Daewoo Nexia

Since 1994 of release

Repair and car operation

19.8.1. Check of system of cooling of air

THE GENERAL DATA

In the presence of signs of malfunction of system of cooling:

1) to Check up external surfaces and a radiator and the condenser to be convinced of absence of contaminations (a dirt, leaves, etc.) and in possibility of free movement of air through honeycombs of heat exchangers. To examine also space between a radiator and the condenser.

2) to Check up, whether there are no deformed and pressed tubes in the heat exchanger, hoses, pipelines, etc.

3) to Check up serviceability of the fan.

4) to Check up all air lines on presence of thinnesses or contaminations. The low expense of air can specify in capacity reduction of the heat exchanger of the evaporator.

5) to Check up presence of proslipping of coupling of the compressor.

6) to Check up a tension driving a compressor belt.

7) At presence in compressor V-5 system KB to spend control checks.

Possible malfunctions and methods of their elimination (System KB with coolant R-12)

SIGNS	THE REASON	ELIMINATION
At inclusion of a signalling device of a high pressure the compressor stops	The steam valve of a tank is closed	To open the valve
	The tank is completely filled by a coolant	To remove and replace a tank
		To check up calibration of a weight platform or to consult with factory experts
The compressor continues to work after achievement разряжения 432 mm Hg (57,5 кПа)	The vacuum switch is faulty	To replace the switch
The compressor joins, but does not work	Compressor overheat	To cool the compressor
	The switch of limiting temperature is faulty	Consult with factory experts
	The compressor is faulty	To replace the compressor to Add 90-120 ml of refrigerating oil of mark 150 in a cavity всасывания at the working compressor
	There is not enough oil in the compressor
The stain in the centre of the indicator of humidity does not change the colour with yellow on green (after work within two hours)	Humidifying of the filter of a dehumidifier	To remove and replace the dehumidifier filter
	Insufficient quantity of a coolant	To add a coolant to norm in a tank
	Decolouration of the indicator of humidity	To remove and replace the indicator
The compressor does not provide level разряжения in system of 432 mm Hg (57,5 кПа)	There is not enough oil in the compressor	To add 90-120 ml of refrigerating oil of mark 150 in a cavity всасывания at the working compressor
	Leaks in system	To eliminate leaks
	The compressor is faulty	To replace the compressor
There is no coolant movement	The liquid valve of a tank is closed	To open the valve in system contours in a mode
	The steam valve of a tank is closed	To open the valve recycling
	The pump is disconnected	To switch off and again to include the pump
	The coolant pump is faulty	To remove and replace the pump