Pump question!
- Rob R.
- Site Moderator
- Posts: 17980
- Joined: Fri. Dec. 28, 2007 4:26 pm
- Location: Chazy, NY
- Stoker Coal Boiler: EFM 520
- Hand Fed Coal Stove: Chubby Jr
Yes, it can happen. The older Grundfos circulators were known for it. Make sure you have power at the circulators before you assume the are stuck.
If you confirm they are stuck, kill the power and isolate the circulators from the rest of the system. See if there is a screw in the middle of the motor that you can remove. If so you should be able to remove it and manually turn the impeller to break it free.
If all else fails, pull the motor and cartridge right out of the housing and get things freed up.
If you confirm they are stuck, kill the power and isolate the circulators from the rest of the system. See if there is a screw in the middle of the motor that you can remove. If so you should be able to remove it and manually turn the impeller to break it free.
If all else fails, pull the motor and cartridge right out of the housing and get things freed up.
Finally got around to working on the pumps. Maybe I am be too cautious but I just ordered 2 replacements even though the first one I removed "broke loose". I don't relish the idea of a mid heating season repair. The "used" pumps will go on the shelf.
- franpipeman
- Member
- Posts: 689
- Joined: Fri. Jan. 11, 2008 4:27 pm
- Location: Wernersville pa
- Stoker Coal Boiler: efm 520 stoker fitzgibbons pressure vessel
- Hand Fed Coal Stove: harman, russo
- Coal Size/Type: rice
- Other Heating: alpine propane condensing boiler radiant floor
all the above cures work. I also want to promote exercise say turn you pump s on once a month. If you can pipe your system with a modern condensing boiler many of them have a once every two weeks excercise cycle that turns the pumps on for a minute to prevent these types of seizures