Maintenance method of single-head solenoid reversing valve

Maintenance of single-head solenoid directional valves requires daily inspection, regular cleaning, lubrication and maintenance, troubleshooting, installation specifications, environmental control, professional maintenance, etc. The specific methods are as follows:

1. Daily inspection

Power supply inspection: Regularly check whether the power wiring is in good condition and ensure that the power supply voltage is within the working range of the solenoid reversing valve. If the power supply voltage is unstable or out of range, adjust or install a voltage stabilizing device in time.

Appearance inspection: Check the appearance of the solenoid reversing valve for damage, deformation or leakage. If there is any abnormality, it should be dealt with or replaced in time.

2. Regular cleaning

Internal cleaning: According to usage conditions, regularly disassemble the solenoid reversing valve for internal cleaning. Remove impurities and dirt on the valve core, valve seat and other parts to ensure that the channels in the valve are unobstructed.

External cleaning: Keep the outside of the solenoid reversing valve clean to prevent dust, oil and other impurities from entering the valve. Wipe the surface of the valve body with a clean cloth to keep it dry and clean.

3. Lubrication and maintenance

Lubricating oil selection: According to the usage requirements of the solenoid reversing valve, select the appropriate lubricating oil for lubrication. The lubricating oil should have good lubrication and anti-corrosion properties to extend the service life of the solenoid reversing valve.

Lubrication cycle: regularly add lubricating oil to the sliding part of the solenoid reversing valve to ensure its flexible movement and no sticking. The lubrication cycle can be determined according to usage conditions. It is generally recommended to perform lubrication maintenance every 3-6 months.

4. Troubleshooting and handling

Common faults: Common faults of solenoid reversing valves include valve failure or slow reversing action, gas leakage, solenoid pilot valve failure, etc. These failures may be caused by poor lubrication, stuck or damaged springs, oil or impurities blocking the sliding part, wear of the valve core seal, damage to the valve stem and valve seat, etc.

Troubleshooting: Take corresponding measures according to different fault causes. Such as cleaning the sliding part of the reversing valve, replacing the lubricating oil, replacing the spring and reversing valve, replacing the sealing ring, valve stem and valve seat, etc.

5. Installation and usage specifications

Installation position: The electromagnetic reversing valve should be installed on a horizontal pipeline, and the coil should be pointed vertically upward to avoid leakage and shortened life due to vertical installation. At the same time, a certain operating space should be reserved at the installation location to facilitate daily maintenance and regular maintenance.

Medium requirements: Ensure that the fluid has no impurities, no crystallization, no solidification, no scale, no paste, and the viscosity meets the requirements of the electromagnetic reversing valve. If necessary, install a filter on the front pipe of the solenoid directional valve to prevent impurities from entering the valve.

Avoid reverse installation: Electromagnetic reversing valves can generally only be used in one direction and cannot be installed reversely. There is usually a '→' mark on the valve body to indicate the flow direction of the medium, or the English letters 'IN' represent the inlet, and 'OUT' represent the outlet. Please be sure to install it according to this direction.

6. Environmental control

Temperature control: Avoid the solenoid reversing valve from working for a long time in high or low temperature environments to avoid affecting its performance and life. When used in freezing or severely cold places, the pipes and valve body must be insulated with insulation materials or a heater must be installed on the pipes.

Moisture-proof and dust-proof: Keep the installation environment of the solenoid reversing valve dry and clean to avoid moisture and dust from causing damage to the valve's internal components.

7. Professional maintenance and replacement

Professional maintenance: When the solenoid reversing valve fails, if you do not have the ability to repair it yourself, you should contact professional maintenance personnel for repair in time. Avoid expanding the fault or damaging other components due to self-disassembly or improper repair.

Replace new valves: For electromagnetic reversing valves that cannot be repaired or are too expensive to repair, new valves should be replaced in time. When replacing a new valve, you should choose a product with the same model and specifications as the original valve to ensure its performance and compatibility.