My stove wasn't keeping the living area to set temp well these past weeks. Only when temps got down to zero or below. I wasn't sure if it was the new batch of coal or because of other variables in the home like our Doggy Door being open or not. Or if the cellar door for cold air return should stay open all the way or it was o.k. to keep it open just a little. Anyway yesterday I took the ESP out and cleaned it good with steel wool and some 400 grit sandpaper. I also ground the mounting area to get it shiny for a good ground when the mounting plate and screw got installed. That did the trick. I is - 4 deg F as I type and temp is right were we have had it set since last November. 69 deg in the living room. Any hotter I go nuts. I dress warm for when I go out and don't need to have it warmer in here or need to take off my heavy socks,etc. Not until Spring.
Maybe some of the oil dripped on the ESP from lubeing the shaft and effected the ground,etc. But it works great. Also what I did when I had the plate off was to enlarge the shaft hole and it slides easier as well. So no more oil. Ha.
I made two cold air returns with a large blower connected blowing air into the basement, today removed that system, way to much CFM, I think I was sucking the heat out of the up stairs and blowing it in the basement. I used the cold air returns to supply heat up stairs today, not sure how it will work, tonight will tell when I get home from work at midnight. Last night the kitchen and dining room were 84, and living room 74 where the sensor is mounted I have the heat at 70/75. I have the feed rate at 1 1/2 as you said, if any more the hot ash falls off when stoker is working hard. The dist Blower is on "L" and sensor is in living room(up stairs) about 20ft away from stove(in basement) hanging down from behind TV mounted on wall. My cleaning handle also sticks, I though because it was new. The difference I see between the Mag and super Mag, grates are cemented in on the super, the super Mag.has a scraper to push fine coal dust into the fire, my mag fills the removable pan in two the three days, the super is much more efficent, even heat and very quiet, the mag I have in my garage over heats on warm days,noisy dist blower. Feed rate on the super is very simple to adjust. I paid $3250 and it was worth every penny. I've been dropping $100 a day at Home Depot and Lowe's on pipe, adapters, and supplies. I'll get this Harman heating the house evenly, just it time for the warm weather, really happy the cold is coming back, I like testing the system. Thanks for allyour help.