Chery A15. Manual — part 132

reservoir.

(2) Tighten the propane reservoir 16 to the

leak detector.

(3) Insert a lighting match into lighting device

9, and then slowly turn the adjusting
handle 14 in the counterclockwise
direction till the torch is lit.

(4) Adjust the flame to smallest. The smaller

the flame, the more sensitive to the leak of
refrigerant.

(5)Move suck pipe 3 to the possible leak

position.

(6) Observe the change of flame color. The

flame has no color if there is no leakage.
The flame is tint green if there is very
small leakage or be blue if there is
relatively big leakage, and it will become
purple if there is too much leakage.

5. Methods of Refrigerant Oil Charging
There are two methods for refrigerant oil
charging: direct charging method and vacuum
inhaling method.

1）Direct charging
Remove the oil charging plug 1, and charge
the specified model of refrigerant oil.

2）Vacuum inhaling
Vacuumize the refrigeration system to 30psi,
and then start to charge the refrigerant oil, the
procedures of which are as follows:

(1) Turn off the high-pressure manual valve,

and turn off the auxiliary valve.

(2) Remove the high-pressure side hose from

the manifold pressure gauge, and insert
the hose into the oil cup.

(3) Turn off the auxiliary valve to inhale the

refrigerant oil into the refrigeration system
from the oil cup.

(4) When the refrigeration oils in the cup are

nearly evacuated, immediately turn off the

Vacuumizing and Charging the Refrigeration Oil

Oil cup

High-pressure pipe

High-pressure manual valve

Low-pressure side hose

Air return

Air exhaust

auxiliary valve

High-pressure side hose

Low-pressure manual valve

High-pressure gauge

Low-pressure gauge

Vacuum pump

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auxiliary valve so as to prevent the air
from being inhaled into the system.

(5) Connect the high-pressure side hose joint

to the manifold pressure gauge, turn on the
high-pressure manual valve, and start up
the vacuum pump to vacuumize the
high-pressure side hose. And turn on the
auxiliary valve to vacuumize for the
system to 30psi, and then vacuumize 15
min again so as to remove the air entering
into the system together with the oils. In
this case, the refrigeration oils are in the
high-pressure side, and the oils will return
back to the compressor after the operation
of the system.

3）

Type & amount of refrigerant oil charged

Regulated amount: SP10 type, 150ml.

It is unnecessary to charge the refrigerant oil
into the newly-mounted A/C system, and it is
required to complement some refrigerant oil
only when a certain part is needed to repair or
when the vehicle is driven to a specified
mileage.

The amount of implementing oil required
when replacing parts is as follows: Evaporator
and condenser: 30ml. Drier: 20ml. and pipe:
10ml.

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6. Methods of Refrigerant Vacuumizing

(2)

Turn on the high- and low-pressure valves
of manifold pressure gauge, and start up
the vacuum gauge.

It is difficult to pump out the water from the
refrigeration system when vacuumizing. But
the vacuumizing can reduce the fluidization
point of water after the vacuum is generated in
the refrigeration system, which enables the
water to boil at the lower temperature, and
pump out it in the form of steam from the
system.
Conduct the leak check firstly before
vacuumizing. If vacuumizing without the leak
check, it is difficult to find out the leaking
position after vaccumizing when there is a
certain leakage phenomenon.
The purpose of vacuumizing is to further check
the air tightness of the refrigeration system
under the vacuum condition, and prepare for
the system’s refrigerant charging. Its
procedures are as follows:
(1) Connect the high-pressure gauge hose to

the high-pressure service valve joint of
refrigerant tank, shown in the figure below,
connect the low-pressure gauge hose to the
low-pressure service valve joints on the
pipe from the evaporator to the A/C
compressor, and connect the intermediate
hose to the interface of vacuum pump.

Vacuumizing

1-

Connect to low-pressure service valve hose

2-

Connect to high-pressure service valve hose

3-Low-pressure gauge

4-High-pressure gauge

5-Low-pressure manual valve

6-High-pressure manual valve

7-Vacuum pump

On

On

On

Low
pressu

High
pressure

(3) The vacuum pump works for at least 15

min to make the vacuum reading of
low-pressure gauge below 30psi . If the
vacuum reading can’t be obtained, turn off
the manual valves at the high- and
low-pressure sides, stop vacuumizing, and
check the leaking position.

(4) Turn off the valves, and the gauge needle

doesn’t return back within 10 min, which it
is called the vacuum leakage check method.
If the vacuum down, it shows that there is a
leaking position which can be found out by
using a leakage detector.

(5)

If the gauge needle doesn’t considerably

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return back within 10 min, it indicates that
the system is normal and the refrigerant can
be charged into the system.

(6) Restart the vacuum pump, and turn on the

low-pressure valve of the manifold
pressure gauge to continuously vacuumize
15 min. Then, turn off the low-pressure
valve to stop vacuumizing, and prepare for
charging the refrigerant.

7. Refrigerant Recycling Equipment Operation Guide
Recycle the refrigerant from the
refrigeration device
When the refrigerant is removed from the
refrigeration device under the following
conditions, a recycling receiver shall be
applied to recycle the refrigerant.
Before the components on the refrigerant pipe
are replaced.
When moisture or air enters into the
refrigerant pipe.
When excessive refrigerants are charged into
the system.

WARNING:

(1)

When the recycling receiver is required, take care to operate it according to the

requirements of device manufacturer's instructions.

(2) After the completion of recycling work, measure the level of compressor oil recycled so

that the same quantity of oils are added to the refrigeration device in the future.

Operation guide for refrigerant recycling receiver

1. Install the manifold pressure gauge kit on the service valve.

2. Recycle the refrigerant from the refrigeration device.

(a) Connect the intermediate hose to the recycling receiver.

(b) Operate the recycling receiver.

(c) Open the manual high- and low-pressure valves on the refrigeration pressure gauge kit.

1. After the completion of recycling work, turn off the recycling receiver.
2. Remove the manifold pressure gauge kit from the service valve.

DRAINED
OIL
QUANTITY

OIL BOTTLE

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