INSTALLATION, OPERATION AND MAINTENANCE MANUAL
15
Boiler cleaning
When the boiler is used, soot and fine ash accumulates on the boiler walls, mainly on heat exchanger ribs and in the flue neck,
which reduces heat transfer and the boiler output. The actual quantity of soot and fine ash will depend on the quality of the fuel
used and on the boiler operating conditions.
If the boiler is oversized or was for some reason run at low temperatures, more soot is generated. This may also result in inadequate
chimney thrust.
The boiler must be cleaned regularly, at least once a month, which is done with a steel brush through an open boiler door.
After taking front section plate off, all boiler walls inside the combustion chamber and combustion gases routes should be cleaned.
If a larger quantity of tar has accumulated on internal walls of the combustion chamber, it must be removed with a scraper or burnt
with hard wood (or coke), running the boiler at maximum operating temperature.
Please note
Ashes should be stored (by using proper glove) in a non-combustible container properly and transported outdoors. Other waste
must not be stored in this container.
fig.17
fig.18
