OPERATING INSTRUCTIONS 6015 / RH40E Operation

Preheating system for engine and hydraulic oil (optional)

Preheating system for engine and hydraulic oil, function

The preheating system consists of heating elements for engine oil, engine coolant and hydraulic oil.

At low outside temperatures, the system facilitates starting of the engine and ensures that the hydraulic system reaches its operating temperature faster.

The preheating system is operated electrically with an external supply voltage. This voltage is available at a socket outlet in the frame of the superstructure near the oil cooler.

(The system has been set at the factory for a standard supply of 400 volts, threephase AC. Other voltages are available on request.).

Switching the preheating system for engine and hydraulic oil on and off

Risk of an electric shock.

Check first:

Insulation of the socket outlet on the machine in good condition?

Insulation of the connecting cable in good condition?

Connect the system to the power supply only if the insulation of the components is in perfect condition.

Observe the national safety regulations to be applied in the presence of electric current.

When the temperatures of the engine oil, engine coolant and the hydraulic oil are below -10°C:

 Connect the system to the external power supply.

 Switch on the preheating system with switch (51, Fig. 2-36:).

The pilot lamp (24, Fig. 2-37:) lights up.

 Switch off the preheating system with switch (51, Fig. 2-36:) when the engine and the hydraulic system have reached a temperature above 0°C.

The pilot lamp (24, Fig. 2-37:) goes out.

 Switch on the fuel preheating system (see "Fuel preheating system (option)").

Fuel preheating system (optional)

Fuel preheating system, function

At temperatures below 0°C, the paraffin particles contained in the diesel fuel begin to clump together. They form flakes which clog up the fuel lines and the filters. Starting of the engine is then no longer possible.

To prevent this, the diesel fuel must be preheated. Preheating is effeceted by means of two heating elements in the fuel line. The heating elements are attached to the engine.

They are equipped with internal thermostats ensuring an automatic temperature regulation.

Switch on the fuel preheating only after preheating of the engine and of the hydraulic oil is terminated (see "Preheating system for engine and hydraulic oil (option)").

The preheating time is dependent on the outside temperature.

Switching the fuel preheating system on and off

 Switch on the ignition by turning key-switch (72, Fig. 2-38:) to position 1

 At temperatures below 0°C, switch on the fuel preheating with switch (55).

The pilot lamp (31, Fig. 2-39:) lights up.

 Start up the engine by turning key-switch (72, Fig. 2-38:) to position 3 (see also "Starting and stopping the engine").

 Switch off the fuel preheating with switch (55), when the engine has reached its operating temperature.

The pilot lamp (31, Fig. 2-39:) goes out.