2.1.6. Check of valves of a cover of a radiator

Fig. 2.6. A special adapter for connection of a cover of a radiator to a tester


Use a special adapter for connection of a cover of a radiator to a tester (fig. 2.6).
Increase pressure until the arrow of the manometer does not stop (pressure of opening of the valve).
Pressure of opening of the main valve: 83–110 kPa.
Pressure of opening of the vacuum valve: 7 kPa.
Make sure that pressure of operation of valves of a cover or corresponds to nominal rate, or slightly above it.
Replace a radiator cover if pressure of operation of valves is lower than nominal rate.

NOTE
Before check be convinced that a radiator cover pure as the rust or other foreign substances on sealing laying of a cover can serve as the reason of the wrong indications of the manometer.