Glow-worm Ultracom2 sxi - Service Completion; 19 Replacement of Parts; Burner Control

0020112600_02-10/12-Glow-worm
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MAINTENANCE
 
• Disconnecttheelectrodeinlet(3)andthegroundingcable(2).
• Removethe2sparkelectroderetainingscrews(4).
• Carefullyremovetheelectrodefromthecombustion
chamber.
• Checkthattheextremesoftheelectrode(6)arenot
damaged.
• Cleanawayanyaccumulationofdirtandcheckthatthe
distancebetweenthetwoelectrodesisbetween3.5and4.5
mm.
• Checkthatthegasket(5)isnotdamaged.Replaceif
necessary.
 
b
Warning: The burner door seal (12) must be
replaced each time the burner is dismantled.
• Disconnectthesparkelectrodeconnector(6)fromtheigniter
unit.
• Removethegaspipe(17).
• Removetheconnectorsfromthegasvalve(1)andthefan
(15).
• Removetheretainingscrewofthesilencer.
• Loosenthe4nuts(7).
• Removetheburnergroupfromtheheatexchanger(11).
• Thestuds(8)xedtotheheatexchangermustnot
bedamaged.Shoulditbedamaged,replacetheheat
exchanger.
• Theburnerdoorinsulationshouldnotbedamagedreplaceif
necessary.
 
• Cleanthecoil(19)intheheatexchanger(11)withwater.
 
• Theburner(13)doesnotrequiremaintenanceandshould
notbecleaned.
• Checkthatitssurfaceisnotdamage.Replacetheburnerif
necessary.
• Followingthevericationorreplacementoftheburner,
assembletheburnergroupasdescribedinthefollowing
chapter.
 
• Placetheburnergroupontheheatexchanger(11).
• Progressivelytightenthe4nuts(7)inanalternateorder.
• Reassemblethesilencer.
• Connectthegastube(17)withanewgaskettotheburner
group.
• Connectthesparkelectrodeconnector(6)totheigniterunit.
• Connecttheconnectortothegasvalve(1)andthefan(15).
• Opentheappliancegasinput.
• Checkthetightnessofthegasconnection.
 
• Re-checkthecombustion,seechapter"Combustioncheck".
Oncompletionoftheservice,the"Benchmark"ServiceRecord
souldbecompleted.
 
• Donotusereconditionedorcopyparts,onlyuseoriginal
partssuppliedbyGlow-worm.
• Ifapartisrequired,contacttheGlow-wormservice
organisation.
• Pleasequotethenameoftheappliance,thisinformationwill
beonthenamebadgeonthefrontoftheappliance.
• IfindoubtseekadvicefromthelocalgascompanyorGlow-
worm’sownserviceorganisation.
a
Replacement of parts must be carried out by a
competent person approved at the time by the
Health and Safety Executive.
PLEASENOTE:Duringchangeofpartofthecombustion
circuit,werecommendthatthefollowingisthefollowingmust
bechecked:
- Theintegrityoftheuesystemandtheueseals,
- Theintegrityoftheboilercombustioncircuitandtherelevant
seals,
- Theoperational(working)gasinletpressureatmaximum
rate,
- Thegasrate,
- Thecombustionperformance.