Bego LaserStar T Plus User manual

Gerätedokumentation
Miteinander zum Erfolg

LaserStar T Plus
DOC 86076-en/03
English
355.00032
en

86076 DB-en/03355.00032

Translation of the original instructions
LASERSTAR T PLUS
English
355.00032
en

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List of contents
General information...........................................3
Safety information .............................................6
System description..........................................11
Installation .......................................................24
Operation ........................................................31
Dental instructions...........................................42
Status and error messages/
Fault clearance................................................53
Service and maintenance................................56
Marking ...........................................................66
Disposal ......................................................... 68
Index ...............................................................69
EU conformity declaration........................ Annex
This unit documentation is part of the
unit and must be enclosed when selling
or passing on the unit.
• The unit has been designed solely for use in
dental laboratories and comparable establish-
ments for research, commercial and training
purposes. The unit must only be operated by
dental professionals, or they must provide
supervision if trainees or other persons operate
unit.
• The operating instructions must be read and
understood before the device is used. This par-
ticularly applies to the Safety information. The
warranty is void in cases of damage which is
caused by nonobservance of the operating ins-
tructions. We will also not accept liability for any
resulting consequential damages.
• Symbols used
This symbol indicates very important
information. Failure to comply with it may
result in personal injury.

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General information
Importance of the operating instructions
These operating instructions cover all the infor-
mation that is necessary according to the relevant
regulations for the safe operation of the device
described herein.
The operating instructions are a part of the
LaserStar T Plus. These operating instructions
should therefore
• always be kept at hand near the device until the
LaserStar T Plus is disposed of,
• and should be passed on with the LaserStar T
Plus when it is purchased, sold, or lent.
Contact the manufacturer if you do not understand
something in the operating instructions.
We welcome any suggestions or criticism. Please
feel free to notify us. Your effort will help us make the
operating instructions more user-friendly and
respond more effectively to your wishes and needs.
Target group
This document is directed toward everyone who
works with this device or performs service tasks that
are described in this document.
Contact information
BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KG
Wilhelm-Herbst-Str. 1
28359 Bremen
Phone: [phone]
Service-Hotline Phone: [phone]
www.bego.com
Copyright by BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KG
This user guide is protected by copyright.
All rights reserved.
No part of this document may be reproduced without the express written permission of BEGO Bremer
Goldschlägerei Wilh. Herbst GmbH & Co. KG

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Conventions
These operating instructions contain references to
residual hazards, important user tips and handling
instructions that are identified with the following
symbols and words.
DANGER!
This reference identifies hazards that
can cause serious bodily injury or
death if the relevant hazard instruc-
tions are not followed or not followed
properly.
WARNING!
This reference identifies hazards that
can cause bodily injury or property
damage if the relevant hazard
instructions are not followed or not
followed properly
CAUTION!
This reference identifies only those
hazards that are potential
damaging to property and the
environment.
NOTE
This symbol identifies user tips and particularly
useful information. It helps you optimally exploit
all the functions of your machine.
1. Sequential actions are described in sequentially
numbered paragraphs.
In most cases, the operator's actions generate
some kind of a reaction from the system. These
reactions are identified with the symbol .
→Cross-references are identified with the
symbol →.
CAPITALS If cross-references refer to other chapters or
sections the header text is written with capital
letters.
(A) (B) (C) Capital letters in parentheses identify the position of
the individual elements in the associated figure.

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Warranty and liability
Our general terms and conditions of sale and
delivery apply. These are made available to the
customer on completion of the contract, at the latest.
Warranty and liability claims in the event of physical
injury or damage to property are invalid if they are
caused by one or more of the following:
• Improper use of the device;
• Improper installation, putting into operation,
operating and maintenance of the device;
• Operating the device with safety and protective
facilities that are defective, improperly installed
or inoperative;
• Failure to heed the information in this manual
concerning the transport, storage, installation,
putting into operation, operation and service
and maintenance of this device;
• Unauthorized structural modifications to this
device;
• Inadequate monitoring/checking of parts of the
device that are subject to wear;
• Improperly performed repairs;
• Catastrophes caused by alien elements or
force majeure.
Exclusion of liability in case of modifications:
If a modification by the user affects any aspect of the
performance data or intended functioning, as
described in the relevant standards, of a previously
classified laser device, the person or organization
that undertook the modification is responsible for
obtaining a new classification and new labeling for
the device. This person or organization then
assumes the status of "manufacturer".

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Safety information
This section contains generally applicable safety
instructions. The machine can only be operated
safely when these safety instructions are under-
stood and observed.
Additional special safety instructions are mentioned
in the description of the corresponding step.
Moreover, all regulations for accident prevention
valid for the current place of installation must be
complied with, especially the BGV B2 "Laser
Radiation" or the equivalent national or international
regulations (e.g. EC Directive 60825 or IEC Publi-
cation 825).
The LaserStar T Plus welding laser is a
Class 4 laser device.
The generated laser beam is invisible to the human
eye since it is at a wavelength of 1064 nm in the
near infrared range.
The high output of the laser beam can cause serious
eye damage or burn the skin when working with an
unshielded laser. Leakage radiation is also
hazardous.
However, this hazard exclusively exists when the
machine is improperly used (→section IMPROPER
USE) or during service tasks when the machine is
turned on and open with bridged safety switches.
These service and maintenance activities may only
be performed by authorized personnel (→section
SERVICE AND MAINTENANCE).
Product safety
The device described here is constructed according
to the state-of-the-art and recognized rules of safety.
Nevertheless, unavoidable residual dangers to
persons and property can arise from the LaserStar
T Plus that cannot be eliminated by the design of the
machine or constructive measures.
Therefore anyone transporting, setting up,
operating, servicing and repairing the LaserStar T
Plus must be instructed and understand the
potential dangers.
Carefully read, understand and observe the
operating instructions and especially the safety
instructions.
A lack of or insufficient knowledge of the operating
instructions negates all claims of liability against the
company BEGO Bremer Goldschlägerei Wilh.
Herbst GmbH & Co. KG.
Proper use
The LaserStar T Plus is designed exclusively for
welding metals and metal alloys. To use it for any
other purpose or for anything beyond this is to use it
improperly.
Proper use also includes:
• following all the instructions and heeding all the
information in this manual and
• the compliance of all necessary inspection and
maintenance intervals.
Only use the device if all safety mechanisms are
properly functioning.
Malfunctions that may have negative consequences
for safety must be dealt with immediately.
Improper use
The laser radiation produced by this laser device is
capable of melting, burning or vaporizing almost any
material. Depending on the composition of the
workpiece, gases and vapors dangerous to health
may be produced.
The exhauster is not designed to filter such gases or
vapors adequately.
Note: Using this device on non-metallic
materials, especially plastics, therefore consti-
tutes improper use.
Improper use includes the following:
• Operating the device with open covers and/or
safety elements that are bridged or rendered
inoperative,
• Welding of materials that generate harmful
gases or vapors without a suitable filter and
suction unit,
• Operation in explosion-protected areas and in a
dusty or moist environment.
BEGO Bremer Goldschlägerei Wilh. Herbst GmbH
& Co. KG assumes no liability for damage arising
from improper use.

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Structural modifications to the laser device
Do not make any modifications or additions to the
laser device without the permission of the manufac-
turer.
Only use original replacement parts and wearing
parts (→section MATERIAL in chapter SERVICE
AND MAINTENANCE). There is no guarantee that
parts purchased from third parties are constructed
and manufactured to meet stress and safety
requirements.
Hazardous areas
Particularly hazardous areas on the device are
identified by warning and reference signs. The
individual signs and the locations on the system
where they should be affixed are described in →
section WARNING SIGNS AND INFORMATION
SIGNS.
See also the section HAZARDS DURING NORMAL
OPERATION.
Safety and monitoring devices
EMERGENCY STOP devices
The device is equipped with the following
EMERGENCY STOP facility:
• EMERGENCY STOP button on the left exterior
of the device:
This button disconnects the laser power supply
from the mains. The heat exchanger and cont-
rol remain on.
Note: Take note of the discharge time of the
capacitor bank!
Protective coverings
Each time before turning on the machine, all covers
must be properly mounted.
Safety switch
Each time before the machine is turned on, the
safety switches (interlock switches) of the working
chamber door must be checked for proper operation
(→section CHECK SAFETY EQUIPMENT).
The safety switches may not be removed or bridged.
The danger otherwise exists that an uncontrolled
laser beam will cause serious eye damage or skin
burns.
Personal protective equipment
While properly using the machine, the eyes are
protected against damaging effects of the laser
beam and against the UV radiation arising in the
welding plasma and hazardous to the eyes while
observing the welding process (→ section DANGER
FROM THE LASER BEAM).
Organizational and personnel
measures
Obilgations of the employer
The employer undertakes not to allow anyone to
work with this device unless they
• are familiar with the basic regulations concer-
ning safety at work and accident prevention and
have been instructed in the use of this device;
• have read and understood the chapter concer-
ning safety and the warnings in this manual and
have confirmed this by their signature;
• have been instructed as to the dangerous
effects of laser radiation in accordance with the
valid regulations about accident prevention for
laser radiation BGV B2 or the equivalent natio-
nal or international regulations (e.g. EC Direc-
tive 60825 or IEC Publication 825).
The operator is also required to:
• immediately notify the responsible trade asso-
ciation of the initial startup of this laser device
as well as the agency responsible for occupati-
onal safety (labor inspectorate) 1)
(→Accident prevention regulation BGV B2
"Laser beam"),
1) A regular letter is sufficient for notification of the first startup of a laser device. Attach a copy of the CE statement of con-
formance and the clearance certificate.
We recommend using the "Laser notification form" accompanying the operating instructions.

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• to instruct personnel at regular intervals,
• to ensure that safety and hazard instructions for
the machine remain legible (→section WAR-
NING SIGNS AND INFORMATION SIGNS,
and
Obilgations of personnel
All those who work with the device must undertake
beforehand to
• comply with the basic regulations on safety at
work and accident prevention for laser radiati-
on, BGV B2, or the equivalent national or inter-
national regulations (e.g. EC Directive 60825 or
IEC Publication 825);
• to read the chapter concerning safety and the
warnings in this manual and to confirm this by
their signature.
Personnel qualification
Only personnel properly trained and instructed
about the dangers of laser radiation as required by
the BGV B2 regulations on accident prevention for
laser radiation or the equivalent national or interna-
tional regulations (e.g. EC Directive 60825 or IEC
Publication 825) are allowed to work with the device.
Trainees are only allowed to work with this device
under the supervision of someone who is an experi-
enced user.
The service tasks described in these operating
instructions may only be done by persons who,
apart from the above-cited qualifications, have been
correspondingly trained at BEGO Bremer
Goldschlägerei Wilh. Herbst GmbH & Co. KG.
Hazard during normal operation
Danger from the laser beam
The welding laser LaserStar T Plus is a Class 4
laser device.
Due to its fully enclosed design and the safety
elements this classification is restricted to potential
skin damage of the hands caused by faulty
operation during proper use, and to maintenance
work on the laser.
•Danger to hands
In normal operation, operators can accidentally
pass their hand in front of the pulsing laser
beam. In this case, the operator would receive
a restricted burn on his hand or finger
(→section WHAT TO DO IF YOU RECEIVE A
BURN).
•Eye protection
As far as eye protection is concerned, this
device fulfills the requirements that apply to a
class 1 laser device for the absolute safety of
the operator and anyone else in the laser wor-
king area (document of compliance).
This assumes however that the protective laser
glass of the observation window is kept clean
and is in a technically serviceable state.
•Laser protective window
Once the laser protective window becomes
defective (scratches, fractures, chips, cracks or
discoloration from solvents), it needs to be
covered and immediately exchanged with an
intact laser protective window.
Make sure that the laser protective window is
firmly seated in the frame.
In both cases, the danger exists that an uncont-
rolled laser beam will cause serious eye dama-
ge or skin burns.
Blinding hazard
Due to the thermal effect of the laser beam,
secondary radiation arises from most materials that
can be briefly watched through the laser protective
window without damaging the eyes.
This secondary radiation can cause blinding only
when observed for a long time as is the case with
the long unprotected observance of halogen lamps,
headlights or the sun.
Fire hazard
The high output of the laser can cause many
materials to burn.
For this reason, no containers with easily flammable
or explosive solvents or cleansers or flammable
material (such as paper or thin pieces of wood) may
be in the working chamber during laser operation.

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Harmful gases and vapors
The device is equipped only with a simple air filter
and a fan to extract welding gases and fumes from
the working chamber. The air filter consisting of a
spark protection mat and a filter fabric
(→REPLACING THE AIR FILTER).
When working with metals or metal alloys that may
release harmful substances when heated or
vaporized, an external extraction and filter unit must
be connected.
Noises
The continuous sound level produced by the device
is always less than 60 dB(A).
Specific safety information
Normal welding mode
The following instructions must be observed during
proper use of the device (if your hands are in the
working chamber):
• When positioning the workpiece, always make
sure that both arms are firmly lying in the rings
of the hand openings. This allows you reliably
and calmly move the workpiece into the correct
position for welding.
• Fingers and hands may not be positioned near
the laser beam due to the burn hazard. This
area is identified by cross-hairs when you
watch through the microscope.
• Do not wear shiny jewelry (rings, watches, bra-
celets). Depending on their surface properties,
they may focus the scattered radiation and thus
cause slight skin burns. Leakage radiation that
is emitted by the welded material can also cau-
se small burns on the surface of the hand under
certain unfavorable circumstances.
• Be calm and concentrate when triggering laser
pulses.
• For subsequent pulses, always use the micros-
cope to check that the workpiece is positioned
correctly.
What to do if you receive a bum
If you suspect that you have been burned your eyes,
immediately notify the laser safety supervisor or the
safety expert, and consult a doctor if necessary.
If you receive a burn from a laser pulse on your
finger or hand, treat the wound (obtain medical
assistance if the burn is strong enough). Although a
small burn is not particularly critical, you should still
make sure that no infection results.
Handling deionised water (cooling water)
In the inner cooling circuit of the laser, twice-distilled
and deionised water is used as coolant.
When using this water, do not let it contact your skin
and especially the mucous membrane of the eyes,
nose and mouth.
Immediately dry the wet spots on your skin with a
clean cloth or flush the wetted mucous membrane
with tap water.
Serving and maintenance
General instructions
• Any one operating, servicing and repairing the
laser device must have read and understood
the safety instructions in this instruction hand-
book.
• Check for loose screw connections and tighten
them after reinstalling.
• After servicing is finished, the operation of all
safety devices must be checked.
Tasks that can be performed by the opera-
tor
The operator may only perform service and mainte-
nance tasks that are described in this instruction
handbook.
When doing these tasks,
•always pull the power plug and
• observe the special safety instructions in the
corresponding sections.

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Jobs that may only be done by authorized
service personnel
All service and maintenance tasks that are not
described in this instruction handbook, especially
work on the electrical supply, live parts and compo-
nents of the laser head, may only be done by autho-
rized service technicians who meet the following
qualifications:
• precise understanding of accident prevention
regulation BGV A2 "Electrical systems and
equipment", and accident prevention regulation
BGV B2 "Laser beam" or equivalent national or
international regulations (e.g. EC Directive
60825 or IEC Publication 825),
• precise understanding of device-specific func-
tions and hazard sites such as high-voltage
parts, safety circuits and laser beam guidance.

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System description
Overall view
Fig. 1 Overall view
The Fig. 1 provides an overall view of the laser system when closed. The individual function elements are
identified by capital letters and defined below.
(A) Touch screen
(B) Stereo microscope
(C) Observation window with laser protective
glass
(D) Working chamber door
(E) Hand openings
(F) Pedal switch for triggering laser pulses
and controlling inert gas and exhauster
(G) Working chamber
(H) Removable cover
(I) Key switch

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Technical Data
The actual data can differ depending on the device features.
Dimensions and weight Width x height x depth
(maximum)
540 x 460 x 690 mm
Weight (about) 60 kg
Electrical data voltage - frequency - power
consumption - phases
230 V - 50/60 Hz - 10 A (1 phase)
110 V - 60 Hz - 13 A (1 phase)
Energy consumption
- max.(230 V)
- Standby
- ECO-Modus
1,7 kW
0,2 kW
0.01 kW
Laser data Laser crystal Nd:YAG
Wavelength 1,06 μm
Power 60 W
Pulse peak power 8 kW
Pulse energy 60 J
Pulse frequency Single pulse, 1 ... 50 Hz
Focal diameter 0,2 ... 2,6 mm
Laser class closed:
Laser class open:
4 (document of compliance
included)
4
Elektromagnetic compatibility
(EMC)
The device meets the requirements of the EMC directive. The test was
carried out on the basis of the relevant standards for the purpose of
classification.

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Display and operating elements
EMERGENCY STOP button
Fig. 2 EMERGENCY STOP button on the left side
Key switch
Fig. 3 Key switch on the right side
Main switch
Fig. 4 Main switch on the rear side
Key switch LASER EIN / AUS - ON / OFF
0 Off position: the key switch should be
in this position prior to turn on the
main switch.
1 Processor boots up, software is
started.
START Lamp power supply is switched on,
laser flash lamp is ignited.
Opposite to the switch positions 0
and 1 the Start position is a
momentary position (the key switch
does not remain in this position).

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Touch screen
Fig. 5 Main menu
All of the functions of the laser can be executed by
touching the symbols or texts on the touch screen.
The Fig. 5 shows the main menu for an operating
mode in which not all the functions are activated.
Depending on the current operating mode, a few of
the shown symbols may be missing.
Some functions are only optional.
Operating elements in the working cham-
ber
The main functions can be controlled by the
operating elements on the console inside the
working chamber.
Fig. 6 Control elements in the working chamber
Footswitch
The unit comes standard with a digital footswitch for
triggering pulses and - depending on the configu-
ration and setting of the device - for switching the
exhauster and the inertgas.
The footswitch is connected to the system with
flexible cable and can be moved into any position
comfortable for the operator. The footswitch is
equipped with a strap to easily draw the footswitch
towards the user.
NOTE
When touching small symbols (such as using the
keyboard of the →ALPHANUMERIC INPUT
WINDOW), it is recommendable to use a thin but
not sharp object.
NOTE
The individual functions of the main menu and
the submenus are explained in the section
DESCRIPTION OF THE MENUS.
V– / V+ Change the current value for the
lamp voltage
M– / M+ Select the memory location number
for saving / loading laser parameter
sets (see sections SAVING LASER
PARAMETERS and LOADING
LASER PARAMETERS).
Hz– / Hz+ Set the pulse frequency.
Ø– / Ø+ Set the diameter of the focal spot.
ms– / ms+ Set the required value for the
duration of the laser pulse.

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Interlock circuit
The LaserStar T Plus is equipped with a safety
circuit (Interlock circuit).
This interlock circuit, together with the laser shutter,
ensures that no hazardous laser radiation is emitted
from the device during operation.
The status of the laser shutter is displayed on the
touch screen →SHUTTER STATUS DISPLAY).
It is influenced by the status of the working chamber
door.
The laser shutter can only be opened when:
• the working chamber door is closed, and
• there is no disturbance in the power supply or
the cooling circuit.
Descriptions of the menus
Main menu
Fig. 7 Main menu
After the system is turned on, the →MAIN MENU is
displayed. All available functions and dditional
submenus can be retrieved from this menu.

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Main menu elements and their functions
Display of status and error messages (in the example above: Working chamber
door is open).
Button:
Display:
Open and close the shutter
Shutter status
(for details →SHUTTER STATUS DISPLAY)
Activates the inert gas feed.
Opens the window for setting the workpiece illumination (→SETTING
WORKPIECE ILLUMINATION).
Opens the →SERVICE MENUS.
Opens the pulse shape editor (→RETRIEVING AND EDITING PULSE SHAPES).
Display of the current temperature of the cooling water circuit:
Green: normal operating temperature
Orange: increased operating temperature
Red static: max. operating temperature reached
Red static: max. operating temperature exceeded
risk of shutdown
Laser parameter area:
Display and setting of the laser parameters (details →SETTING THE LASER
PARAMETERS IN THE MAIN MENU)
Touch these buttons to load the laser parameters stored under the previous
storage space [ M- ] or next storage space [ M+ ].
Display of the storage space name under which the currently loaded laser
parameters are saved.
Touch the storage space name to open the memory manager (→sections
SAVING LASER PARAMETERS and LOADING LASER PARAMETERS).
This symbol indicates features that are turned off or are not active.

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Shutter status display
The current operating state of the laser shutter is
shown with the following symbols
(solid vertical bars symbolize that the laser beam is
blocked) and colors.
How to operate
Unit is ready for operation.
The laser shutter is not enabled and can not be opened.
The laser shutter is enabled, but closed because the safety circuit is open (e. g.
the working chamber door is open).
The laser is ready to emit laser pulses (i.e. the laser shutter has been enabled and
is open).
After a technical malfunction, the device is blocked.
Once the malfunction has been eliminated, it must be acknowledged with this
touch button.
Press the Shutter button
in the working chamber
while
the working chamber door is closed.
Close working chamber door.
Touch this button
while the
working chamber door is open.