First, the direct drive pump and the motor is, you should pay attention to the coaxial output shaft and motor; pump installation accuracy or not on the smooth operation of the pump and have a greater impact on the service life, it must be carefully installed And correction.
Second, the pump coupling must be tight with a spiral, and locking nut, beware of nut loose, or easily lead to impeller movement, resulting in mechanical failure.
Third, in order to pump the body to maintain a certain amount of storage solution, in order to achieve better self-priming capacity and prevent mechanical seal dry friction, the pump must be imported higher than the shaft centerline.
Fourth, the suction pipe installation should pay attention to:
(1): Installation height of inlet should not exceed 3.5m. When conditions permit, the installation height of inlet should be as low as possible to the most artificial storage level in the tank, and try to shorten the length of suction pipe. , This will help shorten the self-absorption time, improve self-absorption function.
(2): valves, flanges, etc. in the suction line should be strictly prevented from leaking or leaking liquid, that is, the suction line is not allowed to leak.
(3): The solid body and other sundries should be prevented from being inhaled in the pump body. Therefore, a filter should be installed on the suction pipe. The effective flow area of ​​the filter should be 2-3 times the suction pipe cross-section, the filter should be checked regularly.
(4): suction pipe and discharge pipe should have their own support, the pump itself is not allowed to withstand the load pipe.
Fifth, when the pump is installed, the electrostatic grounding resistance of the pump and the pipeline should meet the requirements.
Sixth, the installation should be strictly checked pump shell and pipeline electrostatic grounding resistance to meet its requirements.
Seven, correction of pump coupling and motor coupling installation of the gap and coaxiality, its different axis tolerances of 0.1 mm. Pump shaft and electric shaft height difference in the foot pad copper or metal skin adjustment.
Eight, the actual operation of the unit 3-4 hours later, for the final inspection, if no adverse phenomena, then that the installation has been properly carried out in the test run should check the bearing temperature, bearing body temperature should not exceed 70 ℃.
Nine, the pump bearing body cooling unit with a cooling water connector for the hole with Φ12 hose or plastic pipe, the thread size M12 × 1.25.
X. If the pump is equipped with a check valve on the outlet pipe, the pump can not discharge the gas smoothly during the self-priming process. The exhaust pipe and valve should be connected to the outlet of the pump.
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