7
ENVIRONMENTAL CONDITIONS
This equipment is designed to be safe at least under the following conditions (based on the IEC61010-1):
■ Indoor use;
■ Altitude up to 2000 m;
■ Ambient temperature 5
o
C to 40
o
C;
■ Maximum relative humidity 80 % for temperature up to 31
o
C decreasing linearly to 50 % relative
humidity at 40
o
C;
■ Mains supply voltage fluctuations up to ±10 % of the nominal voltage;
■ Transient overvoltages up to the levels of OVERVOLTAGE CATEGORY II;
■ Temporary OVERVOLTAGES occurring on the mains supply;
■ Applicable pollution degree of the intended environment (POLUTION DEGREE 2 in most cases)
SYMBOLS ON UNIT
The symbols are attached to the ultra-low temperature freezer. The following table describes the
symbols.
This symbol indicates an earth.
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