CHAPTER 1
LIQUID OXYGEN CONVERTER
TEST STAND 59A120
The PRs perform an enormous amount of
testing of oxygen components. Although lower
rated personnel perform much of this work, the
responsibility for maintaining liquid oxygen
converter test stands in top running condition is
that of the senior PR. Knowing the functions,
daily inspections, and adjustments required to
maintain such equipment is essential for the lower
rated PRs. This information can be found in the
Aircrew Survival Equipmentman 3 & 2, Vol 2.
However, determining the causes of malfunctions,
making major adjustments, and replacing parts
are the responsibilities of the First Class and Chief
Petty Officer.
This chapter covers the 59A120 Liquid Oxygen
Converter test stand shown in figure 1-1.
THE 59A120 TEST
The 59A120 is designed
oxygen converters and rigid
S T A ND
to test all liquid
seat survival kits
(RSSK) components used-in today’s naval air-
craft. All instruments, mechanisms, and equip-
ment of the test stand are designed to meet
certain criteria. They are designed to meet this
criteria even when subjected to the normal pitch
.
and roll of a ship.
The test stand is comprised of a differential
pressure gage; three pressure gages; four linear
flow elements; a liquid oxygen quantity gage
capacitor-type tester; a flowmeter indicator; a bell
jar; a heat exchanger; and the necessary integral
piping, wiring, hoses, and valves to properly test
oxygen components.
T h e p e r f o r m a n c e a nd
technical characteristics of the test stand are
shown in table 1-1.
The 59A120 test stand tests liquid oxygen
converters, components, and RSSK components
for leaks, flow settings, and quantity gaging.
This test stand is designed to test liquid oxygen
converter components and accessories to make
sure they work properly. The test stand is used
to perform periodic preventive maintenance, tests,
and adjustments.
PREPARATION FOR USE
Preparing the test stand for use is divided
into five separate tasks to be done by the PR or
by the on-site metrology calibration team (CAL
TEAM). The five tasks and responsible personnel
are as follows:
1.
2.
3.
4.
5.
Installation—PR
Visual Inspection—PR
Correction card preparation-CAL TEAM
Leakage testing—PR
Calibration—CAL TEAM
Procedures for installation, visual inspec-
t i o n s , a n d l e a k a g e t e s t i n g o f t h e 5 9 A 1 20
are done following NAVAIR 13-1-6.4. Pro-
cedures for leakage testing are discussed in
t h i s c h a p t e r ; h o w e v e r , t h e y a r e n o t t o be
u s e d i n p l a c e o f t h e a f o r e s a i d N A V A IR
manual.
PERIODIC INSPECTIONS
O n e o f t h e k e y s t o a t r o u b l e - f r e e t e st
stand is the performance of periodic inspec-
tions on the test stand. By performing the
periodic inspections on time, you find trouble-
s o m e a r e a s b e f o r e t h e y b e c o m e p r o b l e m s.
1-1
