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TM 5-4120-339-14
TO 35E9-253-1
(1) Installation.
CAUTION
Use care in applying high vacuum grease to the flare fitting of the pressure control
switch so that none of the material gets inside the refrigerant system.
(a) Apply high vacuum grease (National Stock Number 9150-00-965-2408) or equivalent to the threads
of the flare fitting which secures the pressure control switch.
(b) (Model TM-9KV-208-3-60 only) Install the pressure control switch in the position shown in figure 4-6.
Tighten the flare nut securely.
(c) (Model F9000T3-2 only) Install switch S8 in switch box with two screws and washers. Reconnect
wire leads if they were disconnected. Reinstall switches S5 and S6 (see fig. 4-7). Connect flare nut at end of capillary
line from S8 to original connection point.
(d) Refer to figure 3-13 and connect plug P4 to receptacle J4 behind the junction box.
(e) Refer to figure 3-4 and install the condenser fan.
(f) Perform any further maintenance on the refrigeration system and components which may be
required.
(g) If no further maintenance is required, refer to paragraph 4-8 and purge the refrigerant system.
(h) Refer to paragraph 4-4c and check the pressure control switch and the dehydrator for refrigerant
leaks. Refer to paragraph 4-4d and repair any leaks found.
(i) Refer to figure 4-4 and evacuate the refrigerant system.
(j) Refer to paragraph 4-10 and charge the system with refrigerant.
b. High Pressure Cut-Out Switch S5 and Low Pressure Cut-Out Switch S6.
(1) Removal. (See figure 4-7.)
(2) Test.
(a) Refer to figure 4-8 and test the high pressure cut-out switch.
(b) Refer to figure 4-9 and test the low pressure cut-out switch.
(3) Replace. Replace the high pressure cut-out switch and/or the low pressure cut-out switch if damage
would impair serviceability, or if failure occurs during testing.
(4) Installation.
(a) Refer to figure 4-7 and install cut-out switches.
(b) Perform any further maintenance of refrigerant components which may be required at this time.
(c) If no further maintenance of refrigerant system components is required, refer to paragraph 4-8 and
purge the refrigerant system.
(d) Refer to paragraph 4-4c and check the cut-out switches and the dehydrator for refrigerant leaks.
Refer to paragraph 4-4d and repair any leaks found.
(e) Refer to figure 4-4 and evacuate the refrigerant system.
(f) Refer to paragraph 4-10 and charge the system with refrigerant.
Change 1 4-19
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