ULT FREEZER – USER MANUEL
Updated 19. April 2021
Chapter 4: Refrigerant Safety Precautions
Refrigerant
In the ULT Freezer there are used two type of refrigerants. The cooling system is Cascade cooling.
Carefully read the below description of the refrigerants: R290 and R1150
Demand for information: Personnel working with these refrigerants mentioned above and
below must be educated to know about these safety sheets.
Field of application:
R290 is used as refrigerant in first stage of the cooling system. R290, is refrigerant grade propane, a
natural, refrigerant suitable for use in a range of refrigeration and air conditioning applications. The
use of R290 is increasing due to its low environmental impact and excellent thermodynamic
performance. It is non-toxic with zero ODP (Ozone Depletion Potential) and very low GWP (Global
Warming Potential).
R1150 (+ R290) are used in the second stage of the cooling system.
R1150 Ethylene is refrigerant grade ethylene (ethene), a natural refrigerant suitable for use in very
low temperature refrigeration applications, such as those found in LNG liquefaction processes. R1150
is non-toxic, with zero ODP (Ozone Depletion Potential) and very low GWP (Global Warming
Potential). It is a flammable refrigerant and therefore not suitable for retrofitting existing fluorocarbon
refrigerant systems.
If needed, ask for safety data sheet from your supplier.
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