1999 NISSAN PRIMERA Electronic Repair Manual

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Page 1857 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Tool number
Tool nameDescription
KV99232340
or
KV99107400
Clutch disc puller
NT376
Removing clutch disc
KV99106200
Pulley installer
NT235
Installing pulley
HFC-134a (R-134a) Service Tools and
Equipmen

Page 1858 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Tool name Description Note
Electrical leak detector
NT198
Power supply:
lDC 12 V (Cigarette lighter)
Manifold gauge set (with
hoses and couplers)
NT199
Identification:
lThe gauge face indicates R-134a

Page 1859 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Precautions for Service Equipment
RECOVERY/RECYCLING/RECHARGING EQUIPMENT
Be certain to follow the manufacturers instructions for machine
operation and machine maintenance. Never introduce any refrig

Precautions for Service Equipment
RECOVERY/RECYCLING/RECHARGING EQUIPMENT
Be certain to follow the manufacturer's instructions for machine
operation and machine maintenance. Never introduce any refrig-
erant other than that specified into the machine.
ELECTRONIC LEAK DETECTOR
Be certain to follow the manufacturer's instructions for tester
operation and tester maintenance.
VACUUM PUMP
The lubricant contained inside the vacuum pump is not compat-
ible with the specified lubricant for HFC-134a (R-134a) A/C sys-
tems. The vent side of the vacuum pump is exposed to atmo-
spheric pressure, so the vacuum pump lubricant may migrate out
of the pump into the service hose. This is possible when the
pump is switched off after evacuation (vacuuming) and hose is
connected to it.
To prevent this migration, use a manual valve placed near the
hose-to-pump connection, as follows:
lUsually vacuum pumps have a manual isolator valve as part
of the pump. Close this valve to isolate the service hose from
the pump.
lFor pumps without an isolator, use a hose equipped with a
manual shut-off valve near the pump end. Close the valve to
isolate the hose from the pump.
lIf the hose has an automatic shut off valve, disconnect the
hose from the pump. As long as the hose is connected, the
valve is open and lubricating oil may migrate.
Some one-way valves open when vacuum is applied and close
under a no vacuum condition. Such valves may restrict the
pump's ability to pull a deep vacuum and are not recommended.
MANIFOLD GAUGE SET
Be certain that the gauge face indicates R-134a or 134a. Be sure
the gauge set has 1/2º-16 ACME threaded connections for ser-
vice hoses. Confirm the set has been used only with refrigerant
HFC-134a (R-134a) and specified lubricants.
SERVICE HOSES
Be certain that the service hoses display the markings described
(colored hose with black stripe). All hoses must include positive
shut off devices (either manual or automatic) near the end of the
hoses opposite the manifold gauge.
RHA270D With isolator valve
Hose fittings:
1/2º-16ACME
Close
Shut off valve Isolator valve
Open
Without isolator valve
SHA533D
1/2¢¢-16ACME
RHA272D Hose fittings to
manifold gauge orrecovery/recycling
equipment; 1/2º-16ACME
Black stripe
M14´1.5 fitting optional
(Hose may be permanentlyattached to
coupler)
PRECAUTIONS AND PREPARATION
HA-10

Page 1860 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual SERVICE COUPLERS
Never attempt to connect HFC-134a (R-134a) service couplers
to an CFC-12 (R-12) A/C system. The HFC-134a (R-134a) cou-
plers will not properly connect to the CFC-12 (R-12) system.
How

Page 1861 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Refrigeration Cycle
REFRIGERANT FLOW
The refrigerant flow is in the standard pattern. Refrigerant flows through the compressor, condenser, liquid
tank, evaporator, and back to the compressor.
The refr

Refrigeration Cycle
REFRIGERANT FLOW
The refrigerant flow is in the standard pattern. Refrigerant flows through the compressor, condenser, liquid
tank, evaporator, and back to the compressor.
The refrigerant evaporation through the evaporator coil is controlled by an externally equalized expansion
valve, located inside the evaporator case.
FREEZE PROTECTION
Variable displacement (CSV613)
Under normal operating conditions, when the A/C is switched on, the compressor runs continuously, and the
evaporator pressure, therefore temperature, is controlled by the CSV613 variable displacement compressor
to prevent freeze up.
Vane rotary (CR-14)
The compressor cycles on and off to maintain the evaporator temperature within a specified range. When
the evaporator coil temperature falls below a specified point, the thermo control amplifier interrupts the
compressor operation. When the evaporator coil temperature rises above the specification, the thermo con-
trol amplifier allows compressor operation.
REFRIGERANT SYSTEM PROTECTION
Dual-pressure switch (System with CR-14 compressor)
The refrigerant system is protected against excessively high or low pressure by the dual-pressure switch,
located on the liquid tank. If the system pressure rises above, or falls below the specifications, the dual-
pressure switch opens to interrupt the compressor operation.
Pressure sensor (System with CSV613 compressor)
The pressure sensor is located on the liquid tank. It converts the system pressure into a voltage value witch
is then input into ECM.
If the system pressure rises above, or falls below the specifications, ECM interrupt the compressor opera-
tion.
Fusible plug
Open at temperatures above 105ÉC (221ÉF), thereby discharging refrigerant to the atmosphere. If this plug
is melted and opened, check the refrigerant line and replace liquid tank.
Pressure relief valve (CSV613 compressor)
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compres-
sor. When the pressure of refrigerant in the system increases to an abnormal level [more than 3,727 kPa
(38 kg/cm
2, 540 psi)], the release port on the pressure relief valve automatically opens and releases refrig-
erant into the atmosphere.
DESCRIPTION
HA-12

Page 1862 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual RHA896FA Pressure relief valve (CSV613 only)
Outside airCompressor
Condenser
Liquid tank
Dual-pressure switch/ pressure sensorExpansion valveBlower motor EvaporatorHigh-pressure
gas
High-pressure
liqu

Page 1863 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual CSV613 Variable Displacement Compressor
GENERAL INFORMATION
1. The CSV613 compressor differs from previous units. The vent temperatures of the CSV613 compress
or do not drop too far below 5ÉC (41ÉF)

Page 1864 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual DESCRIPTION
General
The variable compressor is basically a swash plate type that changes piston stroke in response to the
required cooling capacity.
The tilt of the swash plate allows the pistons str

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