Control unit

CONTROL UNIT

Positioned on the right-hand side of the upper crossmember this momentarily deactivates the air conditioning system under some conditions of engine operation where the engine is required to deliver maximum power to the wheels thus eliminating the absorption of power by the compressor (for example, during overtaking, rapid acceleration etc.).
The control unit activates the following operating logic, or rather, two different operating logics at low and at high rpm.

• below 2000 rpm, as soon as the full load contact closes, the compressor electromagnetic joint is de-energized and it is re-connected as soon as the switch opens;
• above 2000 rpm the compressor supply is cut off for only 8 sec. after which it is restored.

a thermal contact is fitted on the thermostatic cup which cuts off the compressor if the engine temperature reaches over 111°C.

CONTROL PANEL

1. Air temperature adjstment knob
The heating is shut off when the knob is turned completely to the left; the temperature of the air is gradually increased turning the knob rightwards: maximum heating is obtained when the kknob is turned completely to the right.

2. Fan control knob
When this is on 0 the fan is shut off; to switch it on, turn it clockwise and set it on the speed required. The flow of air to the passenger compartment can be shut off setting the above knob to the OFF position.

3. Air flow distribution control knob
This distributes the air flow among the different vents.

4. Outside air or recriculation control button
When this is pressed it shuts off the outside air inlet and admits recirculation air.

5. Air conditioning control button
This is pressed to turn on the manual air conditioner.

IDENTIFICATION AND LOCATION OF THE COMPONENTS IN THE DUCTING SYSTEM AND HEATER - DISTRIBUTOR UNIT

1. Upper distribution vent
2. Mixing vent
3. Ducting system
4. Outside air/recirculation flow adjustment vent
5. Electric actuator for outside air/recirculation flow adjustment vent
6. Electrice fan
7. Evaporator
8. Heater radiator
9. Lower distribution vent
10. Heater-distributor unit
11. Fan speed resistance
12. Heater readiator coolant inlet tap
13. Distribution vents control cable
14. Mixing vent and heater radiator inlet tap control cable