air filter DACIA SUPERNOVA 2004 Owner's Manual

AIR CONDITIONING
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REMOUNTING
Perform the dismounting
operations in the reverse order.
Fill the refrigerant circuit and check the good operation of the climate control system.
NOTE
Ensure that evaporator finned plates are not deformed and they are not excessive
dirty.
The tightening nuts for the climate and conditioning assembly, the connections for piping,
condenser and filter tank, must have the following tightening moments:
- thread 3/4” – 16 pitch/l” – at t he moment 18-20 Nm;
- thread 5/8” - 18 pitch/l” – at the m oment 14-20 Nm.
The tightening moment of the compressor flange attachment screw -12+/-1,2 Nm.
The tightening moment of the thermostatic probe attachment screw -5,7+/-0,5 Nm.
The tightening moment of the pressure capture - 20,7+/-2 Nm.
NOTE
After each operation that implies t he disconnection of t he battery, at its reconnection,
introduce the radio code that is written on the vehicle-selling invoice. EVAPORATOR
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AIR CONDITIONING
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PRESSURE CONTROLLER
(low pressure, high pressure, medium pressure, in accordance
with the specification) or pressure capture
- low pressure – disconnect when the pressure in the low pressure circuit is lower than
1,96 +/-0,2 bar , reestablishing at a higher pressure than 2,16 +/- 0,2 bar; - higher pressure – disconnect when the pressure in the high pressure circuit is higher than
31,4 +/-2 bar , reestablishing at a higher pre ssure than 25,5 +/-2 bar; - medium pre ssure - start s the bl ower on t he second level speed, when t he pressure i s
higher than 17,7+/-1bar and stops the blower at a lower pressure 13,7+/- 1,2.
Thermostatic expansion valve allows the reduction of the refrigerant liquid pressure which is
coming from t he condenser, passing through the tank filter and i s continuously adjusting the
refrigerant flow from the evaporator, to reach the compressor in vapor condition. PRESSURE CONTROLLER
The good operation of the air conditioning unit is ensured by a dryer filter tank that ha s the
purpose to protect the unit. The filter’s purpose is to absorb the eventually solid particles found
in the oil and refrigerant liquid circulation.
The interception is needed as they might block the operation of the thermostatic expansion
valve or may produce the compressor mobile parts worn or gripping.
DETECTION OF REFRIGERANT F LUID LEAKAGE
In order to detect the refrigerant liquid leakage, it is used a detector, calibrated to detect
leakage of 9gr. /year.
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AIR CONDITIONING
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DRY
ER FILTER TANK
The dryer filter tank has a triple function in the air conditioning unit:
- filtering the refrigerant fluid from the unit;
- absorbing the moisture from the unit;
- it is a buffer storage tank of refrigerant fluid.
DRY ER FILTER TANK
REMOUNTING
Perform the dismounting operations in the reverse order.
Fill the refrigerant circuit, check the leakage and the good operation of the unit.
AT TENT ION
Do not mount dryer fi lter tanks that do not have protection covers. DRY
ER FILTER TANK REPLACEMENT
DISMOUNTING
Disconnect the battery.
Drain the refrigerant circuit.
Dismount the piping and protect the threads.
Disconnect the connector of the air conditioning pressure controller.
Dismount the receiver tank filter from the collar support.
Replace the tank filter.
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