Mazda TC070-15-01H, Руководство для студентов

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AIR CONDITIONING
03 - Conducting a Performance Check
SG03-2
TC070-15-01H
5. Operate temperature select control throughout its range and confirm that the
airflow temperature matches the setting. Start with the control in the coolest
setting and slowly increase temperature to highest setting, then back to original
setting. Does the temperature match the control setting?
Yes No
(If no, repair according to workshop manual directions.)
6. Turn off engine.
INFORMATION POINT
A small temperature difference between the setting and the actual duct
temperature is normal. The duct temperature will usually be cooler than the interior
temperature. This is because the evaporator is concentrated in the small area of
the duct very close to the evaporator.
Gauge Installation
Install R-134a Refrigerant Pressure Gauge Set according to the workshop manual.
a. Confirm that high and low valves are closed.
b. Remove caps from charging ports.
c. Connect the quick disconnect couples to vehicle charging ports and open line
valves.
NOTE
Support A/C lines during coupling. Excessive pressure can cause damage to
unsupported lines.
Refrigerant Pressure Check
2. Place a dry-bulb thermometer in the driver-side center ventilator outlet.
3. Close all doors and windows.
4. Set A/C controls for maximum cooling with:
a. temperature to full cold
b. airflow to face/vent to Vent
c. fresh/recirculate control to Recirculate
d. activate compressor with fan speed high
5. Start engine and hold at 1,500 rpm.