Pellet burner GP 45 IV 15
Figure 4.4. Fuel transport auger support bar view, for burner from series “GP 45 IV”.
4.2.
CONSTRUCTIONAL MEASURES FOR INCREASING THE OPERATION SAFETY
OF THE BURNER FROM SERIES “GP 45 IV”
The ignition and burning processes are monitored by micro-processor logic module;
The ignition and burning processes are monitored by photo-sensor and if the fuel
does not fire after two attempts for ignition, then the burner transits to “Stop” mode
with relevant indication for transiting to such mode;
If during operation the fuel hopper has been depleted the burner transits to “Stop”
mode with respectively activated indication for transition in such mode;
The flexible pellets transport pipe is transparent and is made of special temperature-
resistant material;
There are stickers (labels) indicating the proper operation and handling of the burner;
The burner is equipped with safety components for protection against fuel firing
(occurrence of the so called “back fire”):
Dropping flap chamber, which cuts the pellets flow from the transport auger to
the main module. The chamber depth is around 250mm. Besides that the
transport auger is connected to the burner through flexible pipe, which is not full
with fuel. There is small doze of fuel in the burner, which burns completely while
the transport auger operation is paused and there is no risk of reverse firing of
the fuel;
Emergency temperature sensor, positioned on the burner’s fuel feeding pipe,
which activates when the surface temperature in this zone exceeds 90 – 95
o
C. If
during operation this sensor registers temperature increase (90 – 95
o
C), then
the transport auger stops and the system transits to emergency mode,
respectively the burner operation stops as well. This is indicated on the burner’s
display with the sign “STOCKER FAULT”. After removing the normal operation
disturbance reason the burner can be started again by switching off and then on
its power supply (restarting);