Burner Start-Up Cycle; Air Pressure Switch; Maintenance; Faults / Solutions - Riello GULLIVER BS1 Manuel D'entretien

4.3 BURNER START-UP CYCLE

Normal
Thermostat
Motor
Ignition transformer
Valve
Flame
Lock-out
A
Lock-out is indicated by a lamp on the control box (4, fig. 1, page 1).
When the flame-failure occurs during working, shut down takes place within one second.

4.4 AIR PRESSURE SWITCH

Adjust the air pressure switch after having performed all other burner adjust-
ments with the air pressure switch set to the start of the scale.
With the burner operating at the required power, slowly turn knob clockwise
until burner locks out.
Then turn the knob anti-clockwise by about 20% of the set point and subse-
quently check to see if burner has started correctly.
If the burner locks out again, turn the knob anti-clockwise a little bit more.
Attention:
As a rule, the air pressure switch must prevent the air pressure from lowering
below 80% of the adjustment value as well as preventing the CO in the fumes
from exceeding 1% (10,000 ppm).
To check this, insert a combustion analyser into the chimney, slowly close the fan suction inlet (for example
with cardboard) and check that the burner locks out, before the CO in the fumes exceeds 1 %.
5.

MAINTENANCE

Burner requires a periodic maintenance, which is essential for the reliability of the burner, avoiding the
excessive consumption of fuel and consequent pollution.
THE BASIC CHECKS ARE:
Leave the burner working without interruptions for 10 min. and set rightly all the components stated in this
manual. Then carry out a combustion check verifying:
• Content of CO ( % )
2
6.

FAULTS / SOLUTIONS

Here below you can find some causes and the possible solutions for some problems that could cause a fail-
ure to start or a bad working of the burner.
A fault usually makes the lock-out lamp light which is situated inside the reset button of the control box
(pos. 4, fig. 1, page 1).
When lock out lamp lights the burner will attempt to light only after pushing the reset button. After this if the
burner functions correctly, the lock-out can be attributed to a temporary fault.
If however the lock out continues the cause must be determined and the solution found.
2146
40s min. 3s max.
• Content of CO (ppm)
Lock-out, due to light failure
40s min.
• Smoke temperature at the chimney.
9 GB
A
D5007
3s max.
D5471