Riello 747M Manuel D'entretien page 52

5. WARNINGS TO AVOID BURNOUT OR BAD COMBUSTION OF THE BURNER
1 – When the burner is stopped, the smoke pipe must be opened and effect a natural draught in the
combustion chamber. If the smoke pipe is closed, the burner must be drawn back till the extraction
of blast tube from the furnace. Before operating in this way take the voltage off.
2 – The place, where the burner works, must have same openings suitable for the passage of air
necessary for combustion. To be sure about this, you have to control CO 2 and CO in the exhaust
gases with all the windows and doors closed.
3 – If in the place, where the burner works, there are air-breathings, check the existence of air-input
openings with dimensions suitable for the necessary air-exchange. In any case check that, when
the burner is stopped, the air-breathings do not draw warm smokes from pipes through the burner.
6. MAINTENANCE
The burner requires periodic maintenance carried out by a qualified and authorised technician in conformity
with legislation and local
Maintenance is essential for the reliability of the burner, avoiding the excessive consumption of fuel and
consequent pollution.
Before carrying out any cleaning or control always first switch off the electrical supply to the
burner acting on the main switch of the system.
THE BASIC CHECKS ARE:
Leave the burner working without interruption for 10 min., checking the right settings of all the components
stated in this manual. Then carry out a combustion check verifying:
CO ( %) content

2
20014622
standards.
Smoke temperature at the chimney

CO content (ppm).

14 GB