Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual — part 1087
1A–70 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Refrigerant Line
Refrigerant Line and Associated Parts
852R100003
Legend
(1) Clip and Clamp
(2) Liquid Line (High-Pressure Pipe)
(3) Discharge Line (High-Pressure Hose)
(4) Radiator Grille
(5) Suction Line (Low-Pressure Pipe)
Removal
1. Disconnect the battery ground cable.
2. Discharge and recover refrigerant.
D
Refer to Refrigerant Recovery in this section.
3. Remove radiator grille.
4. Remove clip and clamp.
5. Disconnect liquid line (High-pressure pipe).
6. Disconnect suction line (Low-pressure pipe) using a
back-up wrench.
7. Disconnect suction line (Low-pressure hose) using a
back-up wrench.
8. Disconnect discharge line (High-pressure hose)
using a back-up wrench.
D
Use a backup wrench when disconnecting and
reconnecting the refrigerant lines.
D
When removing the refrigerant line connecting part,
the connecting part should immediately be plugged
or capped to prevent foreign matter from being
mixed into the line.
HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–71
Installation
To install, follow the removal steps in the reverse order,
noting the following point:
1. O-rings cannot be reused. Always replace with new
ones.
2. Be sure to apply new compressor oil to the O-rings
when connecting lines.
3. Tighten the refrigerant line to the specified torque.
Refer to Main Data and Specifications for Torque
Specifications in this section.
1A–72
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Main Data And Specifications
General Specifications
Heater Unit
Temperature control
Reheat air mix system
Capacity
4.3 kw (3700 Kcal./hr.)
Air flow
280 m
!
/h
HEATER CORE
Type
Fin and tube type
Element dimension
167 mm (6.6 in.)
´ 151 mm (5.9 in.) ´ 35 mm (1.4 in.)
Radiating area
Approx. 2.4 m
EVAPORATOR ASSEMBLY
Capacity
4.8 kw (4100 Kcal./hr.)
Air flow
430 m
!
/hr
EVAPORATOR CORE
Type
Al-laminate louver fin type
Element dimension
235 mm (9.3 in.)
´ 224 mm (8.8 in.) ´ 60 mm (2.4 in.)
EXPANSION VALVE
Type
External pressure equalizer type
THERMOSTAT SWITCH
Type
Electronic thermostat
OFF: Below 1.0
± 0.5 °C (33.8 ± 0.9 °F)
ON: Above 2.0
± 0.3 °C (3.6 ± 0.5 °F)
CONDENSER
Type
Parallel flow type
Radiation performance
14.8 kw (12,700 Kcal./hr.)
RECEIVER/DRIER
Type
Assembly includes sight glass with dual (triple) pressure
switch (V6) or pressure sensor (L4)
Internal volume
300 cc (10 fl.oz.)
PRESSURE SWITCH
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A–73
Type
Dual pressure switch
Low pressure control
ON: 205.9
±29.4 kPa (29.9±4.3 psi)
OFF: 176.5
±24.5 kPa (25.6±3.6 psi)
High pressure control
ON: 2353.6
±196.1 kPa (341.3±28.4 psi)
OFF: 2942.0
±196.1 kPa (426.6±28.4 psi)
Triple pressure switch (V6, A/T)
Low pressure control
ON: 196.3
±29.4 kPa (27.0±4.3 psi)
OFF: 176.5
±19.6 kPa (25.6±2.8 psi)
Medium pressure control
ON: 1471.0
±98.1 kPa (213.3±14.2 psi)
OFF: 1078.7
±117.7 kPa (156.4±17.7 psi)
High pressure control
ON: 2353.6
±196.1 kPa (341.3±28.4 psi)
OFF: 2942.0
±196.1 kPa (426.6±28.4 psi)
REFRIGERANT
Type
HFC-134a
Specified amount
700 g (1.54 lbs.)
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