Atlas XENOTEST 150 S+ User manual

Operating Instructions
XENOTEST®150 S+

Operating Instructions XENOTEST 150 S+
- 2 -
Contents Page
1 Notes on Safe Operation ................................................................................................................................................... 4
1.1 Explanation of Symbols ................................................................................................................................................ 6
1.2 General Safety Information ........................................................................................................................................... 7
2Device Delivery ................................................................................................................................................................... 8
2.1 Packaging ..................................................................................................................................................................... 8
2.2 Standard Delivery .......................................................................................................................................................... 8
3Installation Site Requirements .......................................................................................................................................... 9
3.1 Installation Site Environment ....................................................................................................................................... 9
3.2 Ventilation ...................................................................................................................................................................... 9
3.3 Device Exhaust System ................................................................................................................................................ 9
3.4 Water Supply ................................................................................................................................................................. 9
3.5 Space Requirements.................................................................................................................................................. 10
4 Device Description ........................................................................................................................................................... 11
4.1 Front and Right View................................................................................................................................................... 11
4.2 Rear, Left, and Top View ............................................................................................................................................. 12
4.3 Sample Chamber Overview ....................................................................................................................................... 13
4.4 Operator Panel Overview ............................................................................................................................................ 14
5 Functional Description ..................................................................................................................................................... 15
5.1 Program Control ......................................................................................................................................................... 15
5.2 Absorption Filter System............................................................................................................................................. 16
5.3 Overview of the Filter Systems ................................................................................................................................... 17
5.4 Irradiation System....................................................................................................................................................... 18
5.5 Ventilation System ...................................................................................................................................................... 19
5.6 Moisture and Humidifying Functions ......................................................................................................................... 20
5.7 Measuring and Regulating Sensors.......................................................................................................................... 21
6 Commissioning ................................................................................................................................................................ 22
6.1 Initial Startup................................................................................................................................................................ 22
6.2 Device Component Inspection ................................................................................................................................... 22
6.3 Xenon Bulb Installation/Removal............................................................................................................................... 23
6.4 Filter Replacement ..................................................................................................................................................... 25
6.5 Sample Carrier Loading ............................................................................................................................................. 26
6.6 Optional Sensor Installation/Removal ....................................................................................................................... 28
6.7 Filling the Water Container ......................................................................................................................................... 29
6.8 Exhaust System Connection ...................................................................................................................................... 29
6.9 RS 232 Interface Setup............................................................................................................................................... 30
6.10 Power Connection ...................................................................................................................................................... 30
6.11 Optional Printer Setup ................................................................................................................................................ 31
7 Operation .......................................................................................................................................................................... 33
7.1 Adjustment of Chamber Humidity.............................................................................................................................. 33
7.2 Creating a Test Program ............................................................................................................................................ 34
7.3 Creating a Demonstration Program .......................................................................................................................... 35
7.4 Parameter Printout...................................................................................................................................................... 41
7.5 Changing the Fan Speed............................................................................................................................................ 41
7.6 Interrupting the Test Program .................................................................................................................................... 41
8 Shut Down ........................................................................................................................................................................ 42
8.1 Switching the Device Off ............................................................................................................................................. 42
8.2 Emergency Shutoff...................................................................................................................................................... 42
8.3 Sample Removal ........................................................................................................................................................ 42
9 Troubleshooting ............................................................................................................................................................... 43
9.1 Error Messages and Actions ...................................................................................................................................... 43
10 Upkeep .............................................................................................................................................................................. 44
10.1 Inspection.................................................................................................................................................................... 44
10.2 Repairs........................................................................................................................................................................ 44
10.3 Maintenance................................................................................................................................................................ 45
10.4 Cleaning...................................................................................................................................................................... 47
11 Technical Specifications ................................................................................................................................................. 48
12 Spare Parts / Accessories .............................................................................................................................................. 48

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Operating Instructions XENOTEST 150 S+
Index of Tables Page
Tab. 1 Overview of the Filter Systems ................................................................................................................................... 17
Tab. 2 Overview of the filter inserts, absorption filter system............................................................................................... 25
Tab. 3 Settings for ISO 105 B02 ............................................................................................................................................ 35
Tab. 4 Settings forAATCC TM 16H ........................................................................................................................................ 35
Tab. 5 Settings for Exp. Cond. M&S ....................................................................................................................................... 35
Tab. 6 Demonstration program............................................................................................................................................. 36
Tab. 7 Error messages and corrective actions..................................................................................................................... 44
Index of Figures Page
Abb.1 Space requirements ................................................................................................................................................... 10
Abb.2 Front and right view..................................................................................................................................................... 11
Abb.3 Left and rear view........................................................................................................................................................ 12
Abb.4 Top view....................................................................................................................................................................... 12
Abb.5 Sample chamber overview ......................................................................................................................................... 13
Abb.6 Operator panel overview ............................................................................................................................................. 14
Abb.7 Control elements ........................................................................................................................................................ 15
Abb.8 Absorption filter system 1 ........................................................................................................................................... 16
Abb.9 Absorption filter system 2 ........................................................................................................................................... 16
Abb. 10 Absorption filter system 3 ........................................................................................................................................... 16
Abb. 11 Spectral energy distribution with the absorption filter system .................................................................................. 17
Abb. 12 Rotation, sample carrier............................................................................................................................................. 18
Abb. 13 Rotation, sample carousel......................................................................................................................................... 18
Abb. 14 Ventilation system....................................................................................................................................................... 19
Abb. 15 Ventilation air circulation ............................................................................................................................................. 19
Abb. 16 Misting and humidifying functions.............................................................................................................................. 20
Abb. 17 Xenon bulb removal.................................................................................................................................................... 23
Abb. 18 Xenon bulb replacement ............................................................................................................................................ 24
Abb. 19 Filter replacement....................................................................................................................................................... 25
Abb. 20 Standard sample carrier............................................................................................................................................. 26
Abb. 21 Special sample carrier................................................................................................................................................ 26
Abb. 22 Sample carrier for blue light scale ............................................................................................................................. 27
Abb. 23 XenoCal sensor installation....................................................................................................................................... 28
Abb. 24 Black standard temperature sensor installation....................................................................................................... 28
Abb. 25 Filling the water container .......................................................................................................................................... 29
Abb. 26 Exhaust system connection ....................................................................................................................................... 29
Abb. 27 RS 232 interface setup ............................................................................................................................................... 30
Abb. 28 Printer setup................................................................................................................................................................ 31
Abb. 29 Threading the paper roll ............................................................................................................................................. 31
Abb. 30 Humidity diagram........................................................................................................................................................ 33
Abb. 31 Irradiator cooling air filter, removal and installation .................................................................................................. 45
Abb. 32 Sample chamber cooling air filter, removal and installation .................................................................................... 45
Abb. 33 Water pump filter, removal and installation ............................................................................................................... 46
Abb. 34 Draining the water container ...................................................................................................................................... 47

Operating Instructions XENOTEST 150 S+
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Dear User,
These Operating Instructions describe the XENOTEST150 S+ weathering device. Please note that only properly trained
individuals with appropriate qualifications may work on this device:
• The XENOTEST150 S+ may only be operated by authorized, qualified personnel. The following individuals
are considered to be qualified personnel:
Those who have obtained their knowledge through specialized training;
Those who have been trained in the operation and operating features of the XENOTEST150 S+ on the
basis of these Operating Instructions;
Those who, on the basis of their professional activities and professional experience and training with
regard to safety-related regulations are capable of assessing and recognizing potential work hazards.
• Only properly trained cleaning personnel may perform cleaning tasks on the device or its components.
• Please read these operating instructions carefully prior to the first use of the XENOTEST150 S+ in order to fully utilize
the device's advantages and to avoid possible damage..
• Should a particular problem arise which you feel is not adequately treated in these operating instructions, we urge you
for your own safety to contact your supplier.
ATLAS Material Testing Technology GmbH
Vogelsbergstr. 22
D-63589 Linsengericht, Germany
Telephone: ++ 49 / 6051 / 707-140
Fax: ++ 49 / 6051 / 707-149
1Notes on Safe Operation

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Operating Instructions XENOTEST 150 S+
Dear Operator,
This device has been manufactured in accordance with the current state-of-the-art and is operationally safe. Nonetheless,
this device can pose hazards, particularly if it is operated by inadequately trained personnel or if it is employed for other
than its intended and designated purpose:
• For personnel responsible for working with this device, the employer shall prepare written instructions based on these
operating instructions in a form that is easily understandable and in the operators' native language (FRG: Accident
Prevention Code, UVV VGB 1 § 7, 2).
• Using these instructions, train the operating and cleaning personnel in the function, operation, and care of the device.
• The contents of these operating instructions are subject to change at any time, without prior notification.
• The German version of these operating instructions remains binding for translations into foreign languages.
• For safety reasons, alterations to, or modifications of, this device are prohibited.
• Store these operating instructions securely near the device in order to be able to refer to the safety infor-
mation and important operating information at any time.
Trademarks:
XENOTEST®isa registered trademark.
Allothertrademarks mentioned in these operating instructions are the sole property oftheassociated manufacturer.
Copyright©
2000,ATLASMTT GmbH•D-63589 Linsengericht • Germany
1Notes on Safe Operation

Operating Instructions XENOTEST 150 S+
- 6 -
1Notes on Safe Operation
Symbols in these operating instructions:
WARNING!
Disregarding this information can result in serious injury or
death.
CAUTION!
Disregarding this information can result in slight to severe
injury and property damage.
NOTE!
Provides application tips and useful information.
Warning against hazardous solvents.
Warns against hot surfaces.
Warns against electrical shock.
Symbols on the device:
WARNING OF A HAZARDOUS SITE!
Caution! Follow the operating instructions.
HOT SURFACE!
Warns against the risk of burns.
1.1 Explanation of Symbols

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Operating Instructions XENOTEST 150 S+
1.2 General Safety Information
Proper use
• The XENOTEST 150 S+ is used to irradiate and weather
material samples.
• The device is suitable for continuous operation.
• The XENOTEST 150 S+ has been inspected for electro-
mechanical compatibility and is suitable for installation
in industrial areas.
Improper use
• The XENOTEST 150 S+ may not be operated in areas
that do not meet the installation site specifications.
• Easily flammable or explosive materials, fabrics, or li-
quids may not be used as samples.
• Materials, fabrics, or liquids which release toxins may
not be used as samples.
Safety requirements
• DIN EN 55014-1, Electromagnetic Compatibility - Requi-
rements for Domestic Equipment, Electric Tools, and
Similar Electric Equipment - Part 1: Interference Emis-
sion;Product Family Standard (IEC/CISPR 14-1: 1993
+ Al: 1996 + Corrigendum: 1997 + A2:1998); German
Version, EN 55014-1: 1993 +All: 1997 + A2: 1999
• DIN EN 55014-2, Electromagnetic Compatibility -
Requirements for Domestic Equipment, ElectricTools,
and Similar Electric Equipment - Part 2: Interference Re-
sistance; Product Family Standard (CISPR 14-2:1997);
German Version, EN 55014-2: 1997
• DIN EN 55011, Industrial, Scientific, and Medical High
FrequencyDevices(ISMdevices)-RadioInterference-Limit
Values and Measurement Procedures (IEC/CISPR
11:1997, modified + Al: 1999); German Version, EN
55011: 1998 +All: 1999
• DIN EN 61010-1, Safety Requirements for Electrical
Measurement, Control, Regulating, and Laboratory
Devices; Part 1: General requriements (IEC 61010-1:
1990 + A 1: 1992, modified); German Version, EN
61010-1: 1993
• DIN EN 61000-6-2, Electromagnetic Compatibility
(EMC) - Part 6-2: Basic Standards: Interference Resi-
stance; Industrial Area (IEC 61000-6-2:1999); German
Version, EN 61000-6-2: 1999
• DIN EN 61000-4-4, Electromagnetic Compatibility (EMC)
- Part 4: Test and Measurement Procedures; Primary
Section 4: Testing interference resistance to rapid tran-
sient electrical interference/bursts;
EMC Basic Standard (IEC 61000-4-4:1995); German
Veriosn, EN 61000-4-4: 1995
• DIN EN 60204-1, Machine Safety - Electrical Equipment
on Machinery - Part 1: General Requirements (IEC
60204-1:1997 + Corrigendum 1998); German Version,
EN 60204-1: 1997
1Notes on Safe Operation
Safety equipment
The XENOTEST 150 S+ is equipped with interlock switches
and temperature sensors which monitor the individual
functional units.
• If the sample chamber door is opened while the unit is
operating, all functional units are switched off.
• A temperature switch monitors the temperature develop-
ment in the sample chamber. Ifthe temperatureexceeds
85° C, all functional units are switched off.
• A temperature switch monitors the exhaust air. If the
exhaust temperature exceeds 100 °C, all functional units
are switched off.
• A float switch turns all functional units off as soon as the
level in the water tank drops below a minimum fill level.
• If the xenon bulb fails to light after four attempts, the
ignition procedure is aborted.
Once the device has been shut off because of a fault, it can
only be restarted after a software reset has been performed.
An interrupted attempt will continue from the point at which
the interruption occurred.
Power supply
Power to the XENOTEST 150 S+ is provided via a mains
power supply connection at:
230 V ±10 %, 50/60 Hz, (1/N/PE oder 2/PE), CEE (32A,
3pol., 6h).
Disposal
• Disposeof the packaging material in accordance with
locallyapplicableregulations. Chapter 2, Section 2.1,
"PackagingMaterials" contains a list of thepackaging
materialsused
• Usedequipmentcontainsvaluablematerialsandshould
thereforenot simply betaken to thenearest waste dis-
posalsite. Instead, contact your local governmentau-
thoritiesforinformation regarding recycling programs
in your area.
• Xenon bulbs are considered to be special waste and
canbe returned toATLASMTTGmbH for disposal for
afee.
Allother components ofthe device canbedisposed of
alongnormalrecycling paths.

Operating Instructions XENOTEST 150 S+
- 8 -
2Device Delivery
2.2 Standard Delivery
The XENOTEST 150 S+ is not ready to use at delivery.
The separately packaged components must first be installed
before the device is operational.
The standard delivery includes:
Base unit with the following functional units:
• Irradiation system with the xenon bulb;
•Exterior cylinder made of special UV glass (Su-
prax);
•Synchronousand rotating gear;
•Air cooling system;
• Humidification system.
Metering system, consisting of:
• Sensor to measure the sample chamber tempera-
tureandsample chamber humidity.
Technical documentation:
• Operating Instructions;
• SoftwareDocumentation;
•Spare parts list.
NOTE - Test equipment!
Sample carriers and an optical filter system are required in
order to perform weathering and irradiation tests.
2.1 Packaging
Depending on its destination, the XENOTEST 150 S+ is
delivered in appropriate packaging (a crate or sturdy box).
All packaging materials can be separated and are recycla-
ble.
• Shipping crate made of plywood;
• Steel screws to assemble the shipping crate and secure
its lid;
• Polyethylene sheeting (PE);
• Polyethylene foam (PE)
The following sensitive components are packed separately:
• Xenon bulb;
• Exterior cylinder.

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Operating Instructions XENOTEST 150 S+
3Installation Site Requirements
3.4 Water Supply
To humidify the sample chamber and to moisturize the
samples, the XENOTEST 150 S+ requires treated water.
This treated water circulates through a closed system fed
from a container inside the device.
The water container can be either manually refilled or may
be connected to a water treatment and preparation system.
• Connection: G 3/8 "
The treated water must conform to the following quality stan-
dards.
• Conductivity: < 5 µS/cm
• pH: 6-8
• Solids content: < 1 ppm
(measured as silicon dioxide)
Various water preparation systems for use with weathering
equipment are available from Millipore GmbH.
Millipore GmbH
Hauptstr. 87
65760 Eschborn, Germany
Sales:
Tel. (++) 6196 / 494-101/128
Fax (++) 6196 / 482237
[email protected]
Techn. Service
Tel. (++) 6196 / 494-140
www.millipore.com
3.1 Installation Site Environment
Environmental requirements at the installation site:
During continuous operation, the warm air exhausted by the
irradiator cooler results in a constant change in the room
environment.
For this reason, the device may only be operated in ade-
quately ventilated rooms that are free of dust.
• Ambient temperature range: 18 °C to 25 °C
• Relative humidity: 75%, maximum
3.2 Ventilation
The installation site must be equipped with an air exchange
system with a capacity to provide a minimum intake air
volume of 300 m³/hr.
Incoming air must be filtered through an EU 4 class air filter.
3.3 Device Exhaust System
The XENOTEST 150 S+ irradiator cooling system must be
connected to an exhaust system. The exhaust air from the
irradiator cooler can be vented directly to the outside air. The
exhaust system must meet the following requirements:
• The exhaust ducts must be made of flexible, heat-resi-
stant material because the exhaust air temperature can
reach 120° C.
• The exhaust air duct may be no longer than 3 m.
• The exhaust air duct diameter must be at least 100 mm.
The connector on the XENOTEST 150 S+ has a diame-
ter of 100 mm.
• The exhaust air duct may contain no more than two 90°
angle bends.
• If, in order to install the exhaust air duct, lengths excee-
ding 3 m or more than two 90° angle bends are requi-
red, a separate exhaust fan must be installed on site.
The exhaust air from the sample chamber can be vented
into the installation room for recycling by the room's ven-
tilation system.
NOTE - Functional impairment!
Failure to maintain the maximum exhaust air duct length
or the inclusion of more than the maximum of two 90° angle
bends may result in the device exhaust system overheating.
In turn, this will result in the XENOTEST 150 S+ safety
equipment continuously interrupting the power supply to the
device.

Operating Instructions XENOTEST 150 S+
- 10 -
3Installation Site Requirements
Abb. 1
3.5 Space Requirements
The device is to be set up on an adequately stable, non-
flammable floor covering and then horizontally leveled.
• Device weight: approx. 280 kg
NOTE - Ceiling load bearing capacity!
If several devices are set up in the same room, the static
load bearing capacity of the ceiling must be checked.
An adequate free space must be maintained on all sides of
the device to provide access for operating, maintenance,
and repair tasks. This are should be at least 1 m wide. Refer
to Fig. 1.
• Device dimensions: 900 x 780 x 1800 mm (W x D x H)
CAUTION - Device overheating!
Air exchange for the device is by means of air
intake and air outlet openings on the top of the
device and the air vents on the side of the
device.
Any obstruction to the air exchange will redu-
ce the device's ability to perform continuous
tests as the safety equipment will constantly
shut the device down. In addition, this constant
and frequent on/off switching will shorten the
service life of the device components.
All air openings must remain unobstructed!
• The installation are must have a minimum
ceiling height of 2.5 m.
•Side clearances must be maintained.
Please refer to Fig. 1 for the dimensions of the safety and
service clearance areas.
Fig. 1 F = Front

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Operating Instructions XENOTEST 150 S+
4.1 Front and Right View
Front view, Fig. 2:
!Keyswitch to lock the program keyboard during operation
"Operator panel with display and program keyboard
#Sample chamber door with viewport
$Sample chamber with rotating system and irradiation
unit
%Rotating system with sample carrier retainer
&Access panel to the water supply system
'Container for treated water
(Adjustable support
Abb. 2
Right view, Fig. 2:
)Main power switch to turn the device on / off
*Optional printer for outputting test documentation
+RS 232 interface for connection to a PC
,Printer output to paper strips (optional printer)
-Sample chamber door lock
.Access panel to the electrical supply unit
/Lock for the water supply system access panel
0Air inlet opening for the irradiator cooler and cooling for
the electrical components
4Device Description
Fig. 2

Operating Instructions XENOTEST 150 S+
- 12 -
4.2 Rear, Left, and Top View
Rear view, Fig. 3:
!Cover panel on the rear of the device;
"Sample chamber cooling air exhaust opening;
#Cover panel for access opening to the ignition device;
$Treated water inlet opening;
%Treated water outlet opening;
&Power supply connecting cable;
Left view, Fig. 3:
'Sample chamber cooling air inlet opening
Top view, Fig. 4:
!Irradiator cooling air exhaust opening
Fig. 3
Fig. 3 / 4
4Device Description
Fig. 4

- 13 -
Operating Instructions XENOTEST 150 S+
4.3 Sample Chamber Overview
!Misting wand to moisturize the samples.
"Xenon bulb to irradiate the material samples.
#Sample carrier to hold samples.
$Integrated sensor to measure the sample chamber tem-
perature and the relative humidity in the sample cham-
ber.
%Air guide to direct air into the sample chamber.
Fig.5
4Device Description
Fig. 5
&Sample carrier holder for sample carriers.
'Sample carousel to rotate samples around the xenon
bulb.
(Filter insert to create light at specific wavelengths.
0Exterior cylinder
/Exhaust opening to remove the heated sample chamber
air.

Operating Instructions XENOTEST 150 S+
- 14 -
4.4 Operator Panel Overview
!Main power switch LED indicator; green when the device
is switched on.
"LED warning indicator; red:
• If the program is interrupted with the STOP button;
• If the sample chamber door is opened while the device
is operating;
• If the limit value for the sample chamber temperature;
and the temperature of the exhaust air are exceeded;
• If the safety equipment shuts the device down.
#Numeric keypad to input program parameters and test
values;
$Four-digit LCD display to display operating information
and input values;
%PRINT function key to output the saved programs,
parameter measurement values, and the device status
to a paper roll;
&DATA function key to output the program coding to the
display;
Fig. 6
4Device Description
Fig. 6
'ENTER function key to confirm input values;
(ESC function key;
0Rotate function key: Used to interrupt the rotation of the
sample carrier carousel while a program is running or to
begin the rotation of the sample carrier carousel after a
program interruption (with the door closed).
/STOP function key;
.START function key;
-Keyswitch to lock the program keyboard when the device
is operating.

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Operating Instructions XENOTEST 150 S+
5.1 Program Control
The XENOTEST 150 S+ is switched on at the main power
switch "and then operated from the program controller !.
The microprocessor-supported program controller allows
both previously programmed test procedures to be called
up and user-specific tests to be designed and initialized.
The values required for the test are input via the numeric
keypad on the keyboard and then initialized with the various
function keys.
Inputs and the resulting status messages appear on the
LCD display.
The test documentation can be output to a paper roll on an
integrated printer, #.
For more detailed information regarding program control and
test procedures, refer to Chapter 6, "Commissioning", and
Chapter 7, "Operation".
Fig. 7
5Functional Description
Fig. 7

Operating Instructions XENOTEST 150 S+
- 16 -
5Functional Description
5.2 Absorption Filter System
The absorption filter system, Fig. 8, consists of:
• An IR filter lantern " with seven filter panels #arranged
around the xenon bulb !;
• The exterior cylinder $is made of special UV glass
(Suprax).
Specific spectral distributions can be obtained by
varying the optical filters.
The following describes the variations of the absorption filter
system.
A) Sunlight in the outdoors, Fig. 9:
To simulate conditions of "sunlight outdoors" (required for
the testing of the weatherfastness of textiles and leather)
one of the seven IR filters "is replaced by a UV black glass
filter! .
B) Sunlight through window glass, Fig. 10:
To simulate conditions of "sunlight through window glass"
(required for the testing of the weatherfastness of textiles
and leather) all seven IR filter panels !are placed in the IR
filter lantern.
Fig. 8/9/10
Fig. 9
Fig. 10
Fig. 8

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Operating Instructions XENOTEST 150 S+
5.2 Absorption Filter System
The chart in Fig. 11 shows the spectral energy distribution
in the wavelength range between 300 and 800 nm when
using a combination of the absorption filter system and
seven IR filters and the Suprax exterior cylinder.
5.3 Overview of the Filter Systems
5Functional Description
Fig. 11
Tab. 1
Fig. 11
0
2
4
6
8
10
12
300 350 400 450 500 550 600 650 700 750 800
Wavelength [nm]
Irradiation strength, W/(m²x nm)
7 IR-Filter
XENOTEST 150 S +
Absorption filter:
Special UV glass filter (Suprax)
IR filter, 6 items (green edge)
Black glass filter 1 item (black filter)
Exterior cylinder
Special UV glass filter (Suprax)
Absorption filter
IR filter, 7 items (green edge)

Operating Instructions XENOTEST 150 S+
- 18 -
5Functional Description
5.4 Irradiation System
The samples on the sample carousel #revolve around the
xenon bulb and the filter system and are thus irradiated, Fig.
13.
The irradiation intensity (equivalent to the irradiator output
or power) is adjusted on the basis of the filter system
employed.
•Adjustment range: 65 % bis 100 %
The XENOTEST 150 S+ offers the special function of pro-
viding rotating operation:
Withtherotation option activated, the samples ! on the sam-
ple carrier " are also rotated by 180°around their axis during
each revolution of the carousel, Fig. 12.
At the same irradiator output (given in %) the irradiation
strength at the sample level is nearly identical for synchro-
nous and rotating operation.
Fig. 12/13
Fig.13
Fig.12

- 19 -
Operating Instructions XENOTEST 150 S+
5.5 Ventilation System
The XENOTEST 150 S+ is air-cooled. The cooling system
is fed by two separate air streams:
•Irradiator cooling;
•Sample chamber cooling.
Irradiator cooling, Fig. 14:
The cooling air for the irradiator cooling is drawn in by a fan
through the vent slots #on the right side of the device.
The air stream flows through the assembly shaft on the right
side, first cooling the electronic components. The air is then
guided through the exterior cylinder "of the irradiator unit
to cool the xenon bulb.
The heated air exits through the vent openings on the top
of the device !where it is either removed by an exhaust
system or vented directly to the outside.
Sample chamber cooling, Fig. 15:
The cooling air !for sample chamber cooling is drawn in
through air inlet opening ' by the fan 0 and passed through
the air filter (.
The fresh air intake volume is regulated by the flap &, de-
pending on the sample chamber temperature setting.
The air stream is guided past the heating system .and
heated to the required temperature, after which it passes
through the humidicfication system -where it is mixed with
humidified air in accordance with the predefined values
before entering the sample chamber $through the air shaft
on the rear sample chamber wall.
The air stream is uniformly distributed over the sample
carousel #while the temperature and relative humidity are
continuously measured by the integrated sensor system ".
The used air /is exhausted through the air outlet opening
%in the front, left-hand area of the sample chamber and,
together with the cooling air for irradiator cooling, is either
removed by an exhaust system or vented directly to the
outside.
5Functional Description
Fig. 14/15
Fig. 14
Fig. 15

Operating Instructions XENOTEST 150 S+
- 20 -
5.6 Moisture and Humidifying Functions
The moisture and humidification function of the XENOTEST
150 S+ allows the samples to be tested in the sample
chamber under clearly defined climatic conditions.
•The humidification function allows the relative hu-
midityinthe sample chamber to be regulated. The
adjustment range is between 10% and 95%. The
sample chamber is humidified by means of an ae-
rosol-freeultrasonic atomizer.
•The moisture function allows the samples to be
wettedwith treated water applied withoutpressure
at cyclic intervals. Water is applied to the samples
by the misting wand (Fig. 5).
The moisture and humidification system is supplied from
a water container #inside the device.
The level in the water container is monitored by a float valve
'. A solenoid &reports a low water level to the program
controller.
A submersion pump %in the water container provides the
humidifier (with water.Amisting pump "pumps water to
the circular misting ring !to mist the samples.
The falling water is returned to the water container via a
return line 0 .
The water container can be drained through an outlet con-
nection$ .
NOTE - Fresh water supply:
If, during misting, particles are detached from the samples
but the cleanliness of the water is an important criterion for
the test, the misting and humidification system can also be
connected to an external water supply (refer to Section 3.4,
"Water Supply", on page 9).
Der Wasserrücklauf wird dann an die Kanalisation ange-
schlossen (Schwerkraftabfluss).
Instead of being recirculated, used water is then guided into
the facility's drain system (gravity drainage).
The internal water tank is continuously supplied with fresh,
treated water from an external tank or a water preparation
system.
5Functional Description
Fig. 16
Fig. 16