Duerkopp Adler N291 Bedienungsanleitung

Contents: Page:

Part 2: Installation manual Cl. N291

1. General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2. Assembling the machine stand . . . . . . . . . . . . . . . . . . . . . . 6

3. Completing and screwing on the table top . . . . . . . . . . . . . . . . 6

4. Connecting the sewing machine motor to the table top . . . . . . . . 6

5. Mounting the machine head, positioning the V-belt and

fastening the pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6. Fastening the handwheel and synchronizer . . . . . . . . . . . . . . . 8

7. Connecting the maintenance unit . . . . . . . . . . . . . . . . . . . . . 8

8. Laying and connecting the electrical cables . . . . . . . . . . . . . . . 8

9. Filling in the oil and readying the machine for service . . . . . . . . . 8

10. Making a sewing test and checking the oil supply of

the mist lubricator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1. General information

1.1 Safety instructions

For your special attention!

The mains voltage and the

nominal voltage specified on

the motor name plate must

be identical.

Any work on the electrical equipment

must only be performed by authorized

personnel and with pulled out mains plug.

Observe the safety instructions!

1.2 Machine operation without

material

Prior to operating the machine without

material the feet must be locked in their

lifted position. Also the smallest foot

stroke must be adjusted.

1.3 Table tops

The cutouts of self-manufactured table

tops must be dimensioned as specified in

the sketches on page 4 and 5.

The table tops must also have sufficient

carrying strength and rigidity.

1.4 Parts of the sewing unit

The sewing unit incorporates the

following components:

Thread stand 1

Machine head 2

Belt guard 3 and 7 for the machine head

and motor

Synchronizer 4

Control panel 5

Main switch 6 with cables

Sewing machine motor 8

Knee switch 9

Maintenance unit 10

Machine stand 11

Rods 12

Pedal 13

Drawer 14

Possibly sewing lamp

V-ripped belt

Miscellaneous small parts in the ac-

cessories

700 79

2. Assembling the stand

Assemble the stand parts as shown in the

figure on page 2 and make sure that the

stand rests on all 4 points. To do this, turn

the screw at the machine stand (right-

rear) accordingly.

3. Completing and

screwing on the table

top

Screw the reinforcement strut 1 (page 5)

between the cutouts for the machine

head and motor belt.

To relieve the cables of strain, screw the

cable duct and holder to the table top

underside.

Screw on the main switch.

If necessary, attach the sewing lamp

transformer.

Lay the electrical cables as far as pos-

sible.

Screw on the drawer with its holder.

Screw on the knee switch to activate the

higher foot stroke.

Screw the table top on the stand using

the wood screws B8 x 35.

The positional relationship of table top

and stand is determined by the centres at

the table top underside.

Press the rubber pads for the hinges and

the front rubber pads into the recesses of

the table tops.

4. Connecting the sewing

machine motor to the

table top

4.1 General

Complete motor packages are available

for the machine, consisting of the sewing

machine motor, main switch with cables,

V-belt pulleys, V-ripped belt and other

parts.

The motor packages contain a second

smaller motor pulley for V-ripped belts

that can be used for sewing specifically

thick and closely woven material. With

this pulley up to 3000 spm (otherwise

4000) may be sewn.

The DC motors used on this sewing

machine are operated with a "single pha-

se AC voltage". In the case of several ma-

chines the terminals must be therefore di-

stributed evenly among the phases of the

three phase power supply. Otherwise

some phases might be overloaded.

If the electrical equipment is not supplied

by the factory, it must be manufactured

and checked according to the

EN 60204-3-1 or JEC 204-3-1.

4.2 Fastening the motor

Screw the base of the motor to the table

top. To do this, turn the 3 hexagon head

cap screws M8 x 35 with the washers into

the inserts of the table top.

Fasten the potential sheet 3 such that it

touches both, the motor base 1 and the

hinge 2. The potential sheet conducts

static charges of the machine head via

the motor to the earth.

Fasten the V-belt pulley to the motor

shaft.

Check the arrangement of the terminals

in the transformer of the sewing machine

motor, and if necessary, change. The

arrangement must be adapted to the

voltage supply.

5. Mounting the machine

head, positioning the

V-belt and fastening

the pedal

Mount the machine head in the table top.

Position the V-ripped belt.

Adjust the tension of the V-ripped belt.

To do this, change the position of the mo-

tor with respect to the sewing machine

such that the V-ripped belt can be

pressed inwards by approx. 10 mm

without great effort.

Screw on the belt guard, and thereby set

its belt retainer cam such that the belt

stays in the V-belt pulley when the

sewing machine is tilted backwards.

Screw the belt guard to the machine

head.

Mount the pedal and rods.

For ergonomic reasons, the pedal is to be

aligned laterally and centred with

respect to the needle.

Adjust the rods such that the released pe-

dal is sloped by approximately 10 °. 6

Fastening the hand-

wheel a. synchronizer

To screw on the handwheel 4 proceed as

follows:

Turn the arm shaft until the timing pin 2

that is slid through the hole 3 in the

housing can be inserted right into the

deepest slot of the disk on the arm shaft.

Screw on the handwheel such that its

mark "A" is level with the timing pin 2.

Screw on the synchronizer 5.

When the synchronizer must be screwed

on again after a repair, it is necessary to

redetermine its reference position (see

point 9). This is however no longer

necessary, when the following measures

are taken:

Insert the pin of the accessories into the

hole of the handwheel.

Bore an 8-mm-deep hole 6 into the

synchronizer 5.

Screw on the synchronizer such that the

pin of the handwheel is in its hole.

Fasten the thread stand.

Screw on the control panel.

7. Connecting the

maintenance unit

Screw the maintenance unit to the stand.

Connect the hose with the maintenance

unit and the machine head.

8. Laying and connecting

the electrical cables

Lay the cables.

Connect the cable plugs that are mostly

marked with symbols with the appropriate

bushings.

9. Filling in the oil and

readying the machine

for service

Pour the oil ESSO "SP NK 10" into the

two reservoirs 1 and 7 up to the mark

"MAX".

Pour the oil ESSO "SP NK 10" into the

mist lubricator of the maintenance unit up

to the "groove".

Connect the compressed air hose with

the maintenance unit and the com-

pressed air supply.

Set an operating pressure of 6 bar with

the pressure regulator.

Connect the mains plug with the mains.

Determine the reference position of the

synchronizer.

Proceed as described in the service

manual and the instruction manual of the

motor manufacturer, thereby referring the

reference position to the position D of the

handwheel.

After the reference position has been

determined, the signals "1st position" and

"2nd position" are correctly timed.

10. Making a sewing test

and checking the

supply of the mist

lubricator

With turned off machine, thread the

needle thread and install the bobbin (see

operation manual).

Make a sewing test with material.

To do this, operate the sewing machine

for some minutes at low speed before

sewing at maximum speed.

Check the supply (approx. 1 drop with 10

work cycles) of the mist lubricator and cor-

rect, if necessary.

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