7
Mareli Systems
Additional instructions:
1. Remove the ash and slag from the boiler once a week or according to the volume of ashtray.
2. Check boiler flues periodically and clean them if there is congestion.
3. Check the burner adjustment once a year using a gas analyser.
4. Clean ash at the pellet hopper bottom once a year.
5. Clean boiler chimney once every two years.
6. If there is law draught in the chimney, install additional chimney suction fan. Its control is planned and
integrated in the control unit of the burner.
The maintenance timetable is recommended, cleaning must be made whenever necessary.
The need of cleaning varies individually, since the choice of pellets, the system itself, and the settings of the
burner affect the frequency of cleaning. Unforeseen risks upon cleaning and maintenance.
Hand burn hazard:
Possible reason – high temperature in the burning chamber. This risk exists in case of
unburned fuel pellet, as well as not cooled burner when cleaning by the user!
It may occur upon cleaning and maintenance of the burner. The use of special protective equipment (gloves)
is recommended!
Electrical shock hazard:
The maintenance of the burner during operation as well as under voltage is pro-
hibited! If a short circuit or possible damage occurs, an authorised technician should be called. Touching the
conducting parts is prohibited!
Dust in eye hazard:
May occur during work both upon cleaning and maintenance. The use of special protec-
tive equipment (safety goggles, tightly fitted) is recommended!
CAUTION: Periodic cleaning, as well as supervision of the burner will prevent any incidents caused by faulty
pellet fuel, incorrect slopes of burner and of screw conveyor, as well as incorrect combustion settings. Read this
manual before installing and working with the burner. The manufacturer bears no responsibility!
A burner with properly adjusted settings operates well and cost-efficiently. If there are problems, please, con-
tact the supplier for the removal of any defects or for setting up the burner.
POSSIBLE FAULTS AND TROUBLESHOOTING:
The verification shall be carried out only by a qualified electrical technician or an authorized by Mareli Systems
service centre.
The unit does not work:
•
Check the hopper for sufficient quantity of pellets.
•
Check operation of the heater.
•
Check operation of the screw conveyor (whether it feeds pellets). Check the flexible connection. The
facility does not start: (display is not illuminated).
•
Check fuses on the circuit board.
•
Check the power source for loose connections.
ATTENTION! CUT OFF THE POWER SUPPLY.
Ignition failure:
•
The initial dose of pellets is insufficient (increase parameter 02)
Faulty heater - check it with a multimeter
•
High fan speed (decrease parameter 04)
Fuel feeding is OK, but the ignition fails:
•
Check the igniting heater with a multimeter;
•
Check the voltage supplied to the igniting heater with a multimeter;
•
Upon interruption of the facility’s operation (poor combustion, etc.) check the condition of the flue and
clean any debris and soot caused by the condensation.
