Pump to reach the conditions when the site ready to install, be sure to install the instructions correctly installed to ensure that the pump can operate normally, now to talk about the pump installation, maintenance and repair methods. Pump First, the installation of pumps (1) Installation Preparation 1. Check the tools and lifting machinery, and check the basis of the machine. 2. Check the pump and motor to ensure that there is no damage during transportation and handling. (2) the order of the pump installation 1. Pump suction pipe and discharge pipe should have their own support, not allowed to pipe weight directly by the pump. 2. Install the pump according to the level of the basic level of leveling, to be set after the foundation cement pump installed on the basis of the level and check the level, such as uneven, the use of horn adjustment, until the level, and then through the grouting hole by the concrete irrigation Base and anchor bolt holes. 3. When the pump is installed above the liquid level (within the allowable suction range of the pump), a bottom valve should be fitted to the end of the suction line and a filling hole or valve should be provided in the drain line for pre- Use. When the pump is installed below the liquid level, install the control valve on the suction line. 4. Pump installation height must be based on NPSHr NPSHr requirements to avoid cavitation. 5. Pump shaft and motor rotation direction should be the same, otherwise, to three-phase asynchronous motor as the power, as long as any two of the three leads in the exchange position can be connected. 6. After the cement is dry, check whether the base and anchor bolts are loose. Tighten the bolts of the anchor bolts when appropriate, and finally check the level of the entire unit. If there is a slight unevenness, it can be leveled with the inclined iron. 7. The entire pump arrived at the scene, have installed a good motor; leveling base, you do not have to remove the pump and motor. (3) pump assembly packing seal should be noted by loading 1. Sleeve cylindrical runout is not greater than 0.05mm. 2. Filler interception, take the mouth into 45, and according to the shaft before the installation, the size of the filler in a special mold top pressure plastic. 3. Packing into the filler cavity, lap each lap lap at staggered, in the car before the gland required to release, gradually compress the pump after the assembly sequence can be reversed in accordance with the demolition order. When installing the mechanical seal should pay attention to several points: 1. Rubber O-ring for damage, swelling, if any, must be replaced. 2. Moving, static ring surface to maintain absolute clean and coated with a small amount of oil. (4) Pump Disassembly 1. Remove the rotating part of the mechanical seal and the bushing from the shaft, and remove the bushing with the packing seal. 2. Loosen the impeller nut, remove the impeller and flat key. 3. Remove the bearing body bracket and coupling. 4. Remove the bearing gland, water ring rubber, pump shaft and bearings. 5. Remove the shaft sealing body and sealing part, remove the static ring of the mechanical seal, and remove the filler cap by removing the packing seal. 6. Unscrew the drain plug on the suspension body, put a net of oil, remove the motor. 7. Loosen the connection bolts between pump body and bearing body, and separate the impeller, shaft sealing body and bearing body from the pump body. Second, the pump maintenance and repair 1. Check the pump and pipe joints with loose phenomenon. Turn the pump by hand to see if the pump is flexible. 2. Pump in the first month of work, after 100 hours to replace the oil, after each 500 hours, oil change time. 3. If you find abnormal sound pump should stop immediately check the reasons. 4. To stop using the pump, first close the gate valve, pressure gauge, and then stop the motor. 5. Regularly adjust the packing gland to ensure normal drip leakage in the packing chamber (it is advisable to leak into a drop). 6. Close the outlet valve and outlet pressure gauges and import vacuum gauge. 7. Jog the motor to see if the motor is turning correctly. 8. When the pump is used in the winter season, after stopping the pump, unscrew the drain plug of the lower part of the pump to release the medium. Prevent cracking. 9. Long-term deactivation of the pump, the pump should be all open, dry the water, the rotating parts and joints coated with grease installed, properly preserved. 10. Start the motor, when the pump is running normally, open the outlet pressure gauge and import vacuum pump, as it shows the appropriate pressure, and gradually open the gate valve, while checking the motor load conditions. 11. Try to control the flow and lift of the pump within the range indicated on the plate to ensure that the pump operates at the highest efficiency point for maximum energy savings. 12. Add bearing lubricating oil to the bearing body, observe the oil level should be at the centerline of the oil, lubricating oil should be replaced or replenished promptly. 13. Unscrew the water diversion plug of the pump body, pour water (or slurry). 14. Pump in operation, the bearing temperature can not exceed the ambient temperature 35C, the maximum temperature shall not exceed 80C. 15. Regular inspection of the sleeve wear, wear larger should be promptly replaced. Further Reading: pump valve pipe fittings Exhibition Water Expo Xiamen exhibition of marine equipment Internet + Forum Yiwu Fair 2016 exhibition mold top ten brands of the Internet information industry (Xiamen) Technology Co., Ltd. Author: Asian pumps Network Editor: Yao Xiaoxia (QQ / WeChat:) http://beng.liuti.cn/ (Service Hotline:)
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