Companion 1000/T Liquid Oxygen System Technical Manual
5-20
Service and Repair
B-701964-00 Rev. C
Figure 5-29
5.11.2
Installation
Install the warming coil by reversing the removal procedure (Section 5.11.1)
5.12
WARMING COILS (COMPANION T)
The warming coil on the Companion T is a heat exchanger that transfers heat from the
surrounding atmosphere to the liquid and gaseous oxygen inside the coil. The purpose
of the Companion T warming coil is to vaporize the liquid oxygen and warm the
resulting gaseous oxygen entering the breathing circuitry. The Companion T warming
coil consists of three parts: warming coil part 1, warming coil part 2, and the spined
tube heat exchanger. The warming coil used on the Companion T has more capacity
than the warming coil used on the Companion 1000 and accounts for the increased
maximum flow capability of the Companion T.
5.12.1
Warming Coil Part 1 Removal
Refer to Figure 6-2 to identify parts with bold number references.
1. Remove the side covers according to the side cover removal procedure (Section
5.2.1).
2. Use side-cut pliers to cut the wire tie
22
from the warming coil
32
.
3. Use a
1
/
2
-in. open-end wrench to disconnect the
3
/
16
-in. tube nuts
27
where the
warming coil connects to the two brass tees
36
. Remove the warming coil.
•
Be sure to replace the wire ties after reinstalling the warming coil. The wire ties hold
the warming coil away from any moisture that may accumulate in the moisture pad
at the bottom of the unit.
•
Do not overtighten the tube nuts on the warming coil. Overtightening 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, three-quarters
of a turn from finger-tight is required for
3
/
16
-in. tubing.
Summary of Contents for COMPANION 1000
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