Scarab Mistral - Operating in sweep mode; Reducing noise levels and fuel consumption; Starting the auxiliary engine

Mistral Operating Instructions
Part No. SCAZ037980 v6.0.2 16 E&OE
Operating in sweep mode
Reducing noise levels and fuel consumption.
Although it is important to always operate within the engine’s optimum speed range, there are times when it is possible to reduce engine speed to the lower end of this,
thereby reducing noise levels. This is most beneficial when sweeping at night, or in areas sensitive to noise pollution. Sweeping at reduced engine speeds can be achieved
most satisfactorily when sweeping light or sparsely distributed materials. Experience will enable the operator to vary engine speed, according to sweeping conditions,
without affecting sweeping performance.
It should be noted that the operator also benefits from reduced noise levels within the cab and that any reduction in engine speed, also results in a corresponding reduction
in fuel consumption.
Starting the auxiliary engine
When the sweeper’s ignition is turned on the following events occur:
• The CANbus system checks that all control nodes are present and functioning correctly and the LCD Monitor turns on, briefly displaying the FAYAT logo (for approx. 10 sec-
onds) before changing to display a basic truck graphic as well as the suction fan and auxiliary-engine speed scales.
If a system error is detected at this stage, the ‘Fault Active’ symbol will illuminate.
To identify the error, refer to the Options Screen menus (Driver’s Fault Codes) on page 35.
• The auxiliary engine’s pre-heating cycle will commence.
To Start the auxiliary engine, proceed as follows:
1. Press and hold down the System Start/Stop switch until the engine starts. When the engine starts, its default IDLE speed (1200 rpm) will register on the top right-
hand section of the LCD monitor. With the engine running, the system is now effectively in Sweep Mode and a number of symbols representing the installed sweeping
equipment will appear superimposed on the LCD monitor truck graphic.
2. On the control panels, select the desired sweeping equipment and activate the suction fan. Engine speed will automatically increase to one of two default settings as
and when selected (overhead wander boom controls are external):
Operational modes and engine speed:
• Normal operation 1200 rpm
• Fan/High pressure pump operation 1600 rpm
• Fan boost 1700 rpm
• Overhead wander boom 1800 rpm