I replace the Taco 007-F5 circulator. The old one sounded like a washing machine and was not pumping any hot water. This is a 6 zone Crown boiler and the only issue I have is this one zone. The other 5 zones are doing fine and connected to an air coil in an air handler. This one serves baseboard in the common areas of this office building.

There is only a dribble of water coming out when I do a power purge on this zone. It has a Taco 218 Flowchek which I suspect is causing the issue. I think the other circ pump got fried to to no water flow.

The circ pump is on the return side into a return header with the other zones.

Here are some pics.
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