Multi-stage Deep Well Submersible Pump

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Q:Under what circumstances should we set up fire pool and fire pump room? Is it necessary to have a building?
Public construction property
Q:Why does the water pump leak?
Two reasons.One is that the gap between the bearings becomes larger. Damage the water seal. One is the aging of water seal.
Q:Fire pump control cabinet installation distance, ground height should be how much?
30MC is fine. There are no definite rulesSome drawings of the introduction is explained, because the drainage of the water pump in the case of clogging, may be submerged into the water pump control cabinet, causing some unnecessary trouble
Q:How do I calculate the power of the pump?
Motor Power (kw) =0.163*Q*H*K/60/EOf which: Q is the flow, unit m^3/hH is the lift, unit ME is the efficiency value of the pumpK is the safety factor, generally 1.1.
Q:What is the definition of the pump in the capacity of the pump?
I don't know very well about your work there;General pump is a one, or two with a preparation work; pump and standby pump capacity is big, the maintenance of pumps is provided here, said in the overhaul, overhaul maintenance enabled pump, pump capacity can be greatly reduced, as long as the pump 1/4, thus reducing the volume of the standby pump the.
Q:What will the water pump reversal situation?
Small amount of water, lack of pressure, but not long time running, so that the pump impeller back cap will drop, loose impeller, water pump may damage.
Q:What motor with Grundfos pumps
Is a good question, bigualu regular with the Danish brand and a German brand is willard. The motor hasn't been disassembled yet. You can help me look around.
Q:When using a frequency converter to adjust the pump, what is the relationship between the change of the speed and the efficiency of the pump?
First, the wind pumps such load is usually called square torque load, which is in a certain range of speed and torque is roughly proportional to the square of the speed of N, TL=kn^2, power and speed is proportional to the cube, the energy-saving effect is obvious. Can also be described according to what you pump model, the pump is divided into piston pumps, screw pumps, impeller pumps and centrifugal pumps.Secondly, under the standard condition, the higher the efficiency of the centrifugal pump, the higher the speed determines the size of the centrifugal force, the higher the speed, the greater the centrifugal force, and vice versa. Plunger pump and screw pump is not the same, the speed of speed and efficiency basically no impact. Third, in addition to buying the pump, you can let the manufacturer give you an FM curve, so you can see the frequency of mediation when the water pump efficiency changes
Q:Relationship between pump voltage and lift?
This is the world's Grundfos pump, if the pump itself support work under the 414V if it didn't need to worry about traffic and Yang Cheng, if the pump does not support the long time operation of the pump must lift and flow impact, and the multi-stage pump if it is Gao Yangcheng in the use of low lift it is also easy to burn the motor,
Q:Fully automatic self-priming pump
Yes, add a water level controller.Try electronic water level switch with stable and reliable performance. In Baidu search "electronic water level switch official website", you can find more information, model is BZ201

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