Lifetech 4660 pumps really noisy

18 Feb 2013
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Cape Town
Hi guys

I turned one of my systems on yesterday after some time and when I did the the lifetech 4660 return pump was making a really loud noise.

I firstly thought that it was vibrating and rattling against the glass but then i lifted it up and held it away from the sides making no contact with any glass and it continued to make the noise. So it looks like it is coming from the inside of the pump.

Does anyone know what it could possibly be?
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