Burkert Type 2000 Manuel D'utilisation page 14

Type 2000/2002
Structure and Function
Control function d (Cfd)
In rest position pressure connection 3
connected to working connection 2,
d
relief 1 closed.
Control function e (Cfe)
Mixing valve
In rest position pressure connection 3
e
connected to working connection 2,
pressure connection 1 closed.
Control function f (Cff)
Distribution valve
In rest position pressure connection 2
f
connected to working connection 3,
working connection 1 closed.
6.2.3. incoming flow under seat
Depending on the version, the valve is closed against the medium
flow by spring force (control function A, CFA) or by control pressure
(control function B CFB).
As the medium pressure is under the pendulum disk, this pressure
contributes to the opening of the valve.
Warning!
leaking seat if minimum control pressure is too low or
medium pressure too high!
If the minimum control pressure is too low for CFB and CFI or the
permitted medium pressure is exceeded, the seat may leak.
• Observe minimum control pressure.
• Do not exceed medium pressure.
• See Chapter 7.2.2. Pressure ranges.
CFA/CFI
Fig. 2: Incoming flow under seat (closing against medium)
english
CFB/CFI
13