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 TM 5-4110-217-14
1.
28.
Tube
55.
Tube
2.
Bolt
29.
Elbow
56.
Valve, receiver inlet
3.
Washer, lock
30.
Tube
57.
Receiver
4.
Switch, high-pressure control
31.
Elbow
58
Valve, receiver outlet
5.
Screw
32.
Vibration Eliminator
59.
Plug, fusible
6.
Washer
33.
Nipple
60.
Tube
7.
Tube
34.
Tee
61.
Thermometer
8.
Fitting, "U" Bend
35.
Nipple
62.
Gage, high pressure
9.
Nipple
36.
Valve, pressure control (hot-gas regulator)
63.
Gage, Compound Pressure
10.
Vibration Eliminator
37.
Reducer
64.
Screw
11.
Elbow
38.
Tube
65.
Washer
12.
Tube
39.
Elbow
66.
Nut
13.
Valve, hold back
40.
Tube
67.
Tube
14.
Tube
41.
Elbow
68.
Fitting
15.
Clamp
42.
Tube
69.
Clamp
16.
Elbow
43.
Elbow
70.
Clamp
17.
Accumulator
44.
Tube
71.
Screw
18.
Washer, lock
45.
72.
Washer, lock
19.
Nut, hex
46.
Screw
73.
Nut
20.
Elbow
47.
Washer
74.
Bracket
21.
Washer
48.
Elbow
75.
Bracket
22.
Elbow
49.
Tube
76.
Rivet
23.
Tube
50.
Elbow
77.
Tee
24.
Elbow
51.
Tube
78.
Clamp
25.
Elbow
52.
Elbow
79.
Screw
26.
Tube
53.
Tube.
27.
Elbow
54.
Elbow
Figure 6-2 - Continued
Section IV. DEHYDRATOR
replacement dehydrator should be installed as soon as
6-16.
General.
possible.
b. Removal.
a. The dehydrator is a cylindrical vessel attached
(1) Refer to paragraph 6-1 and pump down
by a clamp on the refrigeration panel assembly. The
the refrigeration system. Close the dehydrator valves
body of the dehydrator contains activated alumina, a
and the receiver valve.
material which removes moistures from the refrigerant by
(2) Disconnect flare nuts at dehydrator (95)
absorption. A filter in the inlet end of the dehydrator
inlet and outlet
prevents activated alumina and other material from
(3) Loosen nut (68) and washer (67) on
entering other parts of the refrigeration system. If the
dehydrator mounting clamp (66) and remove dehydrator
dehydrator is removed for any purpose, it should never
(95)
be replaced with a unit smaller than the original.
c. Installation.
b. A three-valve by-pass, makes it possible to by-
NOTE
pass the dehydrator or change the dehydrator without
Always Install a new dehydrator when
pumping down the system.
one has been removed
6-17.
Dehydrator.
(1) Install dehydrator (95) in clamp (66) as in
original configuration and tighten washer (67) with nut
a. Emergency Operation (fig. 6-3).
If the
(68).
dehydrator is plugged by dirt, oil, or saturated with
(2) Tighten inlet nut but leave outlet nut off.
moisture, the unit may be operated until a replacement
Open receiver outlet valve (58, fig. 6-2) slightly
dehydrator is available. To operate, close valves (90A)
to purge line; then tighten outlet nut.
and (90B), and open bypass valve (90C) below
(3) Refer to paragraph 6-9 and test for leaks
dehydrator but do not remove dehydrator. This will allow
before operating unit.
the refrigerant to flow direct from the receiver outlet valve
(4) If unit was operated by bypassing
(58, fig. 6-2) to the expansion valve (27), bypassing the
dehydrator, be sure that bypass valve (90C) is closed
dehydrator
(95).
A
and valves (90A and 90B) are open.
6-9
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