Use and maintenance:

1. It is recommended that the user unit appoint a special person to be responsible for use and maintenance

2. Regular maintenance 1-2 times a year is the best method for reliable operation and longevity of solenoid valves. The following four conditions inside the solenoid valve are the reasons that hinder the normal operation of the solenoid valve and shorten the life.

　　 ⑴, the medium changes during use 　　　　　　　　　　　　　

　　 ⑵, rust inside the takeover

　　 ⑶. The oil of the air compressor is oxidized to produce impurities such as carbon particles and tar, which are mixed into the pipeline 2.4 There are impurities such as dust particles and dirt in the pipeline

3. After the solenoid valve is installed or put into operation again after a long period of time out of service, the medium must be passed in for a few tries before it works normally before it can be used officially

4. When the steam valve is put into operation again after being out of service for a long time, the condensed water should be drained and tested several times before it can be put into operation after it works normally.

5.Before maintenance, the power must be cut off and the medium pressure must be removed.

6. The coil assembly should not be disassembled

7. When disassembling the solenoid valve for cleaning, you can use kerosene, trichloroethylene and other solutions. But it should be noted that the rubber parts may swell, so it must be replaced.

8. When disassembling and cleaning, all parts must be restored to their original state in order.

9. Our company has vulnerable parts, please specify when ordering according to the instructions when necessary.

10. If the disassembly sequence, wearing parts and other matters are unclear, please consult the technical department of the headquarters (enquiry hotline: 0577-61711948-8006)

■Installation instructions:

1. Before installation, you should read the product manual carefully, check whether the product fully meets the requirements for use, be familiar with the main points of installation, and make preparations.

2. When installing, the solenoid valve coil should be upward and keep the vertical position. The arrow or mark on the solenoid valve should be consistent with the flow direction of the pipeline. It should not be installed in a place with splashing or water leakage.

3. Fully flush the pipeline with a pressure of 0.3 MPa before taking over the pipe to completely remove the metal powder sealing material residue and rust in the pipeline; the working medium of the solenoid valve should be clean and free of particulate impurities. It is recommended to install a filter before the valve and install the steam pipeline Drain valve; the dirt and filter on the surface of solenoid valve inner parts must be cleaned regularly.

4. When the solenoid valve fails, in order to isolate the solenoid valve in time and ensure the normal operation of the system, it is best to install a bypass device.

5. Do not install the valve in a recessed part of the pipeline to prevent steam, condensate, impurities, etc. from depositing in the valve and hindering the operation.

6. Ordinary solenoid valves cannot be used in flammable and explosive hazardous situations.

7. In the case of insufficient pipe rigidity, it is recommended to fix the pipes before and after the valve with brackets to prevent vibration when the solenoid valve is working.

8. Pressure gauges should be installed on the pipes before and after the solenoid valve to observe the pipe pressure.

■Main dimensions:

malfunction

Cause Analysis

Approach

No action when energized

Poor power connection

Power supply voltage fluctuation is not within the allowable range

The coil is short-circuited or burned out

Connect the power cord

Adjust the voltage within the normal range

Replace the coil

Fluid cannot pass when the valve is opened

Fluid pressure or working pressure difference does not meet

Fluid viscosity or temperature does not match

Dirt and impurities are mixed around the valve core and the moving iron core

The filter or pilot valve hole before the valve is blocked

The working frequency is too high or the service life expires

Adjust pressure or working pressure difference or replace suitable products

Replace suitable products

To clean the interior, a filter valve must be installed before the valve

Clean the filter or pilot valve hole in time

Change product model or replace with new product

The fluid cannot be cut off when closing the valve

Fluid viscosity does not meet

Fluid temperature does not meet

Spring deformation or expiration of life

Defective valve seat or adhesion of dirt

The gasket comes out `defective or deformed

Clogged balance orifice

The working frequency is too high or the service life expires

Replace suitable products

Replace suitable products

Add gasket or replace spring

Clean, grind or renew

Update, reassemble

Clean in time

Then change the product model or change to a new product

Leakage

Loose pipe connection

Damaged outer seal of pipe connection

Tighten the bolt or takeover thread

Replace the seal

Serious internal leakage

Fluid temperature does not meet

There are impurities or defects in the pilot valve seat and the main valve seat

The pilot valve and the main valve seal come out or deformed

Poor assembly, deformation or expiration of life of the spring

Working frequency is too high when in use

Adjust fluid temperature or replace

If so, clean or grind to repair or replace

Replace the gasket

Replace the spring

Change product model or replace with new product

Excessive noise when energized

Loose fasteners

Voltage fluctuation, not within the allowable range

Fluid pressure or working pressure difference is not suitable

Fluid viscosity does not meet

Impurities on the suction surface of the armature

Tighten

Adjust to within the normal range

Adjust pressure or working pressure difference or replace product

Replace suitable products

Clean in time

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