ISG Vertical Pipeline Centrifugal Pump

ISG Series single stage single suction pipeline centrifugal pump is designed on the base of domestic excellent water power model and the performance parameter of IS series centrifugal pump. ISG Series centrifugal pumps are designed such as hot water pump and corrosion resistance pump and oil pump for the different temperatures and liquids. The pump has the good performance of reliable operation and high efficiency and little noise etc.

Characteristics

1. The structure is vertical with the same sizes of inlet and outlet in the same center line. It can be installed in the pipeline like the valve! The pump has the compact structure and good appearance and low construction cost and occupies little place! It can also be used outdoors with protective cover.
2. Impeller is installed in the extended shaft of electric motor and so the axial size is small. The structure of the pump is very compact!The pump is matched reasonably with bearing of electric motor! Radial and axial load are well balanced during the operation So it makes sure that the pump can operate stably with little vibration and noise.
3. Shaft seal adopts mechanical seal or the combination of mechanical seal.The mechanical seal is made from hard alloy material and adopts titanium alloy sealing ring or middling high temperature resistance mechanical seal. So it has the best wearable seal and can prolong the life of mechanical seal.
4. Convenient to install and maintain. Only loose the nut of pump seat to draw out all rotors. It need not disassemble pipeline system.
5. Parallel connection and in series can be chosen for different flow rate and head.
6. It can be installed horizontally and vertically as different pipeline system.

Application

ISG seriesvertical pipeline centrifugal pump is used to transport the water and other liquid similar to the water in physical and chemical characteristic. It is widely used for the drainage in industry and city, booster and water supply for high-building, irrigation in garden, booster in fire fighting, transporting from along distance, water circulation in circulation system etc. Working Temperature<80℃

Working condition

1. Suction Pressure<1.0 MPa,or the Max Waking Pressure<1.6 MPa, Suction Pressure + Height <1.6 MPa, Testing Static Pressure of pump is 2.5 MPa, please give dear indication of system’s working pressure. Please note it if the system’s max working pressure is larger than 1.6 MPa
2. Working Temperature<40℃,relative humidity<95%.
3. The whole solid’s volume of Medium should less than 0.1%of unit volume, granularity <0.2mm.

Note: If the used medium contains small solid, please indicate when ordering, or the suppliers can adopt wearable mechanical seal.

Model Significance

Structure Specification

Installation Method

Notice of Installation

1. Check the fasteners of the system to see ifthey are loose or not and if flow passage of pump boy is blocked by impurity to avoid damage of impeller and pump body during operation before install the pump.
2. The pump should not supportthe weight of pipeline to avoid the distortion of pump in the installation.
3. Make sure to screw the bolt of foot t o avoid vibration in the start of pump when install the pump.
4. Install a adjust valvein every inlet and outlet pipeline and a pressure gauge near to outlet of pump. It can make sure that the pump operates in rated head and flow range safely to prolong the life of
5. Turn the shat of pump and impeller and make sure that they have not attrition and block after the pumpis installed. Otherwise disassemble the pump and find the cause.
6. Two connection ofpumps such as rigid connection and flexible connection

Maintenance

1.Maintenance in operation :

• Inlet and outlet pipeline need be fully filled with liquid, Long operation of pump in cavitations is prohibited.
• Check the current of electric motor regularly to make sure that it does not exceed the rated current!
• Mechanical abrasion such as big noise an d vibration appears after alongoperation of pump. Check the pump and replace the damaged parts and bearing if nee Normally major parts of pump need the maintenance for about one year!

2.Maintenance of mechanical seal

• The mechanical seal should be clean and not without grain after being lubricated.
• Mechanical seal’s working in dry attrition is prohibited
• Turn the pump and motor to avoid the rupture and damage of graphite ring before start the pump
• 3 drops/minute is allowedfor the leakage rate of the seal. Otherwise the mechanical seal should be carefully checked

Start and Shutting down

Start and stop

1. Test the rotary direction of motor is right.The rotary direction of motor is clockwise, viewed from top of motor to pump. Make sure the test time is short to avoid the dry attrition of mechanical seal.
2. Open the air valve tolet the liquid enter into the whole chamber of pump and then close it when the pump is fully filled with liquid
3. Check everyparts and make sure they are normal
4. Turn the pump by hand to let the lubricant enteronto the surface of mechanical seal.
5. High temperature series pump shouldbe warmed up in advance. The improvement rate of temperature should be 50’c /hour to gain the heat for every part eq

Start

1. open entirely inlet valves
2. Close the outlet valves.
3. Start the electric motor and see if the operation of pump is normal.
4. Adjust he opening degree of outlet valve for needed occasion. If the flow meter or pressure gauge is installed near to the outlet adjust the opening degree of outlet valve to let pump operate in rated data of specification. Meanwhile test the current of electric motor to let the motor work in rated current. Otherwise the pump works overloading and the motor is burnt for over current. The opening degree of outlet valve is relative with the conditions of pipeline.
5. Check the leakage of shaft seal. Normally the leakage of mechanical seal should less than 3 drops/minute6. Check the motor and make sure the temperature of motor and bearing should not higher than 70’C

Stop

1. For stop ofthe hightemperature series pump. let the temperature drop below 80℃ and then stop the pump. Rate in dropping of temperature is less than 10℃/minute.
2. Close outlet valve.
3. Stop the electric motor.
4. Close the inlet valve.
5. Exhaust all the liquids in pump for preservation when pumpis notused for a long time.

Malfunction’s Reasons and Ways