Maintenance Of Pumps In Closed Cooling Towers

Closed cooling tower spray pump, circulating water pump: When checking the water pump, be sure to cut off the power supply of the water pump. Sometimes due to reasons such as automatic operation, the sudden start of the pump is very dangerous.
⑴. When the pressure, flow rate, current, vibration, noise, etc. are very different from the usual ones, it is the precursor of the fault, and it is very important to deal with it. So please keep a running diary.

(2) When the vibration is large, please check the installation of the piping or whether the foundation bolts are loose. Sometimes it is caused by the vibration of circulating water. When piping, it should be considered to install flexible joints, pressure vibration or absorbing devices.

⑶. If the outlet valve of the water pump is closed and operated for a long time, it will burn out the inside, so full attention should be paid.
⑷、Frequent start and stop will quickly burn the motor. Please use the following criteria to control the number of startups. Motor power Starting times Below 7.5kw Below 6 times/hour Below 11kw Below 4 times/hour.
⑸, long-term stop operation or maintenance, if the internal water freezes when the water pump stops in winter, the water pump will be damaged by freezing. The pump must be insulated or the water inside must be drained.

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