CAIRE COMPANION 1000 Technical Manual page 22

1-12 Introduction
Extreme cold hazard. Do not leave the Companion 1000/T
unattended during the filling operation. Excessive liquid
oxygen discharge can occur.
During the filling operation, maintain a slight downward pressure on the
Companion 1000/T with one hand to ensure stability and proper filling
position. Approximately 20-30 seconds into the fill, close and reopen the vent
valve one or more times to prevent the vent valve from freezing open.
8. When you notice a change in the sound of the venting gas, followed by the emission
of a dense, white vapor around the Stationary shroud, close the vent valve. Fill
times may vary according to the temperature of the container before filling and the
Stationary pressure. Maximum fill time is approximately 1 3/4 minutes.
CAUTION:
If the vent valve fails to close and the hissing continues, remove the
Companion 1000/T by pressing the release button on the Stationary
(Figure 1-10). Keep the Companion 1000/T in an upright position. The
unit will stop venting in a few minutes. Allow the unit to warm until
you can close the vent valve. It may require as much as two to three
hours with the flow control off for the Companion 1000/T to restore
adequate pressure for accurate oxygen delivery.
Extreme cold hazard. Liquid oxygen discharge from the fill
connector can occur. When disconnecting the Companion
1000/T, never stand directly over the Stationary fill connector.
If the Stationary fill connector stays open and minor liquid
oxygen discharge occurs, carefully re-engage and disengage
the Companion 1000/T to help dislodge any ice or other
obstruction. If major liquid oxygen discharge (steady stream)
occurs, open the reservoir vent valve (if safely possible) to
vent pressure and stop the release of liquid oxygen. Open
windows and doors to ventilate the room. Do not walk on
areas exposed to liquid oxygen for 60 minutes after frost
disappears.
9. Disengage the Companion 1000/T from the Stationary by holding the carrying
strap above the unit and pressing the release button (Figure 1-10). Always hold the
Companion 1000/T with one hand when attempting to disengage it. Should the
units not disengage easily, they may be frozen together. Do not use force. Allow a
few moments for the frozen parts to warm. Disengage the units after the ice has
melted.
10. Check the liquid oxygen contents indicator. The amount of liquid oxygen in the
Companion 1000/T is measured by an internal scale on top of the unit. Actuate the
scale by lifting the unit by the strap nearest the indicator. The color-coded gauge
indicates the liquid level (Figure 1-11).
Disengage the plastic buckle in the carrying strap before checking liquid
oxygen contents level.
Companion 1000/T Liquid Oxygen System Technical Manual
WARNING
WARNING
B-701964-00 Rev. C