2001 NISSAN ALMERA TINO Service Repair Manual

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Page 2601 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual HFC-134a (R-134a) Service Tools and
Equipment
=NLHA0120Never mix HFC-134a refrigerant and/or its specified lubricant with CFC-12 (R-12) refrigerant and/or its lubri-
cant.
Separate and non-interchange

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NISSAN ALMERA TINO 2001 Service Repair Manual Tool number
Tool nameDescription
Service hoses
+High side hose
+Low side hose
+Utility hose
NT201
Hose color:
+Low hose: Blue with black stripe
+High hose: Red with black stripe
+Utility hose: Yellow

Page 2603 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Refrigeration System
REFRIGERATION CYCLENLHA0121Refrigerant FlowNLHA0121S01The refrigerant flows in the standard pattern, that is, through the compressor, the condenser, the liquid tank,
through the e

Refrigeration System
REFRIGERATION CYCLENLHA0121Refrigerant FlowNLHA0121S01The refrigerant flows in the standard pattern, that is, through the compressor, the condenser, the liquid tank,
through the evaporator, and back to the compressor. The refrigerant evaporation through the evaporator coil
is controlled by an externally equalized expansion valve, located inside the heater & cooling unit.
Freeze ProtectionNLHA0121S02The compressor cycles go 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 com-
pressor operation. When the evaporator coil temperature rises above the specification, the thermo control
amplifier allows compressor operation.
Refrigerant System ProtectionNLHA0121S03Refrigerant Pressure SensorNLHA0121S0303The refrigerant system is protected against excessively high or low pressures by the refrigerant pressure
sensor, located on the liquid tank. If the system pressure rises above, or falls below the specifications, the
refrigerant pressure sensor detects the pressure inside the refrigerant line and sends the voltage signal to the
ECM. ECM makes the A/C relay go OFF and stops the compressor when pressure on the high pressure side
detected by refrigerant pressure sensor is over about 2,746 kPa (27.5 bar, 28 kg/cm
2, 398 psi) or below about
137 kPa (1.37 bar, 1.4 kg/cm2, 20 psi).
Dual-pressure Switch
NLHA0121S0304The refrigerant system is protected against excessively high or low pressures by the dual-pressure switch,
located on the liquid tank. If the pressure falls out of specifications, the switch opens to interrupt compressor
operation.
Pressure Relief Valve
NLHA0121S0302The 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 (37.3
bar, 38 kg/cm
2, 540 psi)], the release port on the pressure relief valve automatically opens and releases
refrigerant into the atmosphere.
RHA682H
DESCRIPTION
Refrigeration System
HA-12

Page 2604 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual CSV613 Variable Displacement Compressor
GENERAL INFORMATIONNLHA02061. The CSV613 compressor differs from previous units. The vent temperatures of the CSV613 compressor
do not drop too far below 5°C (

Page 2605 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual DESCRIPTION=NLHA0207GeneralNLHA0207S01The 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 allow

Page 2606 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Operation=NLHA0207S021. Operation Control ValveNLHA0207S0201Operation control valve is located in the suction port (low-pressure) side, and opens or closes in response to
changes in refrigerant suctio

Page 2607 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 3. Capacity Control=NLHA0207S0203+Refrigerant pressure on suction side is low during high speed driving or when ambient or interior tempera-
ture is low.
+The bellows expands when refrigerant pressure

Page 2608 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Component LayoutNLHA0122
NHA367
DESCRIPTION
Component Layout
HA-17

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