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Inbedrijfstelling
Wanneer het toestel ongeveer een week in bedrijf is geweest
en het display een druk lager dan 1,0 bar weergeeft moet de
installatie bijgevuld worden. Het dalen van de druk in een
cv-installatie wordt veroorzaakt door het ontsnappen van
luchtbellen via koppelingen en (automatische) ontluchters.
Ook zuurstof dat opgelost is in het verse cv-water, zal naar
verloop van tijd uit het cv-water trekken en ervoor zorgen dat
de druk in de cv-installatie daalt.
Als de cv-installatie echter vaak bijgevuld moet worden, dan is
er vermoedelijk sprake van waterverlies. In dit geval is het
belangrijk om de oorzaak zo snel mogelijk te verhelpen.
Afb. 7 Vul- en aftapkraan
16


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