Figure 6-4. Refrigerant leakage test setup.
c. Installation.
(g) After 30 minutes, remove tape, insert
leak detector probe, and check for any refrigerant that
has leaked from evaporator and settled to bottom of air-
sheet 4 of 6) and evaporators (147) in the power plant
tight box. Remove evaporator from air-tight box.
and secure it to the same using bolts (144) and washers
(h) If no leakage is detected, permit
(145).
refrigerant and nitrogen to escape from evaporator.
Note.
Observe cleaning, inspection and repair
instructions for tube assemblies given in paragraph 6-2b.
(i) If leakage is detected, release refrigerant
Also, use new rubber strips each time evaporator is replaced.
and nitrogen from evaporator and replace faulty
(2) Install the tube assemblies.
evaporator with a known good one.
Section III. RECEIVERS
(2) Disassemble in sequence of index numbers I
6-7. General
through 20 assigned to figure 6-5, observing the
The receivers are mounted in the refrigerant
following.
compartment.
The receivers discharge refrigerant
(3) Do not remove inserts (8) from cap (10)
received from the condensers.
unless required after inspection.
a. Removal.
c. Cleaning, Inspection and Repair.
(1) Disconnect tube assemblies that directly
(1) Wipe all parts, except receiver (20), with a
connect to the receiver.
clean, dry cloth.
(2) Remove clamps (179, fig. 6-1,sheet 6 of 6 )
(2) Thoroughly wash interior and exterior of
to remove the receiver (180). Remove the screen
receiver (20) with kerosene and drain. Degrease with
b. Disassembly (fig. 6-5).
trichlorethylene heated to 160 to 180F (71.1to 82.2
(1) Before proceeding with disassembly,
complete pressure test, and refrigerant leakage test
C).
para e) below.
Warning: Trichlorethylene (MIL-T70031 is toxic,
and should be used only in a well
6-16