Nissan Versa Sedan. Instruction — part 480
REFRIGERANT
HA-19
< BASIC INSPECTION >
C
D
E
F
G
H
J
K
L
M
A
B
HA
N
O
P
• Temperature setting: Full cold
• Fan speed: Maximum speed set
7. Run the engine at approximately 1,500 rpm for 2 minutes or more.
8. Stop the engine. Check again for refrigerant leakage. GO TO 4.
WARNING:
Be careful not to get burned when the engine is hot.
NOTE:
• Start refrigerant leak check immediately after the engine is
stopped.
• When refrigerant circulation is stopped, pressure on the low-
pressure side rises gradually, and after this, pressure on the
high-pressure side falls gradually.
• The higher the pressure is, the easier it is to find the refriger-
ant leakage.
Recycle Refrigerant
INFOID:0000000009269739
WARNING:
• Always use HFC-134a for A/C refrigerant. If CFC-12 is accidentally charged, compressor will be dam-
aged due to insufficient lubrication.
• Always observe and follow precautions described on refrigerant container. Incorrect handling may
result in an explosion of refrigerant container, frostbite, or the loss of eyesight.
• Do not breathe A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose, or throat.
• Do not allow HFC-134a to be exposed to an open flame etc. because it generates poisonous gas
when in contact with high temperature objects. Keep workshop well ventilated.
1. Perform oil return operation. Refer to
HA-21, "Perform Oil Return Operation"
. (If refrigerant or oil leakage
is detected in a large amount, omit this step, and then GO TO 2.)
CAUTION:
Do not perform oil return operation if a large amount of refrigerant or oil leakage is detected.
2. Check gauge pressure readings of recovery/recycling/recharging equipment. When remaining pressure
exists, recycle refrigerant from high-pressure hose and low-pressure hose.
NOTE:
Follow manufacturer instructions for the handling or maintenance of the equipment. Do not fill the equip-
ment with non-specified refrigerant.
3. Remove A/C service valve cap from the vehicle.
4. Connect recovery/recycling/recharging equipment to A/C service valve.
5. Operate recovery/recycling/recharging equipment, and recycle refrigerant from the vehicle.
6. Evacuate air for 10 minutes or more to remove any remaining refrigerant mixed with compressor oil, etc.
7. Refrigerant recycle operation is complete.
Charge Refrigerant
INFOID:0000000009269740
WARNING:
• Always use HFC-134a for A/C refrigerant. If CFC-12 is accidentally charged, compressor will be dam-
aged due to insufficient lubrication.
• Always observe and follow precautions described on refrigerant container. Incorrect handling may
result in an explosion of refrigerant container, frostbite, or the loss of eyesight.
• Do not breathe A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose, or throat.
• Do not allow HFC-134a to be exposed to an open flame etc. because it generates poisonous gas
when in contact with high-temperature objects. Keep workshop well ventilated.
1. Connect recovery/recycling/recharging equipment to the A/C service valve.
2. Operate recovery/recycling/recharging equipment, and evacuate air from A/C system for 25 minutes or
more.
CAUTION:
SHA839E
HA-20
< BASIC INSPECTION >
REFRIGERANT
Evacuate air for 15 minutes or more if the parts are replaced.
3. Check the airtightness of A/C system for 25 minutes or more. If pressure rises more than the specified
level, charge A/C system with approximately 200 g (0.4 lb) refrigerant and check that there is no refriger-
CAUTION:
Check the airtightness for 15 minutes or more if the parts are replaced.
4. If parts other than compressor are replaced, fill compressor oil according to parts that are replaced.
5. Charge the specified amount of refrigerant to A/C system.
6. Check that A/C system operates normally.
7. Disconnect recovery/recycling/recharging equipment. (Collect the refrigerant from the high-pressure hose
and low-pressure hose of recovery/recycling/recharging equipment.)
8. Install A/C service valve cap.
9. Refrigerant charge is complete.
OIL
HA-21
< BASIC INSPECTION >
C
D
E
F
G
H
J
K
L
M
A
B
HA
N
O
P
OIL
Description
INFOID:0000000009269741
MAINTENANCE OF OIL LEVEL
The compressor oil is circulating in the system together with the refrigerant. It is necessary to fill compressor
with oil when replacing A/C system parts or when a large amount of refrigerant leakage is detected. It is impor-
tant to always maintain oil level within the specified level. Otherwise, the following conditions may occur;
• Insufficient oil amount: Stuck compressor
• Excessive oil amount: Insufficient cooling (caused by insufficient heat exchange)
Inspection
INFOID:0000000009269742
If a compressor is malfunctioning (internal noise, insufficient cooling), check the compressor oil.
1.
COMPRESSOR OIL JUDGMENT
1. Remove the compressor. Refer to
HA-29, "Removal and Installation"
.
2. Sample compressor oil and judge based on the figure.
Judgement result 1>>Replace compressor only.
Judgement result 2>>Replace compressor and liquid tank.
Perform Oil Return Operation
INFOID:0000000009269743
CAUTION:
If a large amount of refrigerant or oil leakage is detected, do not perform oil return operation.
1. Start the engine and set to the following conditions.
• Engine speed: Idling to 1,200 rpm
• A/C switch: ON
• Fan speed: Maximum speed set
• Intake door position: Recirculation
• Temperature setting: Full cold
2. Perform oil return operation for approximately 10 minutes.
3. Stop the engine.
4. Oil return operation is complete.
Oil Adjusting Procedure for Components Replacement Except Compressor
INFOID:0000000009269744
Fill with oil for the amount that is calculated according to the following conditions;
Example: oil amount to be added when replacing evaporator and liquid tank [m (Imp fl oz.)] = 35 (1.2) + 5
(0.2) +
α
TYPE
: Refer to
JSIIA0927GB
Conditions
Oil amount to be added to A/C system
m (Imp fl oz.)
Replace evaporator
35 (1.2)
Replace condenser
15 (0.5)
HA-22
< BASIC INSPECTION >
OIL
Oil Adjusting Procedure for Compressor Replacement
INFOID:0000000009269745
1. Drain oil from removed compressor and measure oil amount.
1. Drain oil from high-pressure port (A) and low-pressure port
(B) while rotating magnet clutch.
2. Measure total amount of oil that is drained from removed compressor.
2. Drain oil from a new compressor that is calculated according to
the following conditions;
CAUTION:
If oil amount that is drained from removed compressor is less than 60 m (2.1 Imp fl oz.), perform
calculation by setting “D” as 40 m (1.4 Imp fl oz.).
Example: oil amount to be drained from a new compressor when replacing compressor and liquid tank
[m (Imp fl oz.)] [D = 60 (2.1),
α = 5 (0.2)]
120 (4.2)
− [60 (2.1) + 20 (0.7) + 5 (0.2) + 5 (0.2)] = 30 (1.1)
3. Install compressor and check the operation.
Replace liquid tank
5 (0.2)
Refrigerant leakage is detected
Large amount leakage
30 (1.1)
Small amount leakage
—
Oil amount that is recycled together with refrigerant during recycle operation
α
Conditions
Oil amount to be added to A/C system
m (Imp fl oz.)
ALIIA0484ZZ
Amount to be drained (A) [m (Imp fl oz.)] = F
− (D
+ S + R +
α)
F
: Oil amount that a new compressor contains
[120 (4.2)]
D
: Oil amount that is drained from removed
compressor
S
: Oil amount that remains inside of removed
compressor [20 (0.7)]
R
: Oil amount to be added according to compo-
nents that are removed except compressor
α
: Oil amount that is recycled together with re-
frigerant during recycle operation
Conditions
Oil amount to be added to A/C system
m (Imp fl oz.)
Replace evaporator
35 (1.2)
Replace condenser
15 (0.5)
Replace liquid tank
5 (0.2)
JPIIA1455GB
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст