Fuel Pump And/Or Couplings Replacement - Riello RL 70/E Installation, Use And Maintenance Instructions

Pump
The pump delivery pressure must be stable at 290 PSI.
The suction must be less than 6.5 PSI.
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 pump is found to be responsible, check to make sure that the
filter is not dirty. The vacuum gauge is installed up-line from the fil-
ter and consequently will not indicate whether the filter is clogged
or not. 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.
Nozzle
It is advisable to replace nozzles once a year during periodical
maintenance. Do not clean the nozzle openings.
Filters
Check the following filters:
• on line 1) • in pump 2) • at nozzle 3), and clean or replace as
required.
If rust or other impurities are observed inside the pump, use a sep-
arate pump to suck out any water and other impurities that may
have deposited on the bottom of the tank.
D707
Flexible hoses
Check to make sure that the flexible hoses are still in good condi-
tion.
Fuel tank
Every 5 years, or whenever necessary, suck out any water or other
impurities present on the bottom of the tank using a separate
pump.
Burner
Make sure that the screws are fully tightened.
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.
Maintenance
6.2.3

Fuel pump and/or couplings replacement

Dimension A)(Fig. 42) should set to 1/2".
Fig. 41
31 GB
A
D2854
Fig. 42
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