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  1. 22-12-2010, 06:19 PM #1
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    mori69
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    What reason are there for connecting and disconnecting the solenoid valve once per e

    Hi Dear Engineer s association

    Please look at the figure No.1 which is attached .
    This figure is about cntrolling screw compressor capacity.
    There are four solenoid valves in this picture which one of them is connected to capillary tube which is called CR4 and as is mentioned at the catalog that this solenoid valve is had electricity once per 10 seconds .
    now, I have a question (( What reason are there for connecting and disconnecting once per each 10 seconds ?))
    Thank you
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