Do not use excessive force or any form of wrench to open the valve. If the valve spindle
will not move, this will indicate that the valve operating mechanism has been damaged.
The cylinder must then be labelled to indicate the fault and returned to the supplier.
Equipment
Ensure the equipment coupled to the cylinder has the correct thread.
All installed ancillary equipment, such as valves, piping, hoses or other fittings, coupled
directly to a cylinder must be leak tight and designed and constructed for high pressure
CO2 use. Any equipment which is of doubtful design or origin must not be employed.
Operation
Turn off the cylinder valve when CO2 is not required.
Operating instructions should be clearly laid down and displayed in the working area
concerned with the cylinder installation and associated equipment. Reference must be
made to the detailed equipment data and instructions available from suppliers when
operating instructions are prepared.
Safety Considerations
Pipework shall have safety devices to protect against pressure rises above its design
pressure. In any system where there is a possibility of other materials or products
returning to the cylinder, causing contamination and possible corrosion, a non return
valve must be fitted.
Heaters may be used to prevent ice formation inside regulators.
No attempt should be made to seal any leaks until the equipment concerned has been
depressurised.
When the cylinder has been emptied, the valve should be closed, leaving a small positive
pressure in the cylinder to prevent contamination and internal corrosion. Some cylinders
are fitted with residual pressure devices. These maintain a small positive pressure within
the cylinder at all times.
After Use
After use, ensure that the pressure in the equipment has been released before the
cylinder is disconnected. Return the empty cylinder to the supplier as soon as possible.
DRY ICE/CARBON DIOXIDE CYLINDERS - Safe Use & Storage
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