Volvo REMU, User Manual, Page: 10 / 44

USER MANUAL
10
2.2 Hydraulic Horsepower Requirements
If the carrier cannot provide the required flow, pressure and/or the required
hydraulic horsepower then the screening bucket’s maximum efficiency will
not be achieved. Carrier flow, pressure and horsepower requirements can
be obtained from the manufacturer or distributor of the carrier. If the
carried hydraulic capacity is unknown then a flow test will have to be
carried out by a suitably competent person. These flow and pressure tests
will have to be recorded to ensure an accurate record is kept or warranty
registration purposes.
2.3 Testing of Hydraulic Requirements
It is in the interest of a trouble free commissioning process and long term
service life that the hydraulic performance of the proposed carrier be
measured, adjusted and recorded to ensure that the carrier is providing the
required flow and pressure. Using a serviceable flow meter installed in the
delivery lines that the screening unit will be fitted to is the only effective
method to determine accurately the carrier’s hydraulic performance.
Please note
that some modern construction machinery have flow and
pressure sensors that provide readings on a liquid crystal display located in
the cab. It should be noted that this feature only provides a theoretical
indication and should not be relied upon. The flow and pressure must be
physically checked to ensure accuracy. (Please refer to flow, pressure and
horsepower details).
2.4 Flow Rates
of Excavators
It should be noted that modern excavators are capable of producing more
flow than required for the screening bucket. The flow to the screening
bucket circuit must be restricted to the maximum allowable flow (please
refer the specification table). If the flow exceeds the recommendations, the
unit will suffer over speed that will result in an early failure of the drive
chains and motors.