35,0(6Operating Manual
Translation of the Original Instructions

Absorber V40 with water-cooling
NIR or CO2

Revision 02/2018 EN35,0(6Absorber V40 with water-coolingContents
1

Basic Safety Instructions

42

Symbol Explanation

63Install/remove the Absorber V40

743.1

Install the Absorber V40........................................................................... 73.2

Remove the Absorber V40...................................................................... 9Connect the water supply

104.1

Water quality.......................................................................................... 104.2

Connect the water supply...................................................................... 105Operation

126Dimensions

137Technical Data

148Product Disposal

15

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Basic Safety Instructions

Intended UseThe Absorber V40 is intended for installtion and permanent integration into a lasersystem. The Absorber V40 converts the radiation of NIR or CO2-lasers into heat, whichis then dissipated into the cooling water that is flowing through. Please observe andadhere to the specifications and limit values given in Chapter 3 „Install/remove the Absorber V40“ on Page 7. Forms of use, other than the intended use described herein,
are considered improper. For the safe use of the Absorber V40, the information in thisoperating manual must be adhered to.
Using the Absorber V40 for use other than that described in this operating manual isprohibited strictly by the manufacturer. By usage other than intended, the Absorber
V40 can be damaged or destroyed. This poses an increased health hazard up to andincluding fatal injuries. When operating the Absorber V40, it must be ensured that there
are no potential human health hazards.
The Absorber V40 does not ensure complete absorption of the laser radiation. Pleasekeep in mind that there is a residual reflection (typically 0.5 % to 1 %). Please observe
that, even with the use of the Absorber V40, scattered radiation (laser class 4) can arise. Hence, the applicable safety regulations are to be observed and necessary protective measures must be taken.
Observing Applicable Safety Regulations
Personal protective equipment (PPE) is required when humans are present in a hazardous zone with uncovered visible or invisible laser radiation or particularly uncovered
laser beam systems, beam guidance systems or processing areas. This holds true forany application of this equipment. During measurement procedures there is always anunavoidable risk of laser radiation through direct or reflected emissions. The applicablesafety regulations are stipulated in ISO/CEN/TR standards as well as in the IEC-608251 regulation, in ANSI Z 136 “Laser Safety Standards” and ANSI Z 136.1 “Safe Use ofLasers”, published by the American National Standards Institute, and additional publications, such as the “Laser Safety Basics”, the “LIA Laser Safety Guide”, the “Guide for
the Selection of Laser Eye Protection” and the “Laser Safety Bulletin”, published by theLaser Institute of America, as well as the “Guide of Control of Laser Hazards” by ACGIH.
Taking Necessary Safety Measures
If there are people present within the danger zone of visible or invisible laser radiation,for example near laser systems that are only partly covered, open beam guidance sys4

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Absorber V40 with water-cooling

35,0(6tems or laser processing areas, the following safety measures must be taken:•••••••••

Please wear safety goggles adapted to the laser wave-length and operating
mode of the laser beam source in use.
Depending on the laser source, it may be necessary to wear suitable protective
clothing or protective gloves.
Please protect yourself from direct laser radiation, scattered radiation as well asfrom beams generated from laser radiation (e.g. by using appropriate shielding
walls or by attenuating the radiation to a harmless level).
Please use beam guidance- or beam absorber elements which do not emit any
hazardous particles when irradiated with laser radiation and which can withstandthe beam sufficiently.
Please install safety switches and/or emergency safety mechanisms which enable
an immediate closure of the laser shutter.
The Absorber V40 temperature is to be monitored with a temperature sensor.
The cooling water flow rate is to be monitored.
Please ensure a stable installation according to Chapter 3 „Install/remove theAbsorber V40“ on Page 7) at the designated locations in order to prevent a
relative motion of the Absorber V40 to the beam axis, reducing the risk of scattered or directly reflected radiation.
Connect the Absorber V40 to the on-site water supply according to Chapter
4 „Connect the water supply“ on Page 10 to ensure sufficient cooling of theAbsorber V40.

Employing Qualified Personnel
All users of the Absorber V40 must have been trained in the installation and operation of
the Absorber V40 and they need to have a basic knowledge about the work with highpower lasers, beam guidance systems as well as focussing units.
Modifications
The Absorber V40 must not be modified, neither constructionally nor safety-related,without our explicit permission. Modifications of any kind will result in the exclusion ofour liability for resulting damages.
Liability Disclaimer
The manufacturer and the distributor of the Absorber V40 do not claim liability for damages or injuries of any kind resulting from an improper use or handling of the Absorber
V40 or the associated software. Neither the manufacturer nor the distributor can be held
liable by the buyer or the user for damages to people, material or financial losses due toa direct or indirect use of the Absorber V40.
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35,0(62Absorber V40 with water-cooling

Symbol Explanation

The following symbols and signal words indicate possible residual risks:

DANGER
means that death or serious physical injuries will occur if necessary safety
precautions are not taken.

WARNINGmeans that death or serious physical injuries can occur if necessary safety
precautions are not taken.

CAUTIONmeans that a slight physical injury can occur if necessary safety precautions
are not taken.

NOTICEmeans that property damages can occur if necessary safety precautions arenot taken.
Further symbols that are not safety-related:
Here you can find useful information and helpful tips.

X

6Call for action

Revision 02/2018 ENAbsorber V40 with water-cooling

3Install/remove the Absorber V40

3.1

Install the Absorber V40

35,0(6Touching the Absorber V40 with bare hands can lead to oxidization of the surfaces onthe Absorber V40. Only touch the Absorber V40 with protective gloves.

DANGER
Serious eye or skin injury due to laser radiation
If the stability of the Absorber V40 is not guaranteed or if the Absorber
V40 is not installed with the entrance aperture towards the laser beam,
scattered or directed reflection of the laser beam will result.

1.
2.

X

Install the Absorber V40 with the entrance aperture facing the laserbeam.

X

Install the Absorber V40 in a way that ensures, that the Absorber V40
can not shift or fall.

To avoid contamination, wear protective gloves.
Continued on next page.

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35,0(63.
4.
5.
•Absorber V40 with water-cooling

Align the Absorber V40 with the entrance aperture towards the laser beam. Observe the specifications in Chapter 7 „Technical Data“ on Page 14.
Install the Absorber V40 in the 4 threaded holes M5 at the bottom.
Ensure a stable installation of the Absorber V40:The Absorber V40 must not be able to move.
The 2 threaded holes M3 on the opposite side are for installing a temperature
sensor (not in scope of delivery).

Installation Absorber V40

Installation Temperature Sensor

Fig. 3.1: Threaded holes

8

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3.2

35,0(6Remove the Absorber V40

Touching the Absorber V40 with bare hands can lead to oxidization of the surfaces onthe Absorber V40. Only touch the Absorber V40 with protective gloves.
Even when used as intended, parts of the Absorber V40 can become very hot. Temperatures above 70 °C can be reached.

WARNING
Risk of burns – Hot surface
The Absorber V40 is very hot after operation. Touching the hot Absorber
V40 can cause severe burns.
X Allow the Absorber V40 to cool for a adequate time before removing it.
Make sure before touching the Absorber V40 that it is no longer hot.
1.
2.

To avoid contamination, wear protective gloves.
After cooling down the Absorber V40 unscrew 4 M5 fixing screws at the bottom(see Fig. 3.1 on Page 8) and remove the Absorber V40 from the laser system.

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4.1

Water quality••
•••

4.2

Absorber V40 with water-cooling

The water-cooled Absorber V40 is made of copper and can be operated with tap
water as well as demineralized water.
Do not operate the Absorber V40 on a cooling circuit containing additives such as
anti-freeze.
Do not operate the Absorber V40 on a cooling circuit in which aluminum components are installed. Especially when it comes to the operation with high powersand power densities, it may otherwise lead to corrosion in the cooling circuit. Inthe long term, this reduces the efficiency of the Absorber V40 and the coolingcircuit.
Should the cooling fail, the Absorber V40 can withstand the laser radiation for a
few seconds. In this case, please check the Absorber V40 as well as the water
connections for damages and replace them if necessary.
Large dirt particles or teflon tape may block internal cooling circuits. Therefore,
please thoroughly rinse the system before connecting it.

Connect the water supply

The Absorber V40 is optionally equipped with 2 ELSA push-in fittings for hose outer
diameters of 12 mm.
1.
2.
3.

To avoid contamination, wear protective gloves.
Connect the 2 ELSA push-in fittings with the on-site water supply (see Fig. 4.1 on
Page 11).
Continued on next page.

10

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Absorber V40 with water-cooling

35,0(6NOTICE
Damaging/Destruction of the Absorber V40
The water-cooled Absorber V40 is made of copper and can be operated
with tap water as well as demineralized water.

4.
5.
•XDo not operate the Absorber V40 on a cooling circuit in which aluminumcomponents are installed.

XDo not operate the Absorber V40 without water cooling.

XFor a sufficient cooling of the Absorber V40, a minimum flow rate of0.7 l/min/kW is required.

XObserve the requirements in Chapter 4.1 „Water quality“ on Page 10.

Activate the on-site water supply.
Check whether the on-site water cooling is in operation:
The Absorber V40 must feel cool to the touch.

Fig. 4.1: 2 ELSA push-in fittings in the G 3/8 inch threaded holes

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35,0(65Absorber V40 with water-coolingOperationDANGER
Serious eye or skin injury due to laser radiation
The Absorber V40 does not ensure complete absorption of the laserradiation. Please keep in mind that there is a residual reflection (typically0,5 % to 1 %).
XObserve the Safety Instructions in Chapter 1 „Basic Safety Instructions“on Page 4.

The Absorber V40 temperature is to be monitored with a temperature sensor.
The cooling water flow rate is to be monitored.

DANGER
Fire hazard due to glowing components
In case of longer irradiation without cooling the Absorber V40 can overheat and start to glow in connection with temperatures of more than
1000 °C.
X

12Do not keep flammable materials in the environment of the Absorber
V40.

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635,0(6Dimensions

All dimensions given in mm

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35,0(67Absorber V40 with water-coolingTechnical Data
Specifications
Maximum Power Density

6 kW/cm²

Maximum Laser Power

8 kW

Divergence±5 mradBeam Incidence

Vertically and centrally into the opening aperture
Maximum incidence angle deviation ±30 mrad
Maximum positioning offset ±1 mm

Water supply
Minimum Flow Rate0.7 l/min/kW (Recommendation 1.0 l/min/kW)

Minimum Water Pressure

4 bar

Water Quality

Operation with tap water
Operation also possible with demineralised water

Water curcuit

No use of aditives in the cooling circuit
Do not operate in a cooling circuit where aluminumcomponents are installed

The Absorber V40 temperature is to be monitored with a temperature sensor.
The cooling water flow rate is to be monitored.
Dimensions and Connection
Opening aperture

40 mm

Connections for 2 ELSA push-in
fittings

G 3/8 inch internal threads

Optionally 2 ELSA push-in fittings

Hose outer diameter 10 mmVersionsNIR

Radiation from 1030 to 1060 nm wavelength

CO2Radiation with 10,6 µm wavelength

14

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Absorber V40 with water-cooling

835,0(6Product Disposal

Provided that you are located in the EU, you are welcome to send your Absorber V40
to PRIMES Germany, where it will be disposed of free of charge (this service does notinclude shipping costs).

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PRIMES GmbH
Max-Planck-Str. 264319 Pfungstadt
Germany
Telephone: +49 6157 9878-0