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17
7. Operation
WARNING: Probe tip reaches extremely low temperature
in use.
Freeze/Defrost Cycles
Freezing of the Cryo probe is controlled manually by the
operator using the footswitch.
1
Press the footswitch down. Freezing starts immediately
and the digital timer will increment.
2
An audible warning sounds every second during the
freeze cycle and the Freezing Symbol is displayed.
3
In addition there is a graphical indication of probe
performance.
4
De-frosting is achieved by releasing the footswitch. The
timer will stop counting and the Defrosting Symbol is
displayed.
5
Subsequent freeze cycles can be carried out by simply
repeating steps 1-4 as soon as the Ready Symbol is
displayed.
The freezing function is often accompanied by a characteristic
‘pulsing’ sound which indicates that the Cryomatic MKII is
regulating the gas to the optimum pressure for the probe.
The ‘pulsing’ may vary or cease completely depending on the
pressure of gas in the cylinder.
If the probe performance drops below 100% permanently check the
cylinder gas pressure or suspect a blocked probe.
Cryo Probe Disconnection
Do not disconnect the probe while the unit is under
pressure (Footswitch activated)
1
Rotate the collar on the probe coupling (counter
clockwise) until it aligns with the release button.
2
Press release button firmly whilst aligned with collar.
3
Refit the sterilisation cap to the probe.
The system shuts off the gas supply immediately the Cryo probe
is disconnected. It is not recommended that the Cryo probe is
disconnected during use.
2
1
