REITEL INDURET COMPACT User manual

Operating Instructions
LABORGERÄTE IN STAINLESS STEEL
INDURET COMPACT
REITEL Feinwerktechnik GmbH
Senfdamm 20 | 49152 Bad Essen
Phone: [phone] | Fax: [phone]
www.reitel.com | [e-mail]

II
Dear Customer!
The INDURET COMPACT induction casting machine guarantees optimum and safe casting
results for all dental work, including model casting.
Any other use or use beyond this is deemed improper. For resulting damage the
user/operator of this device is solely responsible. Prior to installation of the device operating
instructions and especially the safety instructions must be read and followed by all personnel
who use this device. After having unpacked the device, please check carefully whether
transportation damages of any kind have occurred. If that is the case, the carrier or
manufacturer must be notified within 3 days. The company will not be responsible for any
damages found after that.
These operating instructions must be read and followed by all personnel who use this device.
To ensure quick access we recommend to keep it at a safe place near the device. In case of
loss it can be ordered at a nominal fee from the manufacturer. This document is protected by
the copyright law. Passing on or duplication of this document or extracts thereof, evaluation
and communication of its contents are not authorised. In case of loss it can be ordered at a
nominal fee from the manufacturer.

III
INDEX
TECHNICAL DESCRIPTION......................................................................................... 5
BASIC EQUIPMENT....................................................................................................... 5
SPECIAL ACCESSORIES................................................................................................ 5
OPERATING ELEMENTS................................................................................................ 6
TECHNICAL DATA......................................................................................................... 8
SAFETY NOTES........................................................................................................... 9
GENERAL SAFETY NOTES ............................................................................................ 9
SPECIFIC SAFETY INSTRUCTIONS ................................................................................10
INSTALLATION ...........................................................................................................11
INSTALLATION.............................................................................................................11
COMPRESSED AIR CONNECTION ..................................................................................12
PROTECTIVE GAS CONNECTION (OPTIONAL)..................................................................12
WATER CONNECTION..................................................................................................14
CONNECTION FOR POWER SUPPLY...............................................................................14
GENERAL NOTES.......................................................................................................15
ALLOYS......................................................................................................................15
CLEAN WORKING AREA FOR PRECISE CASTING..............................................................15
ARIGHT WAY..............................................................................................................16
CRUCIBLES AND STOP RODS........................................................................................18
THE CONTROL PANEL..................................................................................................19
PROGRAMMING THE MEMORY LOCATIONS.....................................................................19
CASTING PROCESS...................................................................................................20
THE CASTING PROCESS WITH TEMPERATURE CONTROL.................................................21
5.1.1 The casting process with temperature control without pre-melting............................................. 21
5.1.2 The casting process with temperature control with pre-melting .................................................. 22
THE CASTING PROCESS WITHOUT TEMPERATURE CONTROL...........................................23
5.2.1 The casting process without temperature control without pre-melting ....................................... 23
5.2.2 The casting process without temperature control with pre-melting............................................. 23
BRIDGING THE POWER REDUCTION ..............................................................................23
AFTER THE CASTING ...................................................................................................24
TROUBLESHOOTING .................................................................................................25
MAINTENANCE...........................................................................................................25

IV
WARRANTY.................................................................................................................26
RULES FOR DISPOSAL..............................................................................................29
SPARE PARTS LIST ...................................................................................................30
EC CONFORMITY DECLARATION.............................................................................31

5
Technical description
Basic Equipment
•INDRET COMPACT
•1 Ceramic crucible (non-precious alloy)
•1 Graphite crucible (EM)
•1 Graphite crucible holder
•1 Ceramic stop rod
•1 Graphite stop rod
•1 Thermocouple
•1 Hose package
•User video
Special Accessories
•Order-No.: 21601000 Pressure reducer Argon
•Order-No.: 23801000 Graphite crucible for precious alloy
•Order-No.: 23801200 Graphite crucible Plus for precious alloy
•Order-No.: 23802000 Graphite stop rod
•Order-No.: 23803000 Ceramic crucible for non-precious alloy
•Order-No.: 23804000 Ceramic stop rod S
•Order-No.: 23805000 Graphite crucible holder
•Order-No.: 23806000 Crucible holder
•Order-No.: 23807000 Water cooling unit
•Order-No.: 23809000 Maintenance unit
•Order-No.: 23811000 Starter package including order-no.:
21601000, 23801000, 23802000, 23803000, 23805000, 23809000,
23812000, 23815000, 23816000, 23818000, 23819000, 23823000
•Order-No.: 23812000 Longlife stop rod
•Order-No.: 23814000 Thermocouple
•Order-No.: 23815000 Centering and isolation rings
•Order-No.: 23816000 Milling tool for crucible outlet
•Order-No.: 23818000 Alloy chute
•Order-No.: 23828000 Dosage tube
•Order-No.: 23819000 Positioning pliers
•Order-No.: 23822000 PC interface

6
Operating Elements
1 Pressure gauge for pillar frame
2 Control lamp „performance reduction“
3 Switch “Manual Argon rinsing”
4 Sight glass
5 Inductor chamber
6 Clamping lever
7 Mould’s chamber
8 Lamp „Argon rinsing“
9 Power switch
10 Lamp step 1 draw vacuum
11 LED Casting machine “ready for operation”
12 Temperature control
13 Control lamp step 2 lift pestle (casting)
14 Control lamp step 3 Pressurisation (automatic)
15 Stew switch
16 LED “Heating on”
17 LED “Error”
18 Heating control
19 Device fuse 4 A
20 Device fuse 1 A
21 Power supply for water cooling unit
22 Type plate
23 Power outlet
24 Argon connection
25 Air connection
26 Water drain
27 Water outlet
28 Sound absorber
29 Air filter
30 Selector switch pressurization medium “Argon / air”
31 Display „Heating disturbance“
32 Reset für heating disturbance

7
Fig.: INDURET COMPACT
Fig.: Back view
31
3
4
5
15
6
7
2
8
13
11
10
12
14
9
18
17
16
30
32
19
21
22
23
24
25
26
27
28
29
20
1

8
Technical Data
Line voltage
230 V/50-60 Hz
Current consumption
3.600 W
Height/width/depth
390/310+40/650 mm
Weight
38 kg
Air pressure/Argon pressure
6 bar
Water pressure
min. 3-4 bar
Casting ring size
1–9 incl. model casting
Temperature
max. 1.600 °C
Sound level
≤70 dB(A)
Housing
stainless steel
Order-No.:
13800000
Made in Germany (Subject to modifications)

9
Safety Notes
General Safety Notes
•All equipment undergoes final inspection and testing before leaving our factory. However,
if equipment is damaged during shipping or through any other circumstances, it must not
be used in service. Please check the device regularly for damages. Damaged parts
should be replaced immediately.
•All power/air/water/gas sources should be rated for the demands of the device as listed in
the technical data sheets. Maximum ratings must not be exceeded. All VDE (Verein
Deutscher Elektro-Ingenieure) standards should be followed. Equipment should be
grounded according to standards.
•Adherence to valid regulations regarding necessary checks (e.g. according to Accident
Prevention & Insurance or electrical equipment) is exclusively taken over by the
buyer/user of this product.
•This device has been designated to be used only for its intended purpose. All other
applications must be prohibited for safety reasons as otherwise the manufacturer’s
warranty expires.
•The device may only be used by persons who have been instructed in the handling and
have been expressly commissioned with the operation.
•The device should be set-up in a clean, well-ventilated room, if necessary under a hood.
•Supporting surfaces should be straight, flat and adequately stable.
•Don’t place anything on top of the machine.
•To avoid injury, appropriate protection should be worn (e.g. gloves, safety glasses, safety
shoes, hearing protection etc.)
•If the machine is defective or working improperly it must be taken out of service. In case
of further use of the machine the owner will be held responsible for any consequential
damage.
•To prevent accidents from water, fire or explosion, all power/air/water/gas sources should
be turned off after working hours and during breaks, and secured against unauthorized
access.
•When carrying out maintenance works or repairs or when opening the device always turn
off the main power switch and unplug the whole unit.
•Repairs should be carried out only by the manufacturer or by qualified and certified
personnel appointed according to chapter 7 –warranty.
•In case of suspected ingress of liquid stop operation and contact Service.
•Check all hose joints for tightness, if necessary fasten clamps.

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Specific Safety Instructions
•Never store explosive, highly inflammable or burnable material in the working area.
•Only put the hot crucibles, pestles and moulds on a heat-resistant and fireproof support.
•Only use the device for melting metals and alloys in the crucibles intended for this
purpose.
•Do not melt materials that produce toxic gases.
•Only switch on the generator with inserted melted material.
•Do not reach into the inductor chamber when the heater is on.
•Use pliers when inserting and removing the casting rings or melting crucibles. There is a
risk of burns.
•Only open the casting chambers if there is no overpressure or underpressure.
•Handle gas cylinders carefully, do not heat them and protect them from falling over.
•Alloys with a longer melting time are not permitted. The rest period between a casting
and the start of a new heating process must be at least 6 minutes. During this time, no
hot crucible should be in the device. Casting ring chamber and inductor chamber must be
open during this time for cooling reasons.
•Small metal quantities below 15 g are inaccurate and difficult to melt due to lack of mass.
If it comes to mishandling, often cause errors in embedding or a wrong temperature
assessment of the molten metal.
•Precious metal (EM) is usually cast in the graphite crucible, if necessary in the ceramic
crucible with the graphite crucible holder.
•When melting thin and few precious metal platelets, make sure that they do not stand
upright, otherwise no coupling takes place and the metal does not melt. Therefore push
the plates together, place old cast cones on the new material or weld or score the plates
together.
Pay attention to the maximum percentage of old material and shred it enough! The parts
must lie on the bottom of the pot, otherwise there is no or only partial metal melting.
•The heating process may include max. 3 minutes. Alloys with a longer melting time are
not permitted.
Note:
The machine must not be used by persons with electronically controlled medical
aggregates such as pacemakers.

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Installation
The equipment delivered is ready for use. The sealed plug can be connected directly to the
mains supply 230 V/16 A. For installation please refer to chapter 2.
Installation
•In order to minimize the casting delay time, the INDURET COMPACT should be installed
in the immediate vicinity of the preheating furnace.
•Do not place the device in a dusty room, e.g. near a sandblaster.
•The INDURET COMPACT is a tabletop device. Pay attention to stable, non-wobbling,
plumbing table design.

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Compressed air connection
Connecting medium
Connection type device
Hose length
Laboratory installation
Compressed air
Quick coupling NG 7
2 m
14 mm Ø
quick coupling NG 7,
6 bar
The casting result depends on the compression set speed.
DES target pressure build-up speed from -0.8 bar to 3.0 bar in 1-2 sec.
That's why:
•Keep the distance to the compressor low.
•Flow opening of all connections and hoses at least 8 mm.
•Compressor pressure at least 6 bar (permissible pressure drop at the device
max 0.5 bar).
•at least 80 l boiler volume or free compressor capacity / compressed air supply with
50 l / min. ensure continuously.
•Do not bend supply hoses.
•Keep compressed air connections water, dirt and oil free
Protective gas connection (optional)
Connecting medium
Connection type device
Hose length
Laboratory installation
protective gas
Argon (min. 4.6)
Quick coupling NG 7
2 m
14 mm Ø
Bottle:
pressure reducer 5-6 bar
(not l/min)
Via a pressure reducer (included in the starter kit) the corresponding gas cylinder is
connected.

13
Fig.: argon connection
manometer
cylinder pressure
manometer
system pressure
shut-off valve
arrestor
pressure reducer
Pressure adjustment
screw

14
Water connection
Connecting medium
Connection type device
Hose length
Laboratory installation
water supply
3/4- Union screw
2 m
16 mm Ø
3/4- Union screw
water drain
Flow opening
6-8 mm, secure with
clamp
2 m
12 mm Ø
free expiring
Connect the water inlet with the supplied hose to the supply line.
The water inlet pressure must be at least 3 bar. The water drain hose leads into a drain basin
or the household drain. The drain must be permanently lower than the device to prevent
backflow.
Alternatively, the water circulation cooling can be installed, which you can get as an
accessory from REITEL.
Connection for power supply
Connecting medium
Connection type device
Hose length
Laboratory installation
Electrical
connection
preinstalled
2,5 m
230 V/16 A
50 Hz socket
Protection: fuse 16 A slow-blow or circuit breaker K16 A or C16 A, minimum voltage 215 V /
max. 240 V.

15
General Notes
The precondition for obtaining excellent casting results is correct sprueing, embedding and
recognition of the correct casting moment.
The REITEL INDURET COMPACT produces precise casting with a homogeneous structure,
with nearly all kind of alloys available in the market.
We don’t have any reliable information regarding their suitability or we don’t recommend
these alloys.
In case of casting problems, we’ll be glad to perform testing for you against payment of a fee.
Alloys
1. Nickeliferous alloys containing more than 67 % nickel (Ni).
These alloys were developed for flame casting and therefore, are only partially suitable
for vacuum pressure casting.
2. Ferric alloys containing more than 30% of iron (Fe) 30 %.
It’s difficult to determine the correct casting moment due to the fast burning iron parts.
3. Aluminum-containing (Al) alloys with copper content (Cu).
The already melting at low temperatures aluminum creates a strong formation of smoke
and slag.
4. Beryllium-containing (Be) alloys
These alloys develop toxic fumes when melted! When using these types of alloys, the
company REITEL assumes no liability for functional and health damage of any kind.
Clean working area for precise casting
1. Clean the inductor (5) –and mould’s chamber (7) and if necessary
use a vacuum cleaner to suck them out.
2. Arrange mould seal and pliers.
3. Check the ceramic crusible for a round outflow hole with a diameter of
8 mm.
4. 4. Clean ceramic crucible or use milling tool to clean crucible outlet.

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A right way
1. Correct choice of casting channels and positioning in the casting ring in crown and pontic
technique.
A homogeneous casting depends very much on
the correct dimensioning of the casting channels
and the supply channels.
For crowns and inlays, the sprues should be at
least 3 mm in diameter. The lost head must be
exactly in the heat center. The distance to the
muffle wall should be 5 mm and to the muffle top
7 mm.
In a pontic construction, the casting channels must
always have the same thickness as the crossbeam,
ie the supply reservoir. If a crossbeam is used, it
must have a diameter of 5 mm. For pontic
constructions, air ducts (0.6 mm - 0.8 mm) should
be installed on compact model parts.
The prosthetic object must be embedded about 5
mm from the edge of the casting ring. The melt
reservoir must start in the middle of the steel ring
from the height dimension. Helpful here is the
crosshair control. When viewed from above, the
object must be eccentric.
The wall thickness of the crowns and bridges must be at least 0.2 mm for noble metal
casting (ideally 0.3 mm). If this value is undershot, the surface tension is greater than the
specific gravity of the alloy and the alloy can not flow out completely into the object. For
Cr-Co-Mo crowns and pontics, the wall thickness should be 0.4 mm - 0.5 mm.

17
2. Correct choice of sprues and positioning of the sprue in model casting constructions.
As casting channels wax wires of 4.0mm - 4.5 mm
diameter are used. An additional use of pressure
compensation channels means that basically two
casting channels are sufficient for all model casting
models. The casting channels must be arranged so that
they lead from the center of the casting mold to wax
modeling.
Important for all incitements in vacuum pressure casting
are soft, radiused transitions in the main flow direction of
the alloy. Sharp redirections should be avoided at all
costs. The sprues must constantly increase from the
prosthetic modeling to the funnel. The hopper floor is 3 –
4 mm above the highest model point.
If a model can not be fitted with 2 sprues to feed all
parts of the volume (clip model casting, palatal plate),
additional reservoirs can be fitted. Here, the diameter of
a reservoir of 3 mm is sufficient.

18
Crucibles and stop rods
Melting precious alloys
23802000 Graphite crucible holder: In conjunction with the thermocouple, it is possible with
this crucible holder to measure the temperature of the precious metal melt.
23801000 Graphit crucible normal: Graphite-containing crucible for precious metal alloys.
23801200 Graphite crucible Plus: Graphite-containing crucible for precious metal alloys
with ceramic insert at the outflow hole.
23800000 Sigradur stop rod: Glassy carbon crucible mainly used for palladium-based
alloys in combination with the 23812000 Longlife stop rod.
Gold alloys can be combined with the 23802000 Graphite stop rod.
Melting non-precious metal alloys (chrome-cobalt-molybdenum)
23803000 Ceramic crucible for non-precious alloy: The crucible consists of a special
ceramic mass and has a long service life due to its high heat exchange resistance.
23812000 Stop rod Longlife: In conjunction with the thermocouple, this shutter stop rod
makes it possible to measure the temperature of the melt in the ceramic crucible for non-
precious metal.
In order for the induction field to couple optimally, a minimum of 15 g of alloy must rest on the
bottom of the crucible.
The argon optimizes the temperature measurement and the casting result (oxide reduction,
homogeneous melting).
23805000 Graphite crucible holder
23801000 Graphit crucible normal
23801200 Graphite crucible Plus
23800000 Sigradur crucible
23802000 Graphite stop rod
23803000 Ceramic crucible for non-precious alloy
23804000 Ceramic stop rod S (without temperature control)
23812000 Stop rod Longlife (with temperature control)

19
The control panel
1 P button: Confirmation of input and change of temperature
2 Down button: Reduce values
3 Up button: increase values
4 U button: (This button has no function if your controller has only one memory space.)
Option: If the button is pressed for 2 seconds, further memory locations can be
selected.
11 PV display: Actual value display
12 SV display: setpoint display = set value (pouring temperature)
Programming the memory locations
1. Hold Ufor about 2 seconds until the desired selection appears.
2. Select the casting temperature. Press P, change the value with the arrow keys .
3. Press Pto save your changed values.
4. Call up the individual program memory locations by pressing Ufor 2 seconds each until
the setpoint (°C) is displayed.

20
Casting Process
1. Prior to starting the casting process, heat up the casting mould in the preheating furnace
Due to the delay time during melting, heat up the casting mould to the maximum
admissible temperature. Please observe the manufacturer’s instructions. Wrong
temperature or too short preheating time will lead to bad casting results.
2. Turn on the watercooling. This should be min. have a pressure of 3-4 bar.
3. Check the compressed air. Set the compressor pressure reducer to 6 bar.
(Vacuum only possible with compressed air connection).
4. Turn on the argon bottle. Set the gauge pressure gauge to 6 bar outlet pressure.
5. Turn on the main switch. The switch lights up green. The LED (green) flashes for approx.
10 seconds. When the LED lights up permanently, the device is ready for operation.
6. Select the storage location or enter the pouring temperature. Press Ufor 2 seconds until
the desired program appears. Press P, change the value with the arrow keys.
Select a.) air or b.) argon with the selector switch (30). Depending on the degree of
discharge argon or compressed air. We recommend argon for better surface finish on
non-precious metal.
7. Open both chambers. Swing the inductor chamber (5) and the casting ring chamber (7) to
the left.
8. Insert a crucible into the inductor chamber (5) as described in 4.4.
9. Clamp the stop rod in the lifting clamp. Check the correct position of the stop rod tip in the
crucible hole, if necessary, press the stop rod slightly. For this purpose, the casting ring
chamber (7) must be opened. There must be no visible light gap between the bottom hole
of the crucible and the stop rod through the lamp in the bottom of the device.
Fig.: Inductor chamber
Note:
The temperature measuring element is designed for a maximum temperature of 1,600
°C! This value must not be exceeded, otherwise the destruction of the temperature
measuring element threatens.
The stop rods and the crucibles are fragile. Therefore, they should be handled carefully,
e.g. when hot, work with needle-nose pliers and use the crucible holder for storage.
The breakage sensitivity of the stop rods is increased by moisture, oil, etc., so they are to
be stored dry and to be taken out of the packaging just before use.
Holding clip