Burkert 2300 - Page 11

11
Structure and function
Control function B (CFB)
Normallyopenbyspringaction.
Control function I (CFI)
Actuatingfunctionviareciprocal
pressurization.
6.2.2 Flow direction below the seat
Dependingontheversion,thevalveisclosedagainstthe
mediumowwithspringforce(controlfunctionA,CFA)orwith
pilotpressure(controlfunctionBorI,CFBorCFI).
Asthemediumpressureisunderthecontrolcone,thispressure
contributestotheopeningofthevalve.
WARNING!
Medium may be discharged if minimum pilot pressure is too
low or medium pressure too high!
IftheminimumpilotpressureistoolowforCFBandCFIorthe
permittedmediumpressureisexceeded,leaksmayoccur.
▶ Observeminimumpilotpressure.
▶ Donotexceedmediumpressure.
▶ Seechapterentitled“7.4.3Pressureranges”.
Rest
position
CFA
Rest
position
CFB/CFI
Fig. 2: Flow direction below the seat
(Rest open/closed, closing against medium)
english
Type 2300