Squealing 7240.27

[Phyl]

My 7240.27 driver box for my 6100 just started squealing and the pump stopped working. What causes the box to squeal like that? Is there something wrong with the box or the pump?

What's the best first step for debugging the problem?

Thanks,
Phyllis

[shawnz28]

Here is the 1st step to try

http://reefcentral.com/forums/showthread.php?threadid=1071516

[Phyl]

D'oh. Search first. Ask questions later. So sorry.

Cleaning in progress, fingers crossed. Thanks for your time!

[shawnz28]

no problem at all...