#656-253, Sungsu-1ka, Sungdong-ku, Seoul, Korea
TEL: 02-469-1239 / FAX: 02-497-1270 / E-MAIL: [email protected] / WEB SITE: www.banseok.co.kr
Inconsistent deposits can result if:
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Air pressure controlling the valve is fluctuating.
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Air pressure supplying the reservoir is fluctuating.
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Air pressure controlling the valve is less than 4.8 bar (70 psi.)
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Check to be sure the air pressures are constant and the valve operating air pressure is 4.8 bar (70 psi).
The time the valve is open must be constant.
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Check to be sure the valve controller is providing a consistent output.
Inconsistent deposits.
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Fluid leaking out the drain hole on the side of the valve indicates the needle packings are worn.
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Replace needle packings.
Fluid leaks out the drain
hole
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A steady drip can be caused by a worn needle and seat, or a particle holding the needle off the seat.
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Remove the needle seat and nozzle, clean and inspect the needle and seat for wear. Replace worn or
damaged parts.
Steady drip.
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Air operating pressure may be too low. Increase air pressure to 4.8 bar (70 psi).
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The reservoir air pressure may not be high enough. Increase pressure.
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The needle stroke adjustment may be closed. If it is closed, open counterclockwise one full turn.
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Material may have clogged the valve head or output needle seat and nozzle.
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Clean the valve. (Refer to Maintenance & Cleaning)
No fluid flow.
Possible cause and correction
Possible cause and correction
Valve Trouble
Valve Trouble
8. Troubleshooting Guide
8. Troubleshooting Guide
