Daily question 20181231

1. The pump must operate at 0.7~1.25 times the rated flow rate； 2. The operating current does not exceed the rated current ； 3. Never allow the discharge valve of the pump to be closed for a long time to prevent damage to the pump caused by overheating. 4. Overload must be avoided because overload may cause serious mechanical damage and damage to parts. 5. Pay attention to the noise during normal operation. If there is vibration, abnormal sound or other fault phenomena, stop the machine immediately, find out the cause and eliminate the fault. 6. Check the alignment of the coupling (at least once a year) during the shutdown period (according to operation needs), and realign it if necessary. 7. Routine maintenance should first pay attention to whether the performance of the equipment is abnormal, that is, whether the flow rate and head are abnormal. If the requirements are obviously not met, the machine should be shut down immediately to analyze the fault and even be dismantled and inspected to avoid damaging the equipment.

(1) The dimensional and geometric tolerances of each part should be reduced as much as possible. (2) The bearing clearance is properly controlled. (3) The compression amount of the mechanical seal should not be too large. (4) The alignment accuracy should be improved. (5) The backup pump should be cranked regularly.

(1) The size and geometric tolerances of each part should be reduced as much as possible. (2) The bearing clearance is properly controlled. (3) The compression amount of the mechanical seal should not be too large. (4) The alignment accuracy should be improved. (5) The backup pump should be cranked regularly.

1. When installing the equipment, strictly follow the instructions and relevant specifications. 2. Strictly follow the operating procedures during operation. 3. Perform daily maintenance of the pump and implement a good lubrication system.

1) The dimensional and geometric tolerances of each part should be reduced as much as possible. (2) The bearing clearance is properly controlled. (3) The compression amount of the mechanical seal should not be too large. (4) The alignment accuracy should be improved. (5) The backup pump should be cranked regularly.

(1) The size and geometric tolerances of each part should be reduced as much as possible. (2) The bearing clearance is properly controlled. (3) The compression amount of the mechanical seal should not be too large. (4) The alignment accuracy should be improved. (5) The backup pump should be cranked regularly.

(1) The size and geometric tolerances of each part should be reduced as much as possible. (2) The bearing clearance is properly controlled. (3) The compression amount of the mechanical seal should not be too large. (4) The alignment accuracy should be improved. (5) The backup pump should be cranked regularly.

(1) The size and geometric tolerances of each part should be reduced as much as possible. (2) The bearing clearance is properly controlled. (3) The compression amount of the mechanical seal should not be too large. (4) The alignment accuracy should be improved. (5) The backup pump should be cranked regularly.

(1) The size and geometric tolerances of each part should be reduced as much as possible. (2) The bearing clearance is properly controlled. (3) The compression amount of the mechanical seal should not be too large. (4) The alignment accuracy should be improved. (5) The backup pump should be cranked regularly.

(1) The dimensional and geometric tolerances of each part should be reduced as much as possible. (2) The bearing clearance is properly controlled. (3) The compression amount of the mechanical seal should not be too large. (4) The alignment accuracy should be improved. (5) The backup pump should be cranked regularly.