE OPERATION PANEL AND FRONT PANELI. Setting the knife position compensation H. Setting the cutting space1146Q 1148QP2. Setting Y correction P1. Setting X correctionP3. Setting θ 1 correction 6. USING THE OPERATION PANEL AND FRONT PANEL6. USING THE OPERATION PANEL AND FRONT PANEL P4. Setting θ 2 correction1158Q 1159Q6. USING THE OPERATION PANEL AND FRONT PANEL 6-6. Using the memory switchBar tacking at the sewing start to prevent fraying Bar tacking at the sewing end to prevent fraying6. USING THE OPERATION PANEL AND FRONT PANEL 6. USING THE OPERATION PANEL AND FRONT PANEL 6-7. List of error codes7. SEWING 7-1. Using the EMERGENCY STOP switchIn automatic mode In manual mode or in automatic mode7. SEWING 7-2. SewingAdjusting the lower thread take-up spring tension and stroke 7-3. Adjusting the thread tensionTension adjustment Stroke adjustmentExplanation of the cutting space function 7-4. Needle and knife positionRelationship between knife position and eyelet shape 7. SEWING7. SEWING Knife position compensation functionKnife position compensationResetting the production counter 7-5. Using the production counterDisplaying the production counter Counting down to zero methodProgramming procedure 7-6. Using a cycle program7. SEWING 7. SEWING 7-7. Setting the feed bracket to the front position7. SEWING 7-9. Using feed mode7. SEWING 7-10. Using manual mode0784Q 0785Q7-11. Changing the cycle program counter 7-12. Setting the number of home position cycles7. SEWING 1185Q7. SEWING 7-13. Returning to the home position1189Q 1171Q8-1. Cleaning 8. CLEANING AND MAINTENANCE8. CLEANING AND MAINTENANCE 8-2. Draining the oil9-1. Adjusting the height of the spreader and looper 9. STANDARD ADJUSTMENTS9. STANDARD ADJUSTMENTS Spreader height9. STANDARD ADJUSTMENTS 9-2. Adjusting the needle and looper timing9. STANDARD ADJUSTMENTS 9-3. Adjusting the loop stroke9-5. Adjusting the clearance between the looper and needle 9-4. Adjusting the height of the needle bar9. STANDARD ADJUSTMENTS 9-7. Adjusting the spreader mounting positions 9-6. Adjusting the needle guard9. STANDARD ADJUSTMENTS 0964Q9-9. Adjusting the needle racking width stitch width 9-8. Adjusting the spreader timing9. STANDARD ADJUSTMENTS Changing in the cutting block operation time 9-10.Changing the knife cutting length Replacing the cutting block9. STANDARD ADJUSTMENTS Adjusting the contact between the knife and the cutting block 9-11. Adjusting the contact between the knife and the cutting blockFiling the cutting surface of the cutting block 9. STANDARD ADJUSTMENTS9-12. Replacing the knife 9-13. Adjusting the cutting pressure9. STANDARD ADJUSTMENTS Measuring the opening amount 9-14. Adjusting the cloth opening amount9. STANDARD ADJUSTMENTS 9-16. Adjusting the trimming of the lower thread and gimp 9-15. Adjusting the trimming of the upper thread9. STANDARD ADJUSTMENTS 9. STANDARD ADJUSTMENTS 9-17. Adjusting the gimp length after trimming9-19. Sub presser 9-18. Lower thread presser9. STANDARD ADJUSTMENTS 0986Q10-1. Front panel DIP switches 10. SUMMARY OF DIP SWITCHES10. SUMMARY OF DIP SWITCHES 10. SUMMARY OF DIP SWITCHES 10-2. Circuit board DIP switchesDANGER 11. TROUBLESHOOTING 11. TROUBLESHOOTINGProblem MACHINE HEADUpper thread is not cut cleanlyLower thread is not cut Thread slips out15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone INSTRUCTION MANUALPrinted in Japan 118-980