Ariterm Multijet 500, Инструкция по установке, эксплуатации и обслуживанию

Страница: 17 / 44

17
The temperature of the flue gas does not have a direct impact on combustion, but it has a
significant impact on overall efficiency. At low power settings, the fan power must be sufficiently
great to ensure that the burner’s air ducts stay clean. The above-mentioned guidance values can
then be exceeded.
The quantity and consistency of the ash is a good indication of the cleanliness of combustion. A
large amount of ash or ash mixed with unburned substances is a sign of impure combustion.
PLEASE NOTE! The quantity of ash can fluctuate up to ten times depending on the fuel selected!
The lower burner fan acts as a primary air fan. Adjusting the primary air adjusts the power of
the burner. Fine adjustment of the secondary air fan adjusts combustion. Burners of 150 kW or
more have two primary air fans.
PLEASE NOTE! Any changes to the settings will take at least a couple of minutes to take effect.
Adjustment tips
• If too much unburned fuel has accumulated on the grate and/or in the ash, the feed rate of
fuel to the burner auger should be cut and/or the fan revolutions increased. The movement
of the grate should be shortened.
• If the tip of the flame is black and the boiler is getting dirty quickly, the secondary fan
revolutions should be increased and/or the fuel feed rate cut.
• If the flame is bluish and burns unevenly, the secondary fan revolutions should be reduced.
• If the fuel includes lightweight particles, some of them may fly out of the burner with
airflow before the fuel has burned completely. This is evidenced by sparks in the fire
chamber and increased ash production. Some of this fly-out can be avoided by reducing the
air flow (fans).
• When the fuel or its consistency changes, the settings must be readjusted.
• At low power settings, depending on the fuel being used, it is possible to ventilate the
combustion air openings in the burner and prevent them from clogging. In that case, the
adjustment value of the primary air blower must be raised, then the increased airflow keeps
the holes open.
Please note! For the adjustments to be made, the equipment should be run with an almost full
load. An under-loaded boiler reaches its set temperature quickly and the burner moves into
an inactive stage, so the time required for adjustment can easily be too short. If the boiler is
introduced into use in the summer (under-loaded), it should be re-adjusted as soon as it can be
properly loaded.
Burner shutdown
The fuel in the burner, burner auger and intermediate tank must be burned away before the
device is shut down. The shutdown function in Arimatic automatic systems can be activated
from the USE menu. This function stops the operations of the storage auger and storage
discharger (if in use). Other functions of the system continue to work normally and will stop at
the flame control alarm when the fuel in the burner auger and hopper has burned out.
PLEASE NOTE! Ensure that the fuel is completely extinguished before you leave!
INTRODUCTION INTO USE