Weber Rescue Systems E-FORCE3 - Hydraulic Supply

STRUCTURE AND FUNCTION | 27
4.2 Hydraulic supply
Drive
The baery-operated appliances are powered by a 28 V DC motor. When the appliance
is switched on, the motor idles. Only when the rocker switch is operated does the motor start
to run at a higher speed.
Pump
The hydraulic pressure is generated by a high pressure hydraulic pump (in the pump unit).
The pump is a radial piston pump with 3-4 pump elements. The pressure is applied directly
to the working cylinder, which renders the connecon lines redundant.
Oil tank
The oil volume for operaon is taken from a tank. The enre
hydraulic system is therefore completely closed and free of air. Any possible
volume expansion caused by heat is compensated for by the tank.
Hydraulic oil
All baery-powered appliances should use a special hydraulic oil for rescue equipment
in accordance with WN61000137. The oil does not usually need to be changed, but we
recommend changing it aer 10 years. An oil change can only be carried out by factory
servicing at WEBER RESCUE Systems.
CAUTION!

The complete hydraulic system is designed as a closed circuit and must therefore be
completely free of air. For this reason, do not aempt to carry out repairs on the drive, to
ensure that no air can enter the system!