C (E3) 08/2015 page 11/93
1.6 Precautions when working with CO
2
gas
Carbon dioxide (CO
2
) in high concentrations is hazardous to health. It is colorless and almost odorless
and therefore practically imperceptible. Vent out any CO
2
gas that may escape via good room ventilation
or a suitable connection to an exhaust system. We recommend installing a CO
2
warning system.
WARNING
High concentration of CO
2
(> 4 Vol.-%).
Risk of death by suffocation.
Danger of poisoning.
∅ Do NOT set up units in non-ventilated recesses
Ensure technical ventilation measures
Observe the relevant regulations for handling CO
2
.
1.7 Precautions when handling gas cylinders
General information for safe handling of gas cylinders:
• Store and use gas cylinders only in well-ventilated locations.
• Open the gas cylinder valve slowly to avoid pressure surges
• Secure gas cylinders during storage and use against falling (chaining).
• Transport gas cylinders with a cylinder cart, do not carry, roll, or throw them.
• Always close the valve even with apparently empty c
ylinders; screw on the cap when not in
use. Return gas cylinders with the valve closed.
• Do not open gas cylinders by force. Mark them when damaged
• Protect gas cylinders against fire, e.g. do not store together with flammable liquids
• Observe relevant regulations for dealing with gas cylinders.
Secure the gas cylinders against falling and other mechanical damage.
WARNING
Safety valve tearing off.
Sudden release of the stored pressure energy.
Risk of injury.
Secure gas cylinders against falling (chaining).
Transport gas cylinders with a cylinder cart.
The valve of the gas cylinder always must be closed before screwing on or unscrewing the gas hose.
WARNING
Opening the cylinder valve when the cylinder is not connected.
Sudden release of the stored pressure energy.
Risk of injury.
Close the gas cylinder valve before connecting or removing the gas hose.
After connecting the gas cylinder, check all gas connections for leaks (e.g. with leak spray or
diluted soap solution).