Duerkopp Adler 744-122 User manual

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.
1
3 2
4
3

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
18
17
14
15
13
16
11 12
5 17 6 7 10
8 9
4

– 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
5

– 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
17
16
15 5
17
18 19
2022 21
6

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.
1
2
3
7

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.
1
2
3
5
4
8

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.
9