PGO BR-500, Руководство по обслуживанию

Страница: 279 / 330

- Connect the injection diagnostic tester and
select the menu on the "ERRORS" function.
- Check any failures in the electric fan control
circuit (see
[11]?Injection ?/span> hapter).
Specific equipment and tools:
Injection diagnostic tester020460Y
- Select the menu on the "ACTIVE
DIAGNOSIS" function and start the electric
fan operation simulation (see
[11]?Injection ?
charter).
- If the electric fan is certainly efficient, check
the ventilation start and end temperature.
- Select the menu on the "PARAMETERS"
function to display the cooling fluid
temperature.
Electric fan start: 107?C
Electric fan stop:
103?C
- If non-conforming values are detected,
replace the injection controller (see "Injection"
chapter).
- If the analogue instrument temperature is
close to the red zone, but the degrees
indicated by the diagnostic tester is below the
electric ventilation temperature, check the
temperature sensor on the head and the
relevant injection circuit
(see
[11]?Injection ?
chapter).
N.B.: The electric ventilation temperature at 107?C can only be managed
with a system supplied with a 50% mixture and pressurised at 0.9 bar.
Avoid starting the engine without pressurisation since it may reach the boiling temperature
before the electric ventilation starts.
In case of increase of the electric ventilation time, check the thermostat opening temperature
and check that the cooling fluid density is correct. The optimum density is obtained with a
50% water and cooling circuit fluid mixture.
P.4-7
PGO BR-500 ENGINE
Cooling System