Brother DH4-B980 Standard Adjustments, Adjusting the height of the spreader and looper

Page 49

9. STANDARD ADJUSTMENTS

9. STANDARD ADJUSTMENTS

CAUTION

Maintenance and inspection of the sewing

Disconnect the air hoses from the air supply and

machine should only be carried out by a qualified

wait for the needle on the pressure gauge to drop

technician.

to "0" before carrying out inspection, adjustment

Ask your Brother dealer or a qualified electrician to

and repair of any parts which use the pneumatic

equipment.

carry out any maintenance and inspection of the

 

electrical system.

If the power switch and air need to be left on when

Turn off the power switch and disconnect the

carrying out some adjustment, be extremely

careful to observe all safety precautions.

power cord from the wall outlet at the following

 

times, otherwise the machine may operate if the

If any safety devices have been removed, be

start switch is pressed by mistake, which could

absolutely sure to re-install them to their original

result in injury.

positions and check that they operate correctly

When carrying out inspection, adjustment and

before using the machine.

maintenance.

 

When replacing consumable parts such as the

 

loopers and knife.

 

 

 

9-1. Adjusting the height of the spreader and looper

Spreader height

The clearance between the left spreader (forked spreader) and the left looper must be set to match the thickness of the lower thread. The clearance between the right spreader and the right looper should be as small as possible while still letting the parts slide.

(2)

(1)

(2)

 

(5)

(4)

 

 

(3)

(3)

(3)

 

 

 

(7)

(7)

(5)

 

0947Q

 

(6)

0948Q

 

 

 

 

1.The right spreader (1) and left spreader (2) move by means of springs (3). Adjust so that the spreaders move smoothly between the right spreader stopper (4), the left spreader stopper (5) and the LS-holder bracket (6), with no looseness.

2.If adjustment is necessary, loosen the screw (7) and then move the right spreader stopper (4) or left spreader stopper

(5) up or down.

Looper height

 

(2)

(1)

 

 

 

(8)

(9)

 

 

(10)

0949Q

(10)

0950Q

 

 

 

 

1.Set the clearance between the left looper (8) and the left spreader (2) to the same distance as the thickness of the lower (looper) thread.

2.The clearance between the right looper (9) and the right spreader (1) should be as small as possible.

3.If adjustment is necessary, loosen the screw (10) and then move the left looper (8) and right looper (9) up or down.

RH-9800

43

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Contents DH4-B980 RH-9800 Safety indications and their meanings Safety InstructionsEnvironmental requirements InstallationMaintenance and inspection CleaningSewing Needle bar guard Contents Names of Each Part Specifications SpecificationsTable processing diagram InstallationInstalling the machine head Installing the motorRaising the machine head Installing the oil containerLowering the machine head Tightening the V-belt Installing the spool standInstalling the air unit and the valve assembly Installing the control boxConnecting the knife valve cables Connecting the ground wires and the wirings Connecting the air tubes Adjusting the air pressure Installing the air hosesTo increase the air pressure To decrease the air pressureConnecting the power cord Adding oil LubricationLubrication Filling the arm oil tank1116Q 0862Q 1117Q Correct USE Initializing settingsChanging the lower thread and gimp trimming Checking the direction of machine operation Threading the upper thread Installing the needleFor upper and lower thread trimming specifications -01,-02 For upper thread trimming specificationsThreading the lower thread Threading the gimp Setting the materialOperation panel part names Panel button and switch namesFront panel part name Selecting a program number Changing the modeChanging the cutting timing Setting a program Setting the buttonhole length Setting the shape of the eyeletSetting the offset Setting the tacking lengthSetting the knife position compensation Setting the cutting spaceP2. Setting Y correction P1. Setting X correctionP3. Setting θ 1 correction P4. Setting θ 2 correction OFF Using the memory switchOn Low speed List of error codes Automatic mode Using the Emergency Stop switchManual mode or in automatic mode Sewing1164Q 1165Q Tension adjustment Adjusting the thread tensionStroke adjustment Upper thread tensionExplanation of the cutting space function Needle and knife positionRelationship between knife position and eyelet shape Knife position compensation function Resetting the production counter Using the production counterDisplaying the production counter Counting down to zero methodProgramming procedure Using a cycle programSetting the feed bracket to the front position Using feed mode Using manual mode Changing the cycle program counter Setting the number of home position cyclesReturning to the home position Draining the oil Cleaning and MaintenanceAdjusting the height of the spreader and looper Standard AdjustmentsSpreader height Looper heightAdjusting the needle and looper timing Adjusting the loop stroke Adjusting the clearance between the looper and needle Adjusting the height of the needle barAdjusting the spreader mounting positions Adjusting the needle guardAdjusting the needle racking width stitch width Adjusting the spreader timingChanging in the cutting block operation time Filing the cutting surface of the cutting block Replacing the knife Adjusting the cutting pressureMeasuring the opening amount Adjusting the cloth opening amountAdjusting the trimming of the lower thread and gimp Adjusting the trimming of the upper threadAdjusting the gimp length after trimming Sub presser Lower thread presserFront panel DIP switches Summary of DIP SwitchesCircuit board DIP switches Problem Cause Remedy Thread breaks TroubleshootingSkipped stitches occur Needle breaksCleanly ProblemRemedy Upper thread is not cut Lower thread is not cut15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone

DH4-B980 specifications

The Brother DH4-B980 is an innovative and advanced sewing and embroidery machine designed for both professional use and home enthusiasts. Recognized for its robust performance and user-friendly features, the DH4-B980 stands out in the market.

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In terms of technology, the Brother DH4-B980 incorporates the advanced My Custom Stitch feature, enabling users to create personalized stitch patterns. This functionality sets the machine apart, as it allows for customization to fit specific project needs or personal styles. The machine is also equipped with automatic needle threading and a quick-set drop-in bobbin, adding to overall convenience and ease of use.

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In summary, the Brother DH4-B980 combines speed, versatility, and advanced technology in a single sewing and embroidery machine. Its user-friendly features and innovative capabilities make it an excellent choice for anyone looking to elevate their sewing experience.
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