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Inspectie en onderhoud | 51NL
6 720 802 124 (2012/03)
13.1.5 Vuldruk van de verwarmingsinstallatie instel-
len
B Staat de wijzer onder de 1 bar (in koude toestand)
dan moet u bijvullen totdat de wijzer weer tussen de
1 bar en 2 bar staat.
B Wanneer de druk niet wordt vastgehouden: expansie-
vat (extern) en cv-installatie op dichtheid controleren.
13.1.6 Elektrische bedrading controleren
B Elektrische bedrading controleren op mechanische
beschadigingen en defecte kabels vervangen.
13.1.7 Andere montagedelen reinigen
B Reinig de elektroden. Vervang de elektroden bij ern-
stige slijtageverschijnselen.
13.2 Aftappen van de ketel
Verwarmingscircuit
Voor het aftappen van de CV-installatie moet op het laag-
ste punt van de installatie een aftapkraan worden inge-
bouwd.
Voor het aftappen van de cv-ketel:
B Aftapkraan openen en verwarmingswater via de aan-
gesloten slang afvoeren
Afb. 58
OPMERKING: Het toestel kan beschadigd
raken!
Bij het bijvullen van cv-water kunnen span-
ningsscheuren in de hete warmtewisselaar
ontstaan.
B Vul cv-water alleen bij in een koud toe-
stel.
Aanduiding op manometer
1 bar Minimale vuldruk (bij koude installatie)
1 - 2 bar Optimale vuldruk
3 bar Maximale vuldruk bij hoogste tempera-
tuur van verwarmingswater:
mag niet worden overschreden (over-
stort opent).
Tabel 22
Voor het navullen de slang met water vullen.
Daardoor wordt voorkomen, dat lucht in het
CV-water terecht komt.
6 720 612 232-26.1O
51


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