OM 803 us – Edition 3.7 * 803b340.fm 3-63
Operation
3.18 Dual Power (option)
Dual Power enables zero-emission working by means of an electrohydraulic power unit
(Wacker Neuson HPU8) or conventional working with the diesel engine.
If the machine is equipped with the Dual Power option, hydraulic hoses are connected to
the undercarriage of the machine.
Accident hazard due to incorrect operation of the hydraulic power unit!
Can cause serious injury or death.
• Do not allow anyone to stay in the danger zone of the excavator.
• The power unit must be at the same level as the excavator.
• The operator must have permanent visual contact with the power unit.
• Do not pull the power unit with the hydraulic hoses.
• – see chapter Dual Power (option) on page 2-17
In order to avoid damage to the machine, Wacker Neuson recommends
operating the 803 compact excavator in dual-power operation only with the
HPU8 power unit.
During operation with a zero-emission power unit, there must be no biode-
gradable hydraulic oil in the excavator or power unit.
The optimal performance of the 803 compact excavator in dual-power opera-
tion can only be ensured with the HPU8 power unit. However, if the maximum
excavator connection values – see chapter 6.6 Connection values of Dual
Power option on page 6-3 are complied with, and if the hydraulic oil of the
power unit and excavator is identical, other brands can be connected, too.
Do not travel across flexible hydraulic lines or connecting cables.
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