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14.9 Platenwarmtewisselaar (enkel voor ketel ZWB)
Bij onvoldoend uitstroomdebiet:
Koudwatertoevoer sluiten. Koudwatertoevoerleiding los-
maken en filter op vervuiling controleren.
Demonteer de platenwarmtewisselaar en vervang hem.
- of -
Ontkalk met een ontkalkingmiddel dat geschikt is voor
roestvrij staal. (af te raden)
Demontage van de platenwarmtewisselaar
Schroef bovenaan losdraaien en platenwarmtewisselaar
wegnemen.
Monteer een nieuwe platenwarmtewisselaar en gebruik daarbij
nieuwe dichtingen. Schroef bovenaan terug vastdraaien.
Fig. 50
14.10 Warmtewisselaar, brander en elektroden
Voor de reiniging van de warmtewisselaar is een speciale borstel leverbaar.
(toebehoren N° 1157, bestelnummer 7 719 003 007).
Controleer de onderdruk bij max. nominaal warmte-
vermogen aan de mengkamer.
Fig. 51
type ketel
stuurdruk
reiniging nodig?
TOP 14-3 CE ZSB
≥ 3,0 mbar
nee
< 3,0 mbar
ja
TOP 22-3 CE ZSB
≥ 2,6 mbar
nee
< 2,6 mbar
ja
TOP 22/28-3 CE ZWB
≥ 4,5 mbar
nee
< 4,5 mbar
ja
Indien een reinigingsbeurt nodig is:
Gaskraan sluiten.
Aanzuigbuis demonteren en gasbuis van de mengkamer
aftrekken.
Mengkamer demonteren.
Kabel van de ionisatie- en ontstekingselektrode aftrekken.
Demonteer de ventilator.
Brander demonteren en de onderdelen reinigen.
Fig. 52
46


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