Maintenance; Notes On Safety For The Maintenance; Maintenance Programme; Maintenance Frequency - Riello RS 34/E MZ Installation, Use And Maintenance Instructions

7

Maintenance

7.1

Notes on safety for the maintenance

The periodic maintenance is essential for the good operation,
safety, yield and duration of the burner.
It allows you to reduce consumption and polluting emissions and
to keep the product in a reliable state over time.
The maintenance interventions and the calibration
of the burner must only be carried out by qualified,
authorised personnel, in accordance with the con-
tents of this manual and in compliance with the
DANGER
standards and regulations of current laws.
Before carrying out any maintenance, cleaning or checking oper-
ations:
7.2

Maintenance programme

7.2.1

Maintenance frequency

The gas combustion system should be checked at
least once a year by a representative of the man-
ufacturer or another specialised technician.
7.2.2

Checking and cleaning

The operator must use the required equipment
during maintenance.
Combustion
The optimum calibration of the burner requires an analysis of the
flue gases. Significant differences with respect to the previous
measurements indicate the points where more care should be ex-
ercised during maintenance.
Combustion head
Open the burner and make sure that all the components of the
combustion head are undamaged, not deformed due to high
temperature, free of ambient dirt or dust, free of rusted materials
and adequately positioned.
Fan
Check to make sure that no dust has accumulated inside the fan
or on its blades, as this condition will cause a reduction in the air
flow rate and provoke polluting combustion.
Burner
Clean the outside of the burner.
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.
20068131
Maintenance
Disconnect the electrical supply from the burner
by means of the main system switch.
DANGER
Close the fuel interception tap.
DANGER
Wait for the components in contact with heat
sources to cool down completely.
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 combustion chamber
pressure.
Combustion
If the combustion values found at the start of the intervention do
not satisfy current standards or anyway indicate a poor state of
combustion (consult the table below), contact the Technical As-
sistance Service for 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
50 GB
Air excess
Max. output Max. output
  1.2   1.3
CO % Calibration
2
2
 = 1.3
 = 1.2
2
9.7
9.5
11.6 10.7
11.4 10.5
CO
mg/kWh
 1000
9
 1000
8.8
 1000
 1000
Tab. R