(1) The magnetic pump shaft breaks. The material used for the pump shaft of the CQB type magnetic pump is 99% alumina ceramic. The main reason for the breakage of the pump shaft is that the shaft is broken due to the dry running of the pump due to the dry running of the pump. When the pump is disassembled, it can be seen that the bearing has worn out. The main way to prevent the pump from breaking off is to avoid empty operation of the pump.
(2) The magnetic pump does not produce liquid. The magnetic pump can't get out of the liquid is the pump's most prone to failure, and there are many reasons. First, check the suction pipe of the pump for leaks, check whether the air in the suction pipe is discharged, whether the amount of liquid poured in the magnetic pump is enough, whether the suction pipe is clogged with debris, and whether the pump should be reversed. (Especially after replacing the motor or after the power line has been repaired), it should also be noted whether the suction height of the pump is too high. If the above checks still cannot be resolved, the pump can be disassembled and inspected to see if the pump shaft is broken. Also, check whether the pump ring and static ring are intact and whether the whole rotor can move in a small amount. If the axial movement is difficult, it can be checked whether the carbon bearing is too tightly coupled with the pump shaft.
It is worth noting that the magnetic pump can not find any problems after several times of repairs. It should be noted whether the magnetic coupling is working properly. Bearings, inner magnet rotors and spacers all generate heat during operation, which will increase the operating temperature. On the one hand, the transmitted power will be reduced. On the other hand, the magnetic pump that transports the easily vaporized liquid will cause great trouble. The power transmitted by magnet steel with temperature is a continuously decreasing curve. Generally, below the working temperature limit of magnetic steel, the decline of its transmission capacity is reversible, and above the limit temperature, it is irreversible, namely, the cooling of magnetic steel. After that, the lost transmission ability can no longer be restored. Under special circumstances, when the magnetic coupling is slipped (out of step), the eddy heat in the spacer will increase sharply and the temperature will rise sharply. If it is not processed in time, it will cause demagnetization of the magnet and cause the magnetic coupling to fail. Therefore, the magnetic pump should be designed with a reliable cooling system. For the medium that is not easily vaporized, the cooling circulation system generally draws the flow from the impeller outlet or the pump outlet and returns to the population through the bearing and the magnetic transmission part. For the easily vaporized medium, the heat exchanger should be added or the liquid flow should be led outside the pump. The storage tank, to avoid the heat back to the suction population, should be considered for the medium with solid impurities or ferromagnetic impurities, and for high temperature medium, cooling should be considered to ensure that the magnetic coupling does not exceed the working temperature limit.
When considering whether the speed is enough, first check whether the speed of the motor itself is normal or not, and use a tachometer to measure. If the speed of the motor is normal, consider whether the slippage of the magnetic coupling may occur.
(3) Insufficient head. Caused by this failure are: there is air in the conveying medium, the impeller is damaged, the rotation speed is not enough, the proportion of the transported liquid is too large, and the flow rate is too large.
(4) The magnetic pump bearing is damaged. The material used for CQB magnetic pump bearings is high-density carbon, which can cause bearing damage if the pump breaks water or contains impurities in the pump. If the coaxiality between the inner and outer magnetic rotors of the cylindrical coupling is not guaranteed, it will directly affect the bearing life.
(5) Insufficient flow. The main reasons for the lack of flow include: impaired impeller, insufficient rotational speed, excessive head lift, and blockage of debris in the pipe.
Cooling capacity: 14kW-100kW
1. Self-contained packaged design: Easy installation with just connectiong condensate drainage and electrical power supply, equipped with connecting plug.
2. Plenumb chamber: 3 meter height wwith better air circulation and strong air flow.
3. Long distane air supply: High external static pressure (max350Pa) with 30 meter air throws.
4. Special unit structure design: The wall can be installed in between of evaporator and condenser with the gap of 100-150mm.
5. Digital controller: LED display, timer display, fan speed display, temperature display, error code display, mode display.
6. Easy maintenance: Air filter is easily dismantled and cleaned.
The Tent packaged Air Conditioner mainly used for wedding ceremonies, birthday parties, beer festivals and sporting events etc.
