Uneven distribution of chemical liquid in the bath

Why

• Insufficient mixing of the liquid / single feeding inlet of the liquid
• Location of the outlet and the inlet of the liquid circulation pipe is too close.
• Fabrics which pass through the liquid in high speed give a little effect to the mixing of the liquid.

Problem

• Finishing fault on one side of the fabric / occurrence of pin holes

Solution

• Improvement of the liquid mixing in the bath

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Water contamination at the re-start after holiday

Why

• Deterioration of the water feeding pipe
• sedimentation in the pipe during the stopping of the operation

Problem

• Contamination of the concentration controller inner part

Solution

• To equip an enforceable water draining device in the concentration controller to purge off the water at the start of operation

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Freezing inside the pipe at the location of low temperature area

Why

• Prevention measures against freezing for the auxiliary piping is not taken care, although the same for the main piping is done

Problem

• It gives damages to the pump at the start when the pipe is clogged by freeze

Solution

• Heat insulation

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Handling error when the controller stops by accident

Why

• The controller stops suddenly due to power failure while the controller is still under the operation cycle

Problem

• he equipment can be contaminated by the chemical liquid which is left inside the equipment until it is restarted and the equipment may become in trouble

Solution

• Use proper procedure to stop the equipment