Juki LU-2828ES-7 Bruksanvisning

Juki Symaskin LU-2828ES-7

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LU-2828ES-7

INSTRUCTION MANUAL

CONTENTS

1. SPECIFICATIONS 1 ............................................................................................................

2. INSTALLATION 2 ................................................................................................................

2-1. Installation of the sewing machine 2 ....................................................................................................

2-2. Installing the oil shield 5 .......................................................................................................................

2-3. Pneumatic components 5 ......................................................................................................................

2-4. Installing the thread stand 6 .................................................................................................................

3. PREPARATION OF THE SEWING MACHINE 7 ................................................................

3-1. Lubrication 7 ...........................................................................................................................................

3-2. Attaching the needle 9 ...........................................................................................................................

3-3. Attaching and removing the bobbin 9 ..................................................................................................

3-4. Threading the hook 10 ...........................................................................................................................

3-5. Winding a bobbin .............................................................................................................................. 10

3-6. Threading the machine head ........................................................................................................... 11

3-7. How to set the model of the machine head 12 ....................................................................................

3-8.

Adjusting the machine head 14 .....................................................................................................................

3-9. Installing the attachment 16 ..................................................................................................................

4. ADJUSTING THE SEWING MACHINE 17 .........................................................................

4-1. Adjusting the stitch length 17 ...............................................................................................................

4-2. Thread tension 18 ..................................................................................................................................

4-3. Thread take-up spring 19 ......................................................................................................................

4-4. Adjusting the pressure of the presser foot 19 .....................................................................................

4-5. Needle-to-hook relation 20 ....................................................................................................................

4-6. Adjusting the hook needle guard 21 ....................................................................................................

4-7. Adjusting the bobbin case opening lever 22 .......................................................................................

4-8. Adjusting the moving knife, the counter knife and the bobbin thread clamp 23 .............................

4-9. Adjusting the thread trimming cam timing 25 .....................................................................................

4-10. Adjusting the condensation stitch 26 ................................................................................................

4-11. Adjusting the amount of the alternating vertical movement of the walking foot and the

presser foot 27 .......................................................................................................................................

5. OPERATION OF THE SEWING MACHINE 27 ...................................................................

5-1. Hand lifter 27 ..........................................................................................................................................

5-2. Resetting the safety clutch 27 ..............................................................................................................

5-3. Adjusting the automatic presser foot lifter 28 .....................................................................................

5-4. Fixing the feed adjusting dial 29 ...........................................................................................................

5-5. Normal-/reverse-feed stitch needle entry points alignment at the time of automatic reverse

feed stitching 30 .....................................................................................................................................

5-6. Operation switches 31 ...........................................................................................................................

5-7. Knee switch 33 .......................................................................................................................................

5-8. Function setting for the SC-923 36 .......................................................................................................

6. SEWING SPEED TABLE 39 ...............................................................................................

7. TROUBLES IN SEWING AND CORRECTIVE MEASURES 40 .........................................

– 1 –

No. Item Application

1 Model LU-2828ES-7

2 Model name 1-needle, unison-feed, lockstitch machine with automatic thread trimmer (with 2.7-

fold vertical axis hook/needle thread clamp function/direct drive type)

3 Application Medium- to heavy-weight materials, car seat, furniture

4 Sewing speed Max. 3,500 sti/min

(See "6. SEWING SPEED TABLE" p.39.) *1

5 Needle SCHMETZ 134-35 (Nm 125 to Nm 180) (Standard : Nm 140)

6 Applicable thread size for sewing #30 to #5

7 Applicable thread size to be cut #30 to #5

8 Stitch length Max. 9 mm (forward/reverse feed)

9 Stitch length dial 2-pitch dial

10 Presser foot lift Hand lifter : 10 mm

Automatic presser foot lifter : 20 mm

11 Stitch length adjusting

mechanism

By dial

12 Reverse stitch adjusting method Air cylinder type (with touch-back switch)

13 Thread take-up Link thread take-up

14 Needle bar stroke 40 mm

15 Amount of the alternate vertical

movement

1 mm to 9 mm (Alternate vertical dial adjustment type)

16 Hook Full-rotary vertical-axis 2.7-fold hook (Latch type)

17 Feed mechanism Box feed

18 Top and bottom feed actuation

mechanism

Timing belt

19 Thread trimming method Cam-driven scissors type

20 Lubrication Automatic lubrication by oil tank (with oil gauge)

21 Lubricating oil JUKI New Defrix Oil No. 1 (equivalent to ISO standard VG7)

or JUKI MACHINE OIL No. 7

22 Bed size 643 mm × 178 mm

23 Space under the arm 347 mm × 127 mm

24 Hand wheel size Outer diameter : ø123 mm

25 Motor/Control box SC-923

26 Machine head weight 65.5 kg

27 Rated power consumption 600VA

28 Noise - Equivalent continuous emission sound pressure level (L

pA) at the workstation:

A-weighted value of 81.0 dB; (Includes K

pA = 2.5 dB); according to ISO

10821- C.6.2 - ISO 11204 GR2 at 3,000 sti/min.

- Sound power level (LWA);

A-weighted value of 85.5 dB; (Includes K

WA = 2.5 dB); according to ISO

10821- C.6.2 - ISO 3744 GR2 at 3,000 sti/min.

*1 The speed setting according to the amount of the alternating vertical movement of the walking foot and presser

foot is automatically carried out.

1. SPECIFICATIONS

Produktspecifikationer

Varumärke:	Juki
Kategori:	Symaskin
Modell:	LU-2828ES-7
Färg på produkten:	Zwart
Husmaterial:	Metal, Plastic
Typ av förpackning:	Doos
Antal per paket:	1 stuk(s)
Antal portar USB 3.2 Gen 1 (3.1 Gen 1) Typ A:	4
Värdgränssnitt:	USB 3.2 Gen 1 (3.1 Gen 1) Type-C
Överföringshastighet:	- Mbit/s
Harmoniserad systemkod (HS):	84719000
Antal portar:	4
Hub-gränssnitt:	USB 3.2 Gen 1 (3.1 Gen 1) Type-C
Kabelhylsa material:	Polyvinyl chloride (PVC)