TM 9-4120-370-14
TO 35E9-229-1
5-13. REFRIGERANT PRESSURE CHECK - Continued.
Pressure Range (psig)
Temperatures
100F (38C)
120F (49C)
75F (24C)
50F (10C)
Outdoor ambient
75-90
55-65
90F (32C) Return
59-70
60-75
Air to Unit
Suction
Suction
Suction
Suction
(Dry Bulb)
125-160
175-210
255-295
370-410
Discharge
Discharge
Discharge
Discharge
60-75
58-65
80F (27C) Return
58-70
65-75
Air to Unit
Suction
Suction
Suction
Suction
(Dry Bulb)
120-155
170-205
250-290
370-410
Discharge
Discharge
Discharge
Discharge
Preliminary procedure:
Remove lower front panel. (See para 4-25.)
NOTE
The dehydrator must be replaced each time the refrigeration system has been opened.
It should be installed just before unit is leak tested.
Inspection
a.
(1) Check for general condition and signs of leakage. If leakage is suspected, leak test per paragraph 5-10.
(2) Check that mounting clamp is secure.
Removal
b.
(1) Discharge the refrigerant system per paragraph 5-7.
(2) Using wrench, loosen and disconnect flare nuts.
(3) Using screwdriver, remove screw, flat washer, nut and clamp.
(4) Remove dehydrator. Note direction of flow arrow for installation.
