elco TRIGON L PLUS - Page 88

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Maintenance
Maintenance details
- Turn the unit up side down and
removetheburnercassette(8)from
theventilatorunit;
- Checktheburnercassettefor
wear and tear, pollution and any
breakages.Cleantheburner
cassettewithasoftbrushand
vacuum cleaner. In the case of
breakages,alwaysreplacethe
completeburnercassette(8);
Thefollowingoperationsmustbe
performed carefully in relation to the
vulnerabilityofthenonreturnvalve.
- Afterremovingtheburner
cassette (8) the non return valve
(12)becomesvisible.Check
that the non return valve entire
circumference closes / seals
completely. The valve (12) should
beabletomovefreelyfromfully
open to fully closed.
Replace the non return valve if the
valve does not seal properly. Follow
the instructions supplied with the
new part.
- Replacethegasket(9)betweenthe
burner(8)anduppercasing(10);
- Replacethegasket(11)between
the upper casing (10) and
exchanger.
- Check the venturi (13) for pollution
andcleanthemwithasoftbrushin
combinationwithavacuumcleaner,
if necessary.
Iftheinsideoftheboilercasingis
heavily polluted with dust, it is likely
that the fan impeller is also polluted.
Tocleanthefan,ithastoberemoved
from the upper tray and the venturi.
Cleantheimpellerwithasoftbrushand
a vacuum cleaner. Replace the gasket
and take care that the new gasket is
installedproperlywhenreassembling
the fan parts.
Reassemblytakesplaceinreverse
order.
Heat exchanger
- Check the heat exchanger for
pollution. Clean it, if necessary, with
asoftbrushandavacuumcleaner.
Avoid any pollution falling down.
NOTE: TOP-FLUSHING THE
EXCHANGER WITH WATER IS NOT
ALLOWED.
Reassemblytakesplaceinreverse
order.
During installation pay attention to
thecorrectpositionoftheclampbars.
Thesehavetobeinaverticalposition.
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