Reliable 4220SW Manuale utente

INDUSTRIAL SEWING MACHINE INSTRUCTION MANUAL

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4220SW

1. Brief introduction

1.5. Main specifications

10.

11.

12.

13.

14.

15.

16.

Installing the oil pot

Lubrication

Installing the needle

Loading the bobbin in the bobbin case

Removing and installing the bobbin case

Adjusting the bobbin winder attention assembly

Winding the bobbin thread

Threading

Adjusting the stitch length

Adjusting the thread tension nut

Adjusting the thread take-up spring

Presser foot lifter

Adjusting the pressure of the presser foot

Relationship between needle and rotating hook

Adjusting the height and presser foot walk

CONTENT

OPERATION INSTRUCTION

1. Arm and bed

2. Upper shaft and thread take-up mechanism

3. Needle bar vibrating parts

4. Upper feed parts

5. Feed mechanism.

6. Lower shaft mechanism

7. Thread tension and bobbin thread winder parts

8. Knee lifter mechanism

9. Lubrication....

10.Accessories

PARTS MANUAL

INSTRUCTION MANUAL

1. Brief introduction

This machine is suitable for sewing the heavy

materials of car seats, sofas, tarpaulins, tents, bags,

etc.

1.5. Main specifications

ApplicationMedium and heavy duty

Max. sewing

speed 1800 s.p.m max

Max. stitch 9mm

speed

Needle bar 36mm

stroke

DP*17 (Nm125-Nm180)

standard Nm160 (23#)

Needle

LubricationSemi-lubrication

HookLarge hook

Height of

presser foot lift 9mm by hand, 16mm by knee

MotorMotor

an oil pan

Less Many

2. Installing the oil pot (Fig. 2)

1.Install the bolt ①, oil seal ② and spacer ③

onto the oil reservoir, and then put the cushion ⑤

and spacer ⑧ into the set screw ④, then set it by

nut ⑥.

2.Tighten the oil pot ⑦ onto the bolt ①.

3. Lubrication (Fig. 3)

1.Lubricate behind face plate cover.

2.Machine body lubrication

a.Lubricate the place as the arrows indicate once a

week;

b.When running the machine for the first time or after

a long period of non-use, please oil the place as the

arrows indicate. Take down the top cover ②, then oil

each felt and oil wick. ①

3.Rotating hook lubrication

a.For hook lubrication add oil to oil hole ③ until oil

level is between L and H ⑤. Check once a week.

Always keep the oil level between L and H ⑤.

b.When adjusting the oil flow to the rotating hook,

turn the adjusting screw ⑥ clockwise to increase the

flow and counter clockwise ⑦ to decrease the flow.

Note: Excess lubrication results in leaking.

a.Loosen the face plate screw;

b.Open the face plate ① in the direction of the

arrow;

c.Lubricate the place as the arrow shows every

day;

d.Close the face plate;

e.Tighten the screw.

Long slot left

4. Installing the needle (Fig. 4)

1.Turn the balance wheel to raise the needle bar to

its highest position;

2.Loosen the set screw ② and make the long

groove of the needle ① face towards the left;

3.Insert the needle into the needle bar;

4.Tighten the set screw ②. To make sure needle is

all the way up check visibility on fig 3.

5.Loading the bobbin in the bobbin case (Fig. 5)

1.When loading the bobbin into the bobbin case, the

thread should be passing from left to right in the

bobbin.

2.Use your thumb and index finger to secure the

bobbin in the bobbin case from spinning. Bring the

thread through the slot ① in the bobbin case and

under the flat tension spring ②.

Needle threads from left to right

6.Removing and Installing the bobbin case (Fig. 6)

7.Adjusting the bobbin winder attention

assembly (Fig. 7)

1.By loosening the screws ② in fig 7, you can

move the tension assembly in and out to center

the thread in the bobbin when winding.

2.Insert the bobbin thread guider ③ into the

machine head.

8. Winding the bobbin thread (Fig. 8)

1.Thread in numerical order from ① to ④, then

wind the bobbin winder.

2.Press down the winding bar A.

3.Loosen the set screw B and adjust the adjusting

plate until the winding amount reaches to 80% of

the outside diameter.

4.After winding, the winding bar A will separate and

stop automatically.

1.When removing the bobbin case from the hook

①

assembly, lift the latch and pull the case straight out.

2. Align the bobbin case with the rotating hook shaft

then insert it. Align the inside of the rotating hook

②and the latch ③, then install the bobbin case by

pressing it until you hear a “click” sound.

StrongStrong

Strong Weak

WeakWeak

9. Threading (Fig. 9)

Thread in the order as shown in Fig. 9

10.Adjusting the stitch length (Fig. 10)

11.Adjusting the thread tension nut (Fig. 11)

1. Turning the dial ① towards a larger number

increases the stitch length and turning it towards a

lower number decreases the stitch length.

2. To make a reverse stitch, press the lever ② all

the way down.

1. Adjusting the thread tension nut of the needle:

Turn the nut ① clockwise to increase the tension

of the needle thread; to reduce the tension of the

needle thread turn it anti-clockwise.

2. Adjusting the tension of the bobbin thread:

Turn the large screw ② on the flat spring

clockwise to increase the tension and

counterclockwise to decrease the tension.

Strong

Weak

Small Large

12.Adjusting the thread take-up spring

(Fig. 12)

1.Changing the travel of the thread take-up spring:

a.Loosen the set screw ②, move the stopper ③

leftward and rightward, then adjust the thread

take-up spring ①.

b.Move the stopper ③ rightward to increase the

movement of the take-up spring and left to

decrease it.

2.Changing the tension of the thread take-up

spring:

Loosen the nut ④, turn the spring shaft ⑤

counter-clockwise to increase the tension; turn

it clockwise to reduce the tension.

13. Presser foot lifter (Fig.13)

1.Stopping the presser foot when it is lifted:

Lift the lifting bar ① in the direction of the arrow.

When the presser foot is lifted by 9mm, stop it.

2.When lowering the presser foot, put down the

lifting bar ① to make the presser foot go back to its

original place.

14.Adjusting the pressure of the presser

foot(Fig. 14)

Turn the adjusting screw ① rightward to increase

the pressure; turn it leftward to reduce the

pressure. After adjustment, tighten the set nut

②.

15. Relationship between needle and

rotating hook(Fig. 15)

1. Adjust the stitch length dial to 0.

2. Turn the balance wheel to lift the needle bar

from its lowest position by 2.1mm. loosen the

screw ①, adjust the distance between up end of

the eye of needle ② and rotating hook point ③

to 1mm, then tighten it.

3. Turn the balance wheel to lift the needle bar

from its lowest position by 2.1mm. Loosen the

two set screws ④, turn the rotating hook, align

the rotating hook point ③ with the center of the

needle ②, then tighten the two screws ④.

4. Loosen the two set screws ④, move the

rotating hook leftward and rightward. Align the

rotating hook point ③ and the center of the

needle ②, and adjust the clearance between

rotating hook point and needle to 0.02-0.05mm,

then tighten the screw.

16.Adjusting the height and pressure foot

walk (Fig. 16)

To adjust the height of the presser foot walk loosen nut

②, slide the lever up to increase the height of the walk

or slide the lever down to decrease the height of the

walk.

How to adjust when the inside foot and outside foot are

not rising at equal height:

a. By turning the handwheel towards you, bring the foot

that is lifting the highest all the way up.

b. By turning the handwheel towards you, bring the foot

that is lifting the highest, halfway down in its travel

towards the needle point. Then loosen screw ① the foot

will drop and make contact with the needle plank, now

tighthen screw ① to secure the walk.

Indice

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