Interdent INTERCAST 60A User manual

03-2012
INTERDENT D.O.O.
Opekarniška cesta 26, 3000 Celje, Slovenija
Tel: [phone], Fax: [phone]
Email: [email protected], www.interdent.cc
ISO 9001:1994, št. certifikata: SI – Q –304
INTERCAST 60A

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CONTENTS
1. USE
3
2. TECHNICAL DATA
3
3. STRUCTURE OF THE DEVICE
4
4. INSTALLATION
4
5. OPERATING INSTRUCTIONS
5
5.1. Settings
5
5.2. Operation modes
5
5.3. Description of indication lights on the front panel
8
6. REGULATIONS FOR SAFE USE
12
7. IMPORTANT PRACTICAL INFORMATION
12
8. MAINTENANCE
13
9. DECLARATION OF CONFORMITY
14
10. DECLARATION OF WARRANTY
15

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WARNING!
READ THE ENCLOSED INSTRUCTIONS CAREFULLY BEFORE INSTALLING AND STARTING UP THE
DEVICE.
THE INSTALLATION AND THE CONNECTION OF THE DEVICE TO THE POWER SUPPLY SHOULD
ONLY BE CARRIED OUT BY A COMPETENT PROFESSIONAL.
THE DEVICE SHOULD ONLY BE OPERATED BY PERSONS TRAINED IN ITS SAFE USE.
1 USE
The centrifugal casting device INTERCAST 60A is intended only for high-frequency melting and
casting of Co-Cr-Mo, Ni-Cr-Mo alloys and precious metals used in dentistry. The manufacturer
declines all responsibility concerning safety of operation or damage to the device, persons or
things deriving from uses other than the declared.
2 TECHNICAL DATA
Mains voltage
230 V ± 10%/ 50 Hz
Maximum wattage
3 kW
Minimum amount of metal in the melting crucible
7g
Maximum amount of metal in the melting crucible
80g
Material of the melting crucible
ceramics
Material of the melting crucible in precious metal melting
ceramics with graphite insert
Maximum time for melting 30 g of metal
60 s
Cooling
water-based, closed circuit
Setting the power of the high-frequency generator in melting Ni-Cr-Co alloys
and precious metals
manual
Torque setting
manual
Measurements length/height/width
620/660/1060 mm
Weight
120 kg

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3 STRUCTURE OF THE DEVICE
The centrifugal casting device INTERCAST 60A is composed of three autonomous units managed
by joint controls:
3.1 The transistor unit for metal melting, made up of a high-frequency generator, a power-supply
unit and a cooling system
3.2 Centrifugal casting mechanism
3.3 Control box and blocking system
4 INSTALLATION
4.1 Check and, if necessary, refill the coolant water into the tank. Water should reach
up to the mark on the tank.
4.2 Verify the mains voltage (230 V ± 10%) and the safety measures for protection
against electric shock (grounding) at the point of device’s connection to the power
supply network
4.3 The device should be positioned onto a solid and stable surface.
4.4 The arm of the centrifugal mechanism should be in a horizontal position. Level it by
adjusting the feet of the device (with wrenches 14 and 19, and a spirit level) to prevent
vibrations during casting.
4.5 The device can be connected to the power supply network (single-phase protection
contact socket) by means of a plug; connection to a fixed outlet is recommended –in
such case remove the plug on the cable of the casting unit (Warning! This operation can
only be carried out by a competent The diameter of the installation cable leading from
the indoor distribution box to the socket (connection of the device to the power supply
network) should be 3 x 2.5 mm2. The distributor of the device should be protected by a
20 A slow-blow thermal cut-out. No other users should be connected to this circuit.

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5. OPERATING INSTRUCTIONS
5.1 Settings:
To ensure a balanced position of the centrifugal arm as well as the flask with the metal, follow
the procedure below before each casting operation:
loosen the black knob (1) on top of the centrifugal arm
insert the flask in its seat (2)
insert the ceramic crucible in its seat (3).
IMPORTANT! When melting precious metals a graphite insert has to be used.
Place the necessary amount of metal in the ceramic crucible.
Using the setting lever (4) find the appropriate position for the flask seat, so that the flask
is centred, then block the slide by means of a support pin; make sure that the ceramic
crucible does not touch the flask.
Move the ceramic crucible holding slide into a position close to the flask (approximate
distance 3 mm).
Balance out the centrifugal arm by turning the balancing weight (7).
IMPORTANT! The settings are important for preventing vibrations and problems during
casting.
5.2 Operation modes:
After having applied the settings, continue the procedure in the following order
(see Fig. 2):

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5.2.1 Connect the device to the mains through the “Power” main switch. If the upper lid is
closed, indicator light “3” is off (see Fig. 2); it lights up as soon as the lid is opened.
5.2.2 Select the torque by turning potentiometer “P1”, and the melting power by turning
potentiometer “P2”. When melting precious metals (use the graphite insert!) set the
potentiometer P2 knob in position 4; in melting non-precious metals the values have to be set
higher (from 6 to 9).
5.2.3 Close the upper lid. If the inductor is in the bottom position, indicator light “9” is on.
5.2.4 When the inductor is in the bottom position, place the centrifugal arm with the crucible
above the inductor. Using the handle “1” (Fig. 3) lift the inductor as far up as possible in the
terminal position and move it slightly to the left so that it snaps into the appropriate notch.
Make sure that the crucible fits into the inductor perfectly by slightly turning the arm (Fig. 1) and
moving the slide “6”. Indicator light “8” is now on, while indicator light “9” goes out.
IMPORTANT: Preheat the crucible and the metal before casting in order to reduce the melting
time, prevent the flask from cooling too much and protect the crucible from cracks.
The casting torque is selected by turning the P1 potentiometer knob: for precious metals set P1
to level 4, for non-precious metals to levels from 6 to 9.
5.2.5 Before commencing the melting operation, apply the settings in the following order:
1. Turn the P2 potentiometer knob to the far left position (1-minimum power).
2. Insert the necessary amount of metal in the crucible and close the lid –the heating of the
metal starts.
3. Slowly (by 0.5 to 1 grade of the scale per second) turn the P2 potentiometer in clockwise
direction towards the far right position (maximum power).

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4. On completion of the melting phase the indicator light 2–“current protection” – lights up.
Start turning potentiometer P” anti-cloclwise by 0.5 to 1 grade of the scale per second,
decreasing the power.
5. Open the lid of the casting unit; the heating stops, the device goes into stand-by mode
and is ready for casting.
6. When the melting phase starts and the current protection (2) switches on again, repeat
the procedure explained under 4 above.
7. The procedure for setting the melting can be used for preheating the crucible.
5.2.6 Melting
Close the upper lid. The device goes into “melting” mode. The red indicator light “HF” on the
front panel is on, indicating that the high-frequency generator has switched on. The green
indicator light “1” is on, too, indicating that the required pressure in the cooling system has been
achieved. When the red indicator light “4” is on, it indicates that the “timer” is switched on.
If you lift the upper lid during the melting phase, the high-frequency generator immediately
switches off and the device goes into stand-by mode. In case you leave the upper lid closed, the
device remains in the “melting” mode for 150 s. After that indicator light “4” goes out and the
device is guided to the starting position, which is also indicated by an acoustic signal. This
protects the device from excessive operation in the “melting” mode. When the upper lid is lifted
again, the device goes into stand-by mode again.
If during the melting of the metal the “current protection” (“2” in Fig. 2) indicator light lights up,
the high-frequency generator switches off automatically and the melting is interrupted. To
resume the melting process you have to decrease the melting power by turning the P2
potentiometer by one grade, open the lid and close it back again (“2” in Fig. 3).
In the event that the “current protection” (“2”) indicator light lights up again, repeat the
mentioned procedure.

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5.2.7 Monitor the melting of the metal through the viewing glass (“3” in Fig. 3) in the upper lid.
When the metal is molten, lower the handle (“1” in Fig. 3). This places the device into “casting”
mode. Press the “turning” key (“P3” in Fig. 2): the centrifugal arm starts turning and the casting
begins. The arm will turn as long as the “P3” key is pressed.
WARNING! The device has no brake system, thus the arm turns until it comes to a stop by
itself. For greater safety wait a while before opening (lifting) the lid. Keep in mind that any
instance of pressing the “turning” key (“P3”) causes the arm to turn if the inductor is in the
bottom position and the upper lid is closed.
5.2.8 Open the upper lid and remove the flask. Close the lid. Switch off the device by turning off
the main switch on the control panel.
5.3 Description of indicator lights on the front panel:
(“1”) – adequate pressure of the cooling water in the cooling system
(“2”) – current protection switched on
(“3”) – device in stand-by mode
(“4”) – timer (150 s) switched on
(“5”) – thermal protection switched on
(“6”) – upper lid open
(“7”) – upper lid closed
(“8”) – inductor in top position
(“9”) – inductor in bottom position
(“10”) – the interlock has been released and the inductor can be lifted

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FIG. 1: ARM OF THE CENTRIFUGAL CASTING MECHANISM PANEL
FIG. 2: CONTROL PANEL
FIG. 3: APPEARANCE OF THE DEVICE

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FIG. 1: ARM OF THE CENTRIFUGAL CASTING MECHANISM PANEL

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FIG. 2: CONTROL PANEL
P1
P2
P3
5
2
3
4
5
6,7
8
9
10
1
11

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FIG. 3: APPEARANCE OF THE DEVICE

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6 REGULATIONS FOR SAFE USE
6.1 The centrifuge and the high-frequency generator may only be switched on when the
upper lid is closed.
6.2 Whenever the upper lid is opened during the melting phase, the high-frequency heating
is interrupted.
6.3 Do not open the upper lid when pressing the “turning” key (“P3” in Fig. 2).
6.4 In case of absence or insufficient amount of water in the cooling system, the device
should not be set in the “melting” mode.
6.5 The inductor can only be placed in the top position for melting if the crucible is centred
in it correctly.
6.6 The centrifuge starts only when the inductor is in the bottom position and the “turning”
key (“P3” in Fig. 2) is pressed.
6.7 The lifting handle of the inductor can only be raised if the main switch (“POWER” in Fig.
2) on the front panel is on. During the operation of the centrifugal motor the lifting handle of
the inductor is blocked in the bottom position.
7 IMPORTANT PRACTICAL INFORMATION
7.1 After each casting remove any metal residue from the melting crucible.
7.2 Preheat the ceramic melting crucible to a minimum of 800°C (temperature of the flask).
7.3 The graphite inserts placed into the ceramic crucible are only intended for
melting precious metals.
7.4 This device is intended for the melting and casting of dental alloys only.

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8MAINTENANCE
WARNING!
8.1 Before opening the side lids pull the plug out of the socket.
8.2 Check the water level in the tank regularly. To do so, open the left side lid by means of a
special wrench.
8.3 Carefully remove all metal residue –make sure that no residue gets stuck in the coils or
their guides.
8.4 The coils of the high-frequency inductor should not be in direct physical contact.
8.5 The insulation plates of the inductor may only be cleaned with a dry cloth. Do not use
water or solvents.

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9 DECLARATION OF CONFORMITY
INTERDENT d.o.o.
Opekarniška cesta 26
SI-3000 Celje
Slovenia,
declare under our sole responsibility that the product:
Casting Unit - Model INTERCAST 60A
is in conformity with:
LVD 73/23/EEC Council directive of 19 February 1973 on the harmonization of the laws
of Member States relating to electrical equipment designed for use within
certain voltage limits.
EMC 89/336/EEC Council Directive 89/336/EEC of 3 May 1989 on the approximation of the
laws of the Member States relating to electromagnetic compatibility.
98/37/EC Directive of the European Parliament and of the Council of 22 June 1998 on
the approximation of the laws of the Member States relating to machinery.
EN 61010-1:2001 Safety requirements for electrical equipment for measurement, control and
laboratory use.
EN 61010-2-010-2003 Safety requirements for electrical equipment for measurement, control and
laboratory use. ) radio-frequency equipment –Radio disturbance
characteristics.
EN 61000-6-1:2002 Electromagnetic compatibility Part 6: Generic standards –Section 1:
Immunity for residential, commercial and light-industrial environments
EN 61000-6-3:2002 Electromagnetic compatibility. Part 6: Generic standards –Section 3:
Emission standard for residential, commercial and light-industrial
environments.
EN 55011+A1:2003 Electromagnetic compatibility.
EN 55011/A2:2003 Industrial, scientific and medical (ISM)
Celje, April 2009 Igor Grudnik
Service department manager

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10 WARRANTY
Device: Centrifugal high-frequency casting unit INTERCAST 60A
Serial number:
Installation date:
Installation and connection carried out by:
(Company, Name)
Our company, INTERDENT d.o.o., guarantees a perfect operation of the above stated device
for a period of 12 months from the date of its selling to the final customer. During this time
the company will remedy at its own expense any faults encountered during a normal use of
the said device.
Terms and conditions of warranty:
The installation and connection must be carried out by a qualified professional
authorised by the manufacturer.
The device must be operated strictly according to the enclosed instructions.
The warranty does not cover any damage incurred during transportation, resulting
from inappropriate maintenance or handling, or deriving from disturbances in the
power supply network, nor any mechanical damage.
The warranty is invalid in the event that non-original spare parts have been used and
that the device has been repaired, altered or modified by the customer or other
unqualified, non-officially appointed person with the purpose of remedying a defect
or malfunction.
In the event of defect or malfunction contact us by phone at (03) 42-56-206 or by e-
mail at [email protected].
Stamp, name and surname, INTERDENT
and signature of the authorised person Signature of the authorised person

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