Planer Kryo360-1.7, Руководство оператора

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20 Liquidus Tracker
minutes, the pressure will rise to 5 psi and the light will switch off. The dewar should remain
pressurised until almost empty.
Warning
Before rectifying any leaks, or to shutdown the system, switch off the system, disconnect the
mains supply at the wall socket, open the red pressure-relief valve and wait for the flow of gas to
stop.
4. Check for liquid and gas leaks.
2.1.5 Removing the pump
You will need to remove the pump whenever the dewar needs to be refilled.
Warning
Never remove a pump from a dewar until the pressure gauge reading has fallen to 0 psi.
Wear protective clothing, including cryogloves, goggles, boots and a protective apron.
1. Switch off the system.
2. Disconnect the mains supply at the wall socket.
3. Open the red pressure-relief valve. Cold gas will issue from the valve.
4. Wait until the pressure on the gauge has fallen to zero and the flow of gas has stopped.
5. Disconnect the pump from its power supply unit.
6. Press firmly on the upper surface of the pump, then remove the spring clips from the handles on
the dewar. To prevent jamming only remove one spring at a time from each side.
7. Lift the pump carefully, but firmly, out of the neck of the dewar using a slight twisting and rocking
action.
Warning
The end of the pump may be cold enough to cause frostbite
8. Place the pump in a safe position on its side or suspended vertically.
9. Remove frost using a hot-air gun.
Note
Do not overheat as the plastic parts or thermal cut-out may be damaged.
10.When the pump has attained ambient temperature, dry any condensation with absorbent tissue
to prevent ice from blocking the filter when the pump is refitted.