Riello GI/EMME 1400 Installation, Use And Maintenance Instructions page 42

LIGHT OIL OPERATION
Pump
The delivery pressure must comply with the graph on page 18.
The depression must be less than 0.45 bar.
Unusual noise must not be evident during pump operation.
If the pressure is unstable, or 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 piping or the pump. If the problem lies in the suction line,
check the filter is clean and that air is not entering the piping.
Filters
Check the filtering baskets on line and at nozzle present in the
system.
Clean or replace if necessary.
If rust or other impurities are observed inside the pump, use a
separate pump to lift any water and other impurities that may
have deposited on the bottom of the tank.
Nozzles
It is advisable to replace nozzles once a year during periodical
maintenance.
Do not clean the nozzle openings.
Flexible hoses
Check to make sure that the hoses are still in good condition.
Fuel tank
Approximately every 5 years, suck any water on the bottom of the
tank using a separate pump.
Combustion
If the combustion values measured before starting maintenance
do not comply with applicable Standards or do not indicate
efficient combustion, consult the table below or contact our
Technical Support Service to implement the necessary
adjustments.
EN 267
Theoretical max CO
2
0 % O
2
15.2
20160907
Air excess
Max. output Min. output
  1.2   1.3
CO % Calibration
2
 = 1.2  = 1.3
12.6 11.5
Maintenance
Gas leaks
Make sure that there are no gas leaks on the pipe between the
gas meter and the burner.
Gas filter
Change the gas filter when it is dirty.
Combustion
If the combustion values measured before starting maintenance
do not comply with applicable Standards or do not indicate
efficient combustion, consult the table below or contact our
Technical Support Service to implement the necessary
adjustments.
EN 676
Theoretical max
CO
GAS
0 % O
G 20 11.7
G 25 11.5
G 30 14.0
G 31 13.7
CO
mg/kWh
 100
Tab. Q
40 GB
GAS OPERATION
Air excess
Max. output Max. output
  1.2
CO % Calibration
2
2
 = 1.2
2
9.7
9.5
11.6
11.4
CO
  1.3
mg/kWh
 = 1.3
 100
9
 100
8.8
 100
10.7
 100
10.5
Tab. R