Deep Well Pump 4SG(m) 4"

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Q:2 inches of water pump is generally equipped with high-power motors
Clean water pump 5.5 kw
Q:How many kinds of pumps are there? What are the advantages of soft start?
Start the pump direct start, soft start and step-down start, starting four, direct start motor is generally suitable for small power, we usually use, at 15kw below the pump price; Step-down start is the star delta conversion is started, start is two times speed to reach the rated speed of the general. Using the above 18.5kw, the pump price moderate; soft start is gradually increased to the rated speed of the pump, the impact is very small, the price is relatively high, generally 3 times the step-down start; is the most advanced frequency conversion start, not only have advantages of soft start, also can be set to work at any speed, there are significant effect on energy saving.
Q:Water pump "rated lift: 6m" what do you mean?
Popularly speaking, "lift head" is the ability of water pump to lift water. 6m means that the pump can pump water to the height of 6m.
Q:Why can't sprinkler system and hydrant system share water pump in fire fighting system?
The design code of sprinkler system GB 50084 - 2001 (2005 Edition) stipulates that the sprinkler system shall be provided with an independent water supply pump, that is, the water pump shall not be shared with the hydrant system. The aim is to ensure the reliability of the water supply and prevent interference.See the code for design of automatic sprinkler system, GB 50084 - 2001 (2005 Edition), 10.2.1 and the corresponding provisions of the following interpretation.
Q:4--6 inch deep well pump head? How much per hour out of water?.
Deep well pump head is based on how much the impeller, impeller 200QJ section is 11 meters lift, 250QJ is about 17 meters, 300 meters high lift, 4 inch flow in 80 to 100 tons per hour, 6 inch flow in 150 to 200 tons per hour
Q:What does the temperature range of the pump mean?
The range of temperature is less than 135 degrees Celsius, which means that the range of use shall not exceed 135 degrees celsius. Refers to the temperature of hot water, high pressure steam boiler inside the water temperature is more than 100 degrees Celsius, your pump is a high-pressure high temperature water pump, generally used for steam boiler or high temperature waterway system. For reference only.
Q:Domestic pump automatic shut off the water, but also turn around, stop what happened?
Absolutely at the pressure switch, just under pressure. The shell open pressure switch, will see there is a spring, the screw is to adjust the pressure of the ~ ~ ~ try, and I've done a lot.
Q:Safety head of water pump?
Pump selection should pay attention to the following points: (1) to meet the maximum load conditions, should try to reduce the waste of energy; (2) rational use of high efficiency section of the pump; (3) using the same type pump as much as possible, the type of neat, standby each other; (4) to the selection of large pump according to the actual situation, but also should consider taking into account the size, flexible deployment; (5) lack of H value changes, different types of collocation is optional pump operation. (6) to ensure the water conditions, take care of basic level, reduce the pumping depth; (7) consider the standby unit necessary; (8) check the fire with water; (9) considering the development, implementation of the combination of short and long term; (10) to the selection of water pump type local mass production.
Q:Why is water pumping cool water is normal, but when pumping hot water pressure and flow are very small?
There may be: first, the water temperature is too high, the impeller damage! But this may not be very likely! Second, but also the water temperature is too high, but may be too high water temperature will be hot water pipe deflated, resulting in no water. Third, it is possible to buy fake and shoddy products!!! Another important problem is that you didn't tell me what kind of pump it was! What forms of work do you have?
Q:Pump impeller diameter plus assembly what changes? What's the effect on the motor?
Two 1.5 kW desktop self-priming pump impeller 14.7cm primary current 15.5cm problems may occur.After the impeller increases, the flow, head, shaft power will increase (increase in volume see the following formula), the original 1.5KW motor may overload operation.

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