1、 Preparation work
1. Check equipment status: Confirm that there are no leaks in the pump body and pipelines, the lubricating oil level of the bearings is normal, and there are no abnormalities in the motor and electrical circuits.
2. Water injection: Open the top cover of the water tank and inject clean cool water until the water level is close to the overflow port (usually at the window marking). It needs to be filled up for the first use and can be replenished later.
3. Connecting pipeline: Tightly connect the exhaust hose to the pump's exhaust nozzle to ensure sealing.
2、 Start running
1. Turn on cooling water: If the pump body is equipped with a cooling water jacket, you need to first open the cooling water valve and adjust the flow rate to the appropriate range.
2. Power on: After turning on the power, turn on the switch and observe if the vacuum gauge reading rises normally.
3. Adjust the vacuum degree: Control the intake volume through valves to gradually achieve the desired vacuum degree.
3、 Operation monitoring
1. Check the operating status: Confirm that the pump body has no abnormal vibration or noise, the bearing temperature is normal, and the vacuum degree is stable.
2. Water quality management: During long-term operation, it is necessary to regularly replace the water in the water tank to prevent excessive water temperature or pollution from affecting the vacuum degree.
4、 Shutdown operation
1. Close the intake valve: First, cut off the connection between the system and the pump to prevent liquid backflow.
2. Stop the motor: Turn off the power after the pump has completely stopped running.
3. Drain accumulated water: In low-temperature environments, it is necessary to open the drainage valve to drain the accumulated water in the pump to avoid freezing and cracking.
5、 Common problem handling
1. Insufficient vacuum degree: Check the water level, sealing and impeller wear, clean the filter screen or replace the seal.
2. Motor overheating: Check for voltage stability, bearing lubrication status, or impeller jamming issues.
Attention: During operation, it is necessary to avoid overflow caused by high water level in the water tank, or low water level affecting the sealing effect. Long term disuse should drain the accumulated water in the pump and clean the water tank.