Taco 007 replacement process, what am I missing?

t500

I have a Taco 007-f5 that has started buzzing and makes me think it is going bad.

My circulator pumps are separated from the boiler with valves and wondering is replacement should be as simple as it seems.

Should it be as easy as cutting power to the boiler/pumps, closing off all the valves to the pumps and the water fill, and then swap out the 007 pump? Will I be adding enough air into the system to require a manual bleeding?




Thanks for any advice.

Jamie Hall

Should be that simple. However, I can't quite make out where all the piping goes -- so yes, close all the valves which seem to be on pipes leading towards that pump, then loosen but do not remove all the way one of the flanges. You should get very little water -- if the water keeps coming, there's a valve somewhere which didn't get closed that needs to be, so tighten the flange back up and figure out where the water is coming from.

Then proceed. Probably not enough air to worry about.

DCContrarian

They could have made it easier on you by putting isolation valves on both sides of the circulator, but it's not too bad. To isolate the pumps, you need to turn off five valves -- the yellow fill valve on the far left, the red, green, orange and yellow valves on the vertical pipes. Note that the green is off now, you probably want to leave it that way.

You're going to drain about 18" of 1" pipe which will be a couple cups of water. It will be a neater job if you open the boiler drain at the bottom and drain into a container. However, there's a good chance that old drain is shot and when you open it you won't be able to get it to close without leaking. If this is a system you are responsible for maintaining, buy a new quarter-turn boiler drain and replace it while you have the chance. If it's not, don't touch it and accept the mess.

I like to put a brass hose cap on drains like that so they can't be accidentally opened.

Joe Mattiello

Surprised to hear pump is making noise. Have you checked the system pressure to make sure there’s no air in the system now?
did the pump just start making noise? Could be system debris fouling bearing faces?
you can always cal Taco tech support at 401-261-4890

t500

Joe Mattiello said:

Surprised to hear pump is making noise. Have you checked the system pressure to make sure there’s no air in the system now?
did the pump just start making noise? Could be system debris fouling bearing faces?
you can always cal Taco tech support at 401-261-4890

It definitely sounds like it would be bearing related, it is a buzzing sound isolated only at this pump and resonates through the house when running.

t500

Update: Thanks for everyone jumping in and answering my stupid questions. The replacement took about 30 minutes and I now have a 007e that is silent compared to the buzzbomb 007-f5 that it replaced.

HomerJSmith

I see that I am late with this reply. Replace it with a Grundfos UPS15-58FC, 3-Speed Circulator Pump. Try it on spd 1. You can take a Grundfos apart and clean it. You can't with a Taco. You must replace the cartridge or the whole pump. I suspect that the Taco 007 cartridge is bound up with debris. You can take the pump apart and rotate the impeller to see if it is binding. I have had this happen with cast iron in the sys. I never understood mixing iron pipe with copper, I think it is poor craftsmanship.