Riello MBC 1200/1 Manuel D'entretien page 58

6 Maintenance
6.1 Notes on safety for the maintenance
The periodic maintenance is essential for the good operation,
safety, yield and duration of the gas train.
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
must only be carried out by qualified, authorised
personnel, in accordance with the contents of this
DANGER manual and in compliance with the standards and
regulations of current laws.
Before carrying out any maintenance, cleaning or checking oper-
ations:
6.2 Maintenance programme
6.2.1 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.
6.2.2 Checking and cleaning
The operator must use the required equipment
during maintenance.
6.2.3 Filter maintenance
The filter is an integral part of the system's safety and must not
therefore be removed under any circumstances.
You are advised to carry out a periodic check to
see how clean it is and, in any case, replace it at
least once a year.
WARNING
Where the filter is being replaced regularly it is ad-
visable to replace the fixing screws.
MBC 1200/1
Replace the filter cartridge if:
the ∆p between the input pressure test point 10)(Fig. 1,
–
page 4) and the output pressure test point 13) is greater than
10 mbar
the ∆p between the pressure test points has doubled since
–
the last check.
To replace it:
➤ loosen the screws 1)(Fig. 12) of the cover 2) in the lower part
of the valve
➤ replace the filter cartridge 3)
➤ retighten the screws, but without forcing them
➤ perform an operating check and a leak detection check
p = 360 mbar.
max
2916122
Maintenance
Disconnect the electrical power using the main
switch.
DANGER
Close the fuel interception tap.
DANGER
Wait for the components in contact with heat
sources to cool down completely.
3
2
1
MBC 1900-3100-5000/1
Replace the filtering element if the ∆p between the pressure test
points 1) and 2)(Fig. 13) is greater than 10 mbar.
To replace it:
➤ loosen the screws of the cover 3)(Fig. 13) and carefully
clean the filter compartment
➤ replace the old filtering element with the new one
➤ replace the cover, then tighten the screws
➤ perform a leak detection check on the filter cover.
S8550
13 GB
3
1
S8569
Fig. 12
2
Fig. 13