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20081753
GB
Maintenance
7.2.3
Safety components
The safety components should be replaced at the end of their life
cycle indicated in the following table.
The specified life cycles do not refer to the warranty terms indi-
cated in the delivery or payment conditions.
Tab. T
7.2.4
Measuring the ionisation current
The burner is fitted with an ionisation system to check that a
flame is present.
The minimum current for control box operation is 4 µA. The oper-
ator panel displays "30%" (see “List of parameters” on page 46,
parameter no. 954).
The burner provides a much higher current, so controls are not
normally required.
However, if it is necessary to measure the ionisation current, dis-
connect the plug-socket on the ionisation probe cable and insert
a direct current microammeter with a base scale of 100 µA, as
shown in Fig. 36.
7.2.5
Checking the air and gas pressure on the
combustion head
To carry out this operation it is necessary to use a pressure gauge
to measure the air and gas pressure at the combustion head, as
shown in Fig. 37.
Safety
component
Life cycle
Flame control
10 years or 250,000
operation cycles
Flame sensor
10 years or 250,000
operation cycles
Gas valves (solenoid)
10 years or 250,000
operation cycles
Pressure switches
10 years or 250,000
operation cycles
Pressure adjuster
15 years
Servomotor (electronic cam
(if present)
10 years or 250,000
operation cycles
Oil valve (solenoid) (if pres-
ent)
10 years or 250,000
operation cycles
Oil regulator (if present)
10 years or 250,000
operation cycles
Oil pipes/couplings
(metallic) (if present)
10 years
Flexible hoses (if present)
5 years or 30,000 pressurised
cycles
Fan impeller
10 years or 500,000 start-ups
WARNING
Carefully check the polarities!
Fig. 36
20076585
20076586
Checking
air pressure
Checking
gas pressure
Fig. 37
Содержание RS 310/EV BLU FS1
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