Maintenance - Cuenod C 280 B 517/8 Manual De Utilización

Maintenance

Important
Maintenance operation should be
carried out regularly, at least once a
year and by qualified personnel.
· Cut off power at the multi pole
switch.
· Make sure there is no current.
· Close the fuel intake.
· Check for leaks;
Setting values are those indicated in
section Start up.
Use only the manufacturer's original
parts.
Checking the combustion
components
· Remove the electric plugs and
pressure tapping on the manifold.
· Remove both fuel oil tubes and both
screws 1 from the RTC® plate.
· Remove safety screw D.
· Remove mobile spindle E.
· Open burner body.
· Disconnect the four ignition cables
on the transformers.
· Loosen nut and side screw C
retaining gas and fuel oil feed line.
· Take out combustion components.
Q
· Clean entire unit.
· Check state and settings of the
following :
tubulators, ignition electrodes,
diffusers, ignition cables and
nozzles.
· Change the nozzles and the faulty
parts.
· Make sure the flat gasket is
available and in position on the gas
inlet line.
· Reassemble the whole unit.
· Make sure screw and nut C, fuel oil
tubes nuts and both screws 1 from
the RTC® plate are properly
tightened.
Removing the blast-tube.
This operation requires :
either the opening of the burner
–
body and the boiler door,
or removal of the burner.
–
1) Access via boiler door: Proceed as
indicated at the start of the previous
paragraph, up to Q "Withdraw the
combustion components". Then...
· Unscrew the three blast-tube screws
from the inside.
· Change blast-tube.
· If necessary, fill space between the
quarl and blast-tube with refractory
material.
m
Do not block pressure take-off pF.
· Re-assemble.
2) Removing burner :
Proceed as indicated at the start of
the previous paragraph, up to Q
"Withdraw the combustion
components". Then...
· Remove hoses, burner body, gas
train and combustion head.
· Unscrew the three blast-tube screws
from the inside.
· Change blast-tube and front seal.
· Re-assemble.
Cleaning air circuit
Depending on intensity and conditions
of operation of the burner :
· Clean the air stream circuit, the fan,
the flap and the body of the burner.
· Reassemble unit..
· Check the direction of rotation of the
ventilating motor.
Cleaning cell
· Remove cell from its seating.
· Clean with clean, dry rag.
· Re-fit.
Cleaning fuel oil filter
The filter is positioned outside the
spraying pump, on the suction or
booster pipe. It must be cleaned or
replace during each maintenance
operation.
· Close FUEL OIL valve.
· Put a container under the filter in
order to collect fuel oil.
· Remove cover.
· Remove filter, clean or replace it.
· Reinstall filter and cover with a new
seal.
· Open FUEL OIL valve.
· Check pressure and for any possible
leaks.
11/2003 - Art. Nr. 13 013 506A
Motor-driven pump unit
· Check the following :
– atomization pressure,
– absence of leaks in systems,
– coupling between pump and
motor,
– state of hose.
Checking gas filter
The external or valve filter (integrated
or pocket) must be examined at least
once a year and filter element changed
if filthy.
· Remove cover screws.
· Remove filter element. Make sure
no dirt is left in its cover.
· Install a new, similar element.
· Replace seal, cover and screws.
· Open ball valve.
· Check tightness.
· Check combustion.
Leakage controller
· Remove leakage controller.
· Check or replace filter elements
located on pe and pa.
· Reassemble unit.
· Check working order and for any
possible leaks.
Gas and fuel oil valves
These valves do not require any special
maintenance. The valves must not be
repaired. Defective valves must be
replaced by a qualified specialist, who
will then carry out new check-up for
leaks, correct running and combustion.
Checking connections
In the electric cabinet, on the
connecting terminal block, the
servomotor, the motor-pump unit, the
ventilation motor
· Check that wiring is fully tight to all
terminals.
Note
After each maintenance operation :
· Check gas and fuel oil combustion
under actual working conditions
(doors closed, etc.) and check all
circuits for possible leaks.
· Perform safety check-up.
· Record results in the relevant
documents.
EN
45