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

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Compressor Pressure Switch

PURPOSE
This system is equipped with a compressor pressure switch that is normally open. It activates at 2069-2482 kPa (300-360 psi) and releases at 1724 kPa (250 psi). Its function is to drive the recirculation door to the closed position to reduce the system load and decrease system high-side pressure.