A4VSO180LR2G/22R-PPB13N00A4VSO180DR/22R-VPB25N00A4VSO180DR/22R-VZB13N00Rexroth axial piston pump imported from Germany

Pipeline requirements:

1) Inlet pipeline:

a) Diameter ≥ pump inlet port diameter (recommended to increase by 10% to reduce resistance);

b) Minimize bends (≤2 bends within 1 meter);

c) Use seamless steel pipes or high-pressure hoses (avoid plastic pipes that are easy to collapse);

d) Install a suction filter (filtration accuracy 25 μm, flow ≥ 1.5 times the pump rated flow).

2) Outlet pipeline:

a) Pressure rating ≥ 35 MPa (peak pressure);

b) Install a check valve near the pump outlet to prevent oil backflow;

c) Reserve a pressure gauge interface (for real-time pressure monitoring);

d) The pipeline should be fixed with brackets to avoid vibration resonance.

Pre-commissioning preparations:

1) Oil tank and pipeline: Clean the oil tank (remove welding slag, rust) and rinse the pipeline with clean hydraulic oil;

2) Oil filling: Fill the oil tank with qualified hydraulic oil to the upper scale, and manually inject oil into the pump inlet until oil overflows from the vent plug;

3) Filter check: Confirm the suction and return filters are clean and correctly installed;

4) Valve setting: Set the system relief valve to the minimum pressure (5-10 MPa);

5) Electrical check: Confirm the motor rotation direction matches the pump's "R" (clockwise) mark;

6) Leakage inspection: Check all pipeline joints and pump seals for loose connections.

Step-by-step commissioning:

1) No-load test: Start the motor at low speed (500 rpm) for 5 minutes, check for abnormal noise, pump body temperature (≤40℃), and no leakage;

2) Low-pressure test: Increase the motor speed to 1000 rpm, adjust the relief valve to 10 MPa, run for 10 minutes, and check the pressure stability and oil flow;

3) Rated pressure test: Gradually increase the pressure to 31.5 MPa (rated), run at 1500 rpm for 30 minutes, monitor pump body temperature (≤60℃), control valve response, and system pressure fluctuation (≤0.5 MPa);

4) Load-sensing test: Activate the executive component (e.g., cylinder), check if the pump displacement automatically adjusts with the load (flow increases when load is light, decreases when load is heavy);

5) Shutdown inspection: After stopping, check the oil level, filter contamination, and seal integrity.