Riello 3738051 Manuel D'entretien page 42

4.6 BURNER START-UP CYCLE
Normal
st
1 stage therm.
nd
2 stage therm.
Motor
Ignition transformer
st
1 stage valve
st
1 stage flame
nd
2 stage valve
nd
2 stage flame
Lock-out lamp
Lock-out due to
failure to shut-down
~
C
Lock out is indicated by a lamp on the control box (4, fig. 1, page 1).
D
In this case the burner will not reset because there is a serious fault.
CALL THE SERVICE AGENT
The authorized service agent must:
Restore the working by moving backward the control box, keeping
it supplied and acting on the reset tongue (see fig. 16).
Check the efficiency of:
Photoresistance (8, fig. 1, page 1).
st
1 stage interception valve (12, fig. 1, page 1)
Pressure adjuster piston (8, fig. 7, page 4)
5. MAINTENANCE
Burner requires a periodic maintenance carried out by a qualified and authorized technicians.
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:
Check that there are not obstructions or dents in the supply or return oil pipes.
Clean the filter in the oil suction line and in the pump.
Clean the photoresistance, (8, fig. 1, page 1).
Check for correct fuel consumption.
Replace the nozzle (see fig. 12, page 7) and check the correct position of electrodes (fig. 13, page 7).
Clean the combustion head in the fuel exit area, on the diffuser disc.
Leave the burner working without interruptions for 10 min. and check the right settings at 1 st and 2 nd
stage of all components stated in this manual. Then carry out a combustion check verifying:
Smoke temperature at the chimney;
Smoke value according to opacity smokes index according to Bacharach scale.
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Lock-out due to
failure to light
~
12s 3 – 28s
Lock-out due to
C
failure to shut-down
~
12s 5s
Content of CO ( % );
2
9 GB
D
12s 3 – 28s 20 – 60s
Fig. 16
E9071
Content of CO (ppm);
D6042