(1) Do not spray fog and drip. One of the common causes is the plugging of the strainer inside the casing, and the second is the plugging of the inclined hole in the spray head. (2) Water and gas are sprayed simultaneously at the time of spraying. The common reason is that the infusion tube in the barrel is welded off, or the infusion tube is corroded by the liquid medicine. (3) The spray mist is scattered and does not have a conical shape. The common cause is that the nozzle hole is not in the right shape or blocked by dirt. (4) The air cylinder does not feed air. One common reason is that the cups shrink and harden, and the wear breaks down; the second is that the screw at the bottom of the cup falls off and the cup is taken off. (5) Gas cylinder cap or water cap leak. The common cause is loose seals. (6) Stopper rod and gland cover run out of water. One common cause is the desoldering of the cylinder wall and the bottom of the pump. The second is that the steel ball in the valve housing is stuck with the dirt and cannot be in close contact with the valve body. (7) Switch leakage. The common cause is damage to the switch or aging of the asbestos rope under the switch cap.
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