00197467-01_SM_DLM3-4_Kunde_en.pdf - 第53页

Service Work 3.17.1 Adjusting the Star to the Star's Magnetic Neutral Positi on Repla cing the Star Service Manual SIPLACE Placement Heads DLM3/DLM4 53 Installation ► Push all the segments (6) slightly outwards. ► I…

Service Work

Replacing the Star 3.9.3 Mechanical Adjustment (From Version 03)

52 Service Manual SIPLACE Placement Heads DLM3/DLM4

3.17

3.17 Replacing the Star

Replacing the Star

Parts, equipment and tools

▪ Star assembly DLM1, DLM2 [00341181-xx]

▪ Star assembly DLM3, DLM4 [03056626-xx]

Overview

Preparation

► Remove the head from the machine. For details about removing and fitting the placement head, refer

to the service manual for your machine.

Removal

► Dismantle the front part of the head (see "3.2 Removal/Installation of Head Front Part" [ ➙ 19]).

► Remove all sleeves (1) and place them in a sleeve box or on a clean, soft surface.

► When removing the star, mark its installation position with a pen, for easier refitting.

► Loosen the three M3x8 hexagon socket-head screws (5).

► Lift the star slightly and then rotate it to lift it upwards and off.

1. Sleeve

2. Star, mounted/ DLM2

3. Star drive

4. Head front part

5. 3 x M3x8 hexagon socket-head screws

6. Segment

7. Raceway

NOTICE

Laboratory gloves

Wear laboratory gloves when you remove the sleeves from the star.

Service Work

3.17.1 Adjusting the Star to the Star's Magnetic Neutral Position Replacing the Star

Service Manual SIPLACE Placement Heads DLM3/DLM4 53

Installation

► Push all the segments (6) slightly outwards.

► Insert small Allen keys (e.g. size 2) into the holes for the star fastening screws (5).

► Hold the star over the star drive shaft (3), so that the Allen keys slide into the threaded holes in the

star drive.

► Insert the star.

► Push all the segments inwards so that the segment ball bearings slide into the raceway (7).

► Check that the star is seated flat on the drive shaft.

► Loosely tighten the three M3x8 hexagon socket-head screws on the star so that the screws can still

move slightly in the fixing holes.

► Further installation is performed by following the above instructions in the reverse order.

3.17.1

3.17.1 Adjusting the Star to the Star's Magnetic Neutral Position

Adjusting the Star to the Star's Magnetic Neutral Position

When adjusting the star, the aim is to make sure the vertically aligned segment axis of segment No. 1

corresponds with the magnetic neutral position of the star stepping motor.

► To do this, fit the star zero point gauge and insert the gauge pin into the gauge for the star and into

segment no. 1, until it reaches the stop.

► Pull the motor line plug of the star motor off the slot on the intermediate distributor and connect the

motor line to the power supply.

► Connect the power supply unit to the mains power.

► Tighten the three M3x8 hexagon socket-head screws on the star and remove the gauge pin.

► To do this, reinsert the gauge pin into the star gauge and insert into the segment, until it reaches the

stop.

► Disconnect the power pack from the power source.

► Please check:

⇨ That the gauge pin can be inserted easily.

⇨ That the star does not rotate out of its current position as a result.

If both of these conditions are fulfilled, the star has been fitted correctly.

NOTICE

Sleeves

► Remove any remaining sleeves before fitting the star.

► Wear laboratory gloves when you remove the sleeves from the star.

NOTICE

Do not trap the hoses

► Make sure that the vacuum hoses of the segments are not pinched.

NOTICE

You may need to slightly grease the valve plunger

Grease the sealing lips economically with the greasing tool or with a lint-free cloth coated with

ISOFLEX TOPAS NCA 52.

► Read the relevant section of the maintenance manual for your machine.

Service Work

Replacing the Star 3.17.1 Adjusting the Star to the Star's Magnetic Neutral Position

54 Service Manual SIPLACE Placement Heads DLM3/DLM4

► Repeat the adjustment procedure if the gauge pin does not slide easily into the hole.

CAUTION

The power pack operating time is limited!

The maximum operating time of the power pack for the star motor is five minutes. Do NOT ex

ceed this time. If you have to disconnect the power pack from the power source because it has

been operating for five minutes, always insert the gauge pin before switching the power pack

back on again.

1. Star drive, digital (DLM3, DLM4)

2. 4 x M5x16 hexagon socket-head screws

3. Head front part

► If you still can not fit the star in the magnetic neutral

position of the star motor, follow the instructions be

low:

► Loosen the four M5x16 hexagon socket-head screws

(2) for fixing the star drive (1) and turn the star drive

in the direction that will allow the star to be adjusted

with respect to the magnetic neutral position.

► Tighten the four hexagon socket-head screws.

► Loosen the three M3x8 hexagon socket-head screws

(5) fixing the star again and repeat the adjustment

procedure.

NOTICE!

The star is correctly installed, if it does not turn out of po

sition when the gauge pin is removed during zero current

star operation.

► Remove the gauge for the star.

► Insert the power cable plug connector for the star

drive into the slot on the intermediate distributor. The

plug connector is an anti-rotation connector.

► Fit the front part of the head onto the back part of the

head.

► Check the magnetic neutral position.