Expansion Valves
NOTE:
Expansion valves indicated for use on R134a systems are acceptable for R12 systems.
| Condition | Code | Procedure |
|---|---|---|
| Application incorrect | B | Require replacement |
| Attaching hardware broken | A | Require repair or replacement of hardware |
| Attaching hardware missing | C | Require replacement of hardware |
| Attaching hardware not functioning | A | Require repair or replacement of hardware |
| Corroded internally | 1 | Suggest replacement |
| Filter screen torn | A | Require replacement of screen |
| Inoperative | A | Require repair or replacement |
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NOTE:
Expansion valve operation may be affected by capillary tube location, corrosion, and insulation tape. Inoperative includes intermittent operation.
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| Leaking | B | Require replacement |
| Restricted | A | Require repair or replacement |
| Threads damaged | A | Require repair or replacement |
| Threads stripped (threads missing) | A | Require replacement |