Rp25 Cryogenic Container Rr - CAIRE Companion C1000 Technical & Service Manual

XI
Troubleshooting & Repair Procedures
Figure 30: Manifold Torque Sequence
12) Follow up by torquing the standoffs to 22 in-lb (253 N-cm) in
an alternating sequence.
NOTE: 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.
NOTE: When installing the manifold, position the vacuum port
of the bottle between the secondary relief valve and warming coil
ports on the manifold.
NOTE: Do not overtighten the tube nuts of a compression fitting.
Over-tightening may result in a cracked fitting. Only a slight in-
crease in torque is required to seal a compression fitting that has
already been made up. When making up a new fitting, tighten 3/4
turn from finger-tight for 3/16inch tubing; 11/4 turns from finger-
tight for 1/4inch tubing.
NOTE: Before installing the side covers, pressurize the system
with gaseous oxygen and test for leaks according to the Leak Test
(RP2).
RP25 – Cryogenic Container RR
1) Remove the manifold (RP24).
2) Use a 5/8inch open-end wrench on the vent valve body hex
flats to hold the body stationary. Use an 11/16inch open-end
wrench to loosen the jam nut that holds the vent valve to the
mounting bracket. Remove the vent valve and tube assembly
from the mounting bracket.
3) Use side-cut pliers to cut the wire tie from the warming coil.
4) Use a 7/8inch open-end wrench to loosen the jam nut (some
earlier models may have a 5/8inch jam nut) that retains the
female adapter to the mounting bracket. Remove the female
fill connector and tube assembly from the mounting bracket.
5) Install the cryogenic container by reversing steps 1-4.
NOTE: To prevent contaminants from entering the cryogenic con-
tainer, place the container in a clean plastic bag and seal tightly.
Companion Portable Technical Service Manual • PN 20562220 Rev B
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