Nissan Leaf. Manual — part 753

PRECAUTIONS

HAC-15

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[AUTO A/C (WITH HEAT PUMP)]

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SERVICE COUPLERS

Never attempt to connect HFC-134a (R-134a) service couplers to

the CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers

do not properly connect to the CFC-12 (R-12) system. However, if an

improper connection is attempted, discharging and contamination

may occur.

REFRIGERANT WEIGHT SCALE

Verify that no refrigerant other than HFC-134a (R-134a) and speci-

fied lubricants have been used with the scale. The hose fitting must

be 1/2

″-16 ACME if the scale controls refrigerant flow electronically.

CALIBRATING ACR4 WEIGHT SCALE

Calibrate the scale each three month.

To calibrate the weight scale on the ACR4:
1. Press “Shift/Reset” and “Enter” at the same time.
2. Press “8787”. “A1” is displayed.
3. Remove all weight from the scale.
4. Press “0”, then press “Enter”. “0.00” is displayed and change to “A2”.
5. Place a known weight (dumbbell or similar weight), between 4.5 and 8.6 kg (10 and 19 lb.) on the center

of the weight scale.

6. Enter the known weight using four digits. (Example 10 lb. = 10.00, 10.5 lb. = 10.50)
7. Press “Enter” — the display returns to the vacuum mode.
8. Press “Shift/Reset” and “Enter” at the same time.
9. Press “6” — the known weight on the scale is displayed.
10. Remove the known weight from the scale. “0.00” is displayed.
11. Press “Shift/Reset” to return the ACR4 to the program mode.

CHARGING CYLINDER

Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder’s top valve

when filling the cylinder with refrigerant. Also, the accuracy of the cylinder is generally less than that of an

electronic scale or of quality recycle/recharge equipment.

Shut-off valve rotation

A/C service valve

Clockwise

Open

Counterclockwise

Close

RHA273D

RHA274D

HAC-16

< PREPARATION >

[AUTO A/C (WITH HEAT PUMP)]

PREPARATION

PREPARATION

PREPARATION

Commercial Service Tools

INFOID:0000000010121726

Tool name

Description

Service hoses
• High-pressure side hose
• Low-pressure side hose
• Utility hose

Hose color:
• Low-pressure side hose: Blue with

black stripe

• High-pressure side hose: Red with

black stripe

• Utility hose: Yellow with black stripe

or green with black stripe

Hose fitting to gauge:
• 1/2

″

-16 ACME

Insulated gloves

Comply with EN60903:

• Use protective gloves made of

insulating material.

• The protective gloves must be

capable of resisting the voltage
of 600 or more.

Removing and installing high voltage
components

Leather gloves
[Use leather gloves that can fas-
ten the wrist tight]

• Removing and installing high volt-

age components

• Protect insulated gloves

Insulated safety shoes

Comply with EN60903:

• Use protective shoes made of

insulating material.

• The protective shoes must be

capable of resisting the voltage
of 600 or more.

Removing and installing high voltage
components

Face shield
[Comply with EN166.]

• Removing and installing high volt-

age components

• To protect face from the spatter on

the work to electric line

Insulated helmet

Removing and installing high voltage
components

S-NT201

JMCIA0149ZZ

JPCIA0066ZZ

JPCIA0011ZZ

JPCIA0167ZZ

JPCIA0013ZZ

PREPARATION

HAC-17

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[AUTO A/C (WITH HEAT PUMP)]

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Insulation resistance tester
(Multi tester)

Measuring insulation resistance,
voltage and resistance

(J-48710)
NISSAN ACR2009 RRR Unit

Refrigerant recovery, recycling and
recharging

(J-41995)
Electrical leak detector

Power supply:
DC12V (Battery terminal)

Manifold gauge set
(with hoses and couplers)

Identification:
• The gauge face indicates HFC-

134a (R-134a).

Fitting size: Thread size
• 1/2

″

-16 ACME

Service couplers
• High-pressure side coupler
• Low-pressure side coupler

Hose fitting to service hose:
M14 x 1.5 fitting is optional or perma-
nently attached.

Refrigerant weight scale

For measuring of refrigerant
Fitting size: Thread size
1/2

″

-16 ACME

Vacuum pump
(Including the isolator valve)

Capacity:
• Air displacement: 4 CFM
• Micron rating: 20 microns
• Oil capacity: 482 m (17 Imp fl oz.)
Fitting size: Thread size
• 1/2

″

-16 ACME

Tool name

Description

JPCIA0014ZZ

WJIA0293E

AHA281A

RJIA0196E

S-NT202

S-NT200

S-NT203

HAC-18

< PREPARATION >

[AUTO A/C (WITH HEAT PUMP)]

PREPARATION

Special Service Tool

INFOID:0000000010121727

The actual shape of the tools may differ from those illustrated here.

Oil and Grease

INFOID:0000000010121728

Tool number
(TechMate No.)
Tool name

Description

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(J-46534)
Trim tool set

Removing trim components

AWJIA0483ZZ

Name

Application

Note

Refrigerant can (HFC-134a)

Charging refrigerant

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Compressor oil (ND-OIL11)

Refilling compressor oil

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