Nanni Q2400 Series, Руководство пользователя

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68
S 07 MAINTENANCE
Thermostat Valve Opening Temperature
1. Push down the thermostat valve and insert a string
between the valve and the valve seat.
2. Place the thermostat and a thermostat in a container
with water and gradually heat the water.
3. Hold the string to suspend the thermostat in the wa-
ter. When the water temperature rises, the thermo-
stat valve will open, allowing it to fall down from the
string. Read the temperature at this moment on the
thermometer.
4. Continue heating the water and read the temperature
when the valve has risen by about 6 mm (0.2 in.).
Specifications
Thermostat’s valve open-
ing temperature
69.5 to 72.5°C
(157.1 to 162.5 °F)
Temperature at which
thermostat completely
opens
85 °C
(185 °F)
CAUTION!
If the measurement is not acceptable, replace the ther-
mostat.
PRESSURIZED FILLING CAP REPLACEMENT
1. Remove the cap from the heat exchanger tapped plug.
2. Reinstall a new heat exchanger cap.
WARNING!
Do not remove the heat exchanger cap while the coolant
temperature is too high. Then loosen the cap slightly to
release the residual pressure before removing it com-
pletely.
CAUTION!
Close the heat exchanger cap carefully. If the cap is loos-
ened or improperly closed, the coolant may leak and
cause the engine to overheat.
CAUTION!
The pressurized cap replacement must be done every 2
years or 500 hours whichever comes first.