ZUOSEN manufactured Rexroth A10VSO1000DFR1/31R-PPA12N00 which is one of the world's leading manufacturers and suppliers of professional hydraulic pumps.
To protect your rights please read the following carefully

Bleeding air
It may be necessary to bleed air from pump case and outlet line to remove causes of vibration. An air bleed valve is recommended for this purpose.
Starting
Before first staring, fill pump case with clean operating oil via the filling port. In order to avoid air blockage when first starting, adjust the control valves so that the discharged oil from the pump is returned direct to the reservoir or the actuator moves in a free load.
Setting Discharge Pressure and Delivery
At the time of shipment, the unit has been preset to maximum delivery and minimum discharge pressure.
Adjust the preset delivery and pressure to meet your system requirements.
Adjustment of Discharge Pressure
Turning the adjustment screw clockwise, increases pressure.
 

FAQ
Q: Are you trading company or manufactory?
Re: We are manufactory.
Q: How long is the Warranty?
Re: One-year warranty.
Q: What is your payment terms?
Re: 100%  in advance, long-term dealer 30% in advance, 70% beofre shipping.
Q: How about the delivery time?
Re: Normal Models within 2 days, unusal models and bulk order  within 5-10 days.