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Ligao Pump Co., Ltd.
Sales：Chen
Tel： 0769-82308823
Fax： 0769-82307056
e-mail： www.palexpump.com
Add：Guo Road, No. 122 Great Bridge Lek Village, Changping Town, Dongguan City, Guangdong Province
Details submersible pump longevity
Many submersible pump protection now available relevant, submersible pump leakage protection, overheating protection submersible pump. Its conservation project covers a submersible pump oil chamber leakage protection, motor leakage protection, boxes flooding protection, insulation resistance protection, winding thermal protection, bearing overheating protection. However, in order to extend the service life of submersible pumps, to avoid accidents we use them also need to pay attention to the following seven details.
1. Make sure the correct direction of rotation of the motor
Should find out the direction of rotation of the motor, there are many types of submersible water pumps positive Jieke when forward and reverse, but reversed the small amount of water current, which reversed a long time will damage the motor windings.
2, prohibit abnormal power supply voltage
Since the low-voltage power lines long, the end of the low-voltage lines are common. When the phase voltage drops below 198 volts, the line voltage is below 342 volts, submersible pump motor speed fall, when less than the rated speed of 70%, start centrifugal switch will be closed, resulting in a long time to start winding is energized to generate heat and even burn winding and capacitors. In contrast, the voltage is too high causing the motor to overheat and burn out the windings. Therefore, submersible pumps in operation, the operator must always observe the power supply voltage falls below 10% of rated voltage, higher than the rated voltage of more than 10%, should be the motor stops running, determine the cause and troubleshooting.
3, cable installation and insulation resistance Submersible Pump
When installing submersible pumps, cables to overhead power line is not too long. Do not force the cable into the water or proposed submersible pump when the power cord to avoid breakage. Do not sink into the mud when the submersible pump, otherwise it will lead to bad motor heat and burn out the motor windings. When installed, the motor insulation resistance of not less than 0.5 megohms.
4, leakage protection installation
Leakage protection, also known as a life-saving device, its role from "life" on these three words can be understood. Because submersible pump underwater, likely resulting in leakage power loss even result in electrical shock. If you have leakage protection, as long as the submersible pump leakage exceeds leakage protection device operating current value (usually no more than 30 mA), leakage protection will cut off the power supply of submersible pumps, to ensure safety, while avoiding leakage, waste of energy.
5, to avoid frequent switching
Do not frequently switch submersible pump, which is because it will produce reflux pump stopped, if immediate boot, will start the motor load, resulting in starting current is too large to burn winding. Due to start-up current is large, frequent start submersible pumps will burn out the motor windings.
6, not to let the long-term work overload Submersible Pump
In order to avoid long-term work overload submersible pump, do not pump water sediment large and always observe whether the current value specified on the nameplate, if found that the current is too large, you should stop to check. In addition, dewatering pump running time should not be too long, so the motor overheating and burning.
7, pay attention to routine maintenance
Usually to regularly check the motor, if found cracks under cover, rubber seal ring damage or failure, etc., should be replaced or repaired to avoid water infiltration submersible pump.
Submersible pump protection application and focused on some daily protection to better extend the service life of submersible pumps.
