Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
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permanently
Expansion Valve: Testing and Inspection
Fig. 8 Expansion Valve Diagnosis Chart:
Faulty
expansion valves will be indicated by low suction and discharge pressures on the manifold gauge set. In most cases the power element fails and the valve closes. Occasionally the inlet screen becomes clogged with contamination or desicant beads loose in the system.
