MIHM-VOGT HTS-2/METAL GLOW 120 User manual

Operating manual (translated from
the original German operating manual)
Annealing oven HTS-2/METAL GLOW 120
Version 1.1 – 08/2021
Friedrich-List-Straße 8
D-76297 Stutensee-Blankenloch
Tel.: [phone]
www.mihm-vogt.de
EN

Page 2 Annealing oven HTS-2/Metal GLOW 120 Version 1.1 – 08/2021
Contents
Contents
General information ..................................................................4
Limitation of liability .....................................................................4
Responsibilities of the operator .......................................................................4
Documentation ............................................................................5
Content and structure......................................................................................5
Labelling scheme for integrated text boxes and references............................5
Formatting and symbols ..............................................................6
Service address...........................................................................6
Safety..........................................................................................7
Requirements for personnel ........................................................7
Transport, packaging and storage...........................................9
Transport ....................................................................................9
Packaging....................................................................................10
Storage........................................................................................10
Technical description................................................................11
Function.......................................................................................11
Conformity ...................................................................................12
Certication..................................................................................13
CE mark...........................................................................................................13
RoHS conformity .............................................................................................13
Intended use................................................................................14
Potential misuse ..........................................................................14
Annealing and sintering with argon .............................................15
Technical data............................................................................16
Installation..................................................................................17
Setup ...........................................................................................17
Setup conditions..............................................................................................17
Electrical connection....................................................................18
Local installation..............................................................................................18
Rating plate .................................................................................19
Connecting the argon supply.......................................................19
Operation....................................................................................21
Operating elements and displays ................................................21
Switches and button functions.....................................................22
Standby screen............................................................................23
Switching on the annealing oven.................................................23
Setting the argon ow rate...........................................................24
Sinter bell system Ø 120 mm .......................................................................... 24
Initial commissioning................................................................25
Using the door insulation.............................................................25
Door insulation assembled ..............................................................................26
Annealing and sintering aids .......................................................27
Annealing procedure ...................................................................27
Selecting and loading a heating program........................................................27
Starting/stopping a heating program ............................................................... 28
Programming heating levels............................................................................29
Programming levels S2 to S4..........................................................................30
Saving the heating program ............................................................................ 30
Saving the heating program with a name........................................................31

Contents
Version 1.1 – 08/2021 Annealing oven HTS-2/Metal GLOW 120 Page 3
Renaming the heating program.......................................................................31
Starting a heating program automatically........................................................32
Annealing without protective gas.................................................33
Loading the annealing oven ............................................................................ 33
Removing the product from the annealing oven..............................................33
Annealing with protective gas......................................................34
Programming argon control.............................................................................34
Loading the annealing oven ........................................................35
Removing the product from the annealing oven..........................36
Sintering with protective gas........................................................37
Programming argon control.............................................................................37
Basic settings ............................................................................38
Parameter settings ......................................................................38
Switching o󰀨 the annealing oven.................................................40
RS-232 interface ........................................................................41
Care and maintenance ..............................................................49
Checking the argon system.........................................................49
Faults and error messages.......................................................50
Safety ..........................................................................................50
Faults...........................................................................................51
Error messages in the electronics ...............................................52
Decommissioning......................................................................53
Disposal......................................................................................53
Safety ..........................................................................................53
Disposal.......................................................................................53

Page 4 Annealing oven HTS-2/Metal GLOW 120 Version 1.1 – 08/2021
General information
General information
Limitation of liability
The contents of this operating manual were created taking the applicable
laws and standards into account.
The unit was developed using state-of-the-art technology.
Note
The manufacturer assumes no liability for damage resulting from:
hDisregard/non-observance of the operating manual
hIntentional misuse
hUse other than as intended
hOperation by untrained personnel
hOperation by non-professionals (carrying out maintenance work, etc.)
hTechnical modications to the unit that were not agreed with the
manufacturer
hUse of replacement parts that were not approved by the manufacturer
Responsibilities of the operator
The unit is used for commercial purposes. The operator of the unit is
therefore subject to the statutory obligations relating to occupational safety.
In addition to the safety instructions in this operating manual, the regulations
on safety, accident prevention and environmental protection that apply to
the unit's area of application must be complied with.
In particular, the following apply:
yThe operator must be familiar with the applicable regulations on
occupational safety.
yThe operator must ensure that all employees who use the unit have
read and understood this operating manual.
yThe operator must also train personnel at regular intervals and inform
them of the dangers that can arise when using the unit.
yThe operator must provide personnel with the necessary protective
equipment.
yThe operator must have all safety devices checked regularly for
operability and completeness.

General information
Version 1.1 – 08/2021 Annealing oven HTS-2/Metal GLOW 120 Page 5
Documentation
Content and structure
This operating manual is an essential part of this unit. It contains instructions
and information on how to use the unit safely and must be available to all
users throughout the unit's service life. This operating manual is intended for
use by trained operating personnel.
Labelling scheme for integrated text boxes and references
The following safety notices are used in this manual:
Danger
Indicates an imminent danger that may cause serious physical
injury or death.
Warning
Indicates a potentially dangerous situation that may cause serious
physical injury or death.
Caution
Indicates a potentially dangerous situation that may cause minor
physical injury.
Note
Indicates a potentially harmful situation in which the product or an
object in its vicinity may be damaged.
Note
Information or tips for easier operation.

Page 6 Annealing oven HTS-2/Metal GLOW 120 Version 1.1 – 08/2021
General information
Formatting and symbols
$indicates a general safety instruction
;indicates that a requirement must be met
1. indicates a step to be carried out
Âindicates the outcome of carrying out a step
yindicates a list
S1
indicates a button
Service address
Friedrich-List-Straße 8
76297 Stutensee-Blankenloch, Germany
Tel.: [phone]
www.mihm-vogt.de

Safety
Version 1.1 – 08/2021 Annealing oven HTS-2/Metal GLOW 120 Page 7
Safety
The annealing oven is a high-temperature oven for commercial use in dental
laboratories and may be used only for stress-free annealing of metallic
dental restorations.
Requirements for personnel
Trained and qualied personnel who know how to use the unit and
whose specialist training, skills, experience and knowledge of the
relevant regulations enables them to carry out the tasks assigned to them
independently and recognise and avoid potential hazards.
Note
Personal protective equipment must be worn when working on the
annealing oven to avoid accidents and harm to health.
Danger
Electricity!
Risk of death from electric shock.
hDo not touch live cables and components with wet hands.
hObserve the accident-prevention regulations when working with
electric current.
hBefore carrying out any installation, maintenance, cleaning or repair
work, disconnect the power supply of the annealing oven and secure
it against being switched back on.
Danger
Risk of ignition!
Use of inammable and explosive materials near the oven.
hDo not operate the annealing oven near highly ammable sources.
hDo not install the annealing oven on highly ammable supporting
surfaces.

Page 8 Annealing oven HTS-2/Metal GLOW 120 Version 1.1 – 08/2021
Safety
Warning
Risk of burns from hot surfaces!
The surfaces of the annealing oven become hot during operation
and may cause burns if touched.
hDo not touch the housing or the oven door during operation.
hDo not reach into the heating chamber. It may still retain a high level of
residual heat from the previous heating process.
hLet the annealing oven cool down before carrying out maintenance,
cleaning and repair work.
hWear heat-resistant safety gloves if work must be done on hot
components.
hUse a suitable and su󰀩ciently long pair of tongs to place and remove
annealing materials.
Caution
Incorrect operation!
No liability is assumed for damage that may be caused by misuse,
incorrect operation, incorrect connections or improper maintenance/repair
work carried out by untrained personnel. All warranty services are also
excluded in such cases.
The unit must not be used if it or the mains cable becomes damaged
and no longer functions correctly. In this case, contact the manufacturer
immediately.
For your own safety and to increase the service life of your unit, use only
original replacement parts.
To ensure safe operation of the annealing oven, regional regulations
(e.g. accident-prevention regulations) apply in addition to the instructions
in this operating manual. The former must be made available by the
operator of the unit. The safety notices on the annealing oven must be
kept in a legible condition.
Note
This operating manual must be read and understood by each user before
working on and with the unit.
The operating manual must be kept for the specied service life of the
annealing oven.

Transport, packaging and storage
Version 1.1 – 08/2021 Annealing oven HTS-2/Metal GLOW 120 Page 9
Transport, packaging and storage
Transport
Warning
Injury from the annealing oven falling down!
Slipping/falling when lifting and carrying the annealing oven can lead to
serious injuries.
hCarry/hold the annealing oven only at the lower edge of the housing
(base).
hAlways have at least two persons carry the annealing oven
(max. 30 kg/person).
Caution
Risk of injury due to oven weight!
Physical strain/back injuries due to the high inherent weight.
hHave at least two people carry/move the annealing oven together.
Note
Transport damage!
To prevent injury to personnel and material damage:
hTransport the unit in an upright position only.
hDo not stack units on top of each other.
hDo not place any other objects on the unit.
hTransport must be as free of shaking and vibrations as possible to
prevent the unit from being damaged.
hMake sure that the unit is secured against slipping and falling during
transport.
hIf necessary, gloves (against slipping and cut injuries) as well as safety
shoes (against foot injury upon falling) must be worn when carrying
the unit.
hThe goods must be inspected for damage and loss immediately upon
receipt. Defects must be documented by the freight carrier on the
letter of consignment in order to lodge claims. Mihm-Vogt GmbH &
Co.KG assumes no liability for any damage and loss that is only found
subsequently.

Page 10 Annealing oven HTS-2/Metal GLOW 120 Version 1.1 – 08/2021
Transport, packaging and storage
Packaging
Note
The packaging protects the annealing oven against transport damage,
corrosion and other forms of damage. Remove it only shortly before initial
commissioning, and store it in dry conditions for later reuse.
Storage
Note
Temperature damage!
To prevent temperature damage:
hStore the unit only at temperatures between +5 and +40 °C.
hAlways store the unit in dry and dust-free conditions.
hAvoid exposure to direct sunlight.
hAvoid mechanical vibrations.

Technical description
Version 1.1 – 08/2021 Annealing oven HTS-2/Metal GLOW 120 Page 11
Technical description
Function
Annealing with and without protective gas
The annealing oven can be used to process products manufactured using
selective laser melting (SLM) techniques. The product is annealed stress-
free in an annealing bell using inert gas.
Releasing and annealing
The annealing oven can be used to process products manufactured
according to the binder jetting process as well as for chrome-cobalt that can
be sintered. The product is rst released in a bell jar using inert gas and
then annealed.
After entering the heating parameters and pressing the Start button the
electrically-powered oven door closes and the heat-up process starts. Once
the heating program has ended and the annealing oven has cooled down,
the oven door opens and the nished product can be removed.
Heating chamber
The product is annealed in the heating chamber. This consists of two
di󰀨erent ceramic insulation layers and is operated using four heating
elements connected in series. The outer insulating layer is designed for
temperatures up to 1200 °C, the inner layer for temperatures up to 1700 °C.
Oven door
The oven door consists of a two-part ceramic door panel. A safety switch
disconnects the heating current as soon as the oven door is opened. A slip
clutch used in the drive mechanism prevents excessive contact pressure
between the oven door and heating chamber.
Oven housing
The oven housing consists of steel plate coated with plastic on both the
inside and the outside.
Program controller
The program controller has a nishing-time setting that can be used to
specify a day and time for the program to nish. The switch-on time is
calculated automatically so that the heating process is stopped at the
required time, and the annealed item can be removed.
Operating parameters and heating programs are stored in a non-volatile
memory and are retained even if the power supply fails. The set target
temperature is maintained within an accuracy of ± 1°C.
A temperature sensor integrated into the heating chamber measures the
temperature of the chamber close to the product.
A thermocouple fail-safe prevents the annealing ovens from overheating if
the temperature sensor becomes defective.

Page 12 Annealing oven HTS-2/Metal GLOW 120 Version 1.1 – 08/2021
Technical description
Conformity
EG-Konformitätserklärung nach Maschinenrichtlinie 2006/42/EG Anhang II 1.A
Der Hersteller / Inverkehrbringer
MIHM-VOGT GmbH & Co. KG
Friedrich-List-Str. 8
76297 Stutensee
Tel.: [phone]
Fax: [phone]
Email: [e-mail]
erklärt hiermit, dass folgendes Produkt
Produktbezeichnung:
Fabrikat:
Glühofen
HTS-2/METAL GLOW-120
HTS-2/METAL GLOW-120 PLUS
Beschreibung:
Der Glühofen ist ein Hochtemperaturofen für den gewerblichen Einsatz in Dentallaboren und darf nur
zum spannungsfreien Glühen und zum Sintern von metallischen Dentalrestaurationen verwendet werden.
allen einschlägigen Bestimmungen der oben genannten Richtlinie sowie den weiteren angewandten
Richtlinien (nachfolgend) - einschließlich deren zum Zeitpunkt der Erklärung geltenden Änderungen -
entspricht.
Folgende weitere EU-Richtlinien wurden angewandt:
EMV 2014/30/EU
RoHS 2011/65/EU
Die Schutzziele der Niederspannungsrichtlinie 2014/35/EU wurden eingehalten.
Folgende harmonisierte Normen wurden angewandt:
EN 61010-1:2010 Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und
Laborgeräte - Teil 1: Allgemeine Anforderungen (IEC 61010-1:2010)
EN 61010-2-010:2014 Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und
Laborgeräte - Teil 2-010: Besondere Anforderungen an Laborgeräte für das
Erhitzen von Stoffen (IEC 61010-2-010:2014)
EN 61326-1:2013 Elektrische Mess-, Steuer-, Regel- und Laborgeräte - EMV-Anforderungen -
Teil 1: Allgemeine Anforderungen (IEC 61326-1:2012)
EN ISO 12100:2010 Sicherheit von Maschinen - Allgemeine Gestaltungsleitsätze -
Risikobeurteilung und Risikominderung (ISO 12100:2010)
Folgende nationale oder internationale Normen (oder Teile/Klauseln daraus) und Spezifikationen wurden
angewandt: -
Name und Anschrift der Person, die bevollmächtigt ist, die technischen Unterlagen zusammenzustellen:
Gillen, Tobias
Ort: Stutensee / Datum: 18.05.2021
_______________________________
(Unterschrift) Dietmar Gräbe

Technical description
Version 1.1 – 08/2021 Annealing oven HTS-2/Metal GLOW 120 Page 13

CE mark
This product bears the CE mark in line with the provisions of Directive
2006/42/EC (Machinery Directive).

CE mark with connected products!
Products that are connected to this unit must also bear the CE mark.
These products must be test in accordance with the respective standards.
We declare conformity for the annealing ovens HTS-2/METAL GLOW-120
and HTS-2/METAL GLOW-120 PLUS based on the following standards:
ySafety: EN 61010-1:2010 and EN 61010-2-010:2014
yEMC: EN 61326-1:2013
yRisk assessment and risk reduction EN ISO 12100:2010
RoHS Conformity
This symbol indicates that this product contains no poisonous or
dangerous substances and can be recycled after disposal, and should
not be thoughtlessly discarded.

Page 14 Annealing oven HTS-2/Metal GLOW 120 Version 1.1 – 08/2021
Technical description
Intended use
The annealing oven is a high-temperature oven for commercial use in dental
laboratories and may be used only for stress-free annealing and sintering of
metallic dental restorations.

The protection of persons can no longer be ensured and no liability can
be assumed for damage caused by misuse, incorrect operation, incorrect
connections or improper maintenance/repair work carried out by untrained
personnel. All warranty services are also excluded in such cases.
The use of spare and wearing parts that have not been procured from the
manufacturer will render the approval and warranty of the annealing oven
null and void.
Potential misuse
yOperation by untrained and insu󰀩ciently qualied personnel.
yUse of products that were not approved by the manufacturer.
yUse of replacement parts that were not approved by the
manufacturer.
yAny use not in accordance with the declaration of conformity.
yTechnical modications to and conversions of the unit that were not
approved by the manufacturer.

Only aids/accessories/wearing parts as well as spare parts approved by
Mihm-Vogt may be used.
You can nd an overview of the approved media and equipment on the
supplementary sheet in your unit packaging.

Technical description
Version 1.1 – 08/2021 Annealing oven HTS-2/Metal GLOW 120 Page 15
Annealing and sintering with argon
The annealing and sintering of metallic dental restorations is possible only
in an oxygen-reduced atmosphere. This is attained by using argon. Argon
is an inert gas in a compressed gas bottle. Always use argon bottles with a
pressure gauge as well as a pressure reducer. The purity of the argon must
be at least 4.6= 99.996 % vol.

The lling level of the compressed gas can be determined at the pressure
gauge. A new argon compressed gas bottle is lled to 200 bar.

A 50 litre compressed gas bottle of argon with a lling pressure of 200 bar
contains approx. 10,000 litres of argon.
At a ow rate of 1.2 l/min (bell system 100 mm), the consumption per
process is approx. 325 litres.
With a 50 litre compressed gas bottle, approx. 30 NEM processes are
possible.
At a owrate of 1.4 l/min (bell system 120 mm), the consumption per
process is approx. 380 litres.
With a 50 litre compressed gas bottle, approx. 26 NEM processes are
possible.

Page 16 Annealing oven HTS-2/Metal GLOW 120 Version 1.1 – 08/2021
Technical data
Technical data
General information
Dimensions (W x D x H) 390 x 500 x 800 mm
Combustion chamber volume Annealing bell Ø 120 mm
Max. temperature 1400 °C
Weight 63 kg
Minimum clearance around the
annealing oven
50 mm
Connected electrical load
Voltage supply 200–240 V (± 10% deviation)
Frequency 50/60 Hz
Max. power consumption 3000 W
Protection
Unit end
Customer end
16 AT
Connection to a separate electrical circuit with a 16-A circuit
breaker, type K or type Z (other types of circuit breaker
depending on the country of use)
Protection class IP 20 (protection against the ingress of foreign bodies, but not
against the ingress of water)
Operating conditions
Installation area Indoors only (in dry rooms)
Temperature range +5 to +40 °C
Relative air humidity Up to 31 °C: 80 %
Maximum air humidity Up to 40 °C: 50% no condensation
Height Max. 2000 m
Pollution degree 2

Installation
Version 1.1 – 08/2021 Annealing oven HTS-2/Metal GLOW 120 Page 17
Installation
Setup
The annealing oven is designed as a table-top unit. A level surface of at
least 50 cm x 60 cm that supports a load of up to 80 kg is recommended to
ensure stability.
Setup conditions
►Always set up the annealing oven in dry rooms that are as dust-free
as possible, and make sure that liquids cannot penetrate the unit.
► Highly ammable and combustible gases and liquids must not be
stored in the installation rooms.
► Do not place any combustible and ammable objects near the
annealing oven.
► Keep a distance of 50 mm around the annealing oven for su󰀩cient
cooling.
Caution
Risk of ignition!
The oor covering may ignite due to a hot product dish shattering.
hMake sure that the oor covering is non-combustible.
Caution
Tipping loads!
Insu󰀩cient load-bearing capacity of the installation surface.
When setting up the annealing oven, make sure that the supporting
surface has su󰀩cient load-bearing capacity.
Caution
Risk of injury due to oven weight!
Physical strain/back injuries due to the high inherent weight.
hHave at least two persons carry/move the annealing oven together
(max. 30 kg load bearing capacity/person).
Caution
Risk of overheating!
Overheating due to blocked air inlets.
hMake sure that the air vents remain clear on all sides.

Page 18 Annealing oven HTS-2/Metal GLOW 120 Version 1.1 – 08/2021
Installation
1. Align the supporting surface horizontally.
$Lift and carry the annealing oven only at the unit base.
2. Place the annealing oven on the supporting surface.
$Make sure the surface is non-slip.
Electrical connection
Local installation
Warning
Release of pollutants!
hSuitable respiratory protection must be worn when handling insulating
material.
hIf necessary, an extraction system must be installed.
;The annealing oven requires its own electrical circuit.
;The building's electrical circuit must have a type-K or type-Z circuit
breaker with a rated current of at least 16 A (other types of circuit
breaker depending on the country of use).
;An additional residual-current circuit breaker (designed for 30 mA
tripping current) must be installed.
;To ensure electrically safe operation, the annealing oven requires a
protective earth conductor to be connected to the power socket.
;When selecting the installation location, ensure that the
accompanying mains cable is 2.0 m long. Extending the cable is not
permitted. The supply voltage must be within the rated voltage range
of 200–240 V (see “Technical data” on page 16).
Danger
Electricity!
Risk of death from electric shock.
hDo not touch live cables and components with wet hands.
hObserve the accident-prevention regulations when working with
electric current.
hOnly connect the unit to a voltage supply that matches the
specications on the rating plate.
4

Installation
Version 1.1 – 08/2021 Annealing oven HTS-2/Metal GLOW 120 Page 19
Rating plate
10
1
8
234
9
5
11
76
1 Machine type/designation 7 QR code
2 Operating voltage 8 Serial number
3 Mains frequency 9 Year of manufacture
4 Power 10 Manufacturer's details
5 CE mark 11 RoHS mark
6 Reference number Mihm-Vogt
Connecting the argon supply
Danger
Danger due to escaping gas!
Potential risk of explosion or re as well as su󰀨ocation.
hDuring all work on the HTS-2/Metal GLOW 120, the argon and voltage
supply must be shut o󰀨, and the gas bottle must be closed.
hWhen working with argon, observe the national safety regulations
TRGS526 (Chapter 5.2.11 “Compressed gas bottles and ttings”).

Page 20 Annealing oven HTS-2/Metal GLOW 120 Version 1.1 – 08/2021
Installation
1. Close the connecting hose (included in the delivery) at the annealing
oven (A) and the argon supply (gas bottle).
2. Set the outlet pressure of the gas bottle to 7 bar (optimal pressure).
Maximum pressure: 10 bar
Note
If the outlet pressure of the gas bottle is higher or lower than 6–8 bar,
too much/too little argon will enter the annealing dish and the annealing
process will fail!
3. Check the gas lines and connected couplings for leaks and a secure t.
ÂIn the event of a malfunction, the volume of an argon bottle is
su󰀩cient to ood the entire room.
A ventilation in the oor area is recommended (argon is heavier than
air and settles on the oor).
4. Protect the ducts and shafts against penetration by gas.