Maintenance Position; Safety Components - Riello RDB 3.2 50/70 Mistral Installation, Use And Maintenance Instructions

9.2.3

Maintenance position

To access to the combustion head, electrodes and nozzle, pro-
ceed as follows:
 remove the burner out of the boiler, after loosing the fixing
nut to the flange.
 Hook the burner to the flange 1)(Fig. 21), by removing the
blast tube 2) after loosing the fixing screws 3).
 Remove the electrodes assembly 4)(Fig. 22) from the nozzle
holder 6) after loosing its fixing screw A)(Fig. 19 on
page 21).
 Replace the nozzle 5)(Fig. 22) and screw the new one on
properly, holding it as illustrated in figure.
 Refit following the above procedure in the reverse order.
2
E9109
4
5
6
E9110
Maintenance
9.2.4
The safety components must be replaced at the end of their life
cycle indicated in Tab. G. The specified life cycles do not refer to
the warranty terms indicated in the delivery or payment
conditions.
Safety component
Flame control
Flame sensor
Gas valves (solenoid)
1
Pressure switches
3
Pressure adjuster
Servomotor (electronic
cam) (if present)
Oil valve (solenoid) (if
present)
Oil regulator (if present)
Oil pipes/ couplings
(metallic) (if present)
Fan impeller
Fig. 21
Fig. 22
23 GB

Safety components

10 years or 500,000 start-ups
Life cycle
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
15 years
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years
Tab. G
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