Almost added this to the Y strainer thread. But add this to the pre-season check list, if you shut down for the summer.
I decided to light the first fire last night & start getting my storage up to temp, since we're in a few wet cool & windy days here. Chill was starting to set into the house. Last year I burned all summer, but didn't this summer. So this summer was the first time my system went cold for a couple years or so. I also had my system open a month or so ago to swap my 110 gallon LP expansion tank out for a B&G bladder tank, so wanted to make sure there were no bugs before winter actually gets here
Anyway, did some bleeding & checking of pressures & fired up & all seemed well. But then after a bit I noticed the indicator light I had wired in to show when the boiler was calling for the loading unit (LK810) to run was on, but I couldn't hear the pump running. Boiler inlet temp was way below 140 (storage was 65). It's a 15-58 pump body and always on low speed. I tried switching to high speed but no go. So long story short, I had to get the endcap off the pump & manually free it with a screwdriver. It was stuck. Took me a while to do that too, in a tight place to get at and the slot thing you had to turn isn't exactly a nice screwdriver slot. Also had some uncertainty over the internal 810 isolation valve thingies - water squirted out the nibs while I was turning them. They didn't seem to leak any more after I got things running & the valves back open, but I don't think I'll use those again - not sure if that's typical of them or not.
Sounds like a sticking pump isn't uncommon in a 15-58, by reading the manual for it, but it's a first experience for me. The Alpha system pump worked fine - except for the air that locked a couple of my zones up from the tank swapping. Something to watch for at start of burn now, and maybe kind of lucky I was right there watching things.
I decided to light the first fire last night & start getting my storage up to temp, since we're in a few wet cool & windy days here. Chill was starting to set into the house. Last year I burned all summer, but didn't this summer. So this summer was the first time my system went cold for a couple years or so. I also had my system open a month or so ago to swap my 110 gallon LP expansion tank out for a B&G bladder tank, so wanted to make sure there were no bugs before winter actually gets here
Anyway, did some bleeding & checking of pressures & fired up & all seemed well. But then after a bit I noticed the indicator light I had wired in to show when the boiler was calling for the loading unit (LK810) to run was on, but I couldn't hear the pump running. Boiler inlet temp was way below 140 (storage was 65). It's a 15-58 pump body and always on low speed. I tried switching to high speed but no go. So long story short, I had to get the endcap off the pump & manually free it with a screwdriver. It was stuck. Took me a while to do that too, in a tight place to get at and the slot thing you had to turn isn't exactly a nice screwdriver slot. Also had some uncertainty over the internal 810 isolation valve thingies - water squirted out the nibs while I was turning them. They didn't seem to leak any more after I got things running & the valves back open, but I don't think I'll use those again - not sure if that's typical of them or not.
Sounds like a sticking pump isn't uncommon in a 15-58, by reading the manual for it, but it's a first experience for me. The Alpha system pump worked fine - except for the air that locked a couple of my zones up from the tank swapping. Something to watch for at start of burn now, and maybe kind of lucky I was right there watching things.
