Different brewing groups at Jura

Hello,
mir some Jura's and Krups machines have passed through my hands lately.
I noticed that some of them use different brewing groups.

Once in a while some of them use round and long sledges at the back and on some of them they are square and angled.
Other on they look pretty identical.

My question would be: Are they completely compatible to each other and where were they originally used?

Hello,

various newer Jura devices have less space behind the BG
than the old ones and therefore the
newer one must be installed here with the short powder wiper
. (e.g. ENA or Z5)
Otherwise the BGs are compatible - i.e. the short ones
fit where the long ones are installed and the long ones
fit everywhere where there is enough
space behind the BG.

greeting
BS

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Ich schaue hier nur noch ganz selten vorbei.
In verschiedenen anderen Foren bin ich mit
dem gleichen Nickname zu finden, falls mal
jemand Hilfe benötigt kann ich vielleicht dort
helfen.

Look at the brewing group. Versions V1, V2 and V3 are available.

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KVA:WMF 800 ST: Lelit Bianca PL 162