Gearbox Control; Engine Speed Control - Man D2868 LE433 Operating Instructions Manual

Gearbox control

When emergency running mode is active, the gearbox is engaged in the neutral, forwards or astern posi­
tions by means of 3 button functions:
Key Shift gearbox to neutral position
Key Shift gearbox to forwards position
Key Shift gearbox to reverse position
Gearbox reversal will only take place when the engine speed is in the idle range.
It is advisable always to engage the gearbox in neutral first prior to a reversal operation.
If however the operator requests a reversal e.g. from forwards directly to astern (or vice versa) and the en­
gine is at a higher speed, the engine is automatically set to idle speed prior to each active reversal opera­
tion.
The relevant pressed button flashes until the desired status is reached.
It goes out when another control command is given or lights up permanently to indicate that gearbox re­
versal has taken place (indication of actual status).

Engine speed control

Once the gearbox is engaged in the forwards or reverse position, the current engine speed can be in­
creased or reduced by means of 2 button functions:
Key Increase engine speed
Key Decrease engine speed
As long as the + or - keys are pressed ("insert button symbol"), there is a continuous change in the engine
speed.
The increase or alteration rate is 50 revolutions / seconds.
Each individual short pressing of a button brings about a speed change of 10 engine revolutions.
The engine speed is restricted downwards to the idling speed and upwards to the maximum permitted en­
gine speed.
Commissioning and operation
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