Fluorine Plastic Centrifugal Pump Model IHF (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

Introduction

Table 3: (n=2900 r/min) Short Support Structure

 

Table 2 (n=1450 r/min) – See page 3 for the continued.

IHFD Centrifugal Pump – Short Support Structure                                                             Flange Dimension (Table 4) 

(See Table 3 for the dimensions)

Table 3

Table 4

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 inlet / outlet size.

2)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.

3)Ensure that the mounting height of the pump conforms to the NPSH. The pipe loss and medium temperature shall be also considered. To avoid NPSH within 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)

4)Minimize the use of bent pipe and use the shortest pipe.

5)Do not use the protruded pipe or inverted U-pipe. The inlet pipe shall be connected upward per 1/100 gradient.

6)If the pump inlet diameter differs from outer diameter, please use eccentric reducing pipe and make the upper part level. If connected in reverse, it is possible that the gas inside the pipe cannot be discharged.

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 and 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) Pump inlet diameter＜150mm: Lubricate the bearing with grease. The bearing box shall be never added with oil additionally.

Pump inlet diameter≥150mm: Lubricate the bearing with oil. The bearing box shall be added with oil additionally.

Notes: Oil-lubricated bearing box is used for the centrifugal pump IHF100-65-250 and IHF125-100-200 (250). Therefore, the bearing box shall be 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) Pump inlet diameter＜150mm

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

(2) Remove the protective housing. Loosen the bolts fixing the support to body and the bolts fixing the suspension support. Then, remove the impeller, pump cover, support, bearing box and mechanical seal from the body as a whole.

(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.

(5) To replace the pump body, it is needed to remove the bolts fixing the inlet and outlet pipe, and the anchor bolts fixing the pump body.

(6) To replace the impeller, it is needed to remove the round nut on the tail.

2) Pump inlet diameter≥150mm:

(1) Same as 1 -2 above.

(2) Loosen the nuts on the impeller. Remove the lock nuts on the impeller. Separate the impeller from the axle, and separate the pump cover from the axle.

(3) Directly take off the bushing in which the dynamic ring of mechanical seal is installed. If it is hard to remove due to rusting, you may use the round nut on the axle to remove the bushing by rotating.

(4) Loosen the bolts fixing the gland of mechanical seal. Remove the static ring of mechanical seal. Loosen the two screws fixing the dynamic ring of mechanical. Remove the dynamic ring from the bushing.

(5) To replace the pump body, it is needed to remove the bolts fixing the inlet and outlet pipe, and the anchor bolts fixing the pump body.

3) IHFD Centrifugal Pump: Short support structure

(1) Close the inlet and outlet valve. Loosen the anchor bolts fixing the motor and the bolts fixing the pump body and support. Separate the motor and impeller components from the pump body.

(2) Remove the wind shield on the back side of the motor. Loosen the lock bolts on the tail of motor. Use copper rod to knock the nut and tension bolts to separate the tail of impeller from the bushing on motor shaft. The impeller, pump cover, mechanical seal and support are severally separated.

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

(4) To replace the pump body, it is needed to remove the bolts fixing the inlet and outlet pipe, and the anchor bolts fixing the pump body.

 

5.Service Commitment

1) Long-term supply is ensures 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. Two may 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 make repair.
Pump head is low	1. There is air in the medium transported. 2. Impeller is damaged. 3. The rotating speed is low. 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 electric circuit. 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. 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.
There is abnormal noise  in the pump and  the pump has vibration	1. The pump axle is no 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 axle. 2. Select proper pump. 3. Remount the tension bolt. 4. Clean or replace the bearing and pump shaft.

 

 

We also supply:

CQB Series Fluorine Plastic Alloy Magnetic Pump                                               FSB (D) Series Fluorine Plastic Alloy Centrifugal Pump

IMD Series Fluorine Plastic Alloy Magnetic Pump                                                FYH Series Fluorine Plastic Alloy Submerged Pump

ZMD Series Self-suction Magnetic Pump                                                             MFY-I Series Wear and Corrosion Resistant Pump

UHB-ZK Series Mortar Pump                                                                               GF Series Fluorine Interlined Pipe Pump

FZB Series Fluorine Plastic Alloy Self-suction Pump                                           Different fluorine interlined valves, sight glass, pipes and fittings