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High pressure plunger spray pump
High pressure plunger pump warranty terms ******* Before using the plunger pump, carefully read the English manual and this manual ****** Warranty ter
Product details
Warranty terms for high-pressure plunger pump
******Before using the plunger pump, carefully read the English manual and this manual******
Warranty terms:
1. Under normal operation, the pump is covered by a one-year warranty from the date of delivery to the customer, and accessories such as pressure regulating valves and pressure gauges are covered by a three-month warranty. During the warranty period, the supplier provides free services.
2. Malfunctions caused by the following reasons are not within the warranty period, and paid services can be provided according to customer requirements:
1) Malfunctions caused by misoperation by the demand side or third parties
2) Conventional vulnerable parts (water seal, oil seal)
3) Malfunctions caused by the installation of spare parts from other manufacturers
4) Malfunctions caused by unauthorized disassembly by the purchaser or a third party
5) The use of the pump and its accessories exceeds the scope of use specified in the manual
Instructions for Use
1. The pump should be installed on a flat machine base with an angle of less than 15 degrees to ensure lubrication conditions
2. Confirm the inlet size of the high-pressure pump piping, and the diameter of the inlet pipe should be 1.5-2 times the inlet size of the pump. The inlet and outlet of the pump must be equipped with hoses to avoid pressure and fluctuations generated by the system. Avoid bending the pipeline and install an accumulator.
3. The water supply pressure should be between 1.5-8kg/cm2. The water supply temperature is below 70 ° C. The water supply system of the high-pressure pump must prevent air from entering to ensure that the pump components are not damaged.
Rotation direction: The rotation direction of the high-pressure pump is the direction in which the top of the pulley must face the pump head.
4. Before starting the motor pump system, the following must be done
1) Check if the crankcase lubricating oil is normal. If the oil level indicator of the gearbox has only one line, the oil level should not be lower than the line, but not higher than 5mm above the line. If the oil level indicator of the gearbox has two lines, the oil level should be between the two lines.
2) Confirm that all valves in the pipeline have been opened, and the medium can flow into the inlet of the pump, draining the air inside the system.
3) The operation of the high-pressure pump is not allowed to exceed the specified pressure, flow rate, and speed.
4) Before spraying, the high-pressure nozzle should confirm whether the spraying direction is safe. If there are unsafe factors, they should be promptly eliminated to ensure safe production.
5. When the working environment temperature is close to freezing point, the water in the high-pressure pump system should be drained after the work is completed. To remove moisture from the pump and facilitate placement in a freezing environment, the pump can operate for no more than 10 seconds without water ingress.
6. For systems equipped with overflow valves, the overflow pipeline must be a flexible hose, and the overflow pipe should not be connected to the inlet of the pump, but should be connected to a water tank or sewer.
7. When using a water storage tank for water supply, a hose of less than 3 meters should be used for the suction pipeline, and the water level should be set higher than the height of the pump. If the water supply pressure cannot reach the required pressure, it is recommended to use a booster pump.
8. Clean water should be used as the source of water supply, and filters should be used on the water supply pipeline to prevent the inhalation of foreign objects.
9. Before operating the high-pressure pump, the pressure regulating valve should be relaxed first, and then the pressure should be gradually increased as needed after operation.
10. Lubricating oil for refueling should use SAE30 or lubricating oil of the same level as this.
11. The inlet filter should be regularly inspected and cleaned.
12. All moving parts of the plunger pump must not be in a dry state.
13. High pressure pumps are not allowed to use acidic, alkaline, or corrosive liquids (except for stainless steel pumps).
Fault diagnosis
fault |
reason |
countermeasure |
|
The pump is running But it doesn't absorb water |
There is a problem with the water supply |
Open the water supply valve Confirm if the water supply pipeline is in a folded state Do not allow air to enter the water supply pipeline |
|
The pump is running But it cannot be achieved Pressure requirements |
The water supply pipeline is blocked Air enters the pump One way valve malfunction or foreign objects entering Pressure regulating valve malfunction or foreign objects entering Nozzle malfunction Sealing failure |
Check the suction pipeline Check the suction pipeline Wash or replace Wash or replace replace replace |
|
1. Sudden vibration occurs during pump operation 2. Unstable/pulsating pressure, no pressure operation |
Inhaled air One way valve malfunction or foreign objects entering The O-ring at the lower end of the one-way valve is damaged The one-way valve is damaged as a whole Component wear and tear The inlet pipeline is blocked, and the water inlet is obstructed
idling The accumulator has no pressure |
Check the suction pipeline Clean the safety valve and replace it Replace the O-ring Replace the check valve replace components Check if the system is blocked and if there are air leaks, and if the size of the pump inlet pipeline is appropriate Check if the inlet pipeline is blocked and if the size is appropriate Re pressurize or replace the accumulator |
Pressure drop, sudden drop in pressure in the conveying pipeline |
Seal wear Valve spring fracture Nozzle wear or damage Blockage of drainage valve Hose wear or damage Due to throttling, the pump is idling uninstall |
Replace the sealing component replace the spring Replace the nozzle Cleaning valve components Repair/Replace Check the inlet pipe at the entrance Check if it is working properly |
High operating noise |
Bearing wear idling |
Replace the bearing and refuel Check if the inlet pipe is blocked and if the size is appropriate |
Excessive unloading of overflow water |
Piston wear Component/seal wear Excessive vacuum Piston fracture Excessive inlet pressure |
Replace the plunger Adjust or replace the sealing components 降低吸入端真空度 Replace the plunger Reduce inlet pressure |
The temperature of the crankcase is too high |
Incorrect selection of lubricating oil The oil level in the crankcase is not appropriate |
Choose the appropriate lubricating oil Adjust the oil level to the appropriate level |
Water ingress into the crankcase |
The humidity is too high Seal wear |
Reduce oil seal spacing Replace the seal |
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