Cryogenic Container; Removal - CAIRE COMPANION 1000 Technical Manual

Companion 1000/T Liquid Oxygen System Technical Manual
5.14

CRYOGENIC CONTAINER

5.14.1
B-701964-00 Rev. C
• Verify that the O-ring seal between the manifold and the container does not have
any nicks, scratches, or tears. Also, check to see that the O-ring is not flat-spotted.
Replace as necessary.
• When installing the manifold, position the vacuum port of the bottle between the
secondary relief valve and warming coil ports on the manifold.
• It is very important that the standoffs in the manifold assembly be torqued down
properly (Figure 5-31).
1. Use the specified in.-lb. torque wrench to torque the standoffs to 10 in.-lb. (115 N-
cm) in an alternating sequence (Figure 5-31).
2. Follow up by torquing the standoffs to 22 in.-lb. (253 N-cm) in an alternating
sequence.
• Do not overtighten the tube nuts of a compression fitting. Over-tightening may
result in a cracked fitting. Only a slight increase in torque is required to seal a
compression fitting that has already been made up. When making up a new fitting,
3
tighten / turn from finger-tight for
4
1
/ -in. tubing.
4
• Before installing the side covers, pressurize the system with gaseous oxygen and test
for leaks according to the Leak Test section (Section 3.2).
The Companion 1000/T Portable cryogenic container is a stainless steel, double-walled,
vacuum-insulated container that holds liquid oxygen. The container's main function is
to limit the amount of heat that leaks into the container from the surrounding
atmosphere. The container is not field serviceable.

Removal

Refer to Figures 6-1 or 6-2, 6-7, and 6-8 to identify parts with bold number references.
1. Remove the manifold 7 (Section 5.13.1).
5
2. Use a / -in. open-end wrench on the vent valve body hex flats to hold the body
8
2
4
1
Figure 5-31: Torquing the Standoffs
3
/ -in. tubing; 1
16
3
1
/ turns from finger-tight for
4
Service and Repair 5-23