The compressor oil station needs to be tested in the manufacturer’s facility – how should it be inspected? Guidance from experts appreciated

First, it is necessary to check whether all the configurations specified in the technical agreement meet the requirements (material, model, manufacturer, and performance parameters)； Secondly, it is necessary to consider the operating conditions and adjustment performance (such as filter switching issues, etc.)

Acceptance in accordance with the technical specifications is a must; we need to check the brands and performance requirements of the valves, motors, and pumps. Personally, I think it’s essential to ensure that the welding quality is satisfactory – our factory has already suffered losses because of this. To put it simply, the manufacturer did not follow the specifications properly during the welding of the double-tube filter; as a result, during the process of starting both pumps in sequence at the oil station, the overpressure caused the welds to tear apart, and the unit stopped operating immediately.

I’m also seeking help; I hope experienced experts can give some guidance. Thank you

In addition to what was mentioned above, attention must also be paid to the operation of electrical equipment and the temperature rise of motors. The auxiliary oil pump should start automatically when the oil pressure drops, and it should stop automatically when the oil pressure rises.

Well, it’s necessary to check each item according to the agreement, such as the material and brand of various components, welding records, pressure testing records, etc. From experience: 1/ It is necessary to run the system with oil for 4 hours, and check the pressure difference before and after the filter; this difference should not increase too much. Otherwise, it indicates that the pipelines have not been cleaned properly, and cleaning them on-site will be very difficult. Once the testing is complete, it is necessary to check the packaging before shipment to ensure that the pipelines are not contaminated during transportation. Otherwise, it’s very painful to wash it on site ； 2. It is necessary to test whether the online switching of the dual filters works properly. Of the dozen or so sets we used before, only a few could be switched online; most couldn’t be switched online at all, which was very troublesome ； 3. It is necessary to check the automatic switching between the primary and backup pumps. It is particularly important to pay attention to whether the bypass return oil line is unobstructed. My previous mistake was that when the main pump and the backup pump were turned on at the same time, the flow rate in the pressure regulation bypass was too high, causing lubricant to spill everywhere. Of course, there are also some issues, such as the fact that you only have a lubrication sledge; in the case of a shaft-mounted pump, the problem lies in how to simulate this type of pump. Well, we need to see how other experts handle it.

1. Check whether the materials of the filters, heat exchangers (including tubes and tube sheets), oil tanks, and pipelines are in accordance with the agreement? Does the weld meet the standard requirements? 2. Check whether the purchased parts are from the manufacturer specified in the contract? 3. Does the process match the provided PID? 4. Start the 4-hour operation test – do all the indicators meet the requirements specified in the design documents? 5. Check the cleanliness inside the fuel tank and fuel filter (this step is very important; in our case, several screw pumps have suffered damage to their screws after being operated for an extended period of time on site)

1. Self-start test of oil pump, online switching, soft start time； 2. Nitrogen charging pressure and buffering time of the accumulator ； 3. Corresponding speed of the self-acting control valve ； 4. Can the above three elements ensure that in the event of a failure of the main unit, a backup unit will start automatically, and that the oil supply pressure and flow rate will not cause the unit to shut down? ； 5. For the jacking oil pump, special attention must be paid to ensuring that pipeline stress is completely eliminated; otherwise, leaks after installation will cause significant problems ； 6. Cleanliness of pipes, fuel tanks, etc., and whether the wall thickness of bent sections meets the requirements ； 7. The height of the high-level oil tank – whether its capacity is sufficient to meet the design requirements of the entire unit ； 8. The Pore filters and oil coolers can be switched online ； 9. Design requirements for oil heaters, resistance to aging of wiring, etc.