Komatsu Utility 69001, Руководство по эксплуатации и техническому обслуживанию

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OPERATION
OPERATION
3-72
REMARK
Regardless of the ambient temperature, if the key in starting switch (2) is turned from OFF position to left, preheat-
ing pilot lamp (3) will light up and preheating will start. (Preheating continues while the starting switch is held at the
left.)
For the details of the preheating time, see the table in Step 5.
While preheating is being carried out, the preheating pilot lamp (3) lights up to show that preheating is being car-
ried out.
If the engine does not start with the above operation, wait for about 2 minutes, and repeat steps 3. And 4.
The relationship between the actuation time of the turbo protect function and the engine coolant temperature is as
follows.
Even if the fuel control dial is operated within the time given below, the engine speed will not change.
Turbo protect function
The turbo protect function is a function to protect the turbocharger by keeping the engine speed at less than 1000
rpm immediately after the engine is started.
When the turbocharger protection function and engine cooling water auto warming-up function are activated at the
same time, the former takes priority over the latter.
q
While the turbocharger protection function is in operation, the engine revolution is held at 1000 rpm even if the
fuel control dial is set at above 1000 rpm.
q
While the turbocharger protection function is in operation, the engine revolution is held at 1000 rpm even if the
fuel control dial is operated.
q
When the turbo protect function is canceled, the engine speed is set to the speed for the position of the fuel
control dial.
q
The relationship between the length of time of actuating the
turbo protect function and the temperature of the engine
coolant is as shown in the next table.
Engine Cooling Water Auto Warming-up Function
This is a function to automatically warm up engine cooling water more quickly by raising an engine idling speed.
When the turbocharger protection function and engine cooling water auto warming-up function are activated at the
same time, the former takes priority over the latter.
q
While the turbocharger protection function is in operation, the engine revolution is held at 1200 rpm even if the
fuel control dial is set at any rpm. However, if the fuel control dial is held at the engine full speed (MAX) for
more than three seconds, the engine will gradually pick up the speed up to the full idling.
q
This function continues to work for a maximum of 10 minutes, or until the engine cooling water temperature
reaches 30°C.
q
If the deceleration pedal is depressed while this function is in operation, the engine rpm goes down below
1200 rpm.
Coolant
temperature
Turbo protect
time (sec.)
Above 10°C 0
10 to -30°C Change 0 to 20