Operation CHARM: Car repair manuals for everyone.
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)

Or, hide this message: temporarily or permanently

Compressor Cut-Off/Cycling Switch

A/C HIGH PRESSURE SWITCH (Pressure Monitor)

3 Functions

High Pressure switch-off
Cut-In Pressure 24 ± 2 bar (420 ± 29 psi)
Cut-Out Pressure 30 ± 2 bar (440 ± 29 psi)
Low Pressure switch-off
Cut-In Pressure 2.15 ± 0.35 bar (31 ± 5.1 psi)
Cut-Out Pressure 2.0 ± 0.25 bar (29 ± 3.6 psi)
Cooling Fan Control
Cut-In Pressure 16.5 ± 1.2 bar (240 ± 17.5 psi)
Cut-Out Pressure 12.5 ± 1.5 bar (180 ± 22 psi)