Translation of the original operating instructions
Type 327
© 1994 - 2022 SED Flow Control
65
BA220002 Version:
a
Vo
rl
ag
e
: d
o
k360 (
c)
Media leakage at pipe
connection
Defect sealing / sealing material
Change sealing / sealing material
Improper installation
Install valve body proper
Threaded ends loose
Re-tighten connection
Media leakage at valve body
Defect valve body
Change valve body
Control media leakage at
leakage control hole
Defect stem sealing
Change actuator, see chapter 5.3.ff and
check control media for pollution
Control media leakage at
control air connection „open“
(for NC valves) or respectively
Defect control diaphragm or
piston lip seal
Change actuator, see chapter 5.3.ff
No switching
Valve does not switch / makes
too little stroke
Check control pressure
Wiring
Correct wiring