20146383
44
GB
Maintenance
Burner
Clean the outside of the burner.
Measurement of detector current
Measurement of the detector’s signal (Fig. 52) with a Voltmeter is
not normally required since the flame signal’s intensity is shown on
the AZL...display and operating unit.
Min. value for a good work: 3.5 Vdc (AZL display flame approx.
50%).
If the value is lower, it can depend on:
–
sensor positioned incorrectly;
–
low current (lower than 96V);
–
bad regulation of the burner.
To measure power, use a voltmeter with a 10 Vdc scale, connected
as illustrated in Fig. 52.
Boiler
Clean the boiler as indicated in its accompanying instructions in or-
der to maintain all the original combustion characteristics intact, es-
pecially the flue gas temperature and combustion chamber
pressure.
Nozzles
It is advisable to replace nozzles once a year during periodical
maintenance.
Do not clean the nozzle openings;
Hoses
Check that these are in good conditions.
Filters
Check the filtering baskets on line 1) and at nozzle 2) present in the
system.
Clean or replace if necessary.
If rust or other impurities are observed inside the pump, use a sep-
arate pump to lift any water and other impurities that may have de-
posited on the bottom of the tank.
Fuel tank
Approximately every 5 years, suck any water on the bottom of the
tank using a separate pump.
Combustion
If the combustion values found at the start of the intervention do not
satisfy current standards or anyway indicate a poor state of com-
bustion (consult the table below), contact the Technical Assistance
Service for the necessary adjustments.
Gas leaks
Make sure that there are no gas leaks on the pipes between the
gas meter and the burner.
Gas filter
Replace the gas filter when it is dirty.
Combustion
If the combustion values found at the start of the intervention do not
satisfy current standards or anyway indicate a poor state of com-
bustion (consult the table below), contact the Technical Assistance
Service for the necessary adjustments.
6.2.4
Safety components
The safety components must be replaced at the end of their life
cycle indicated in Tab. Q. The specified life cycles do not refer to
the warranty terms indicated in the delivery or payment conditions.
Tab. Q
GAS OIL OPERATION
Fig. 52
D3020
GAS OPERATION
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
present)
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
1
2
20162894
Fig. 53
Содержание RLAS 1000 EV
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