Froilabo BM 3E Essential, Руководство пользователя

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Original manual – Iss. 0.1 User manual – BM 3E Freezer 42/ 44
13. SAFETY
13.1 Liquid CO
2
backup
PRECAUTIONS FOR THE USE OF CO
2
Properties of CO
2
Does not sustain life or combustion.
Present in low concentrations (0.03%) in air.
Makes the atmosphere unbreathable at concentrations exceeding 3%.
Accelerates respiratory rate, induces faintness, vomiting, coma or
even death.
Heavier than air (d=1.53).
Non-flammable, colourless gas with a slightly acidic odour at high concentrations.
When liquid CO
2
is released at atmospheric pressure, carbon dioxide snow is generated at a temperature of –80°C.
Ensuing risks:
Risk of asphyxiation. Loss of consciousness occurs when concentration exceeds 8 to 10%.
CO
2
builds up in low areas.
Risk of frostbite.
Risk of corrosion of steels in the presence of humidity.
Essential precautions to be taken
Areas where CO
2
is stored or used must be well ventilated (extraction or ventilation at both high and low levels in the
room).
Areas liable to contain an unbreathable atmosphere must be indicated with a CO
2
– risk of asphyxiation hazard
pictogram.
Never enter a room that has contained CO
2
without taking predefined precautionary measures.
Eliminate links between areas where CO
2
is stored or used and low points (pits, drainage channels, basements) where
it could accumulate and render the atmosphere unbreathable.
Use a CO
2
concentration detector (or O
2
concentration detector) to check that the CO
2
concentration is less than 0.5%
(as recommended by INRS, the French National Research and Safety Institute).
In the event of an incident or accident
If asphyxiation has occurred
Check the oxygen concentration in the room and then take the victim to the open air (taking an insufflator with you).
Begin artificial respiration and call the emergency services.
In the event of a leak
Do not enter the room without breathing apparatus if the carbon dioxide concentration is higher than 3%.
Close the valve on the cylinder.
Air the room at length, ensuring that low points are ventilated.
PRECAUTIONS WITH REGARD TO EQUIPMENT
Warning: cylinders are pressurised!
Handle cylinders with care.
Secure cylinders in place.
Do not expose cylinders to excessive temperatures.
Treat valves with care (operate gently, do not dismantle or lubricate valves).
Ensure that hoses and pressure regulators are fit for use. Check the condition of gaskets and use original parts only.
Before installing the pressure regulating valve, open the valve briefly to expel dust (do not stand in front of the valve
outlet at this time).
Never transfer gas from one cylinder to another.
Never lay a cylinder on its side during use.
After use:
Close the valve carefully.
Drain the outlet circuit.
Loosen the adjustment screw on the pressure regulating valve.
Close the valve on the receiving equipment.
Regulations apply to the transportation of cylinders.
Frames must be handled with care in the same way as cylinders.
Users of the equipment, who are fully aware of the conditions of use and thus best placed to monitor the equipment,
are solely responsible for proper use.