Duerkopp Adler 744-122 Manuale utente

Contents Page

Part 2: Installation Instructions Cl. 744-122

1. Mobile Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2. Securing for Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3. Height of the Table Top (Working Height) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

4. Checking the V-Belt Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

5. Attaching Machine Parts removed for Shipping . . . . . . . . . . . . . . . . . . . . . . . 4

6. Connection to the Compressed Air Supply . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7. Connection to the Electrical Mains Supply and Checking the Direction of Rotation . 9

8. Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Installing the 744-122

Installation is to occur as described in the following

information.All necessary parts can be found in the

attached package.

Important Notice!

The mains voltage and the nominal voltage

(operating voltage) specified on the spar

below the table top must be identical.

All work on the electrical components is to

be conducted by authorized personnel and

with the mains plug pulled.

The safety instructions are to be observed!

1. Mobile Stand

The stand is equipped with castors for moving the

sewing unit in-house.

When being set up the sewing unit can be lowered

for stable positioning by turning the screws 1 to the

left.

2. Securing for Transport

For the duration of shipping the transport carriage

is held in place by the safety device 3 and the

binding 2. It is essential that both parts be removed

before further work is performed and before

starting operation.

3. Height of the Table Top

(Work Height)

The work height is adjustable between 920 and

1140 mm. The lower height set at the factory is in

most cases the correct height for standing

operation.

After loosening the four feet the raising of the stand

on each side of the unit must be done in one

operation. Use a water level for alignment.

4. Checking the V-Belt Tension

The V-belt tensions from the sewing drive to the

reducer gear and from there to the machine head

have been set at the factory, but must be checking

when setting up after delivery.

With proper tension the V-belts can still be pressed

together in the middle by about 10 mm.

If necessary make an appropriate adjustment after

loosening the sewing drive mounting and the

reducer gear 4.

3 2

5. Attaching the Machine Parts removed for Shipping

For reasons of transport the sewing unit was

dis-assembled to about half of its total length. The

parts are to be re-attached in the following order:

5.1 Left guide for the transport carriage

– Screw the red-marked right mounting rod 9 into

the red-marked hole 10 on the machine arm.

Screw the left mounting rod 7 into the hole 8 on

the machine arm.

Prior to this the mounting for the protective

plate must be affixed.

Attention! The position of the yellow sealed lock

nuts 11 at the end of the rods must not be

changed.

– Screw the black rods 5 into the pipe brackets

17.

– Push the guide pipes 18, held clamped in the

cast part 12, onto the black rods. Then plug the

guide pipes onto the pipe brackets 17.

– Plug the plate 14 on to the ends of the black

rods 5. At the same time place the spacer

washers 13 between the cast part 12 and the

plate.

Tighten all parts with the black nuts 15 so that

the guide pipes lie tightly on the pipe brackets.

– Tighten the support rods with the nuts 16.

1 1 1

11 12

5 17 6 7 10

8 9

– Mount the support 1 between the spars 3 with

the screws 2.

Swing the support 1 up. The hole in the support

plate 6 must fit over the seating pin 5 located

on the bottom of the angle 4.

Align the guide rods 8 horizontally in the

longitudinal (direction of the carriage transport)

as well as the transverse direction. Use a water

level.

Tighten the clamp levers 9 and the nuts 7 in the

appropriate position.

– Insert the belt tensioner 11 and tighten the

self-locking nut 10 so that at the middle of the

frame length S the timing belt can be shifted

from its straight path under a test load of

Fv = 2500g so far that the upper half of the belt

just barely touches the lower half of the belt

under the test load. See sketch.

Testing can be conducted with a spring balance.

Unnecessary high tensioning reduces the life of

the timing belt and causes running noise.

A too low tensioning can lead to the belt teeth

not gripping properly in the sprocket teeth or

that the belt jumps under load.

1 2 3

4 5 6 7

9 8

10 11

– Fasten the hose chain 14 to the mounting rods

12 with the brackets 13. When doing this let the

hose chain hang through a bit so that there is

enough lead length even with the transport

carriage in its extreme right end position.

– Position the left half of the covering hood.

Screw in four screws at the left on the cast part

15.At the same time position the left hood end

piece 16 and fasten.

Align the right mounting 20 so that the safety

hood can be fastened by the three screws 19.

Take care that the opening of the lid for the

socket 21 is unimpaired.

Tighten the fastening screws 22 of the

mounting 20. These can be reached from

underneath.

– Attach the right hood end piece 18 and all of

the safety bars 17 as shown in the illustration.

12 13 14

15 5

18 19

2022 21

5.2 Control unit

The control unit is equipped with the screws 1 and

the locking plate 2 for quick attachment and

removal.

Please note!

Carefully insert the plugs into the back of the

control unit. In as far as these are present, match

the markings on the cables to those and the back

of the unit.

Also note that the plugs are variously equipped

with contact pins and sockets.Take care as to their

arrangement and number when making

connections.

Tighten the plug screws.

5.3 Thread stand

As shown in the illustration screw in the thread

stand rod and lock in place. Attach the thread spool

holder, the unwinder arm and, if required, the

clamp piston.

5.4 Step plate on the pedal

Hang in the step plate 3 as shown in the illustration.

6. Connection to the compressed air supply

For a fault-free operation of the pneumatic controls

observance of the following instructions and a

supply of water-free, lubricated compressed air is

essential.

Operating Pressure and Air Consumption

Operating pressure = 6 bar

Air consumption of the sewing unit

approx.9,0 Nl1) per work cycle

approx.60 Nl per minute

1) Nl = air quantity by normal atmospheric pressure

At the time of maximum air consumption a

minimum pressure below 5 bar is not

allowable.

Therefore the indicator on the pressure guage 2

must be checked when the sewing unit is in

operation.

If the compressed air pressure drop is too great

then a higher compressor output and compressed

air lines with greater diameters are to be used.

Behind the filter 5 cleaned compressed air is

released for use as blower air for cleaning machine

parts and blowing out sewing pieces.

Oil particles remaining in the blower air lead to

malfunctions and soiling of the sewing pieces.

Set the operating pressure of 6 bar by turning the

setting wheel 1 on the pressure regulator.

Turn to the left = Pressure reduction

Turn to the right = Pressure increase

Seating Pressure of the Material Guide Rail

Depending on the material to be sewn the seating

pressure for the material guide rail should be set

between 2 and 3 bar with the pressure regulator 3.

The adjustable pressure can be seen at the

manometer 4.

Connecting the Maintenance Unit

Customer-supplied material is used for the

connection to the compressed air lines.

Connection accessories, order no. 0797 003031,

can be supplied on request.

7. Connection to the electrical mains supply and checking the direction of

rotation

Work on the electrical components of this

sewing unit should only be conducted by

authorized personnel and with the mains

plug pulled.

The mains voltage and the nominal voltage

(operating voltage) must be identical.

The plate specifying the nominal voltage can be

found at the front on the spar under the table top.

Before starting the unit observe the specified

nominal voltage!

For operation with other mains voltages the

information in the enclosed construction circuit

diagram 9870 744001 B is to be noted and the

appropriate connection alterations made.

Also see 1.2 Technical Specification.

Danger of breakage due to wrong direction

of rotation!

It is essential that the direction of rotation be

checked before operation as follows:

– Move the machine head out of its upper needle

position by turning the handwheel.

– Insert plug into mains socket.

– Switch on main switch while observing the

handwheel.

– The handwheel must move in the indicated

machine rotation direction to the 2nd needle

position (needle high position).

By wrong needle position see Section 6 of the

Service instructions.

8. Starting operation

After each switching on of the main switch the

display <-----> appears.

After operating the key on the control unit a

reference run is made which defines the exact

initial position of the transport carriage.

Then the display shows the last program status

entered into the control unit.

Switching the individual steps of the feed

procedure and the sewing start occurs by tapping

the pedal.

When starting sewing material must lie under the

material guide rail.

Transport without material damages the coating of

the material guide rail.

Sewing program and feed procedure are to be set

according to work procedure used.

See the enclosed operating card and Section 4.5 of

the Microcontrol summary in the annex to the

instructions.

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