As the core equipment for precise dosing of industrial fluids, the installation and commissioning quality of SEKO dosing pumps directly affects system stability and process accuracy.This article combines technical specifications and engineering practice to systematically outline the key steps from site selection to acceptance.

　　1、 Preparation before installation: dual guarantee of foundation and environment

1. Site selection principle: The pump body of the Saigao dosing pump should be installed in a dry and ventilated independent space, avoiding direct sunlight and corrosive gas erosion. It is recommended to reserve a distance of at least 1.2 meters for operation to facilitate later maintenance. If wall mounted installation is used, original supporting brackets must be used and the load-bearing capacity must be ≥ 50kg.

2. Foundation treatment: The flatness error of the concrete foundation should be ≤ 2mm/m. When fixed with M12 expansion bolts, shock-absorbing rubber pads need to be added. For mobile installation scenarios, it is necessary to equip universal wheels with locking function to prevent displacement during operation.

3. Pipeline pretreatment: The suction pipeline should be made of 304 stainless steel material, with a length of ≤ 3 meters and no more than 2 bends. The outlet pipeline needs to be equipped with a back pressure valve to prevent siphon phenomenon. After the pipeline connection, a pressure holding test at 1.5 times the working pressure is required.

　　2、 Core installation steps of Saigao dosing pump: precise docking to ensure performance

1. Electrical connection specifications: Use 3 × 2.5mm ² cables provided by the original factory, with a grounding resistance of ≤ 4 Ω. For explosion-proof areas, junction boxes with ExdIIBT4 protection level should be selected. The control circuit of the frequency converter should be laid in separate slots from the power circuit, with a spacing of ≥ 300mm.

2. Key points for pump head assembly: Before installing the diaphragm, the contact surface needs to be cleaned with isopropanol, and the bolts should be tightened three times in diagonal order, with the final torque value reaching 4N · m. After installation, manual turning is required to confirm that the diaphragm movement is not stuck and the travel error is ≤± 0.5mm.

3. Attachment configuration standard: The set pressure of the safety valve should be 1.1 times the rated pressure of the pump, and the discharge port should be led to a safe area. The liquid level switch should be installed at a height of 1/3 from the bottom of the tank, and the contact capacity should meet the requirements of AC220V/5A.

　　3、 Debugging key technology: parameter matching and performance enhancement

1. Flow calibration method

Calibration using weighing method: Install an electronic scale in the outlet pipeline and record the mass change after running for 30 minutes. For a 50L/h pump model, the deviation between the measured flow rate and the set value should be ≤± 2%.

2. Stroke adjustment technique: During initial debugging, set the stroke length to 50% and gradually optimize it by adjusting the knob. For media with viscosity greater than 50mPa · s, the stroke frequency should be reduced to below 30Hz to prevent excessive stretching of the diaphragm.

3. Alarm system testing: When simulating a low liquid level alarm, the relay contacts should activate within 3 seconds after the liquid level drops to the set value. The overload protection test requires increasing the load to 120% of the rated current and observing whether the thermal relay cuts off the power within 15 seconds.

　　4、 Typical problem handling: Quick diagnosis to ensure smooth operation

1. Failure to suck liquid: Check if the bottom valve filter is clogged (recommended to clean once a month), and confirm the airtightness of the suction pipeline. For high viscosity media, the stroke frequency needs to be increased to above 60Hz.

2. Flow fluctuation handling: If the pressure gauge reading of the pulse damper fluctuates by more than 0.05MPa, the sealing of the one-way valve needs to be checked. The position of valve ball wear can be located using an acoustic emission detector, and the replacement cycle is usually 2000 operating hours.

3. Motor overheating warning: When the temperature rises above 65 ℃, it is necessary to check whether the cooling fan is running normally. For places where the ambient temperature is above 40 ℃, it is recommended to install axial flow fans for forced cooling.

By strictly following the above technical specifications, it can be ensured that the Saigao dosing pump achieves a measurement accuracy of over 98% and a problem free operation of over 100000 hours. It is recommended to conduct a comprehensive inspection every 500 hours of operation, with a focus on monitoring diaphragm fatigue and seal aging.