This guide is based on industry standards and combines over 30 years of practical experience with centrifugal pumps. It breaks down the key control points of centrifugal pump installation step by step, from equipment pre-installation inspection to precise installation, alignment, and commissioning to verification during the trial operation. By quantifying technical indicators, standardizing operation procedures, and introducing advanced processes, a standardized operation system covering the entire life cycle is established.
Preparation before Installation
Equipment Inspection
- Confirm that the model and specifications of the centrifugal pump meet the design requirements.
- Check for transportation damage to components such as the pump body, motor, and coupling, and verify the integrity of the mechanical structure.
Foundation Verification
Verify that the concrete foundation is stable and level, and make sure that the anchor bolt holes are positioned precisely in accordance with the specifications of the centrifugal pump’s installation dimension drawing.
Tool Preparation
Equip with special installation tools such as a level gauge, a set of shim plates, a torque wrench, and a dial indicator.
Installation Process
Foundation Pretreatment
- Remove impurities from the surface of the foundation and place the set of shim plates (no more than 3 pieces per set).
- Use a level gauge to detect and control the levelness deviation to be ≤ 0.1mm/m.
Positioning of the Pump Body
To guarantee that the center line of the pump shaft and the center line of the foundation are in line, perform hoisting operations to precisely place the pump body and make any necessary preliminary changes.
Fixing of Anchor Bolts
Perform the pre-tightening operation of the bolts and leave an adjustment gap of 2-3 mm. Use a level gauge to calibrate the longitudinal and transverse levelness of the pump.
Secondary Grouting
- After the levelness meets the standard, pour high-strength cement mortar to fix the anchor bolts.
- Maintain the curing period for not least 48 hours.
Alignment and Connection
Alignment and Correction of the Coupling
- Detection: Use a dial indicator to measure the concentricity of the motor and the pump shaft system.
- Control Indicators: The radial offset is ≤ 0.05mm, and the axial skew is ≤ 0.1
Pipeline Installation
- Pipeline Support Specification: The inlet and outlet pipelines should be independently supported to avoid external forces acting on the pump body.
- Vibration Damping Measures: Install flexible joints to reduce vibration transmission and ensure that the pipeline is clean and free of debris.
Electrical Commissioning and Trial Operation
Motor Wiring
- Connect the wires according to electrical specifications, test the insulation resistance (≥ 1 MΩ), and confirm that the rotation direction is consistent with the pump’s marking.
Trial Operation
- Manually turn the rotor to confirm there is no jamming.
- Jog the motor to check whether the current and vibration are normal.
- Run the pump without load for 30 minutes, gradually increase the load to the rated working condition, and monitor the bearing temperature (≤ 75℃), leakage, and noise.
Precautions
- Dry running is strictly prohibited. The pump should be filled with liquid and vented before starting.
- Regularly check the tightness of the anchor bolts and the lubrication status.
Conclusion
Centrifugal pumps can have a lower failure rate and a longer service life if the installation guidelines and dynamic maintenance techniques in this handbook are followed. Full-process technical support is offered by Yantai Longgang Pump Industry Co., Ltd. if you require a skilled crew to complete an installation swiftly and efficiently. Our 20-year-experienced engineering team guarantees that your pump set will be successfully commissioned on the first try.
To get centrifugal pump products from Yantai Longgang Pump Industry Co., Ltd., get in touch with us right now or visit our official website. Allow our skilled professionals to ensure the stability of your system!
