NANO

HVAC

855

HVAC

PRESSURE TEST USING MANIFOLD GAUGES

This is a method where trouble is detected and repaired by using manifold gauge. The manifold gauge indicates

the refrigeration cycle high and low pressure side pressures on the respective gauge.

(a) Under Normal operation manifold gauge should show following readings:

NOTE:

Make sure following conditions are fulfilled before getting the correct gauge readings (after the engine has

warmed - up)

Engine Speed

1500 rpm

A/C inlet temperature

30° - 35° C (86° - 95° F)

Blower Speed

Temperature control

Maximum cooling

Reference value before AC operation at both

5-8 kg/

(0.5 - 0.8 MPa)

high and low pressure sides