AIR CONDITIONING, HEATING AND AIR CIRCULATING SYSTEM

AIR CONDITIONING, HeATING AND AIR CIRCULATING sYsTeM Air Conditioning Control 2 3 4 1

3. RECIRCULATION / FRESH AIR SELECTOR (OPTIONAL): Turn the selector to position “ ” to recirculate the air inside the cabin. Turn the selector to position “ ” to allow the fresh air entrance inside the cabin 4. TEMPERATURE CONTROL SELECTOR (OPTIONAL): Turn the temperature control selector counterclockwise to obtain cold air inside the cabin. Turn the temperature control selector clockwise to obtain hot air inside the cabin. Adjust the temperature control selector and the ventilation selector to the desired positions, to obtain maximum thermal comfort. Make sure the heater water input is totally open when desiring to obtain hot air in the cabin.

1. 2. 3. 4. ON / OFF SWITCH (OPTIONAL) VENTILATION SELECTOR (OPTIONAL) RECIRCULATION / FRESH AIR SELECTOR (OPTIONAL) TEMPERATURE CONTROL SELECTOR (OPTIONAL)

1. ON / OFF SWITCH (OPTIONAL) Press this switch and select one of the 3 ventilation speeds in order to activate the air conditioning system. Press again this switch to turn off the air conditioning system. When the system is running, a blue light on the switch will turn on. 2. VENTILATION SELECTOR (OPTIONAL): The ventilation selector has 4 positions: OFF and speeds 1, 2 and 3. Turn the selector to positiono “ ” to obtain maximum speed ventilation and to position “ ” to obtain minimum speed ventilation. When the selector is turned to OFF position, the air conditioning system is turned off automatically

Maintenance

The air conditioning and heating system maintenance is limited to three components: a. Evaporation case air filter. b. Air compressor c. Condenser

EVAPORATION CASE AIR FILTER

The evaporation case air filter cleaning must be performed whenever necessary or every 250 hours.

845B AND 865B MODELS WITH ZF TRANSMISSION

885B MODELS WITH FUNK TRANSMISSION

A/C RefRIGeRANT CHARGe (OPTIONAL)

For leak test and/or gas charging use air compressor taps A and B only. 1. Add 50 grams R134a and allow system to build up 10 bar pressure (145 psi) by applying gaseous nitrogen. 2. Proceed with a gas leak test. Should a leak be CON-

FIRMED, evacuate the system and repair the leak.

Repeat the test. 3. Esvaziar o sistema. 4. Connect he manifold hoses. 5. Connect vacuum pump to manifold center fitting. 6. Open the manifold valves and turn pump on. 7. Allow 20 minutes for pressure gages to indicate 26 inHg vacuum. Close valves and disconnect vacuum. 8. Connect charging cylinder hose, open the manifold valve high side and apply 1700 grams of gas R134a. 9. Close the manifold valve, remove gas hose and repeat the test. 10. Disconnect manifold and install service valve covers. NOTe: A qualified technician is required to perform A/C system service.

ReCOMMeNDATIONs

1. Turn on A/C only when ventilation is turned on. 2. Make sure the evaporator inlet is not blocked. 3.

4. Should the system performance fall below specification, inspect: • System refrigerant pressure; • Coolant leaks checking; • Operation of fan unit. • Evaporator for obstructions. Operate A/C at least 10 minutes per week.

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8. When engine is at high speed operate fan at maximum speed. Periodically check external cleaning of condenser (never operate condenser if it is 20% blocked or more). Close all doors and windows when operating the A/C. For fast cooling, use cabin internal air recirculation control.

sYsTeM MAINTeNANCe

1. Perform the check for leaks every 6 months of operation. 2. At every component replacement or R134a refrigerant leak, complete the oil level through the compressor with approximately 50 ml of PAG oil (Polyalkylene Glycol). If the component replaced is the compressor there is no need to complete the oil level, as the new compressor is already supplied with oil. 3. Clean condenser monthly or whenever the condenser air inlet shows 20% obstruction. 4. Check screw torque and belt tensioning yearly. 5. Clean air conditioning filter monthly or whenever air flow reduction is noticed.

6. In case of undesirable odors in the air conditioning system, operate the system for a few minutes, by putting the ventilation speed selector at maximum position and turning the temperature control selector totally clockwise (HOT).