General safety references
DANGERR744 is an odourless and colourless gas and cannot be perceived directly in case of emission!
Lost of consciousness and danger of suffocation by inhaling higher concentrations!
Avoid R744 emission and uncontrolled deflating, particularly in closed rooms!
Aerate closed machine rooms!
Make sure that the safety regulations in accordance with EN378 are complied with!
DANGERObserve the high pressure levels of the refrigerant R744!
At standstill the pressure in the system will rise and there is a risk of bursting!
Install pressure relief valves on the compressor and on the suction and high-pressure sides in system sections that are lockable from both sides.
Requirements and design according to EN378-2 and EN13136.
Critical temperature 30,98°C corresponds to 73.77 bar (Pressure and saturated vapour temperature table for R744) or see BITZER RefRuler App.
DANGER
Liquid R744 evaporates quickly, cools down at the same time and forms dry ice!
Danger of cold burns and frost bites!
Avoid uncontrolled deflating of R744!
When filling the system with R744, wear gloves and goggles!
Risk of insufficient lubrication due to high R744 solubility in the oil.
Operation at low pressure ratios and low suction gas superheat results in low discharge gas and oil temperature.
Continuous operation with frequencies > 60 Hz intensifies this effect and should therefore be avoided.
If necessary, consult with BITZER.
Oil foam formation and therefore insufficient lubrication!
Avoid strong pressure reduction in the crankcase during the compressor start and during operation!