DEHAS EASYMATE RESERVOIR PM2300CE Serie Mode D'emploi page 29

NOTE: •
It may be necessary to open the source tank liquid valve completely and
partially close the Reservoir vent valve to maintain the proper pressure
throughout the fill.
•
As the level of liquid oxygen nears the top of the Reservoir inner container,
the sound and appearance of vapors escaping through the Vent Valve will
change. The vapor will become denser, and as liquid oxygen reaches the Vent
Valve, a discharge of liquid oxygen will be visible and audible.
Extreme cold hazard. Liquid oxygen discharge from the Fill Connector can occur.
When disconnecting the transfer line, never stand directly over the Reservoir Fill
Connector. If the Reservoir Fill Connector stays open and minor liquid oxygen
discharge occurs, carefully engage and disengage the transfer line to help dislodge
any ice or other obstruction. If major liquid oxygen discharge (steady stream)
occurs, open the Vent Valve (if safely possible) to vent pressure and stop the release
of liquid oxygen. Open windows and doors to ventilate the room and do not walk on
areas exposed to liquid oxygen for 60 minutes after frost disappears.
9. When you observe the first steady discharge (greater than 1 second) of liquid oxygen
from the Vent Valve, close the Vent Valve and disconnect the transfer line from the
Reservoir by lifting the fill adapter straight up. If the transfer line will not disengage
close the liquid valve on the source tank and allow the transfer line and fill connectors
to thaw.
If the Vent Valve freezes in the open position, terminate the fill by disconnecting the
transfer line and then allow the vent valve to warm until it closes easily. If the vent
valve remains open for a period of time, the liquid oxygen in the unit will de-saturate
to a pressure lower than required.
10. Close the source tank liquid valve when the frost melts from the transfer line
assembly.
e) Post-Fill Inspection
Perform the following procedure to inspect the Reservoir and determine its operational
status after filling it with liquid oxygen. Correct observed problems before placing the unit
in service.
1. Verify that the Reservoir Fill Connector is closed and not leaking.
2. Verify that the Vent Valve is completely closed and not leaking.
3. Verify that the pressure gauge attached to the Reservoir Oxygen DISS Outlet
Connection reads equal or greater than 20 psig (1.38 bar) within five minutes
terminating the fill.
4. Verify that there is no frost or heavy condensation on the container below the
shroud.
5. Verify that all lights are illuminated when the liquid level Indicator button is activated.
6. Disconnect the pressure gauge from the Reservoir Oxygen DISS Outlet Connection.
f) Checking Saturation Pressure
Perform the following procedure as needed to determine the saturation pressure of the
liquid oxygen in the Reservoir.
1. Attach a 0 - 30 psig, (0 - 2.07 bar) pressure gauge to the Reservoir Oxygen DISS
Outlet Connection. Note the pressure indicated on the gauge.
2. Momentarily open the Vent Valve on the Reservoir and observe the pressure
pointer as it drops.
3. Note the pressure value where the gauge drops the lowest and then close the Vent
Valve. This is the approximate saturation pressure of the Reservoir.
Saturation pressure readings between 18 and 26 psig (1.24 - 1.79 bar) are in the
acceptable pressure range of the unit.
WARNING
CAUTION
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after
plastic
gauge