I. Installation of SG series pipeline pump SG series pipeline pump Assembly and disassembly 1. Scrub all the parts to be installed.
2. Install the mechanical seal on the motor shaft. Add a small amount of clean turbine oil or No. 20 engine oil to the surface of the mechanical seal and static ring.
3. Install the impeller and tighten it with the impeller nut.
4. Put a “0†ring and bolt the pump body to the motor end cap. Pay attention that the gap between the impeller front cover and the pump body is 20 to 0.5 mm, and the impeller inlet outer ring and the pump body ensure a certain running clearance.
5. The reverse order of disassembly is the opposite.
SG series pipeline pump installation and use 1. Use rubber washers and bolts to connect the flanges of the pump body to the pipe flanges, and then complete the installation. For ease of use and maintenance, a regulating valve should be installed on the inlet and outlet pipes of the pump.
2. Open the inlet regulator valve so that the water enters the pump to keep the seal chamber filled with fluid (otherwise the seal will be damaged) and close the outlet valve.
3. Apply power and jog to determine correct steering.
4. After the steering is determined, start the pump and run it.
5. Adjust the outlet valve opening so that the pump runs near the design point, depending on the pump's rated flow and head proximity. [For this purpose, it is best to place a pressure gauge near the outlet flange). Note: This pump is strictly prohibited from running in water, so as not to damage the seals.
Second, SG series pipeline pump troubleshooting methods:
Causes of Failure 1. The pump does not pump water. The water pump is not filled with water. The direction of rotation is incorrect, and the impeller flow path is blocked. Then pump water into the pump, pass through the impeller flow channel, adjust the direction of rotation.
2. Insufficient pump flow The pump is partially blocked, the number of revolutions is too low, the total head is higher than the pump rating, and the impeller is damaged. Clean the pump and tube, replace the impeller, increase the number of pump shaft revolutions, and adjust the outlet valve.
3. Insufficient outlet pressure There is air in the liquid, the speed is too low, the impeller is damaged, and the opening of the outlet valve is too large. Remove the air in the liquid, increase the pump speed, replace the impeller, and adjust the outlet valve.
4. Pump power consumption is too large (motor heating) Mechanical defects such as the operating clearance is too small, the motor shaft bending, loose bolts, etc., the pump works under too much flow, the pump is working well below the rated head. The mechanical part of the inspection is adjusted in time and the outlet valve is adjusted so that the pump works near the rated flow and head.
5. The vibration system of the water pump vibration system is not well-supported, and the impeller is partially blocked to cause unbalance, resulting in cavitation and air in the liquid. Check the pump support department, tighten the nut, pass the impeller to balance, and eliminate gas.
6. The mechanical seal of the leaking water pump is damaged, the O ring is damaged, and the pump body leaks. Replace the mechanical seal and the 0-ring and weld the leaking part of the pump body.
2. Install the mechanical seal on the motor shaft. Add a small amount of clean turbine oil or No. 20 engine oil to the surface of the mechanical seal and static ring.
3. Install the impeller and tighten it with the impeller nut.
4. Put a “0†ring and bolt the pump body to the motor end cap. Pay attention that the gap between the impeller front cover and the pump body is 20 to 0.5 mm, and the impeller inlet outer ring and the pump body ensure a certain running clearance.
5. The reverse order of disassembly is the opposite.
SG series pipeline pump installation and use 1. Use rubber washers and bolts to connect the flanges of the pump body to the pipe flanges, and then complete the installation. For ease of use and maintenance, a regulating valve should be installed on the inlet and outlet pipes of the pump.
2. Open the inlet regulator valve so that the water enters the pump to keep the seal chamber filled with fluid (otherwise the seal will be damaged) and close the outlet valve.
3. Apply power and jog to determine correct steering.
4. After the steering is determined, start the pump and run it.
5. Adjust the outlet valve opening so that the pump runs near the design point, depending on the pump's rated flow and head proximity. [For this purpose, it is best to place a pressure gauge near the outlet flange). Note: This pump is strictly prohibited from running in water, so as not to damage the seals.
Second, SG series pipeline pump troubleshooting methods:
Causes of Failure 1. The pump does not pump water. The water pump is not filled with water. The direction of rotation is incorrect, and the impeller flow path is blocked. Then pump water into the pump, pass through the impeller flow channel, adjust the direction of rotation.
2. Insufficient pump flow The pump is partially blocked, the number of revolutions is too low, the total head is higher than the pump rating, and the impeller is damaged. Clean the pump and tube, replace the impeller, increase the number of pump shaft revolutions, and adjust the outlet valve.
3. Insufficient outlet pressure There is air in the liquid, the speed is too low, the impeller is damaged, and the opening of the outlet valve is too large. Remove the air in the liquid, increase the pump speed, replace the impeller, and adjust the outlet valve.
4. Pump power consumption is too large (motor heating) Mechanical defects such as the operating clearance is too small, the motor shaft bending, loose bolts, etc., the pump works under too much flow, the pump is working well below the rated head. The mechanical part of the inspection is adjusted in time and the outlet valve is adjusted so that the pump works near the rated flow and head.
5. The vibration system of the water pump vibration system is not well-supported, and the impeller is partially blocked to cause unbalance, resulting in cavitation and air in the liquid. Check the pump support department, tighten the nut, pass the impeller to balance, and eliminate gas.
6. The mechanical seal of the leaking water pump is damaged, the O ring is damaged, and the pump body leaks. Replace the mechanical seal and the 0-ring and weld the leaking part of the pump body.
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