laing ddc pump noise problem

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18 Oct 2002
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Hi, I seem to have a problem with what appears to be either a rattle or air trapped in my laing ddc pump. I have tried squeezing the hoses tipping the pump up in all different directions, but the noise persists. Its driving me crazy as I can hear it above the fans and hard drives, has anyone had this problem and how did you solve it? Thanks for any help given.
 
Are you using the top inlet? If not give it a go(it also performs slightly better using the top as inlet).

The pump should be near silent when operating with only mild vibration. Does it sound like it is 'fizzing' - if so thens its air that is trapped inside. To cure this move the fan in a different orientation a few times and also power cycle it (on/off power a few times).
 
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