Description of operation

DESCRIPTION OF OPERATION

The power supply of the engine fan motor N11 arrives directly from the battery from the maxifuse FAN line of B5; therefore the fan operates when it receives a control earth.

If the engine coolant reaches a high temperature, thermometric switch I70 closes, sending the earth to activate the engine fan motor N11.

The condenser cooling fan motorN13 is connected to earth and therefore operates when it is fed by air conditioner fan relay J33.

The relay is supplied directly from the battery through the line of air conditioner/automatic clutch fuse B51.

The coil of relay J33 is fed by ignition switch power supply line (INT/A) of fuse B10; this line is controlled by power supply cut-out relay (connector C) and protected by fuse F24, both on junction unit B1.

The coil of realy J33 is energised by an earth signal coming from 3-level pressure switch K5 (pin 2) that signals that a certain pressure level has been reached in the conditioner circuit: pressure switch J33 then sends power to the condenser cooling fan motor N13.

COMPONENTS