In a refrigeration system, once the gauge manifold hoses are attached to the compressor service valve connections and properly purged, what should be...

Question

In a refrigeration system, once the gauge manifold hoses are attached to the compressor service valve connections and properly purged, what should be the status of the manifold valves and the service valves when the purpose for attachment is to read system pressures?

Accepted Answer

both manifold hand valves should be closed, and the compressor service valves should be cracked off their backseats

Engine: Refrigeration AC

In a refrigeration system, once the gauge manifold hoses are attached to the compressor service valve connections and properly purged, what should be the status of the manifold valves and the service valves when the purpose for attachment is to read system pressures?

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