Geely Emgrand X7. Manual part — 431

Notes:

Some 100PG lubricating oil for the A/C system may be recycled together with the refrigerant. The recyclinged
lubrication oil quantity is indeterminate. The filling machine can separate lubrication oil from refrigerant, so as to
determine the amount of lubrication oil recyclinged. The same amount of lubricating oil should be added when
refilling the system. See the manufacturer's Instructions for learning in detail the use method of the filling
machine.

12. Start Recycling process see the manufacturer's Instructions for learning in detail the use method of the filling

machine.

13. Waiting for 5min, and then inspect pressure gauge on low-pressure side of control panel, if the A/C system

keeps vacuum, and complete Recycling.

Notes:

If the control panel display the refrigerant tank is full in the course of Recycling, close the filling machine, another
empty tank is installed for storing the refrigerant needing to the next step. Forbid using of the other types of
refrigerant tank.

14. If pressure gauge on low-pressure side begins to rise from zero, it indicates that there still has refrigerant in

system. Recycling the rest of the refrigerant. Repeat this step until the system can maintain vacuum for 2min.
The emptying filling machine refrigerant tank must be filled with enough R-134a refrigerants to fill. Inspect
the refrigerant quantity in the tank. If the amount of the refrigerant is less than 3.6kg (8lb), add the new
refrigerant to the refrigerant tank. See the instruction for use of the filling machine for details to learn the
method of adding the refrigerant.

1. Inspect whether high-pressure and low-pressure hose are connected to A/C system. Open high-pressure and

low-pressure valves on control panel of filling machine.

2. Open air valve and liquid on refrigerant reservoir.

Notes:

See the manufacturer's Instructions for learning in detail the use method of the filling machine, you must exhaust
the air from the system thoroughly before you refill with the refrigerant or recycled refrigerant.

3. Start vacuum pump and implement exhaust procedures. In the recycling process, the non-condensable gas

(mostly air) is automatically discharged from the tank. You will hear the pressure relief sound.

Notes:

Regularly replace vacuum pump oi, see the manufacturer's instructions for learning in detail the use method of the
filling machine.

4. Check the system for any leakages; see the manufacturer's instructions for learning in detail the use method

of the filling machine.

Filling and supplement of A/C system lubricating oil

You must supplement with the lubricating oil drained from the A/C system during the recycling process.

1. Use 100PG lubricating oil contained with scale bottle specially used for R-134a system.

2. Refer to the user's manual provided by manufacturer, in which use method of filling machine is explained.

Add 100PG lubricating oil to the system.

3. When filled oil volume reaches requirments, close valve.

Notes:

Remember tightening the lubricating oil bottle cover in order to avoid moisture or pollutant from entering the
lubricating oil. This operation requires the A/C system has a certain degree of vacuum, inhibits opening the
lubricating oil filling valve when the A/C system has positive pressure; otherwise, it will lead to the backflow of
the lubricating oil through the air port of the oil bottle. The oil level shall not be lower than oil suction pipe when
filling or compensating lubrication oil; otherwise, air will enter the A/C system.

Filling

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Notes:

Firstly empty the A/C system prior to filling.

1. Close high, low pressure valves on control panel.

2. Close high-pressure side valve on control panel.

3. Refer to User's manual provided by manufacturer to learn application method of filling machine.

4. Fill the A/C with a necessary amount of refrigerant and make sure the amount is measured in the correct unit

(namely kilogram or pound).

5. Start

filling

Refrigerant charging was completed successfully

1. Close high, low pressure valves on control panel of filling machine, both valves must be closed.

2. Start vehicle and A/C system.

3. Keep engine running until the readings of pressure gauge on high-pressure side and low-pressure side are

stable.

4. Compare the readings with the system specifications.

5. Check the evaporator outlet temperature and make sure the operations performed on the A/C system comply

with the system specifications.

6. Keep the A/C in operation.

7. Close the high pressure side quick coupling valve.

8. Disconnect the high pressure side hose from the vehicle.

9. Open the high pressure and low pressure side valves from the control panel. The system will be quickly

absorbed with the refrigerant in the two hoses through low-pressure side hose.

10. Closed low pressure side lower pressure quick connector valve

11. Dismantle low-pressure hose from vehicle.

Unsuccessful for refrigerant charging

Sometimes, the refrigerant entering the A/C system does not reach the total filling quantity. There are two reasons
for resulting in such situation:

1. Pressure of refrigerant can of filling machine is more or less the same as that of A/C system, which will lead

to slow filling process. See the manufacturer's Instructions for learning in detail the use method of the filling
machine.

2. There is no sufficient refrigerant in refrigerant reservoir for filling. Hereto, recycling part of refrigerant

injected from the vehicle, empty the A/C system, add refrigerant to the refrigerant can, and at last, inject
again. See the manufacturer's Instructions for learning in detail the use method of the filling machine.

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8.2.8 Dismantle and installation

8.2.8.1 A/C control panel replacement

See 8.3.8.1 Replacement of electric A/C control panel.

8.2.8.2 Ambient air temperature replacement

8.2.8.3 A/C pressure switch replacement

8.2.8.4 Solar sensor replacement

Dismantle procedure

Warning!

See 8.1.1 "warnings for intake of R-134a" in warning and precaution.

1. Disconnect the battery negative cable. Refer

to.11.8.1battery cable disconnection/connection
Procedures.

2. Disconnect harnesses connector of sun sensor

from instrument table.

NL08-0068b

Installation Procedure:

1. Connect to solar sensor harness connector.

2. Install sun sensor onto instrument table.

3. Connect the battery negative cable.

NL08-0069b

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8.3 Power A/C

8.3.1 Specifications

8.3.1.1 Fastener specifications

Torque Range

Fastener Name

Model

Metric (N·m)

English system
(lb-ft)

Pipeline system assembly hexagonal flange
face nut

M6 7-8

5-6

Pipeline system assembly hexagonal flange
face bolt

M6×12 10-12

7-9

Pipeline system assembly hexagonal flange
face bolt

M6×20 10-12

7-9

Pipeline system assembly hexagonal flange
face bolt

M6×20 18-20

13-15

Pipeline system assembly hexagonal flange
face bolt

M8×20 16-18

12-13

Compressor assembly hexagon-headed bolt

M8×105

28-30

21-22

Hexagon flange face bolt of condenser

M6×16

6-7

4-5

A/C head unit hexagon nut and spring gasket
assembling unit

M6 6-7

4-5

A/C head unit hexagon flange bolt

M6×12

6-7

4-5

A/C head unit hexagon bolt and spring gasket
assembling unit

M6×12 6-7

4-5

No.1.

No.2 water pipe steel belt type elastic

hoop

- -

-

A/C control panel cross recessed pan head
self-tapping screw and flat gasket assembling
unit

ST4.2×16 3-4.5

2.2-3.3

8.3.1.2 Refrigeration system parameters

Items Item

parameter

Nominal refrigerating capacity/W

≥4500 (rotational speed of compressor is
1800rpm )

Displacement/(ml/r) 180

Model HS18

Compressor

Electromagnetic clutch consumption
power/W

46

Max.air volume/(m3/h)

500

Air Volume Control

Automatic

Blower

Motor consumption power/W

250

Condenser

Size /mm

68×422×731

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