Final Checks; Maintenance - Riello RL 190/M Installation, Use And Maintenance Instructions

D2012
(A)
D1254
(B)
(D)
D1980

FINAL CHECKS

• Obscure the photocell and switch off the con-
trol devices: the burner should start and then
lock-out about 5 s after opening of the valves.
• Illuminate the photocell and switch off the con-
trol devices: the burner should start and then
go into lock-out after about 10 s.
• Obscure the photocell while the burner is in
operation,
sequence: flame extinguished within 1 s, and
starting cycle repetition.
• Switch on control device TL followed by control
device TS while the burner is operating: the
burner should stop.

MAINTENANCE

Combustion. It is required an analysis of the
flue gases at the boiler outlet. Significant differ-
ences with respect to the previous measure-
ments indicate the points where more care
should be exercised during maintenance.
Pump
The pump delivery pressure must be stable at
20 bar.
The depression must be less than 0.45 bar.
Unusual noise must not be evident during pump
operation.
If the pressure is found to be unstable or if the
pump runs noisily, the flexible hose must be
detached from the line filter and the fuel must be
sucked from a tank located near the burner. This
measure permits the cause of the anomaly to be
traced to either the suction line or the pump.
If the problem lies in the suction line, check to
make sure that the filter is clean and that air is
not entering the piping.
Filters (A)
Check the following filter boxes:
• on line 1) • at nozzle 2), and clean or replace
as required.
If rust or other impurities are observed inside the
pump, use a separate pump to suck out any
water and other impurities that may have depos-
D709
ited on the bottom of the tank.
Fan. Check to make sure that no dust has accu-
mulated inside the fan or on its blades, as this
condition will cause a reduction in the air flow
(C)
rate and provoke polluting combustion.
Combustion head. Check to make sure that all
the parts of the combustion head are in good
condition, positioned correctly, free of all impuri-
ties, and that no deformation has been caused
by operation at high temperatures.
Nozzles. Do not clean the nozzle openings.
Replace the nozzles every 2-3 years or when-
ever necessary. Combustion must be checked
after the nozzles have been changed.
Photocell (B). Clean the glass cover from any
dust that may have accumulated. Photocell 1)
can be removed by pulling it outward forcefully.
Flame inspection window (C) Clean the glass.
Flexible hoses. Check to make sure that the
flexible hoses are still in good condition.
Fuel tank. Every 5 years, or whenever neces-
sary, suck out any water or other impurities
present on the bottom of the tank using a sepa-
rate pump.
Boiler. Clean the boiler as indicated in its
accompanying instructions in order to maintain
all the original combustion characteristics intact,
especially the flue gas temperature and com-
bustion chamber pressure. Lastly, check the
condition of the flue gas stack.
TO OPEN THE BURNER (D)
- Switch off the electrical power
- Loosen screws 1) and withdraw the cover 2)
- Unscrew screws 3)
- Fit the two extensions 4) supplied with the
burner onto the slide bars 5)
Pull part A backward keeping it slightly raised to
avoid damaging the disk 6) on blast tube 7).
anche un fusibile di ricambio estraibile dopo aver
spezzato la linguetta del pannello che lo tiene in
sede.
14
the following must occur in