|
| |
TM5-4120-387-14
(c) Remove thermometer.
(d) Cover the bulb and suction line with insulation tubing. Secure
insulation tubing with tape, item 11, Appendix E.
(e) Close charging valves on unit.
(f) Remove gages or service manifold from charging valves.
(g) Install hose connection protective caps.
(h) Using screwdriver, secure charging valve cover with four screws
and flat washers.
c .
Removal
(1) Discharge the refrigerant system per paragraph 5-6.
(2) Unwrap insulation from suction line so that sensing bulb is exposed.
Loosen screws and nuts in clamps. Pull bulb out of clamps.
(3) Disconnect flare nut on external equalizer line from expansion valve.
(4) Remove the two screws, flat washers, lockwashers, and spacers that
attach the valve body to its mounting bracket.
(5) Remove remaining valve components except for body flange. (See
figure 5-20).
NOTE
If valve body flange is not damaged, do not remove (debraze)
it from the system.
(6) If valve body flange is to be removed, purge the system with nitrogen
and debraze the two tubes.
(See paras 5-7 and 5-8.)
d.
Installation
(1) If valve body flange was removed, purge the system with nitrogen and
braze the two tubing joints. (See paras 5-7 and 5-8.)
(2) See figure 5-22 for valve component arrangement.
(3) Place cap screws, lockwashers, flat washers, and spacers through
bracket and valve body flange.
(4) Be sure that valve components are properly assembled and alined and
secure power assembly to body flange.
(5) Connect flare nut on external equalizer line to expansion valve.
5-61
|
