ELNA EXplore 240 Manual de usuario

SERVICE MANUAL

eXplore 240

(USA)

CONTENTS

TROUBLESHOOTING ........................................................................ 1–3

SERVICE ACCESS

FACE COVER / BELT COVER ....................................................... 4

BASE PLATE .................................................................................. 5

FRONT COVER .............................................................................. 6

REAR COVER ................................................................................ 7

MECHANICAL ADJUSTMENT

TOP TENSION ................................................................................ 8

BOBBIN TENSION.......................................................................... 9

PRESSER BAR HEIGHT AND ALIGNMENT ................................ 10

NEEDLE SWING............................................................................11

NEEDLE DROP ............................................................................ 12

CLEARANCE BETWEEN NEEDLE AND HOOK (NO. 1) ............. 13

CLEARANCE BETWEEN NEEDLE AND HOOK (NO. 2) ............. 14

FEED DOG HEIGHT ..................................................................... 15

NEEDLE BAR HEIGHT ................................................................. 16

NEEDLE TIMING TO SHUTTLE ................................................... 17

BUTTONHOLE FEED BALANCE ................................................. 18

FEED BALANCE ON STRETCH STITCH .................................... 19

BARTACK FEED OF BUTTONHOLE ........................................... 20

DISENGAGEMENT OF CAM FOLLOWER .................................. 21

NEEDLE MOVEMENT FOR STRAIGHT STITCH ........................ 22

MOTOR BELT TENSION .............................................................. 23

WIRING ................................................................................................. 24

MODEL:eXplore 240

TROUBLESHOOTING

PROBLEM CAUSE REMEDY REFERENCE

1. SKIPPING 1. NEEDLE IS NOT INSERTED INSERT THE NEEDLE PROPERLY.

STITCHES PROPERLY.

2. NEEDLE IS BENT OR WORN. CHANGE THE NEEDLE.

3. INCORRECTLY THREADED RETHREAD.

4. NEEDLE OR THREAD ARE USE THE RECOMMENDED

INAPPROPRIATE FOR SEWING NEEDLE AND THREAD.

FABRIC BEING SEWN.

5. SEWING ON STRETCH USE A #11 BLUE TIP NEEDLE.

FABRIC

6. INAPPROPRIATE NEEDLE SEE MECHANICAL P. 16

BAR HEIGHT ADJUSTMENT

“NEEDLE BAR HEIGHT.”

7. INAPPROPRIATE NEEDLE SEE MECHANICAL P. 17

TO HOOK TIMING ADJUSTMENT “NEEDLE

TIMING TO SHUTTLE.”

8. INAPPROPRIATE NEEDLE SEE MECHANICAL P. 13, 14

TO HOOK CLEARANCE ADJUSTMENT “CLEARANCE

BETWEEN NEEDLE AND

HOOK.”

2. FABRIC NOT 1. INCORRECT FEED DOG SEE MECHANICAL P. 15

MOVING HEIGHT ADJUSTMENT “FEED DOG

HEIGHT.”

2. THREAD ON BOTTOM SIDE MAKE SURE TO BRING

OF FABRIC IS JAMMED UP. BOTH NEEDLE AND BOBBIN

THREAD UNDER THE FOOT

WHEN STARTING SEWING.

3. FEED DOG TEETH ARE CHANGE THE FEED DOG.

WORN.

MODEL:eXplore 240

PROBLEM CAUSE REMEDY REFERENCE

3. BREAKING 1. INITIAL SEWING SPEED IS START WITH MEDIUM SPEED.

UPPER TOO FAST.

2. THREAD PATH IS USE THE PROPER THREAD

INCORRECT. PATH.

3. NEEDLE IS BENT OR DULL. REPLACE WITH A NEW NEEDLE.

4. UPPER THREAD TENSION IS ADJUST UPPER THREAD P. 8

TOO STRONG. TENSION CORRECTLY.

5. NEEDLE SIZE IS USE APPROPRIATE NEEDLE

INAPPROPRIATE FOR AND THREAD FOR FABRIC

FABRIC. IN USE.

6. NEEDLE EYE IS WORN. CHANGE THE NEEDLE.

7. NEEDLE HOLE IN NEEDLE REPAIR THE HOLE OR

PLATE IS WORN OR BURRED. REPLACE THE NEEDLE PLATE.

4. BREAKING 1. INCORRECTLY THREADED THREAD BOBBIN CASE

BOBBIN BOBBIN CASE. CORRECTLY.

2. TOO MUCH THREAD IS ADJUST THE POSITION OF

WOUND ON THE BOBBIN. STOPPER.

3. LINT IS STUCK INSIDE THE CLEAN THE HOOK RACE.

HOOK RACE.

4. THREAD QUALITY IS CHANGE TO A HIGH QUALITY

TOO LOW. SEWING THREAD.

5. THREAD IS JAMMING CLEAR OUT THE JAMMING

AROUND THE BOBBIN. THREAD.

6. BOBBIN THREAD TENSION IS ADJUST BOBBIN THREAD P. 9

TOO STRONG. TENSION CORRECTLY.

5. NEEDLE 1. NEEDLE IS HITTING THE SEE MECHANICAL P. 12

BREAKS NEEDLE PLATE. ADJUSTMENT “NEEDLE DROP.”

2. NEEDLE IS BENT OR WORN. CHANGE THE NEEDLE.

3. NEEDLE IS HITTING THE SEE MECHANICAL P. 13, 14

HOOK RACE. ADJUSTMENT “CLEARANCE

BETWEEN NEEDLE AND HOOK.”

4. THE FABRIC MOVES WHILE SEE MECHANICAL P. 11

THE NEEDLE IS PIERCING ADJUSTMENT “NEEDLE SWING.”

IT, OR THE NEEDLE ZIGZAGS

WHILE IN FABRIC.

5. FABRIC IS BEING PULLED TOO GUIDE THE FABRIC GENTLY

STRONGLY WHILE SEWING. WHILE SEWING.

THREAD

MODEL:eXplore 240

6. NOISY 1. BACKLASH BETWEEN SEE MECHANICAL P. 14

OPERATION SHUTTLE HOOK GEAR AND ADJUSTMENT “CLEARANCE

LOWER SHAFT GEAR IS TOO BETWEEN NEEDLE AND HOOK

GREAT. (NO. 2).”

2. LOWER SHAFT GEAR IS ELIMINATE THE LOOSENESS.

LOOSE.

3. INAPPROPRIATE BELT SEE MECHANICAL P. 23

TENSION. ADJUSTMENT “MOTOR BELT

TENSION.”

4. UPPER SHAFT WORM IS LOOSE. ELIMINATE THE LOOSENESS.

5. NOT ENOUGH OIL. OIL ALL MOVING PARTS.

7. DEFORMATION 1 . INAPPROPRIATE ZIGZAG SEE MECHANICAL P. 11

OF PATTERN SYNCHRONIZATION. ADJUSTMENT “NEEDLE

SWING.”

2. INAPPROPRIATE SEE MECHANICAL P. 21

DISENGAGEMENT OF CAM ADJUSTMENT

FOLLOWER. “DISENGAGEMENT OF CAM

FOLLOWER.”

3. UPPER THREAD TENSION ADJUST UPPER THREAD P. 8

IS TOO STRONG. TENSION CORRECTLY.

4. INAPPROPRIATE FEED SEE MECHANICAL P. 19

BALANCE ADJUSTMENT "FEED BALANCE

ON STRETCH STITCH."

PROBLEM CAUSE REMEDY REFERENCE

MODEL:eXplore 240

SERVICE ACCESS

FACE COVER

(TO REMOVE)

1. Remove the face cover by removing the cap (A) and screw (B).

(TO ATTACH)

2. Attach the face cover with the screw, and then, replace the cap.

BELT COVER

1. Loosen screw (C).

2. Take the belt cover out.

Face cover

(C)

Belt cover

(B)

(A)

MODEL:eXplore 240

SERVICE ACCESS

BASE PLATE

(TO REMOVE)

1. Remove 4 screws (A).

2. Remove the base plate.

(TO ATTACH)

3. Follow the above procedure in reverse.

Base plate

(A)

MODEL:eXplore 240

SERVICE ACCESS

FRONT COVER

(TO REMOVE)

1. Remove the face cover, and belt cover (see pages 4).

2. Loosen setscrews (A), (B), (C), (D) and (E), and then, remove the front cover by removing

setscrews (F), (G) and (H).

NOTE: Pull to release from hook (I).

(TO ATTACH)

3. Mount the front cover in reverse procedure of the removing.

(A)

(B)

(F)

(H)

(G)(I)

Front cover

(E)

MODEL:eXplore 240

SERVICE ACCESS

REAR COVER

(TO REMOVE)

1. Remove the face cover and belt cover (see pages 4).

Note: Pull up the spool pins.

2. Loosen setscrews (A), (B), (C) and (D) (2 pcs.), and then, remove the rear cover by removing

setscrews (E), (F), (G) and (H).

NOTE: Remove the rear cover in the order of (X) (lower part) (Y) (upper part) (Z)

(presser foot lifter part). (Remove the bed cover plate together.)

(TO ATTACH)

3. Mount the rear cover in reverse procedure of the removing.

(A)

(B)

(C)

(D)

(E)

(F)

(G)

(H)

(Y)

(Z)

(X)

Rear cover

Spool pin

Bed cover plate

MODEL:eXplore 240

MECHANICAL ADJUSTMENT

TOP TENSION

TO CHECK:

The standard upper thread tension should be 65–95 g when pulling the thread (cotton thread #50) in

the direction of (A) with the tension dial at “3.” (Make sure the foot is lowered.)

If the tension is out of the standard range, adjust it as follows:

ADJUSTMENT PROCEDURE:

1. Remove the front cover (see page 6).

2. Turn the adjusting nut (B) in the direction of (C) when the upper thread tension is too tight.

Turn the adjusting nut (B) in the direction of (D) when the upper thread tension is too loose.

3. Attach the front cover.

(A) (B)

(C)

(D)

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