refrigeration system, the fusible plug will metal so as to
drain off the high-temperature and high-pressure coolant
when the temperature and pressure inside the reservoir
reach the specified value, which protects the
refrigeration system.
4. Introduction to the expansion valve and pressure
switch
1) Expansion valve
Chery A15LHD adopts the traditional thermo-expansion
valve, as shown in the figure, fixed on the inlet/outlet
pipes of evaporator.
The temperature sensor inside the expansion valve
adjust the opening of ball valve in accordance with the
temperature of coolant located at the evaporator outlet,
the purpose of which is to control the flow rate of
coolant.
2) Pressure switch
Chery A15LHD’s A/C pressure switch adopts the
dual-pressure (high and low pressures) and four-wire
pressure switch which is installed on the high pressure
pipe located at the front end of expansion valve, with 50
PSI or more of low-pressure CLOSE operation and
220 PSI or more of high-pressure CLOSE operation
5. Removal/Installation and inspection of evaporator
(1) Drain off the coolant from the system (see the
coolant recycling procedure)
(2) Remove the expansion valve
(3)
Remove the instrument panel (see the
Disassembly/Assembly of Instrument Panel)
(4)
Remove the control panel trim plate, and 4
self-tapping screws used to secure the control panel
and console. (tightening torque of 1.5±0.2N·m)
(5) Remove 1 bolt (M8*25) and 4 nuts secured with the
steering crossbeam and front side respectively
(tightening torque of 3.5±0.2N·m) from the fixed
evaporator.
(6) Remove the four bolts from the evaporator.
Inspection of evaporator:
U-18