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2017 Do you know how to maintain a music fountain well?
Time:2017-8-28 11:04:48  From:本站原创  Clicks:1764

As a landmark of waterscape which attracts people around to see its beauty, fountain is a landscape, and also an art. But to let the charm of the fountain forever bloom, it has to do the routine maintenance of the fountain. In recent years, electric shock casualty accidents caused by the leakage problem becomes more and more, therefore, it is particularly important to strengthen the maintenance of a fountain. Making maintenance work well can not only maintain the normal operation of the fountain, prolong the service life of the fountain, and it can also avoid the accident.

For fountain maintenance, the most important is the maintenance for fountain pump. Since the fountain works for long time, it will cause certain consumption for the fountain pump, and its lubricating function will be weakened. So it’s necessary to make lubrication maintenance regularly for the pump body, in order to avoid the fountain pump overload operation, and affect the service life of the fountain.Besides, it’s necessary to make for regular inspection and maintenance for the fountain cables , in order to prevent the occurrence of leakage problems of wire breakage and aging to avoid electric shock accidents.

Below are some specific information about how to make a good daily maintenance of fountain pumps:
(1) check and handle those bolt or nut easy to loose, such as door, bolt, shaft pin, pin, etc., double suction centrifugal pump shaft seal packing tightness, air compressor valve plates, etc.
(2) Oil, water, tracheal joints and valves leakage problem treatment.
(3) Checking and handle the carbon brush, slip ring and insulation of the motor.
(4)Check if there are sundries in front of trash rack.
(5) Keep dry motor, and check the motor insulation.
(6) Checking if the gate hanging point is firm, and if there are resistance, corrosion and wear for the side door.
(7) Maintain the on and off equipment for the gate..
(8) Clean the equipment.

It should conduct a comprehensive maintenance for the submersible pumps and its control system on a regular basis, at least to do a comprehensive preventive maintenance once a year, the maintenance work includes: check if it normal for the vibration noise and voltage current when the pump is switched on,and the initiating device work normal or not, whether alarm or not when it’s overtemperature and leakage, if the main cables and control cables have aging crack, main contactor with or without glue death oxidation or burr, thermal relay Settings are correc or not, whether it presents of the signs of ageing for winding insulation, if the resistance to ground insulation is too low, if the three-phase winding resistance is balanced, whether there is a sweeping bore scratch for the statorand rotor , if liquid level for control system is accurate, if it reliable and normal for the upper and lower output, whether floating ball movement is reliable, if it aging for the temperature detection component , if it presence of oil emulsification, if mechanical seal are in good condition, if bearing wear or not, if impeller wear or cavitation, whether the axial deformation of rust or wear, if the screw both inside and outside motor loose or not, if there are clutter in the cooling and circulating water pipes, etc. In the process of preventive maintenance and submersible electric pump operation, it should distinguish between overtemperature alarm, if it is real overtemperature alarm or it’s because of components ageing.

 

If components ageing, it only needs to connect the signal to the alarm signal, and don't let it directly involved in the control, in order to reduce the frequent start of submersible pumps.
In the fountain maintenance, the common problems are : when submersible pumps submersed in water for a long time and cause the main cover of cable age and cracks, and then water will go inside the submersible pump along the cable, so it should check the cable regularly. For smaller crack on the cable surface, after descaling cleaning, it can use waterproof tape winding the crack cable areas, but be careful to let it soak for a few hours later and then check insulation with a megger,when meeting the requirements and then put into operation. Replace the main cable if it not meeting the requirements.

In daily inspection, besides fully operational control, test instrument, it should learn to observe and check the abnormal phenomena of the pump. To check if each instrument pressure, flow, temperature, current, voltage is normal, if the pump parts have any deformation, color change, change, and leaks, presence of jam, etc.;"Smell" is to use the sense of smell to check if there is abnormal flavor, liquid hydrocarbon, such as gasoline, benzene spill the smelling, paint, rubber and other insulation the paste of scorched flavor, etc.; Listen if there are abnormal sound for the voice rolling unit or not, like a blow, friction, whomp sound, eddy current, broken sound, etc.;And also touch if there are overheating, vibration, etc. Only in this way to display the role of operator, under the help of a variety of test instrument, instrument, can we make a perfect daily inspection, early detection of abnormal phenomenon.

 

At the same time, when the pump is in operation, even if for those pump with high automation degree and without monitor, it should do check at least once or twice per shift, as mentioned earlier, this is one of the important work of the early detection of abnormal phenomenon. The pump running environment has improved in recent years, but there are still many pumps are under the condition of the poor environment. Whether it's running environment is good or bad, it should improve the environment and maintain the cleanness of pump and its accessories, especially for the pumps working under the pool environment of operation. Flush some abnormal phenomena during pump operation, it looks as if it is still in the running equipment. But for the most part, it shows the signal of the accident, to the early detection of abnormal precursor is one of the important factors to prevent the accident.To detect abnormal matters earlier, we need to grasp the working situation at ordinary times, and make specific records for daily operation inspection. Except indispensable for trouble-shooting , the basic data can also help daily maintenance and early detect of abnormal phenomenon.

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