Liebherr EP 944 C Stationary Material Handler - Manual (Page 11)

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11 EP 934 C EP 944 C EP 954 C Material Handlers
Economy
Investing in the acquisition of an electric excavator is a great long-term advan-
tage. Constant increases in the costs of conventional energy sources are push-
ing up operating charges, and reducing profi t margins considerably. Environ-
mental criteria, in particular CO
2
emissions, are also playing a constantly greater
part in the choice of power systems and working methods. With the electric
drive, Liebherr offers an economical alternative to conventional diesel-engine
machines, and a solution with real respect for the environment.
Flexibility and versatility Liebherr electric Material Handlers are multi-task-
ing machines. With a wide range of tools, which
can be combined with Liebherr quick-coupling
systems, they can create a degree of fl exibility and
versatility which has no comparison anywhere.
Energy costs cut The energy yield from an electric motor is greater
than that of a diesel-engine. Delivering the same
kW output in hydraulic power costs three to fi ve
times less with an electric excavator than with a
diesel-engine unit. Liebherr excavators deliver the
full power from their kinematic chain and at a lot
less cost.
Increased service life The smooth actuation of the electric drive and the
reliability of Liebherr hydraulic components mean
that the maintenance costs of the excavator can be
reduced considerably.
The absence of vibrations and variations in output
from a motor, which operates on a torque principle
and at constant output, means that the stress on
the kinematic chain can be reduced and the op-
tional pre-heating of the hydraulic system allows
for the hydraulic oil to be kept at an optimum tem-
perature right from the start.
Maximum availability The costs associated with maintenance opera-
tions are reduced to a minimum, and that also cuts
downtimes. The electric motor does not require any
maintenance beyond lubrication of the bearings
every 3,000 hours. No fi lters (air, oil) to be changed
and no draining of engine oil throughout the entire
service life of the machine.
Kinematic chain made by Liebherr
• Constant provision of power
for the kinematic chain
• Reduced wear of hydraulic
components
• Optimum exploitation of the hydraulic
power potential of the system
Battery
• Zero Grams emission of CO
2
• High yields
• Reduced costs
• Environmentally friendly
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