BA 348-01 * 2.0 * 34801b330.fm 3-33
Operation 3
3.19 Oil and fuel preheater (option)
This equipment is for cold-starting at temperatures below −5 °C.
Oil preheater operation
The engine and hydraulic oil is heated by means of heating elements with a capacity of
750 W in the engine oil pan and in the hydraulic oil reservoir, according to the gravity
principle (warm oil rises and is replaced by cold oil). The oil can only be thoroughly
warmed up to operating temperature if the oil preheater is connected over a longer
period of time – preferably over night.
The oil preheater (option) reduces pollutant emissions during the warm-up
phase by up to 60 % and saves fuel at the same time.
☞Connect the oil preheater as follows:
• Park the machine near a 220 V (110 V) mains socket
• First connect the special cable to machine socket A (at the rear left), then connect the
connector to a 220 (110) V mains socket
☞Before starting the engine:
• Remove the plug from the mains socket
• Unplug special cable from machine socket A
• Close the engine cover
☞Start the engine
Fuel preheater operation
The fuel preheater prevents paraffin crystals forming, which otherwise clog the fuel filter at
low temperatures.
A temperature switch automatically switches on a heating element in the fuel line between
the tank and the fuel prefilter when ignition is switched on at temperatures below + 10 °C.
Fig. 58 : Machine socket
A
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