All ventilating channels should be open.

The engine should be heated-up and work at frequency of rotation about 2000 mines-1.

The fan should work on high speed «4».

The handle of a temperature regulator should be transferred to the situation "COLD".

The switch «Move А/С» should be translated in the situation "On".

Glasses should be in the doorway lifted, doors are closed.

Indications of temperature should be read out on the left ventilating channel after compressor switching off.

Fig. 14.22. Dependence of air temperature on an exit from the conditioner from temperature of zabortny air

Fig. 14.23. Dependence of pressure in the conditioner (a site of low pressure) from temperature of zabortny air. The top curve — turning on of the compressor by the conditioner thermostat, bottom — switching off

Fig. 14.24. Dependence of pressure in the conditioner (a site of a high pressure) from temperature of zabortny air. The fan on high speed of rotation turns on in a point And (pressure growth) and is switched off in a point In (pressure drop)

Serviceable central air should provide the characteristics provided on fig. 14.22, 14.23, 14.24 .