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Email: sales@khnwatertreatment.com

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Email: sales@khnwatertreatment.com

Add:No.26 Chuangye Road Heqiao Town Yixing City Jiangsu China

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Fault analysis of EDI ultra pure water equipment

Sep 12,2018

phenomenon

Possible reasons

Corrective measures

Component pressure drop is too large.

EDI components are contaminated

Find out the cause of pollution and adopt corresponding cleaning methods.

The flow is too large

Adjust flow according to the requirements in operation instruction.

Component pressure drop is small.

The flow is too small

Adjust flow according to the requirements in operation instruction.

Water production is too small.

EDI components are contaminated

Find out the cause of pollution and adopt corresponding cleaning methods.

Incorrect opening of valve

Check and ensure that all valves should be open and adjust the valve opening.

Flow meter problem

Check flow meters to ensure proper operation.

Water pressure is too low.

Identify and solve this problem.

Poor water quality

Inlet water quality exceeds permitted range.

Check the influent water quality, C02 concentration is too high is the common cause of affecting water quality.

Incorrect electrode connection

Immediately uninstall the system and correct the line.

Individual components fresh water interface dislocation

Close the wrong connection module inlet and outlet valve and correct the nozzle.

One or more components are not energized.

Check rectifier output current and wiring resistance.

The total current is too low.

Check whether the conductivity of concentrated water is too low, check whether the components are scaled, and check the rectifier.

The current of one or more components is too low or too large.

Check whether the wiring of grouped series connection is wrong as parallel connection.

The pressure of concentrated water is higher than that of producing water.

Reset the concentrated water pressure to 0.4~0.8bar below the fresh water pressure. See instructions for details.

The conductivity of concentrated water is too low.

The recovery rate of water is low.

Check the discharge of concentrated water may be too high.

Conductivity decreased

Add salt to concentrated water to increase its water conductivity.

Salt adding system

Verify the salt solution in the measuring container, confirm the normal power supply of the measuring pump, and confirm the normal working state of the measuring pump.

Low concentration of concentrated water

Concentrated water pump

Confirm that the concentrated water pump has started and the air has been discharged.

Components contaminated

Check the causes of pollution and take appropriate cleaning methods.

valve

Check the setting of bypass valve for concentrated pumps.

Excessive discharge of concentrated water

valve

Check the setting of concentrated water discharge valves.

Extreme water discharge is too low.

valve

Check the setting of the drain valve.

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  • Add:No.26 Chuangye Road Heqiao Town Yixing City Jiangsu China
  • Tel:+86-510-87877760
  • Fax:+86-510-87877760
  • Ph:+8617751526380
  • E-mail:sales@khnwatertreatment.com

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