Mezzo PUK 3s User manual

OPERATING INSTRUCTIONS
MEZZO
Welding microscope with LED-Lighting
for use
with
PUK 3s
precision welders
Dear Customer
This manual will explain the operating principles and correct maintenance of your “mezzo”.
The “mezzo” is a microscope that has been specially modified to suit the here described
applications and uses. Lamperts’ stereo microscopes are precision instruments that
undergo intensive testing prior to delivery, to ensure that they reach you in perfect
condition. The design allows simple handling, needs only a minimum of maintenance and
at the same time offers outstanding functionality.
Please read this manual carefully and clearly observe the guidelines it describes; this way
malfunctions and operating errors can be avoided. Adhering to the guidelines will promote
the working life of the machine and assure that it remains in constant operational
readiness during this time; it will also ensure your personal safety.
This device may only be operated by qualified personnel, and then only for
its
designated use and in accordance with the guidelines here within. The
manufacturer accepts no responsibility, and is in no way liable for damage caused
by improper use or operation of the machine. Before first using your “mezzo”,
please be sure to carefully read the manual sections “General Safety Requirements”
and “Personal safety”.
Please retain these instructions for future reference.
A note on conformity marks
The equipment made by “Lampert Werktechnik GmbH”, fulfils the conformity requirements
of CE certification and is manufactured according to VDE guidelines.
The LCD-shutters used for this microscope have been tested and authorised, and curry
the DIN-CERTCO certification from the DIN authority for eye protection.
When overhauling or reconditioning our devices, we strongly advise only to use original
parts. Our customer service team is at your disposal, and will gladly assist in any way they
can.
The device may only be opened, or alterations carried out, by authorised customer
service technicians. Non-compliance will result in all warrantees and liability claims
becoming void.
LAMPERT WERKTECHNIK GmbH
February
20
10

2
TABLE OF CONTENTS
SECTION
A
SAFETY NOTICES AND TERMINOLOGY USED
3
1
DESIGNATED USE
3
2
INTRODUCTION
3
3
SAFETY IN
STRUCTIONS
3-1
General safety instructions
4
3-2
Personal safety and potential risks
4
4
INSTALLATION
4-1
Unpacking
5
4-2
Setup instructions and commencing work
5
4-3
Description of parts
6
5
INSTRUCTIONS FOR USE
5-1
First steps
7
5-2
Setting the viewing distance
7
5-3
Focussing
7
5-4
Dioptre settings
8
6
CARE AND MAINTENANCE
6-1
Maintenance of the optical components
8
6-2
Maintenance of the electrical components
9
7
TROUBLE SHOOTING
7-1
Problems with electrical components
9
7-2
Image quality
9
7-3
Problems with mechanical components
9
7-4
Repair
10
7-5
Transporting the microscope
10
8
TECHNICAL DATA
10
8-1
Technical information – microscope
10
8-2
Optical information – microscope
10
8-3
Technical information – LCD Shutter
10
9
DISPOSAL INFORMATION
11
10
EG
-
CONFORMITY DECLARATION
11

3
A
SAFETY NOTICES AND TERMINOLOGY USED
Warning!
“Warning!” Denotes a potentially dangerous situation. Failure to comply with these
notices can result in serious injury or even death.
Caution!
“Caution!” These notices show a situation that can result in minor injury or damage to
property if not complied with.
Please note!
“Please note!” Points out situations where ignoring the safety notice can negatively
affect the result of work being carried out and damage the equipment.
Important!
“Important!” Notices are helpful hints and other particularly useful pieces of information.
They do not indicate a potentially dangerous or harmful situation.
1
DESIGNATED USE
- The viewing or examining under the microscope of objects by looking through the
eyeglass.
- The illuminating of the working area.
The MEZZO may only be used in conjunction with PUK – precision welders.
The
MEZZO
may only be used when it is correctly connected.
Any other application of the appliance other than the above stated, is prohibited.
It is prohibited to use this apparatus out of doors. Use only in dry surroundings!
2
INTRODUCTION
Arc welding without protective equipment is dangerous and can lead to a painful
inflammation of the cornea. It can also lead to an irreversible clouding of the eye lenses
(cataract).
The MEZZO with its integrated LCD glare protection filter offers a reliable safeguard
against these dangers. It provides continuous protection against UV/IR-rays, as well as
sparks and splashes, both in the filters clear setting (Luminescence DIN3) as well as in
its dark setting (Obscurity DIN11).
The filter is constructed so that a dazzling from the glare of the electric arc is avoided.
Shortly before an electric arc is fired, the electronic circuitry of the PUK 3s, switches the
filter automatically from its clear setting (Luminescence DIN3) to its dark setting
(Obscurity DIN11). The filter then returns to the clear setting again immediately after the
electric arc is extinguished.
The MEZZO may only be used in conjunction with a PUK precision welding devices.

4
3
SAFETY INSTRUCTIONS
3-1 GENERAL SAFETY INSTRUCTIONS
The device may only be opened by a trained and qualified technician or electrician.
Before opening the device remove the mains plug from the wall socket, and make sure
that the machine is not receiving any electrical current. If you are unsure, or have any
questions, always consult a trained and qualified technician or electrician.
Before exchanging the LED module, remove the power supply plug. Only use original
replacement LED modules from Lampert.
Non-qualified persons are prohibited by law from tampering with any electrical devices
that are connected to the mains power supply, or otherwise receiving current. Non-
qualified persons may only operate the mains plug, power adapter or the main on/off
switch.
When carrying out repair or servicing work, the machine must always be disconnected
from the power supply. Throughout any work of longer duration, that requires the
qualified person to leave (even if only briefly) the place where work is being carried out,
the wall socket must also be securely closed off.
If it can be assumed that a safe operation of the device is no longer possible, then the
machine must be shut down and removed from the power supply; it must also be
secured against accidental re-operation or activation.
It is likely, and can be expected, that a safe operation of the device is no longer
possible when:
- The machine will not operate.
- Malfunctions occur.
- The machine will operate, but shows visible signs of damage.
3-2 PERSONAL SAFETY AND POTENTIAL RISKS
EYE PROTECTION DURING WELDING
Do not look into the arc without adequate eye protection. Only use a welders’
protective glare shield that contains a protective glass which conforms to
regulations (protection class 11, minimum).
The electric arc radiates rays of heat and light that can cause the user to be burned or
dazzled. In Addition to this, the arc also gives off UV-radiation. If the eyes are not
adequately protected, these invisible ultraviolet rays can cause a very painful
conjunctivitis, the effects of which are only noticeable several hours after exposure.
Those lingering or working in close proximity to the electric arc, must be made aware of
the risks, and supplied with the appropriate protective equipment. Wherever necessary, a
protective screen should be erected.
EYE PROTECTION WHILST OPERATING THE LED LAMP
Do not look into the LED Lamp, or into the reflection of the LED light, without eye
protection. Always use a welders’ protective glare shield with a minimum
protection class of 3.

5
4
INSTALLATION
4-1 UNPACKING
All the parts of the MEZZO stereo-microscope have been carefully packed so that they
reach you in perfect condition. We recommend that you retain the original packaging as
this will be needed if ever the device needs to be sent in, if you intend to store the item
for a longer period, or if it needs to be transported to a technical service centre for
servicing or repair.
The packaging of the MEZZO comprises the following items:
Microscope head with mount and LCD glare protection filter (4.2 Fig.1 - 10)
Two eyepieces with eyepiece covers (4.2 Fig. 2 - 1)
Supporting arm (for holding the welding hand-piece), with integrated LED light (4.2
Fig.12)
Bearing rod (4.2 Fig.1 -11)
Base plate, for attaching the bearing rod (4.2 Fig.1 -13)
Protective cover
Tools for adjusting the focussing levels
Remove and handle all microscope components with great care.
Avoid touching the lenses and optical elements. Also avoid contact with dust, water or
any other substances that could soil or damage the surface of the lenses and impair the
quality of the image.
4
-
2
SETUP INSTRUCTIONS AND COMENCING WORK
All stages of the microscope assembly must be carried out with great
care. The
individual parts must not be put together using excessive force.
Mount the bearing rod (11) to the base plate (13), using the bolt that is included; tighten it
with an open-ended spanner. Place upright, on a clean, flat, and stable surface.
Slide the supporting arm (12) over the bearing rod (11) and secure it slightly above the
middle of the rod, tightening hand tight.
Slide the microscope head (8) and its mount with retaining screw (9) over the bearing rod
(11), and secure it at about “3 fingers” width above the supporting arm for the hand-piece
(12).
Insert the eyepieces (1) with eyepiece covers, and secure them with the locking screw
(4).
Attach the “control lead for LCD glare protection filter (Shutter)” (15), to the back of the
welding device. (Observe the guidelines in the instruction manual of the welding device).
Connect the LED light with the PUK 3s.
Insert the mains cable (16) into the connection socket marked “LED-Lamp 800 mA”, on
the back of the welding device.
No
te!
Always test that the LCD glare protection filter (Shutter) (6) is working correctly
before you start welding.
By pressing in the rotary knob
“
Power
”
, of the “PUK U3” welding device, the
shutter can be tested. During this process it will change from its clear setting to its
dark setting, and back again.
If the LCD glare protection filter (Shutter) doesn’t change from its clear to dark
setting, then it must be exchanged straight away. No welding may be done unless
the microscope has a fully functioning shutter.

6
PLEASE NOTE!
WHEN USING THE MICROSCOPE WITH THE MODELS PUK111,
PUK2 OR PUK3, THE LED LAMP MUST BE DISCONNECTED FROM THE WELDER.
To power the LED lamp when using these models, it is necessary to use a transformer
plug. This is available as an optional extra.
Plug in the transformer plug into a suitable mains socket.
WARNING: before connecting the stereo microscope to the power supply, check
that the supply voltage is compatible with the voltage shown on the stereo
microscope.
4-2 DESCRIPTION OF PARTS
(fig. 1)

7
(fig. 2)
(1) Eyepiece
(2) Dioptre adjustment
(3) Eyepiece tubes
(4) Locking screw
(5) Prism casing
(6) LCD glare protection filter (Shutter)
(7) Protective glass
(8) Microscope head
(9) Retaining screw for microscope head mount
(10) Rotary knob “Focus”
(11) Bearing rod
(12) Mounting for hand piece with integrated LED-lighting
(13) Base plate
(14) Mains cable with plug and switch
(15) Control lead for LCD glare protection filter (Shutter)
5
INSTRUCTIONS FOR USE
5-1 FIRST STEPS
Adjust the height and position of the supporting arm (12) so that, when both hands are
resting on the hand rests (14), the work piece can easily be guided to the tip of the
electrode. Here remember to first correctly position the hand-piece in the supporting arm.
Switch the LED light on using the mains cable switch (16).
5-2 SETTING THE VIEWING DISTANCE
Look through the eye-pieces (1). By holding the prism casings (5), and moving them
inwards or outwards, the eye-piece tubes (3) can be adjusted to the correct viewing
distance for the user’s eyes.
The viewing distance is correct when the complete visual field can be seen through both
eyepieces and both views combine to produce the effect of a single field of vision.
The viewing distance should be individually set for each user.

8
5-3 FOCUSING
Mount the welding hand-piece in the supporting arm. Make sure that the hand-piece has
an electrode inserted and is correctly positioned.
Turn the rotary knob “focus”(10) until a focus setting is achieved, which is midway
between the min. and max. focus setting.
Adjusting the height of the microscope head mount:
Hold the microscope head (8) in one hand, (avoid touching the microscope lens). With
the other hand loosen the retaining screw of the microscope head mount (9). The
microscope head can now be freely adjusted in height.
Look through the eyepieces and slide the microscope head up or down on the bearing
rod until the object is in focus.
Tighten the retaining screw of the microscope head mount again.
Ensure a sharp image by adjusting the rotary knob “focus” (10).
Mount the welding hand-piece in the supporting arm. Make sure that the hand-piece has
an electrode inserted and is correctly positioned.
5-4 DIOPTRE SETTINGS
The ring for dioptre adjustment (2) is located on the left eye-piece tube (3). In the normal
position, the lower part of the sleeve is aligned with the marking on the eye-piece tube.
When a user’s eyes have differing strengths of vision:
With only the right eye open, look through the right eye-piece (1) and set the focus using
the rotary knob “focus” (10).
Now, with only the left eye open, look through the left eye-piece and adjust the focus by
turning the dioptre adjustment (2) on the left eye-piece tube (3) until the viewed object is
in focus.
6
CARE AND MAINTENENCE
Under normal working conditions, the stereo microscope MEZZO needs only a minimum
of maintenance and care. However there are a few vital points, which when observed will
ensure that the device gives lasting service in the years to come.
After finishing working with the MEZZO, always cover it with its dust protection cover.
Every so often please check all cables and plugs to make sure that they are not
damaged.
Every now and then, clean the device with a soft cloth.
SHOULD ANY MAINTENANCE OR REPAIRS BE NECESSARY THAT ARE NOT
DESCRIBED IN THIS MANUAL, PLEASE CONTACT YOUR LOCAL DEALER.
6-1 MAINTENANCE OF THE OPTICAL COMPONENTS
Do not try to dismantle the optical components. For repairs that are not described in this
manual, please consult your local dealer or the Lampert Service Centre.
Before cleaning the lens surface, remove any dust particles with a special brush. The
respective accessories can be found in every photo shop.
Cleaning the eye-pieces:
Do not remove the eye-pieces (1) from the eye-piece tubes (3).
Clean the outer surfaces and breathe on them while doing so.
Subsequently, dry the eye-piece lens using an appropriate paper or cloth. Dry the lens
with circular movements, starting in the centre and working your way outwards. Avoid
wiping a lens that is already dry, as it might easily be scratched.

9
Cleaning and replacing the protective glass of the LCD glare protection filter (Shutter):
Never dismount / detach, the LCD glare protection filter (Shutter)!
Clean only the surface. Use a soft cotton cloth dampened with window cleaning fluid.
Next, dry the lens also using a soft cotton cloth.
If the protective glass (7) needs to be replaced, slide the old glass forwards out of its
retaining fixture, and replace the glass in the same manner.
6-2 MAINTENANCE OF THE ELECTRICAL COMPONENTS
Warnin
g! Danger of glare, never look directly into the LED light or its reflections!
Caution! Only operate the LED light when the LED module is mounted in the
supporting arm of the hand-piece.
Changing the LED light module:
Switch the PUK off and remove the power cable of the mezzo from the PUK.
Loosen the retaining screws that hold the LED module, and remove the module.
Only use replacement LED modules from Lampert Company.
Mount the new LED module in the supporting arm of the hand-piece. Remember that the
module should fit flush with the underside of the supporting arm.
7
TROUBLE SHOOTING
PROBLEM
CAUSE
SOLUTION
7-1 PROBLEMS WITH ELECTRICAL COMPONENTS
A
The LED light doesn’t
work
Cable is not attached Switch on the cord switch Insert
the mains cable (16) into the
connection socket marked “LED-
Lamp 800 mA”, on the back of
the welding device
LED defective Change the LED module
(Chapter 6-2)
B
Shutter doesn’t switch
to its dark setting
Connecting cable from
Mezzo, is not attached to
the PUK (plugged it to
the wall socket)
Attach the connecting cable for
the Shutter (17) to the back of the
welding device
Shutter defective Exchange the shutter
7-2 IMAGE QUALITY
D
Poor resolution.
Eye-pieces soiled Clean eye-pieces
E
Ma
rks or
dirt in the field
of vision
Eye-pieces soiled Clean eye-pieces
Protective glass soiled Clean or change protective glass
* Note: Marks in the field of vision can also be caused by
dust or dirt on the inside of the eye-pieces. We therefore
recommend to always have the lenses cleaned by an
authorised service technician
7-3 PROBLEMS WITH MECHANICAL COMPONENTS
F
Focus doesn't remain in
the position it has been
set to
The microscope head (8)
slides down
Adjust the tension of the
rotary knob “focus”(10)

10
7-4 REPAIR
Should the MEZZO need reconditioning, maintenance or repairs at any time, we
recommend that it be sent, in its original packing, to the dealer where it was bought.
Please include a detailed description of the fault or the reconditioning work that is
required.
WARNING!
The device may only be opened, or alterations carried out, by
authorised customer service technicians!
7-5 TRANSPORT THE MICROSCOPE
If possible try to avoid moving the microscope.
When moving and handling the stereo microscope, carry it with both hands. Thereby
holding the bearing rod (11) with one hand, and the base plate with the other (13).
Always hold the microscope upright.
8
TECHNICAL DATA
8-1 TECHNICAL INFORMATION - MICROSCOPE
■
LCD glare protection filter and LED light module, for use only in
conjunction with PUK precision welding devices
■
Device suitable solely for welding in dry surroundings!
■
Operating temperature +5°C to +40°C
■
Mains Voltage for optionally available mains adapter plug ~230 V / 50-60 Hz
+/-15%
■
Bulb “LED-module” 2,5W / 800mA
■
Protection category III
■
Insulation class B
■
Degree of protection IP 20
■
Weight 3,7 Kg
8-2 OPTICAL INFORMATION - MICROSCOPE
■
Lens 1,0
■
Eye-piece lenses 10x
■
Work distance 140 mm
■
Degree of magnification 10x
■
Size of “field of vision” in mm 20 mm
8-3 TECHNICAL INFORMATION - LCD SHUTTER
■
Degree of luminescence DIN 3
■
Degree of obscurity DIN 11
■
Switching time <50ms
■
UV protection >UV 15
■
IR protection >IR 14

11
WARNING!
The device may only be opened by a trained and qualified technician!
Text, pictures and illustrations represent the technical stand at the time of printing; we
reserve the right to make changes as necessary.
9
DISPOSAL INFORMATION:
Devices that are no longer in use (waste) can be made unserviceable by removing the
mains power cable.
For EU countries only:
As specified in European directive 2002/96/ EG on waste electrical and electronic
equipment, used electrical appliances must be collected and stored separately and
introduced into an environmentally compatible disposal system.
10
EG
-
CONFORMITY DECLARATION
The Manufacturer,
Lampert Werktechnik GmbH
Ettlebener Str. 27, 97440 Werneck, Germany,
declares herewith that the following product:
Welding microscope with integrated LCD glare protection filter
MEZZO
Complies with the provisions of the above mentioned directive, including any
amendments hereof, that were valid at the time of declaration.
Relevant EEC guidelines:
According to low voltage guidelines 2006/95/EG
According to EMV (electro-magnetic compatibility) guidelines 2004/108/EG
The
following harmonised standards were used:
EN 60974-6 EN ISO 12100-1 EN ISO 12100-2
DIN EN 169 DIN EN 379
Person duly responsible for technical documentation: Hammer N.
Werneck, February 2010
Lampert Werktechnik GmbH
Andrea Bauer – Lampert (President and CEO)