Maintenance - Cuenod NC9 GX207/8 Notice D'emploi

Maintenance

Important
The burner should be serviced at least
once a year by a trained specialist.
· Turn off power supply at isolator
switch.
· Check absence of voltage.
· Close gas input.
· Check for leaks:
Do not use pressurized liquids or
chlorinated products.
The setting values are indicated in the
paragraph: "Start-up".
Use only original spare parts.
· Remove the burner cover.
Cleaning
General main board access
· Loosen the four screws 5 five turns.
· Work the board free and pull until
completely clear.
· Hang the board from hanging point 7.
air box
· Remove screw K.
· Remove the air box.
· Use a dry paintbrush to remove dust
from the air box and sound-proofing
foam.
· Reassemble.
Volute
· Use a paintbrush to remove dust
from inside the volute, fan, blast
tube, recycling piece, air flap and air
pressure switch take-off.
Firing head
· Loosen (clockwise) the locking nut
on the gas head.
· Loosen completely (counterclockwise)
the spherical head screw E.
· Remove the firing head.
· Disconnect the ignition cable from
the electrode and the ionization
cable from the probe.
· Check the adjustment and condition of:
the ignition electrode on the stop
against the gas star, the ignition
probe and the turbulator.
· If necessary, replace these parts.
· Reassemble.
· When reassembling, check presence
and position of the O-ring seal J2.
· Check for leaks.
06/2004 - Art.Nr. 13 011 288C
Blast tube disassembly
· Disconnect the 7P connector.
· Remove the two screws that fasten
the valve assembly on the case.
· Unscrew the clamping ring screw.
· Withdraw the burner and place it on
the floor.
· Unscrew the four blast tube screws
by five turns and remove it.
· Replace, position and fix the blast
tube.
· Follow the same procedure in
reverse order to reassemble.
· If necessary, fill the space between
the test hole and the blast tube with
a refractory material.
· Check for leaks.
Gas valves
The gas valves require no special
maintenance. No repairs are to be
carried out to the valves.
Defective valves should be changed by
a suitably qualified technician, who will
then repeat the leakage, operation and
combustion test procedure.
Checking connections
On electrical plate, fan motor and
servomotor.
Cleaning the cover
No chlorinated or abrasive product
should be used.
· Clean the cover with water
containing a detergent.
· Put the cover back in place.
N.B.
After every maintenance operation:
· Check the combustion parameters
under actual service conditions (doors
closed, cover on, etc.) and test the
various systems for gas leaks.
· Record results in the relevant
documents.
EN
49