8 - EA 2012, 2702, 2712
engli
sh
Disassembly
1)
The control cone lifts from the valve seat and is not damaged.
2)
Threaded nipple SW70
Type
2012
2702
2712
Actuator
mm
175, 225
80 - 125
175, 225
DN
mm
65 - 100
80 - 125
13 - 65
10 - 100
10 - 65
65 - 100
Control function
A
B, I
A
B, I
A
B
A
B
A
B
Remove the electrical and
pneumatic supplies from the
Top
Control
X
X
X
X
X
X
Remove pneumatic supply
and electrical connection if
pilot valve is attached
X
X
X
X
Pull off the pneumatic hose
between Top
Control
and
actuator at control port of
actuator
X
X
X
X
X
X
Pressurize the lower control
port of the actuator with
compressed air
1)
6 bar
6 bar
6 bar
6 bar
6 bar
Do not apply compressed air
X
X
X
X
X
Remove the actuator in the
open valve position by
unscrewing the threaded
nipple from the housing
X
X
X
2)
X
2)
X
X
X
X
X
2)
X
2)
Attention! Do not loosen
screw (SW65) above
threaded nipple!
X
X
X
X
Exchanging spare parts
40 - 125
Содержание 2012
Страница 39: ......
Страница 40: ...www burkert com ...
