Thermo Scientific 8920 Operating Manual page 43

Section 6
Specifications
Certifications
Declaration of Conformity is available from the factory
Safety Specifications
Indoor Use Only
Altitude - up to 2,000 meters
Temperature - 5°C to 43°C
Humidity - Maximum RH 80% for temperatures up to 31°C, decreasing linearly to 50% RH at 40°C
Mains Supply Fluctuations - Mains supply voltage fluctuations not to exceed ±10% of the nominal voltage
Installation Category II
Pollution Degree 2
Class of Equipment I
Intended Use
This product is intended for use as a General Purpose Laboratory Freezer for storing samples or inventory between -40 and -86C.
This unit is not intended for use in an explosive environment, nor to be used for the storage of flammable inventory. This unit is
not intended for use in a Class II medical application as defined by Title 21 of the Federal Code of Regulations.
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1 Installation category (overvoltage category) defines the level of transient overvoltage which the instrument is designed to withstand safely. It depends
on the nature of the electricity supply and its overvoltage protection means. For example, in CAT II which is the category used for instruments in
installations supplied from a supply comparable to public mains such as hospital and research laboratories and most industrial laboratories, the expected
transient overvoltage is 2500V for a 230V supply and 1500V for a 120V supply.
2
Pollution degree describes the amount of conductive pollution present in the operating environment. Pollution degree 2 assumes that normally only
non-conductive pollution such as dust occurs with the exception of occasional conductivity caused by condensation.
6-4 Revco ExF
1
2
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