| This pressure switch has 3 functions: |
| 1. Switches radiator fan to next higher speed when pressure increases in refrigerant circuit (to approx. 16 bar). |
| 2. Switches the air conditioning system off in the event of excess pressure (approx. 32 bar) (e.g. because of lack of engine cooling). |
| 3. Switches the air conditioning system off in the event of insufficient pressure (approx. 2 bar) (e.g. because of loss of refrigerant). |
Note | The air conditioning system pressure switch -F129- replaces the high-pressure switch for air conditioning system -F23-, the low-pressure switch for air conditioning system -F73- and the high-pressure switch for magnetic clutch -F118-. |
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