1. Check whether the water pump outlet and outlet switch of the sprinkler pump is turned on. In general , the water pump of a sprinkler is a self-priming pump. When the water is used for the first time, the water should be poured.
2. Check if the filter on the front section of the suction pipe is clogged with water.
3. Check whether the inlet pipe is sealed step by step, and eliminate the failure of the leak.
　　
4. The water diversion height of the water pump used by common sprinklers should be less than 5 meters.
　　
5. Check if the water pump oil seal of the sprinkler is damaged, and the leakage of the pump shaft affects its vacuum. Replace the seal.
　　
6, the sprinkler engine speed is too low, can not reach the required vacuum, adjust the throttle to make the speed at about 1700 rev / min, the gearbox may require different engine speed.
　　
7. Check whether the power take-off device of the sprinkler is working or not. The power take-off and the drive shaft can cause the water pump to fail to work.
　　
8, check the sprinkler pump speed is normal, there is no abnormal noise. If you can't move it, there is a lot of debris around the blade.
　　
9, in addition to the detection process to avoid long-term idling of the pump, causing the pump temperature is too high affect its life.
　　
When the sprinkler fails to pump water, it may be due to the following reasons.
　　
1. Sprinkler tank Because of the long-term use of uncleaned dirt inside the tank, or the source of water used is too dirty, the outlet strainer or pump body is blocked.
　　
2. If there is a failure of water in the sprinkler during the winter season , it may be considered that the inside of the tank and the water pump of the sprinkler are frozen and cracked to cause the above failure.
   For more information on sprinkler, sprinkler price, welcome to inquire!
Lifting Hopper Concrete Drum Mixer
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There are two steel bearing protection circles between the mixing arm and shaft.to prevent coarse sand.In the steel circles there is a airway. When certain pressure of air goes though it,a pressure protection mat will be formed between the interface of the mixing arm and shaft to prevent water and mud from close to shaft head and prolong the service life of the mixer.
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