(h) If no leakage is detected by either check, permit
to check for residual refrigerant gas in bottom of air-tight
box. If any is detected, blow out with compressed air
refrigerant gas and nitrogen to. escape from receiver.
and recheck with leak detector. When no refrigerant gas
(i) If leakage is detected, find approximate area of leak
remains, seal charged and pressurized receiver inside
with leak detector. Use detergent to find exact location,
air-tight box so that no refrigerant gas can escape.
wipe detergent from receiver, and eliminate
(g) After 30 minutes, remove tape, insert leak
leakage, using methods outlined (para c ) above, then
detector probe, and check for any refrigerant gas that
repeat leak detection procedure.
has leaked from receiver and settled to bottom of air-
tight box. Remove receiver from air-tight box.
(1) Position receiver (180, fig. 6-1, sheet 6 of
6) on mount and secure using clamps (179). Replace
Remove receiver from test area if
(2) Install tube assemblies.
there is a possibility that escaping
refrigerant gas may affect other
tests in area.
Section IV. MOTOR DRIVEN TUBE AXIAL FAN (Recirculating)
(1) Disassemble according to sequence of item
numbers I through 30 assigned to figure 6-7 observing
This motor driven fan essentially consists of a cylindrical
housing assembly, a motor rotor, two end bell
(2) Do not remove plates (2, 3) or label (4)
assemblies, a fan impeller, and a thermal protector.
unless required after inspection.
The housing assembly includes a motor stator. The fan
(3) Unsolder wires for connector (5). Do not cut
is used to circulate the flow of air through the
a. Removal. Refer to TM 5-6115-586-12 for
recirculating fans removal instructions.