5.4 Fuel feed
5.4.1 Fuel selection
System menu
Fuel
feed
Fuel selection
Select fuel
Defines which fuel type is used. The selected fuel has an
impact on the preset boiler parameters.
Adopt specification values for fuel type
The preset boiler parameters for the chosen fuel selection
are adopted.
5.4.2 Output settings
System menu
Fuel
feed
Output settings
Minimum power
Minimum power as a percentage at which the fuel supply
can be operated.
Manual infeed
Infeed in percent in manual mode.
Feed screw infeed time
This is the feed time in seconds, during which the feed
screw is active after the pre-run time of the stoker screw
(“Stoker flow time” parameter).
5.4.3 Stoker
System menu
Fuel
feed
Stoker
Stoker filling time
This is the time the empty stoker screw requires to feed
material from the gravity shaft to the combustion chamber.
This time must be set exactly, as otherwise there can be
an loading fault. If the time is set too long, too much
material is fed into the retort during ignition. If the time set
is too short, the “material gap” in the stoker screw will not
be eliminated. It is only possible to remove a material gap
automatically, if the system has a burn back flap and the
burn back flap is closed during ignition.
Stoker flow time
Specifies the pre-run time of the stoker screw in seconds
before the feed screw for emptying the gravity shaft is
activated.
Stoker emptying time
Specifies the time for the complete emptying of the stoker
in seconds. When the boiler is shut down (operating status
"slumber" or "Off") the stoker screw is controlled in cycles
until the time arrives to empty the stoker and prevent a
burn back.
Menus and parameters
5
Fuel feed
Service manual SPS 4000 | B0960622_en
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