Chery A15. Manual - part 146

 

 

 

 

 

 

 

Moving parts of compressor are lubricated by oil splashed or contained in coolant: cooling oil 

will be splashed all around by rotating swashplate when compressor is working. In addition, 

the intersolubility between coolant and oil allows coolant to carry some cooling oil when 

flowing into compressor to lubricate interior moving parts. 

Installation of Compressor 

Fix compressor onto bracket with two bolts (M10*110), tightening torque: 45±5N·m. 

 

(II). Condenser 

Condenser works to cool and condense the coolant vapor exhausted by compressor to release 

the heat and liquefy the coolant. 

Installation of Condenser 

Fix condenser on water tank with two tapping screws, and fit corresponding bush and washer 

on screws, tightening torque: 6±0.6N·m; 

Fix condenser bracket on front cross beam with three bolts (M6) and washers, tightening 

torque: 1.5±0.15N·m; 

Fit the assembled condenser and radiator on corresponding fixing holes; 

Fit rubber washers and cushion blocks, and fix condenser on front cross beam with two nuts, 

tightening torque: 1.5±0.15N·m.

 

Chery A15 car uses Serpentine condenser, as the figure shows. Condenser and engine radiator 

are fixed side by side, and an axial fan driven by a DC motor is installed behind for forced 

cooling purpose of condenser and radiator. 

 

 

(III). Coolant Tank 

Coolant tank is located below condenser (outlet of condenser). The structure is shown in the 

figure below: 

 

 

 

 

 

 

 

Coolant tank is a pressure container for coolant, which delivers liquid coolant to expansion 

valve at a certain flow rate. Coolant tank strainer filtrates impurities in coolant, and the 

bibulous monox desiccant filled in dryer absorbs water content in coolant. Besides, a fusible 

plug is installed on coolant tank, which will be fused in case that the temperature and pressure 

in cooling system and coolant tank sharply increase to a certain degree due to poor radiation 

of condenser or other reasons to drain some high-pressure and high-temperature coolant, so as 

to protect cooling system. 

 

(IV). Expansion Valve and Pressure Switch 

1). Expansion Valve 

The conventional thermo-expansion valve used in Chery A15 car is fixed on inlet/outlet tube 

of evaporator, as shown in the figure below. 

 

 

 

 

 

 

The temperature sensor in expansion valve adjusts ball valve opening according to coolant 

temperature at evaporator outlet to control coolant flow rate. 

2). Pressure Switch 

Chery A15 uses dual-pressure (high/low pressure) four-wire switch as the air conditioning 

pressure switch. The switch is fitted on high pressure pipe in front of expansion valve, closing 

pressure for low pressure switch is 50PSI, and 220PSI for high pressure switch. 

 

(V). Evaporator 

Chery A15 uses tube-fin type evaporator, which is combined in the air conditioner assembly 

under dashboard. 

Evaporator has a reverse function with condenser: liquid coolant expanded by expansion 

valve absorbs heat in evaporator to be gassified to coolant gas and then reenters compressor 

for circulation. 

 

 

 

 

 

 

 

 

 

 

Installation of Evaporator 

Assemble the evaporator: fit the four bolts and water inlet and outlet pipes in the 

corresponding holes on front boarding; 

Fix evaporator with one bolt (M8*25) and four nuts respectively on steering cross beam and 

front boarding, tightening torque: 3.5±0.2N·m; 

Fix control panel on dashboard with four tapping screws, and then fit decorative plate for 

control panel, tightening torque: 1.5±0.2N·m; 

Connect the parts connecting evaporator with front compartment. 

 

(VI). Evaporator Temperature Sensor (Thermoregulator) 

The evaporator temperature sensor is a temperature-sensitive tube mechanical 

thermoregulator, whose working temperature is generally set to be off above 4ºC and on 

below 3ºC. The mounting position is right below the evaporator, as the figure shows. 

 

Sensor 

 

 

   

 

 

 

Location of Temperature Sensor 

 

(VII) Tightening Torque for Air Conditioning Pipeline Fasteners 

Hexagon bolt fixed at compressor (M10): 30N.m; 

Hexagon bolt fixed at expansion valve (M6): 7 N.m; 

Nut connecting and tightening condenser inlet pipe: 32 N.m; 

Nut connecting and tightening condenser outlet pipe:11.9～13 N.m. 

 

 

Section Twelve: Cooling System Leakage Detection 

 

Three ways to detect coolant leakage in cooling system: 

electronic leakage detector, soapy water and halogen detector 

lamp. 

(I). Electronic Leakage Detector 

Connect power plug 2 of electronic leakage detector 1 with 

power supply, place the detecting head 3 at a distance of 3mm 

away from test point and move it slowly (30mm/s), as the 

figure shows. The detector will beep if leakage is detected. 

Detecting with electronic leakage detector