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Self-priming pump common fault
Daily maintenance and maintenance
(1) Maintenance of automobile chassis and supporting pump shall be carried out according to the corresponding instructions for use.
(2) Before use, the vehicle should be worn out according to the requirements of the vehicle's instructions.
(3) When the long-distance transfer is consigned, there should be a fixed anti-skid device around the vehicle, and there should be more than 200mm clearance around the vehicle. If the self-conversion is performed, the front nozzle and rear sprinkler should be removed to prevent loosening.
(4) Check regularly whether there is any clogging in the holes and mouths, and clean up the debris when it is found to be clogged.
(5) After each shift is completed, the oil should be cleaned, the pipelines must be neatly arranged, and the scene should be cleaned up.
(6) If the vehicle is not used for a long time or stored in winter, the remaining water in the tank, the pump and the pipeline shall be drained, and it shall be parked in the carport during storage and wipe clean to avoid exposure to rain and rain.
Water truck troubleshooting Possible failure
Cause Analysis
Exclusion measures
Water doesn't pump up
1, the pipeline seal is not strict
2, water filter into the water too deep
3, pump vacuum is not good
4, lack of water
1, check the pad, adjust the thickness of the gasket, tighten the connector screw.
2, deep water filter
3, according to the pump instructions for troubleshooting
4, add enough water
Insufficient water width
1, the pump speed can not reach the rated value
2, the spray angle is wrong
3, the pipeline has been blocked or leaked
1, add the throttle, increase the engine speed to the pump speed rating.
2, adjust the spray angle.
3, remove the blockage or leakage phenomenon.
Water pump noise or vibration
1, the bearing clearance is too large
2, gear clearance is too large
3, gear box lack of oil
1, with reference to the pump manual exclusion
Ball valve failure
1, cylinder failure
2, valve core damage
1, check the electricity, gas path is loose
2, replace the ball valve
First, the motor part
1. No response after power on. Most of them are caused by short-circuiting of power plugs, power outlets, and motor windings.
2. Difficult to start or unable to start, accompanied by a "squeaky" sound. During inspection and repair, small bamboo strips can be used to rapidly move the blades according to the running direction. If the motor is quickly operated, it indicates that the starting capacitor or starting winding is damaged. Replace the capacitor with the same capacity or repair the starting winding. If the motor is issued, the motor and the pump head are mostly. Mechanical failure, such as bearing damage, stuck impeller and so on.
3. The motor can run, but the speed is slow, and the casing is overheated and burnt. Most of them are caused by the short circuit of the motor windings. The motor should be disassembled and repaired by welding, jumper, isolation, rewinding, etc., depending on the damage.
4. Large noise and vibration during operation. Most of the bearings are damaged or the bearing and the chassis are not properly mated. The motor must be dismantled for inspection. If the bearings are damaged, they should be replaced. If the bearings run out of the circle, the pump shell can be mated with the stencil treatment. If the bearings run in a circle, The wear part of the motor shaft is stenciled, and the wear is serious. The repair is performed by first surfacing after welding.
Sprinkler head
1. The motor runs normally but there is little or no water at all. This situation should first check the sprinkler pump seal, check should first unplug the power plug, hand plug the suction port, fill the water pump, with the mouth to seal the exit and blow in the air, observe the pump head is leaking The leaking point is where the seal is damaged. Common faults include suction pad, outlet pad, and impeller cover pad, which should be replaced during maintenance. If there is no full water phenomenon, the impeller is damaged, the water-retaining partition between the water-absorbing chamber and the outlet chamber is worn out, the pump head is covered with water, and the gap between the impeller and the pump casing is increased. The impeller and the pump casing should be replaced. . When replacing the rake wheel, care should be taken to completely remove the remaining copper blades in the pump so as not to damage the new impeller again.
2. The chassis is charged. Most of them are damaged by water seals. Water penetrates into the motor through the motor shaft and deteriorates the insulation performance of the motor. It can be repaired by replacing the water seal and drying the motor. It should be noted that because the water pump is exposed to water for a long time and it is open to work in the open air, it is prone to moisture and deteriorates the insulation performance. In order to ensure personal safety, the self-priming pump of the electric sprinkler should be reliably grounded.
Sprinkler winter maintenance
The space for parking Dongfeng sprinklers in the winter must be ventilated, not too humid, because the damp air is prone to corrosion paint and parts.
Sprinklers have to be parked for a long period of time. Attention should be paid to the aging, swelling, or deformation of rubber products such as tires. The longer the stopping time, the more difficult it is for the deformed parts to recover. If found, it must be promptly sent to the maintenance point for repair.
When the sprinkler stops in the winter, the battery will automatically discharge, so be sure to constantly check the battery's power, and add power in a timely manner.
Greening sprinklers are generally used less frequently, especially in northern areas where heavy snow lasts longer and the sprinkler has no way to operate, so it will stop for a long time. When winter sprinklers are parked, maintenance is very There are exquisite, here to tell you some maintenance methods.