Hydraulic Adaptation Between The Brv And The Rail-Road Digger - GEISMAR BRV Operation & Maintenance Instructions Manual

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Hydraulic adaptation between the BRV and the rail-road digger

Most hydraulic diggers are fitted with 2 hydraulic systems fitted at the end of the boom.
To connect the BRV, select a system whose flow rate is:
- 120l/min to supply the motors;
- 30l/min to supply the hydraulic cylinders;
Connect the BRV by identifying the fittings.
It is essential that the digger is fitted with a return system to the hydraulic tank.
The hydraulic couplings must be supplied by the client to avoid any risk of incompatibility.
They can be assembled on site by our assembler.
4 supply pipes are required, namely:
1 x supply (P): continuous flow rate of 120l/min with pressure of 180 bar, tube end swivel nut
connector M42x2 in accordance with DIN3865;
1 x primary return (T): flow rate of 120 l/min, tube end swivel nut connector M42x2 in
accordance with DIN3865.
- 2 x control valves (A and B): flow rate of 30 l/min with pressure of 150 bar, tube end swivel
nut connector M36x2, 24° cones in accordance with DIN3865.
To supply the cylinders:
Connection is to A (for raising) and B (for lowering) of the chosen control valve.
When starting the BRV, it is essential to set the pump flow rate to 120 l/min and 180 bars to
supply the motors. Setting should preferably be performed by the digger manufacturer.
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The customer must provide the quick-release couplers to ensure they are compatible with the
shovel used.
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When changing the hydraulic shovel, these flow rate settings must be checked.
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