Attention shall be paid to:
1. Preparation before use:
① When V-belt transmission is used, the main shaft of the power machine and the water pump must be parallel, and the pulley must be aligned, with the center distance not less than 2 times the sum of the diameters of the two pulleys. When the water pump is connected to the power machine, a common chassis shall be provided. A claw type elastic coupling can be used. Attention shall be paid to the concentricity of the main shaft of the power machine and the water pump shaft.
② The installation height of the water pump (based on the water surface of the suction pool) shall be 1 m to 2 m lower than the allowable suction vacuum height. The soil at the operation location shall be solid to prevent collapse or sinking into the ground.
③ Pay special attention to prevent air leakage when installing the water inlet pipeline. The filter screen shall be completely submerged in the water with a depth of about 0.3m, and shall be kept at a certain distance from the bottom and wall of the pool to prevent the intake of sediment and other impurities and air.
④ When laying the water outlet pipe, the hose shall avoid friction with stones, bark and other objects, avoid wheel rolling and pedestrian trampling, and shall not contact with the running machine. The hose should be rolled into a disc and moved without touching the ground. Hard pipes shall be disassembled into single sections for handling, and multiple sections shall not be moved together to prevent abrasion and damage to pipes and joints. The pipes shall be protected from exposure to the sun and rain to prevent deformation or aging of plastic pipes.
⑤ The spray frame shall be supported on the ground, and the joint end face of the spray frame shall be placed as horizontal as possible, and then the spray frame shall be fixed. Install the nozzle on the spray frame, check whether the nozzle rotates flexibly, pull out the rocker arm to see whether its tightness is appropriate, and add an appropriate amount of oil to the rotating part. Then wipe the quick connector clean and connect it. ⑥ Before starting, check whether the rotation direction of the pump shaft is correct, whether the rotation speed is uniform, and whether there is any abnormal phenomenon such as jamming or abnormal sound.
⑦ Before starting the centrifugal pump, the pump shall be filled with water, and can be started only after the water inlet pipe and pump body are filled.
2. Precautions during use:
① After the water pump is started, no water is discharged within 3 minutes, so it shall be shut down for inspection.
② In case of any abnormal phenomenon (noise, vibration, water volume drop, etc.) during the operation of the water pump, the pump shall be shut down immediately. Attention shall be paid to the temperature rise of the bearing, which shall not exceed 75 ℃.
③ Observe whether the nozzle works normally, and whether it rotates unevenly, too fast or too slow, or even does not rotate. Observe whether the steering is flexible and abnormal.
④ The water source with high sediment content shall be avoided as far as possible, otherwise the pump impeller and nozzle of the sprinkler head will be easily worn. The rotation speed of the nozzle can be adjusted by tightening or loosening the rocker spring. The rocker arm is suspended on the rocker arm shaft, and the rotation speed of the handle control head can be adjusted by turning the adjusting screw to adjust the water inlet depth of the rocker arm head. The speed can be changed by adjusting the position of the reverse rotation.
⑤ The sign of good adjustment of sprinkler speed is that, on the premise of no surface runoff, slow rotation speed shall be adopted as far as possible. Generally, small sprinkler shall rotate 1 turn in 1 minute to 2 minutes, middle sprinkler shall rotate 1 turn in 3 minutes to 4 minutes, and large sprinkler shall rotate 1 turn in 5 minutes to 7 minutes.
3. Unit maintenance.
① The loose parts of the unit shall be fastened in time.
② All lubricating parts shall be lubricated on time to ensure good lubrication and normal operation.
③ The maintenance of the power machine and water pump of the unit shall be carried out according to the relevant instructions.
④ When the machine is out of service for a long time, the water stored in the pump body must be drained, the water pump and nozzle must be disassembled and inspected, the water stains shall be wiped, the oil shall be applied for assembly, the import and export parts shall be wrapped, and the machine shall be stored in a dry place. The pipe shall be cleaned and dried (the hose shall be coiled into a disc) and placed in a cool and dry place. Do not store the above parts in places with acid, alkali and high temperature.