KA2 shut down -Again!
I did a complete cleaning about a month ago but I am getting this "studdering" of the stoke pusher plate. Spoke with Keystoker this morning and they suggested checking the nylon guide screws and to check if the opening where the eccentric is is damaged.
Will get it done for the end of the heating season!
Will get it done for the end of the heating season!
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- Member
- Posts: 2412
- Joined: Sun. Mar. 25, 2007 8:41 pm
- Stoker Coal Boiler: Keystoker KAA-4-1 dual fuel boiler
- Hand Fed Coal Boiler: former switzer CWW100-sold
- Coal Size/Type: rice
- Other Heating: kerosene for dual fuel Keystoker/unused
That is one of many reasons I backed the stoker off to 13 threads out and
reduced the throat width of the hoppers draw point by 4 inches in width
with steel flat stock.
I have not changed the factory setting of the combustion air blowers
shutter door and as a result the stoker is creating a hotter fire and cleaner
burn with a much smaller amount of coal per stroke of the pusher bar.
A much smaller amount of coal is burning nearly white hot and I am very
happy with how it is running using the mechanical triple aquastat.
My boiler is dumping a great deal of heat excess heat as well.
I will be reducing the width of the hopper draw point next year to reduce
my coal use even further.
I have been averaging 3 gallons of fly ash and bottom ash in total per day
and some days much less.
reduced the throat width of the hoppers draw point by 4 inches in width
with steel flat stock.
I have not changed the factory setting of the combustion air blowers
shutter door and as a result the stoker is creating a hotter fire and cleaner
burn with a much smaller amount of coal per stroke of the pusher bar.
A much smaller amount of coal is burning nearly white hot and I am very
happy with how it is running using the mechanical triple aquastat.
My boiler is dumping a great deal of heat excess heat as well.
I will be reducing the width of the hopper draw point next year to reduce
my coal use even further.
I have been averaging 3 gallons of fly ash and bottom ash in total per day
and some days much less.
-
- Member
- Posts: 2412
- Joined: Sun. Mar. 25, 2007 8:41 pm
- Stoker Coal Boiler: Keystoker KAA-4-1 dual fuel boiler
- Hand Fed Coal Boiler: former switzer CWW100-sold
- Coal Size/Type: rice
- Other Heating: kerosene for dual fuel Keystoker/unused
I can tell you reducing the drawpoint size in width by 4 inches works and
works very well and the fire does not suffer from lack of fuel.
I will be reducing the drawpoint square area width by another 2 inches
for the next heating season.
works very well and the fire does not suffer from lack of fuel.
I will be reducing the drawpoint square area width by another 2 inches
for the next heating season.
- Retro_Origin
- Member
- Posts: 1145
- Joined: Sun. Feb. 21, 2021 7:46 pm
- Stoker Coal Boiler: 1957 Axeman Anderson 130
- Coal Size/Type: Buckwheat / Pea
Leon, could you snap some pictures of this setup and perhaps your firebed the next time your hopper gets low enough? I've never seen a k2 In person and would like to understand your modification. Hope all is well!
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- Member
- Posts: 2412
- Joined: Sun. Mar. 25, 2007 8:41 pm
- Stoker Coal Boiler: Keystoker KAA-4-1 dual fuel boiler
- Hand Fed Coal Boiler: former switzer CWW100-sold
- Coal Size/Type: rice
- Other Heating: kerosene for dual fuel Keystoker/unused
I filled the hopper this morning and it will take at least 3 days to get it low enough
to take some pictures of the flat stock covering the reduced draw point.
Would you like pictures of both a long heat call fire and a hold fire?
My kaa-4-1 and a Kaa-2 are practically identical as they share the same three bed stoker.
The exceptions are the smaller water volume, smaller exterior dimensions and the kaa-4
does not have water filled baffles in the design.
to take some pictures of the flat stock covering the reduced draw point.
Would you like pictures of both a long heat call fire and a hold fire?
My kaa-4-1 and a Kaa-2 are practically identical as they share the same three bed stoker.
The exceptions are the smaller water volume, smaller exterior dimensions and the kaa-4
does not have water filled baffles in the design.
- Retro_Origin
- Member
- Posts: 1145
- Joined: Sun. Feb. 21, 2021 7:46 pm
- Stoker Coal Boiler: 1957 Axeman Anderson 130
- Coal Size/Type: Buckwheat / Pea
Pictures of both fire states would be appreciated!