Geely Emgrand X7. Manual part — 432

heat exchange amount/W

≥15000

Air-side resistance/Pa

≤110

Refrigerating capacity/W

≥5500

Evaporator

H-type expansion valve (ton of
refrigeration)

1.5

Temperature regulating method

Control cold-warm air mixture ratio

Lubricating oil/ml

FD46XG:150±10 ml

Driving belt (JL4G18-E)

Poly V-belt (6PK1875)

Driving belt (JLD-4G20//JLD-4G24)

Poly V-belt (

7PK1956

)

8.3.1.3 System capacity

Specification

Applications

(Metric) English

system

Refrigerant lubricating oil (100PG)

Refrigerant flow away suddenly

40 ml*

1.34 oz*

Replacement of compressor

Note: if the lubricating oil discharged in the course of recyclinging the refrigerant is not replaced, the compressor
may be damaged.

The compressor on the vehicle is pre-filled with 150 ml** (5 oz** ) of refrigerant lubricant (100PG).

Replacement of Condenser

40 ml

**

1.34

oz

**

Replacement of evaporator

60 ml

**

2.0

oz

**

Replacement of Stored Fluid Dryer Core

20 ml#

0.67 oz#

# The oil volume of 100PG to be filled should be equal to the sum of emission and specified volume of old liquid
reservoir dryer core.

Replacement of any pipe assembly (hose/pipe or pipe
assembly)

30 ml

**

1.0

oz

**

The refrigerant lubricating oil capacity of the whole
system

150 ml

5.0 oz

R-134a

Refrigerant charging capacity

550±50 g

1.21±0.11 b

*It may cause natural leakage of refrigerant, and will not cause refrigerant oil loss. The refrigerant is lost suddenly
due to the large number of leaks, hose rupture and collision or pressure release valve opening. When replacing the
parts as a result of a huge loss of the refrigerant, be sure to add sufficient lubricating oil to them.
** If loss of refrigerant oil (FD46XG) from part exceeds specified volume, the lost volume will be added.

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8.3.1.4 Resistance properties of evaporator temperature sensor

NL08-2022b

温度

阻值

（

C

）

（

k

）

Temperature (°C)

Re

si

sta

nce

value

(k

Ω

)

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8.3.2 Description and operation

8.3.2.1 Description and operation

1. Overview

The automatic A/C system will provide comfortable riding environment to the passenger no matter how the
outside weather is; and the system consists of the following main parts:

– Refrigeration

system

– Heating

system

– Air

distribution

system

–

Mode /temperature control system

The automatic A/C system will provide comfortable riding environment to the passenger no matter how the
outside weather is; and the system consists of the following main parts:

– Refrigeration

system

– Heating

system

– Air

distribution

system

–

Mode /temperature control system

2. Compressor:

The A/C compressor is driven by the engine crankshaft driving the compressor clutch belt pulley through the
transmission belt; when the electromagnetic clutch coil is not energized, the compressor belt pulley freely rotates
without driving the compressor shaft; and after the clutch coil is energized with voltage, the clutch plate and the
hub are pushed to the belt pulley and locked integrally by magnetic force to drive the compressor shaft. The
compressor is equipped with a unique lubrication system. The oil absorption port of the crankshaft discharges
through the rotating swash plate, such a path allows the lubrication of the swash plate bearing. The rotation
generates the effect of engine oil separation; certain engine oil is separated from the leakage liquid at the
crankcase liquid suction port to reflow back into the crankcase. Refluent engine oil can lubricate the mechanical
mechanism of the compressor.

The compressor is closed with the following conditions:

–

Full throttle valves are "ON"

– Low

idling

–

Ambient temperature is low

–

Engine coolant temperature is too high

–

Pressure of refrigerant is higher than 3.2MPa (464.1pounds/ square inch) or lower than 0.2Mpa (21.9 pounds/
square inch).

Notes:

Do not impact, have fall or keep top down the compressor. If the compressor is impacted or kept top down, you
should rotate the compressor clutch 5 to 6 times with hand to circulate the engine oil precipitated in the cylinder.
When the engine oil is in the cylinder, sudden revolution of the compressor will cause the valve to be damaged
and have adverse effect on the durability.

3. Condenser.receiver

dryer

High-temperature high-pressure refrigerant steam from an air condition compressor is flowed into a condenser.
The condenser consists of an aluminum pipe capable of performing rapid heat transmission and a cooling fin,
wherein the cooling fin condensates the high-temperature high-pressure refrigerant steam into
medium-temperature high-pressure liquid through radiation. Located on the right side of the condenser, the stored
fluid dryer is welded with the condenser as a whole. The internal structure design of the stored fluid dryer can

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ensure the moderate temperature and high pressure refrigerant entering the Dryer is in a mixed status of gas and
liquid and the moderate temperature and high pressure refrigerant coming out of the Dryer is in the liquefied
status.

The stored fluid dryer contains drying agent which can absorb the moisture of the refrigeration system and the
drying agent cannot be reused. Due to the following reasons, the receiver-dryer core can not be repaired but
replaced when leaking.

– Perforation

–

Seal area damaged

–

Time is too long for external air enter into the system

4. Main host of indoor A/C

The indoor A/C head unit is located in the instrument panel , including a blower motor, a blower motor control
module, an A/C filter, a heater core, an evaporator, an expansion valve, a warm and cold temperature wind control
motor as well as a variety of air deflection throttles and ventilation ducts.

A. Blower

motor

Notes:

When placing the blower motor, the fan wheel of the blower motor can not be used as the supporting surface.

To prevent the fan wheel blade from being damaged, inhibit collision of the fan wheel.

The blower consists of the following parts:

–

Permanent magnet-type motor

– Squirrel-cage

fan

The change of the revolution speed of the blower at different speeds depends on the blower motor control module
controlled by the blower motor revolution speed control device. If the user selects the maximum A/C mode, the
vast majority of the air entering the blower is from the passenger compartment (inside circulation).

Outside air enters into the vehicle in the following mode under most of operational conditions:

–

Blower motor word breathe the outside atmosphere

–

When Vehicle moves forwards, external air is pressed into

The blower motor blows air along the following line:

–

Pass through evaporator core

–

Pass through heating core

–

Enter into the passenger compartment

B. Heater

core

The heater core is the main part of the heater system. The heater core is located in the A/C head unit. When the
engine is running, the engine coolant is pumped from the engine to the heater core, the heat fro the engine coolant
is transmitted by the heater core to the air flowing through the heater core. The heater core is provided with
special inlet and outlet warm air water pipe. The HVAC water pipeline of the heater core body must be thoroughly
drained during dismantled. During maintenance, the heater core with the independent warm air water pipeline
must have been installed. The heater core is equipped with the temperature sensor; the sensor transmits the surface
temperature signal of the heater core to the A/C control module for providing more compensation parameters to
the automatic A/C.

C. Evaporator

and expansion valve

The evaporator is located at the left of the A/C head unit. When installed on the vehicle, the A/C head unit needs
to be dismantled to dismantle and install the evaporator and the expansion valve. The refrigerant pipeline of the
evaporator must be thoroughly drained during dismantlement. During maintenance, the evaporator with the
independent refrigerant pipeline must have been installed. The expansion valve is connected with the evaporator,

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