Fluorine Plastic Centrifugal Pump Model FSB & FSB (D)

Safety Notice

        To avoid accident or damage, please be sure to read the Safety Notice carefully before use of the pump. Be sure to follow the safety instructions in this section. The Operating Instructions is very important and may prevent the pump operator or other people from injury or mitigate property damage. 

1.Safety Warnings

1)Hazard of magnetic field: The pump driven by magnetic force will generate a very powerful magnetic field that will cause adverse impact to those who wear electronic medical devices (e.g. electronic pacemaker).

2)Be sure to cut off the power supply before repair or other work. When there is someone repairing the pump, take protective measures to prevent other operators from switching on the power supply by mistake. In noisy or dark environment, place a clear sign beside the power switch to warn others. Switching on the power supply by mistake during maintenance may cause severe accident or even human death. Every person shall take special care.

3)Please wear safety goggles, protective gloves, protective clothes and other necessary protective equipment when replacing the pipe system or removing or assembling the pump.

4)When lifting the pump, use chain or belt to pass through the lug or motor to keep the pump and motor on level position. Do not stand beneath the lifted pump.

5)To avoid leakage, be sure to perform routine inspection and maintenance of the pump when it is used for trans porting the following dangerous liquids. In the event of leakage, such dangerous liquids (or volatile gas) will cause human death, explosion or fire.

a)Inflammable or explosive liquids;

b)Corrosive or poisonous liquids;

c)Liquids harmful to human body.

2.Safety Cautions

1)The magnetic pump will generate powerful magnetic field. Take care to prevent the strong magnetic force from causing harm to human body (e.g. squeezing your fingers).

2)Avoid idle run: Idle run may heat impeller axle and destroy the mechanical seal due to dry friction, thus resulting in damage to the pump. It is also deemed idle run if the pump works with the inlet and outlet valve closed.

3)Avoid damage due to static charge: Static charges will be generated if the pump is used for transporting the liquids of low conductivity, e.g. ultra-pure water or fluorine-contained inert fluids. This will cause electric discharge and damage to the pump. Measures shall be taken to prevent the generation of static charges or other measures shall be taken to lead the static charges.

4)The pump maintenance personnel shall have professional knowledge and operating experiences.

5)Magnetic pump made of special materials shall be used for designated working conditions only; otherwise there is no way to ensure the normal performance and service life of the pump, or it may even cause accident.

6)Requirements for site ventilation: If the pump is used for transporting the volatile poisonous gas, safety measures, e.g. ventilation equipment, must be taken to avoid liquid leakage in case of emergency.

7)Avoid liquid leakage: To prevent the liquid from flowing directly into the ground, protective measures shall be taken against the leakage caused by emergency accident or pipe damage.

8)Select the electromagnetic switch according to the motor specification, e.g. rated voltage and rated power.

9)If the pump is installed outdoor, protective measures must be taken for the electric circuits, thus to prevent the water from flowing into the switch.

10)The electromagnetic switch and buttons shall be installed safely and away from the pump.

Introduction

1.Use and Features

6.Structure and Parts Name

 

7.Mounting Size

Installation:

1.Key Points of Installation:

1)The pump shall be installed and fixed on solid foundation free from the impact of mechanical vibrations.

2)The foundation shall weigh three (3) times the equipment weight or higher, and be larger than the seat.

3)For easy repair and maintenance, adequate space shall be left around the pump.

4)Place the pump unit on the foundation. Gaskets shall be paved between the seat and

foundation. 

2.Pipe

1)The pipes into and out of the pump shall be supported. Do not use the pump as the support. The pipe diameter shall be compatible to the pump opening. The pump shall be as close as possible to the water tank.

Ensure that the mounting height of the pump conforms to the NPSH. The pipe loss and medium temperature

2）shall be also considered. To avoid NPSH within the pump body, be sure to follow the formula 

below: 

NPSHa ≥ NPSHr + 0.5, in which:

NPSHa: Effective (equipment) NPSH (m)                             NPSHr: Necessary (pump) NPSH (m) 

Pa: Pressure applied onto the surface of transported medium (MPa)

Pv: Steam pressure of the medium (MPm)

g: Gravitational acceleration (m/s)

ρ: Medium density (kg/m3)

hs: Height of suction (m)

hf: Resistance of suction pipe (m)

3)The pipe bend shall be as smooth as possible. Minimize the bends and avoid bend at the position close to the pump inlet.

4)The liquid drop shall be considered. The suction pipe shall be positioned at an adequate depth. To prevent the foreign particles from entering the pump, filter shall be installed at the inlet. The filtration area shall be 3-4 times larger than the section area of the pipe. The filer shall be cleaned regularly.

5)When the pump is used for upward suction, bottom valve must be installed on the inlet pipe of the pump. When the pump is used for back flow, valve must be installed on the inlet and outlet of the pump. The valve mounted in the outlet pipe may be used for adjusting the flow to ensure that the pump works at the specified flow. This may avoid the pump failure due to motor overload.

6)For easy repair, pipe compensator shall be installed at the inlet and outlet of the pump as it might be.

7)The pipe must be correctly connected. The sealing gasket between the flanges shall be smooth and not be mal-positioned. If there is leakage on the seal, the pump cannot work normally or the pump might be even damaged. 

 

Operation and Maintenance

1.Cautions before Use

1)Always avoid idle run of the centrifugal pump. The minimum flow of the pump during operation shall be 35% of the design value.

2)If cavitations occur when the pump is running, be sure to stop the pump within one (1) minute.

3)The variance of medium temperature shall be controlled within 40℃. If the temperature rise / drop are too high, it might cause damage to the pump components.

4)If there is sudden power failure when the pump is running, be sure to cut off the power supply immediately and close the outlet valve.

5)The pump noise is ≤85dB. If there is vibration or noise, please stop the pump and check it. Do not restart the pump until the trouble is eliminated.

6)Lubricate the bearing with grease. The bearing box shall be never added with oil additionally.

 

2.Start and Operation

1)Start

Calibrate the coupler before starting the pump.

(1)Before calibrating the coupler, control the rotating direction of the motor at the disengagement position according to the arrow on the pump.

(2)The flexible coupler requires careful calibration of its axis. Adjusting gasket may be used for adjustment. Any negligence during calibration may cause damage to the coupler, pump and drive bearing.

(3)To calibrate the coupler, a precision ruler may be placed against the outer edge of the coupler to observe its parallelism to the axis from several points. A feeler gauge may be used on several positions to control the distance between two semi-couplers.

(4)For the pump with oil-lubricated bearing, lubricating oil shall be firstly filled into the bearing box until it reaches the center position of the oil gauge. To keep the oil clean and good lubrication, the oil shall be replaced periodically. Generally, the oil shall be totally replaced every 1500 hours of operation. N46 machinery oil is preferred.

(5)Under back-flow working condition, open the inlet valve to supply the liquid. Under upward-suction working condition, the pump must be filled up with liquid firstly.

2)Operation

(1)Test run the pump for 5 – 10 minutes. If there is no abnormality, put the pump into normal operation.

(2)Regularly check the pump and motor for temperature rise. The temperature rise of bearing shall be not higher than 40℃ and the limit temperature shall not be higher than 90℃. For insulated motor, the maximum temperature rise shall be 90℃ when the ambient temperature is 40℃, and the tolerable limit temperature is 130℃.

(3)If the pump head is lower than the rated head, be sure to close the outlet valve smaller to make the flow reach the rated value. If the outlet valve is fully open, the flow will be higher than the rated value.

(4)If finding abnormal sound or other problems during operation, please stop the pump immediately and check it. Do not restart the pump until the problems have been eliminated.

3)Stop

(1)Firstly close the outlet valve. Then, cut off the power supply of the motor.

(2)Close the inlet valve.

(3)Keep the pump outer surface and environment clean.

(4)After the pump is stopped, if the ambient temperature is lower than the freezing temperature of the liquid, it is

needed to discharge the liquid thoroughly from the pump, thus to avoid freezing.

(5)If the pump is long out of use, the corrosive liquid inside the pump shall be thoroughly discharged. Besides, the pump chamber shall be flushed clean with clear water. Take special care to flush the sealing components and block the pump inlet and outlet properly. Keep the pump in good condition. 

3.Repair and Maintenance

1)Check the pump and motor regularly. Replace the easily-damageable components.

2)If the pump is stopped and placed long out of service, the flow passage inside the pump shall be flushed and the power supply shall be disconnected.

3)Always avoid idle run. If the pump is installed outdoor, rainproof measures shall be taken to prevent the motor from burn due to moisture.

4.Removal and Assembly

1)Model FSB

(1)Close the inlet and outlet valve. Loosen the anchor bolts fixing the motor. Then, separate the motor and pump cover (i.e. motor coupler and pump coupler).

(2)Loosen the bolts fixing the support to body. Remove the pump body from support.

(3)Loosen the fastening bolts on the shaft end. Use copper rod to knock the nuts and tension bolts to separate the tail of impeller from the bushing on pump axle. The impeller, pump cover, mechanical seal, support and bearing box are separated.

(4)Loosen the two screws fixing the dynamic ring of the mechanical seal. Then, pull the dynamic ring from the impeller shaft. Remove the pump cover. Remove the screws fixing the mechanical seal gland on the pump cover. Remove the static ring of the mechanical seal from the pump cover.

2)Model FSB (D)

(1)Close the inlet and outlet valve. Loosen the bolts fixing the support to body. Remove the pump body from support.

(2)Loosen the anchor bolts fixing the motor. Remove the motor housing. Loosen the tension bolts and nuts.

(3)Use copper rod to knock the nuts and tension bolts to separate the tail of impeller from the bushing on pump axle.

(4)Pull off the motor. The impeller, pump cover, mechanical seal and support are separated.

(5)Loosen the two screws fixing the dynamic ring of the mechanical seal. Then, pull the dynamic ring from the impeller shaft. Remove the pump cover. Remove the screws fixing the mechanical seal gland on the pump cover. Remove the static ring of the mechanical seal from the pump cover. The assembly is in reverse to the procedures above.

 

5.Service Commitment

1)Long-term supply is ensured for the easily-damageable parts and other components.

2)New model of corrosion-resistant pump and explosion-proof motor may be designed according to the user requirements.

3)We provide technical supports and life-long services for our products.

4)We provide door-to-door commissioning and repair free of charge (The easily-damageable parts are charged per the ex-works price). 

 

6. Troubleshooting

 

Fault	Cause	Solution
No liquid pumped	1. There is air in the suction pipe or the inlet is blocked. 2. The suction height is too high. 3. The required lift is higher than the pump head. 4. The discharge pipe is too thin and the pipe loss is too high. 5. The pump rotates in wrong direction.	1. Clean the pipeline. 2. Reduce the mounting height of the pump. 3. Replace with the pump that has a higher head. 4. Replace with an output pipe that has the same diameter as the pump diameter. 5. Adjust the rotating direction of the pump.
The flow is low	1. Impeller is damaged. 2. The seal is damaged. 3. The number of rotation is inadequate. 4. The number of rotation is low. 5. Too many elbows on outlet pipe, resulting in that the resistance is too high.	1. Replace the impeller. 2. Replace the seal. 3. Increase the number of rotation. . 4. Reinstall the pipe according to specifications. 5. Rearrange the pipes as optimal.
The power is too high	1. The specific gravity of the medium is too high. 2. Mechanical friction exists.	1. Replace with the motor or pump that has a higher power. 2. Check the position of friction and repair.
Pump head is low	1. There is air in the medium transported. 2. Impeller is damaged. 3. The number of rotation is inadequate. 4. The viscosity of transported medium is too high.	1. Refill liquids or exhaust the air. 2. Replace the impeller. 3. Check the motor and power line. 4. Reduce the viscosity or add the filling pressure.
The seal is in severe leakage	1. The material is improper or there is corrosion. 2. Severe wear on the surface. 3. The static and dynamic ring is not mated. 4. The static ring is broken. 5. The dynamic ring of mechanical seal retreats.	1. Replace with proper dynamic and static ring. 2. Replace the worn parts, adjust the spring pressure and reduce the friction. 3. Adjust the static ring and dynamic ring for proper mating. 4. Replace the static ring. 5. Loosen the screws fixing the dynamic ring, position and lock it again.
There is abnormal noise in the pump and the pump has vibration	1. The pump shaft is not coaxial with motor. 2. The flow exceeds the range. 3. The tension bolt is loose or fallen. 4. The motor shaft is worn and the bearing is damaged.	1. Calibrate the pump axis. 2. Select proper pump. 3. Remount the tension bolt. 4. Clean or replace the bearing and pump shaft.

 

 

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