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13
6. Installation and commissioning
Connection of Cylinder
1
Secure gas cylinder correctly in the upright position.
2
Connect the high pressure hose to the cylinder using the
relevant adaptor.
3
Open cylinder valve slowly (using the adjustable wrench
provided).
4
Any noise of escaping gas indicates that the cylinder has
not been connected correctly – turn off the gas valve
and check connections.
5
Ensure the maximum cylinder pressure does not exceed
1200 PSI/83 Bar.
Keeler recommends fitting a regulator, set below 83bar,
between the cylinder and the Cryomatic MKII console to prevent
overpressure due to temperature variations in the cylinder.
Removal/Disconnection of Cylinders
1
Ensure that cylinder valve is closed.
2
Disconnect the adaptor from the cylinder.
3
Replace cylinder with a fresh one.
The cylinders must be medical grade vapour withdrawal types to
ensure that liquid cryogen is not delivered to the system.
Cryogen gas cylinders used must meet national regulations and
be in accordance with ISO/R 32 and NFPA 99 (USA).
Ensure there is enough gas in the cylinder prior to starting the
procedure. The console cylinder symbol flashes to indicate empty
when the gas supply pressure drops below 450 PSI/31 Bar (2415
kPa) and the gas cylinder should be replaced at or before this
point. After this the system will continue to function in the
usual way, however freeze performance will be reduced.
Information regarding the correct storage and handling of gas
cylinders should be obtained from the gas supplier.
