Hydraulics training system WS290 | RE 00225-B/12.15
Bosch Rexroth AG 15/104
Safety instructions
2.9
Safety equipment
To protect people, the training system is equipped with the following
safety equipment:
EMERGENCY OFF pushbutton
Hydraulic pressure limitation with the constant pressure system
Hydraulic pressure limitation with the load-sensing system
Mechanical safeguards
Temperature switch for WS290 training system with load-sensing system
Sealed safety valve
The facilities set out are described in more detail below.
On every side of the WS290 training system there is an EMERGENCY OFF
pushbutton which must be within easy reach.
The EMERGENCY OFF pushbutton has to be pressed in order to prevent any
danger for persons or the WS290 training system.
Operation of the EMERGENCY OFF pushbutton interrupts the power supply to
the control in the electrical control box and the function of the connected
actuators. The hydraulic oil supply is switched off and the WS290 training system
is stopped.
The training system may only be operated with a maximum operating pressure
of 50 bar. The pressure has been pre-set at the factory by means of a zero stroke
control and sealed with red painting at the setscrew.
At the pump, a so-called standby pressure of 15 bar has been pre-set and sealed.
The maximum operating pressure is limited by means of a load-sensing pressure
relief valve to 50 bar (industrial hydraulics) or to 60 bar (mobile hydraulics).
To monitor the pressure of practice circuits during teaching, the corresponding
pressure gauges and/or pressure limitation devices are to be integrated into the
practice circuit where appropriate. The instructor is responsible for this.
The following mechanical safeguards exist:
Parking device on the transport rollers
Protective covers at the actuators like e.g. cylinders, motors and load
simulators (depending on the equipment type)
Locking bolts and clamping lever as transport lock at the rotatable load
simulator (depending on the equipment type)
In the Emergency Off circuit, the WS290 training system is switched off at > 50 °C
oil temperature and only switched on again after cooling down to 40 °C
oil temperature.
The pump circuits are protected with sealed safety valves with 70 bar which must
not be adjusted.
EMERGENCY OFF pushbutton
Hydraulic pressure limitation
(constant pressure system)
Hydraulic pressure limitation
(load-sensing system)
Mechanical safeguards
Temperature switch for
WS290 training system with
load-sensing system
Sealed safety valve
