Hey Raja, Sorry to hear about the issues you are having in your unit. As Mike said it's most likely an airflow issue. just some quick background. I burned the 6041 for 4 years. It is the next gen of you unit only major changes were ignitor and location of agitator motor. Oh and BTW I was born/raised in NYC and lived many years in the Hudson Valley.
I'll assume you are using wood pellets (corn would be different). Just a little about clinker formations in wood pellets first so we understand how/why they form so we know where to look. There is really only 4 factors that contribute/effect clinker formations.
a. Ash content of pellets
b. Amount of silica in the pellets
c. presence of chloride (alkaline salts) in the pellets
d. Firebox temperature.
Silica will melt at 2100 degrees after it cools it fuses with ash and forms clinkers. Now if Chloride is introduced it will lower the melting point of the Silica to around 1500 degrees, this will increase clinkers. Now some units will produce them more if the firebox temperature is higher then others. So a way to reduce clinkers is to use only pellets that are graded to PFI premium standards. These will have lower ash content (less then 1%). Chloride is always less then 300ppm in all grades, as it only takes .25% (1/4%) to lower the melting point anyways. Silica varies greatly in pellets. Trying different brands may help. The last factor you can control easier. You may need the combustion air fan adjusted to lower the air flow as to not have a super hot (whiteish) flame. The idea is to get a good 10:1 or 12:1 air to fuel ratio. That unit is very adjustable regarding combustion air. I can work with you over the phone and dial it in if you choose to try this.
Seems to leak dust around the exhaust fan arbor and takes out my auger motors and is distributed thru my house by the convection blower. .
Again you have burned 30 tons of pellets so I'll assume you had this 5-7 years. When you take off the combustion fan each year do you/have you replace the gasket? use RTV? Sounds like the ash/soot that is leaking is getting sucked into the convection blower. Something in the vent system is not sealed most likely it's the combustion blower. The flange could have bent, the motor mount plate could be bent, or if you have never cleaned the fan it could be leaking at the shaft. If you want me to handle this for you I"ll PM you my extention and I can resolve this for you painlessly.
Cleaning the unit more then once a day is crazy. That should not be happening. Once or twice a week on that unit is more the norm.
Some questions..
When you do clean it are you vacuuming the Ash trap areas on the rear firebox wall on either side of the burnpot?
How often have you cleaned the combustion fan? Vent piping?
No matter I can resolve these and get the unit to run as intended. Weekly cleaning of firebox and ash areas are going to be norm. As well as at least a once a year break down cleaning of vent systen to include the combustion fan. I recommend resealing it with RTV and not reusing the gasket.
The fine issues happen if the pellets have a lot. You can also try sealing the hopper seams with RTV.
with this US stove if the firepot auger quit I had to clean the pot sometimes 3 times a day, that is what scared me about that particular build..
Thinking that is the agitator motor. There is a fix for that. It's free and I can send you one. You have an early made unit in latter years they had a insulation blanket that went between the firebox wall and the motor. The motor will fail quick due to the heat on that model and it was adjusted quickly. Your is a first 10k run. One of the first ones that were made of that model. Agin I can send it to you free of charge.