12
Operating Instructions Xenotest
®
150 S+
3.1 Room climate
Climatic requirements of the location:
During continuous operation, the heat emitted from the lamp cooling causes a con-
stant change of the room climate. Therefore, the instrument must be installed only in
a sufficiently ventilated, dust-free room.
• Room temperature: between 18 °C and 25 °C
• Relative humidity: 50 % (+/- 10 %)
3.2 Room ventilation
The room where the instrument is installed must be equipped with an air recirculation
system with a capacity that ensures an inflow air volume of at least 300 m³/h.
The inflow air must be cleaned using a filter of filter class EU 4.
The laboratory room must be kept free from dust
3.3 Instrument exhaust air system
The lamp cooling of the Xenotest
®
150 S+ must be connected to an exhaust air sys-
tem. The lamp cooling exhaust air can be routed directly into the open if the exhaust
air system complies with the following:
• The exhaust air duct must be made of flexible, heat-resistant material since the
exhaust air temperature can rise up to 120 °C.
• The length of the exhaust air duct must not exceed 3 m.
• The exhaust air duct must have a minimum diameter of 100 mm. The connec-
ting sleeve at the Xenotest
®
150 S+ has a diameter of 100 mm.
• The exhaust duct must not have more than two 90° elbows.
• If an exhaust duct length of more than 3 m or more than two 90° elbows are re-
quired, an on-site exhaust air blower must be installed.
• The design of the exhaust air system must ensure that back-pressure air can-
not be blown into the instrument
The exhaust air from the test chamber can be routed into the room where the instru-
ment is located and recirculated by the room ventilation system.
NOTE - Function impairment:
If the maximum length of the exhaust air duct and the permitted
number of 90° elbows (max 2) are exceeded, the instrument ex-
haust air system may overheat. In this case, the safety instru-
ments of the Xenotest
®
150 S+ will interrupt the power supply of
the instrument permanently.
3 Location requirements
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