RotoMix Service Manual Oct 2002

Table of Contents

Vers. (10/02)

Table of Contents 1

Safety Instructions ... 1

1.1 1.2 1.3 1.4 1.5 1.6 1.7

Marking of Instructions in the Service Manual ... 1 Personnel Qualifications and Training ... 2 Risks Incurred if the Safety Instructions are not Observed ... 2 Safety First when Working ... 2 Safety Instructions for the Service Technicians ... 2 Safety Insturctions for Repair Work ... 2 Unauthorised Modifications and Manufacture of Spare Parts ... 3

2

Contacts and Address for Servicing ... 3

3

Before Starting Service ... 4

3.1 3.2

Tools Required ... 4 Other Equipment Required... 4

4

General Description ... 5

4.1 4.2

Description of the Product ... 6 Troubleshooting ... 7

5

RotoMix ... 9

5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11

Cover ... 9 Revolving Platform Including Capsule Holder ... 9 Open Housing ... 11 Board ... 12 Microswitch ... 12 Touch-pad ... 13 Mains Unit ... 13 Upper Section ... 14 Motor incl. Mounting, Clutch and Drive Wheel ... 14 Lower Section ... 15 Assembling Housing ... 16

6

Functional Test ... 17

7

Circuit Diagram / Exploded View / List of Spare Parts ... 19

7.1 7.2 7.3

Circuit Diagram ... 19 Exploded View ... 20 List of Spare Parts ... 21

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Table of Illustrations

Table of Illustrations ROTOMIX

Fig.2

Revolving Platform Including Capsule Holder

Fig.3

Open ROTOMIX

Vers. (10/02)

Fig.1

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Safety Instructions

1

Safety Instructions The service manual contains basic instructions which must be complied with when repair work is being carried out. Accordingly, the service technician must not fail to read this service manual before carrying out any repair work. It must be accessible at all times at the place where the machine is being operated. Moreover not only the general safety instructions listed in the section dealing with safety should be observed but also special safety instructions included in the other main sections.

1.1

Marking of Instructions in the Service Manual Those safety instructions included in this service manual which could lead to endangerment of persons if ignored are marked with the general danger symbol

safety symbol as per DIN 4844 - W9; where a warning is given concerning electrical power then

the safety symbol as per DIN 4844 - W8 is used. In the case of safety instructions where non-compliance could endanger the machine and its functions, the word

ATTENTION

has been added. Information affixed directly to the machine, such as Vers. (10/02)

m markings showing direction of rotation m markings for electrical and mechanical connections must never be ignored and must always be kept completely legible.

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Safety Instructions

1.2

Personnel Qualifications and Training Personnel carrying out repair work on this equipment must possess the corresponding qualifications for this work. The owner must lay down precise rules regarding the area of responsibility, the duties and the supervision of the personnel. If the personnel are not in possession of the necessary skills then they should be trained and instructed in these. If necessary this can be done by the manufacturer or supplier at the owner’s request. In addition the owner must ensure that his personnel fully understand the contents of the service manual.

1.3

Risks Incurred if the Safety Instructions are not Observed Failure to observe the safety instructions may lead to both endangerment of persons as also of the environment and the machine. If you do not comply with safety instructions this can result in the loss of any claims for losses. In particular non-observance of safety instructions may bring with it the following potential hazards: m failure of major machine functions m failure of the methods prescribed for maintenance and repair m endangerment of persons by electrical, mechanical and thermal effects.

1.4

Safety First when Working The safety instructions drawn up in this service manual, existing national regulations concerning accident prevention, and any internal work, operational and safety regulations of the owner must all be observed.

1.5

Safety Instructions for the Service Technicians Potential endangerment from electrical power must be excluded (for details see for example VDE regulations and those of the local power supply authority).

1.6

Safety Instructions for Repair Work

Vers. (10/02)

The owner must ensure that all repair work is carried out by authorised and qualified technicians who have acquainted themselves in depth with the service manual. Work on the equipment will only be carried out when it has been shut down. Immediately after repair work is finished all safety and guard facilities must be replaced or reactivated.

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Contactsand Address for Servicing

1.7

Unauthorised Modifications and Manufacture of Spare Parts Conversion or modification of the machine is only permitted with the approval of the manufacturer. The use of original spare parts and accessories authorised by the manufacturer is in the interests of safety. Use of other parts may cancel manufacturers liability for the ensuing consequences.

2

Contacts and Address for Servicing If you have questions regarding the operation of the Elipar FreeLight, fitting new parts or concerning servicing, please contact us at the following address:

Region: Europe, Nothern Africa, Near East 3M ESPE AG Technical Service ESPE Platz D-82229 Seefeld Germany

Primary Contact Peter Cabell Tel.: +49-8152-700-1451 Fax: +49-8152-700-1520

Region: US, Canada, Mexico, Central America, South America, Japan, Asia, Australia Primary Contact Tony Wald Tel.: +1-651-575-5859 Ed Skwor Tel.: +1-651-575-5884 Fax: +1-651-736-9431

Vers. (10/02)

3M Healthcare Service Center Building 502-1W, Suite 200 3350 Granada Ave N. Oakdale, MM 55128 United States of America

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Before Starting Service

3

Before Starting Service 3.1

Tools Required Open-ended spanner 5.5 mm Phillips screwdriver Universal pliers Screwdriver for slotted screws Diagonal cutter Socket spanner 10 mm span

3.2

Other Equipment Required

Vers. (10/02)

Felt-tip pen Soldering iron Multimeter Stroboscope

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General Description

4

General Description Cover

Capsule Holder

Revolving Platform Housing Upper Part

Housing Lower Part

Touch Pad

Vers. (10/02)

Fig.1 ROTOMIX

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General Description

4.1

Description of the Product

CAUTION Sections of the ROTOMIX carry hazardous voltages! Always switch off at the mains before carrying out any repairs. Observe the relevant safety precautions, VDE specifications and the ROTOMIX operating instructions. Follow the order of the individual repair steps exactly, to avoid injury and/or damage. Before starting up the appliance, ensure that the line voltage and frequency given on the rating plate agree with the line voltage available. The appliance should only be operated with a closed, undamaged protective cover, otherwise there is a danger of injury. The protective cover should only be opened after the capsule holder has come to a halt.

ROTOMIX is a mixing device for materials and cement for fillings in capsules. Unlike conventional capsule mixing devices it uses a rotary movement. This increases the efficiency of the mixing process and the paste is characterised by homogenous mixing. In addition, it is possible to centrifuge the mixed material in the rotary mixing process. Depending on the viscosity, this can reduce air bubbles in the material. For this reason, as well as the straight mixing operation, ROTOMIX offers an operating mode with 3 seconds of centrifugation after mixing. The centrifuging time of 3 seconds is not added to the mixing time on the display, the time shown always corresponds to the straight mixing time. ROTOMIX is equipped with four programme keys (P1-P4), which can be programmed to the most frequently used mixing and centrifuging times. In addition, via the keys “8” and “10”, two fixed mixing times can be selected.

Vers. (10/02)

Connect the ROTOMIX to the mains and switch on using the mains switch at the back of the device. Programme 1’s mixing time is shown on the display. To programme the basic adjustments, set the operating mode or the mixing time, and put in the capsule, refer to the ROTOMIX operating instructions.

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General Description

4.2

Troubleshooting CAUTION Before starting up the ROTOMIX ensure that the mains voltage given on the back of the device agrees with the available voltage. mExternal fault checking Inspect the ROTOMIX for mechanical damage before fault checking Connect the ROTOMIX to the mains with the accompanying mains cable and switch on using the mains switch at the back of the device. As a starting control the time display shows 88, then jumps to the relevant set time P1. With the cover open, press the START button. The digital display should flash, the alarm sound and the sign blink. Close the cover and press the START button again. The motor should run and stall when the cover is opened. The mixing process is interrupted and the error message “Lo” appears. If the motor does not switch on and off when the cover is opened and closed, check the microswitch and change if necessary. m Fault location in accordance with following fault location diagram

Vers. (10/02)

CAUTION When testing with an open power supply unit, there are hazardous voltages in the area of the mains switch, microswitch, motor, the mains fuse and the mains transformer.

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General Description

BEGIN

Connect to mains, switch the device on

Touch pad illuminated ?

N

Mains fuse defective ?

N

Y

Power cable defective ?

N

PC board defective, exchange if necessary

Y Y

Exchange power cable

Activate device

Exchange mains fuse

Program running O.K. ?

N

Blinking display "Π"

N

Motor not working display "Lo"

N

Touch pad defective ?

N

PC board defective, exchange if necessary

Y Y Y

Exchange touch pad

Exchange motor

Y

Exchange micro switch

Mixing O.K. ?

N

Drive belt defective ?

N

Clutch disengaging ?

N

Y Y

Exchange motor complete

Vers. (10/02)

Y Exchange drive belt

BEGIN

END

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RotoMix TM 5.1

Cover Changing the cover 1. Raise cover approx. five centimetres 2. Raise cover hinges with the aid of a screwdriver 3. Lock home new cover by pressing - diagonally downwards - on both hinges

5.2

Revolving Platform Including Capsule Holder The capsule holder can be opened by turning anti-clockwise and is stopped by the rotary mixing movement. When the mixing process is completed the capsule can be taken out again by turning it.

CAUTION Never operate the device without the capsule being inserted in the capsule holder.

Capsule Holder

Vers. (10/02)

Revolving Platform

Fig. 2 Revolving platform including capsule holder

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Changing the Revolving Platform 1. Remove cap 2. Open nut on motor axle for Revolving Platform

PLEASE NOTE Left-handed thread.

3. Lift Revolving Platform upwards 4. Install new Revolving Platform in reverse order

PLEASE NOTE Place and maintain drive belts on drive wheel of motor and capsule holder. Put on cover.

5. Secure screw with an anaerobic screw locking product e.g. Delo ML 5128 6. For functional test see section 6

Vers. (10/02)

PLEASE NOTE Keep screws in consecutively numbered dishes or stick them with sellotape to the individual parts. This will facilitate subsequent assembling of the ROTOMIX.

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5.3

Open Housing Cover Housing Upper Part Capsule Holder incl. Revolving Platform

Spring

Microswitch Motor Unit complete

Touch Pad

PC Board Housing Lower Part Fig. 3 Open ROTOMIX

CAUTION Always unplug the ROTOMIX at the mains before opening it.

Vers. (10/02)

Opening the housing 1. To remove cover see section 5.1 2. To remove Revolving Platform see section 5.2 3. Take off spacer disk from motor axle 4. Unsolder litz wires of clutch from board 5. Remove Phillips screws from the underside of the device 6. Lift off upper section of housing 7. Swing upper section of housing to the left and lay next to lower section (see Fig. 3) 8. Assemble device see section 5.11 9. For functional test see section 6

PLEASE NOTE Keep the screws in consecutively numbered dishes or stick the screws to the individual parts with sellotape. This will facilitate subsequent assembling of the ROTOMIX.

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5.4

Board Changing the board 1. To open housing see section 5.3 2. Pull ribbon cable for the touch-pad out of the board’s plug; but unlock beforehand 3. Mark the board’s connection leads

PLEASE NOTE Board connections are correspondingly marked. For this see also section 7.1 circuit diagram.

4. Remove board’s connection leads 5. Undo Phillips screws 6. Take board out of housing 7. Install new board in reverse order 8. To assemble housing see section 5.11 9. For functional test see section 6

5.5

Microswitch For safety reasons it is not possible to start the device with the safety cover open. In this case, the time display flashes and a fault signal sounds. Opening the protective cover during mixing poses a high risk of injury. For this reason the mixing process is interrupted and the fault display „Lo“ appears.

Vers. (10/02)

Changing the microswitch 1. Open housing see section 5.3 2. Unsolder connection leads 3. Undo screw and lock nuts 4. Install new microswitch in reverse order 5. Install housing see section 5.11 6. For functional test see section 6

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5.6

Touch-pad User-friendly programming of the device is possible via the touch-pad. To facilitate setting the mixing time, pre-programmed keys for 8 and 10 second mixing are available. Furthermore four programmable keys for individual mixing programmes are provided. To program these settings see operating instructions. Changing the touch-pad 1. To open housing see section 5.3 2. Pull ribbon cable for the touch-pad out of the board’s plug; but undo the lock beforehand 3. Carefully take off touch-pad 4. Possibly remove board 5. Install new touch-pad in reverse order 6. To install device see section 5.11 7. For functional test see section 6

5.7

Mains Unit Changing the mains unit 1. Open housing see section 5.3 2. Mark and unsolder connections to the mains unit 3. Compress ratchets on both sides of the mains unit 4. Prise out mains unit 5. Install new mains unit in reverse order

PLEASE NOTE Re-position fuses.

Vers. (10/02)

6. To install device see section 5.11 7. For functional test see section 6

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5.8

Upper Section Changing the upper section of the housing 1. To open housing see section 5.3 2. To remove board see section 5.4 3. To remove microswitch see section 5.5 4. To exchange touch-pad see section 5.6 5. Remove spring lock for fixing cover 6. Install new upper section in reverse order

PLEASE NOTE: Fix litz wires with the aid of plug-on holder.

7. To assemble device see section 5.11 8. For functional test see section 6

5.9

Motor incl. Motor Mounting, Clutch and Drive Wheel Ball-bearing mounted motor with built-in, automatically re-setting over-heat cut-off protection system. Changing the unit 1. To open housing see section 5.3 2. Unsolder clutch litz wires from the board 3. Undo earth cable from motor unit 4. Undo three Phillips screws from the floor of the device 5. Lift unit out of lower section 6. Install unit in reverse order

CAUTION Align motor unit. Tighten up the earth cable in the motor mounting and attach earth symbol.

Vers. (10/02)

7. To assemble device see section 5.11 8. For functional test see section 6

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5.10 Lower Section Exchange lower section of housing 1. To open housing see section 5.3 2. To install mains unit see section 5.7 3. Dismantle motor unit 4. Install new lower section of housing in reverse order

PLEASE NOTE Fix litz wires with the aid of plug-on holder.

Vers. (10/02)

5. To assemble device see section 5.11 6. For functional test see section 6

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5.11 Assembling Housing

CAUTION Before installing the ROTOMIX, make sure that all mains connections are securely hard-soldered or clamped. Plug-on holders must be put back in the places provided. Make sure that the board connections, in particular the yellow/green protective conductor, sit tight in the terminal strip.

1. Push touch-pad’s ribbon cable into the connector and lock.

PLEASE NOTE Observe correct direction.

2. Put cover on the lower section 3. Screw housing together from underneath

CAUTION Ensure cable routing is correct – there must be no litz wires in the Revolving Platform area.

4. Solder litz wires from the motor board 5. Vertically align light barriers 6. To install Revolving Platform including Capsule Holder see section 5.2

CAUTION Do not grease toothed belt.

Vers. (10/02)

7. To put on cover see section 5.1 8. For functional test see section 6

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Functional Test

6

Functional Test Before assembling the housing sections ensure the positioning of the motor unit and check the cable routing. The final inspection and testing of the device should be implemented in accordance with the relevant test regulation after every repair which is carried out.

CAUTION When working on electrical devices the valid regulations are to be observed.

ROTOMIX assembled, without Revolving Platform m Protective conductor test Motor mounting against Ground Contact of Power Cable (R<0.1Ω) ROTOMIX assembled m Control basic setting (default values) (refer also to operating instructions) P1 12s - M+C P2 9s - M+C P3 7s - M+C P4 5s - M+C 10s M+C 8s M+C M= Mixing C= Centrifuging (3s) m Control Revolving Platform Mounting position (ensure equal distance from the housing) Fixing screw firmly in place m Check capsule holder Mounting position Easy movement Ensure slide valve is running free

Vers. (10/02)

m Check microswitch Open cover by 3 cm max. ð operating of microswitch must be audible If “Start” button is pressed when cover is open ð display must flash and alarm sound m Check motor brake Activate Rotomix and open cover - turntable must come to a halt within 2s

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