JUKI MC37 Manuale utente

INSTRUCTION MANUAL

MC37,40

No.01

70002037

CONTENTS

!. SPECIFICATIONS AND FEATURES .............................................................................1

@. INSTALLATION AND OPERATION OF COMPONENTS...............................................2

1. Installing the connecting rod MC40............................................................................................ 2

2.Adjusting the connecting rod air valve MC40............................................................................. 2

3.Assembling the cloth chip and chain-off thread suction device .............................................. 3

4.Connectingtheexiblehose........................................................................................................ 3

5.Adjusting the suction force .......................................................................................................... 4

6.Installing the waste bag ................................................................................................................ 4

7.Piping the air components............................................................................................................ 5

INSTALLING PROCEDURE OF THE EXCLUSIVE CORD FOR MF (INSTALLING SC-921)

.....6

– 1 –

PREFACE

Congratulations on your purchase of the JUKI MC37 and MC40 cloth chip suction devices for the MF-7900-H22,23

and MF-7900-E11.

The devices are used to pneumatically collect cloth chips by depresing the motor pedal.

We wish the devices help achieve clean working environment in your factory.

!. SPECIFICATIONS AND FEATURES

Model MC37 MC40

Name Pneumatic cloth chip suction device with a

solenoid valve

Pneumatic cloth chip suction device with a pedal

connecting rod air switch

Applicable machines MF-7900-H22,23 and MF-7900-E11 provided

with the control box (SC-921)

MF-7900-H22,23 and MF-7900-E11

Major features •

At the moment when the pedal is depressed,

the device is pneumatically actuated to suck up

cloth chips.

• It is possible to dump thread waste or cloth

chips with ease since the cloth chip suction

portion is the bag type.

•

At the moment when the pedal is depressed,

the device is pneumatically actuated to suck up

cloth chips.

• It is possible to dump thread waste or cloth

chips with ease since the cloth chip suction

portion is the bag type.

CAUTION

This Instruction Manual is intended for the MC37,MC40 To use this product when it

is installed on a machine (sewing machine), make sure to read and fully understand

the “IMPORTANT SAFETY INSTRUCTIONS” provided in the Instruction Manual for the

machine on which this product is to be installed in advance.

For a clearer view of the MC37,MC40 illustrations of the machine (sewing machine) are

simplied,andillustrationsofsomeofthesafetydevicesarepartiallyomitted.

– 2 –

@. INSTALLATION AND OPERATION OF COMPONENTS

1. Installing the connecting rod MC40

Taking care of the vertical direction of the connecting rod,

x the top end of the rod on motor lever Ausing the screw

of ball joint 1, and x the bottom end of the rod on pedal

lever Busing the screw of ball joint 2. Loosen xing

screws 3in the connecting rod, and adjust the length of

the rod properly.

2. Adjusting the connecting rod air valve MC40

1) Loosen setscrew 1in the valve holder, and adjust

the position of air valve properly.The standard position

of the air valve is obtained when the valve pin lightly

comes in contact with the head of rivet.

2) Make the sewing machine actuate, and check the

response time of the air valve. If it is too early, separate

the valve pin from the rivet head, and adjust the response

time properly.

3) Once the air valve is properly positioned, securely

tighten setscrew 1in the valve holder. At this time,

check the position of thrust collar 2so as to eliminate a

play in the spring.

Light contact

– 3 –

3. Assembling the cloth chip and chain-off thread suction device

1) Fix two tube clips 1to mounting plate 4with screws

2 and tting lock nuts 3.

2) Fix mounting plate 4with (tube clip) installing wood

screws 5so that tube clips 1face the operator's

side at the bottom face of the table while satisfying the

dimensions of the table shown in the gure.

Rear of the frame

Front of the frame

3) Fit waste remover body 6to tube clips 1which have

been xed in step 2), t mufer 7and hose clamp 8to

waste remover body 6, and tighten it with hose clamp 8.

4. Connectingtheexiblehose

1) Cut exible hose 1to a length required for connection

on side A. In case of MF-7900-H22,23, attach it to cloth

chip pipe (asm.) 2and waste remover body 4.

In case of MF-7900-E11, attach it to pipe (asm.) 3and

waste remover body 4, and clamp each with hose

clamp 5.

At this time, take care not to allow the exible hose to

excessively slacken.

Then connect mufer

on side

and reducing socket

At this time, also cut the hose to an appropriate length.

After connecting the tube to them, clamp them with

hose clamp 5.

550mm

MF-7900-E11

MF-7900-H22,23

Theexiblehoseisslightlytoolongtoprovide

a margin, however, cloth chips may remain

in the middle of the hose if the hose slackens

excessively.So,donotmakethehoselonger

thanisnecessaryorslackenitexcessively.

– 4 –

When Ais turned clockwise, the suction force is

decreased. For the mechanical valve of MC37, the suction

force can be adjusted by turning Bwith a screwdriver or

the like.

5. Adjusting the suction force

6. Installing the waste bag

1) Install waste bag plate 2to waste bag housing 1with

screw 3, washer 4and nut 5. In this state, however,

plate 2rotates. To stop the state, insert stop plug 6

into the hole of waste bag housing 1and waste bag

plate 2so that plate 2faces the direction as shown in

the gure.

2) Fix waste bag plate 2to the position as shown in the

gure with wood screws 7.

3) Insert reducing socket 8into the cloth chip inlet port of

waste bag housing 1, and clamp it with hose clamp 9.

4) Install the mouth of waste bag !0 so as to run parallel

with the groove of waste bag housing 1, and clamp it

with a piece of string.

30mm

50mm

Drawing of the table (rear)

Switch Drawer

Front of the

frame

Stand Stand

– 5 –

7. Piping the air components

Fix solenoid valve 3under the table with wood screws supplied as accessories.

Refer to the piping diagram shown for piping the air components.

PIPING DIAGRAM FOR THE MC37

PIPING DIAGRAM FOR THE MC40

[

[OUT

[

MF-7900-E11

[

MF-7900-H22,23

[

[OUT

MF-7900-E11

[

MF-7900-H22,23

[

The air tube is slightly too long.

Cut it to an appropriate length before connecting it.

– 6 –

❶❷

❸

❹

III. INSTALLING PROCEDURE OF THE EXCLUSIVE CORD FOR MF

(INSTALLING SC-921)

Fig. 1

Connect the exclusive cords for MF to the respective spec-

ied connectors.

・

Thread trimmer sensor cord ❶ → CN42

・

Presser lifter cord ❷ → CN37

・

Connect solenoid valve cords ❸ of MC to connector 36.

(Connecting No. : No. 14 → White and No. 7 → black)

・

Solenoid valve cord of MC and thread trimmer cord ❹

→ CN36

Fig. 1 shows the connection of connector

of UT57 and MC37 as an example. When

depressing the motor pedal after completing

the connection of connector of MC, a signal

appears, and it is not necessary to set the

panel. In addition, refer to (III-3. Installing and

setting of SC-921) of the Instruction Manual

for MF-7900(D)/UT55,56,57 when MC37 does

not start.

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