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2 Description UTSK
Before carrying out any maintenance work on the automatic boiler tube cleaning
system, the compressed air tank of the cleaning system must be disconnected from
the air supply (e.g. by closing the ball tap or releasing the quick-action coupling on the
compressor). The compressed air tank of the cleaning system must then be vented by
opening the drain valve. During maintenance work the drain valve must remain open.
When opening the combustion chamber or boiler door, activation of boiler tube
cleaning is blocked by opening of the door limit switch. The safety valve must be
serviced or replaced in accordance with specific national regulations. When carrying
out maintenance work wear the protective gear.
2.4.7
Flue gas filter system (option)
To lower dust emissions even further, the gases can be additionally cleaned by a filter
system installed downstream from the multi-cyclone.
The flue gas fan is installed in accordance with the filter type on the inlet or outlet side
of the filter.
For further information refer to the order confirmation or the filter documentation,
if a filter was installed.
To be able to guarantee the required filter availability, the respective combustion
system must be run for a minimum running time of 5 hours in the load range of 30-
100% between standby/shutdown.
Underfeed grate UTSK
1.10 en
D-29
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