Service manual

6-27
T-294-01
c. Installing the Expansion Valve
1. Clean the suction line with sandpaper before
installingbulbtoensureproperheattransfer. Apply
thermalgreasetotheindentationint hesuctionline.
2. Strap the thermal bulb to the suction line, making
sure bulbis placed firmly intothesuctionline. See
Figure 6-29 for bulb placement.
3. Insulate the thermal bulb.
4. Brazeinletconnectiontoinletline,seeFigure 6-31.
5. Braze outlet connection to outlet line.
6. Reinstall the cushion clamps on inlet and outlet
lines.
7. Brazetheequalizerconnectiontotheequalizerline.
8. Check superheat (refer to section 2.2 and
Table 6-9).Containerboxtemperatureshouldbeat
-- 1 8 _C(0_).
Copper Tube
(Apply heat for
10 -15 seconds)
Bi -metallic Tube Connection
(Apply heat for 2-5 seconds)
Do not use a wet cloth!
Braze Rod
(’Sil-Phos” = 5.5% Silver, 6% Phosphorus)
Figure 6-31. Hermetic T her most atic Expansion Valve Brazing Procedure