Burkert 2030 Manuel D'utilisation page 26

Procedure for control function A
→
Pressurize lower control air connection with compressed air
(value as indicated on the type label) (see "Fig. 29: Control air
connection").
→
Place actuator on the body.
→
Lightly cross-tighten the body screws until the diaphragm is
between the body and actuator.
Do not tighten the screws yet.
→
Actuate the diaphragm valve twice to position the diaphragm
correctly.
→
Without applying pressure, tighten the body screws to the per-
mitted tightening torque (see "Tab. 9: Tightening torques for
diaphragms").
→
Pressurize lower control air connection with compressed air (value
as indicated on the type label).
→
Check the tightening torque of the screws again.
Procedure for actuator with control functions B and I:
→
Place actuator on the body.
→
Lightly cross-tighten the body screws without pressurization until
the diaphragm is between the body and actuator.
Do not tighten the screws yet.
→
Pressurize upper control air connection with compressed air (value
as indicated on the type label) (see below "Fig. 29: Control air
connection").
→
Actuate the diaphragm valve twice.
26
english
Type 2 030, 2031, 2031 K, 2032,
Installation
→
Tighten the body screws to the permitted tightening torque (see
"Tab. 9: Tightening torques for diaphragms").
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for CFA and CFI)
Fig. 29: Control air connection
Orifice Tightening torques for diaphragms [Nm]
(Diaphragm size)
EPDM / FKM
[mm]
8 2
15 3.5
20 4
25 5
32 6
40 8
50 12
65 20
Tab. 9: Tightening torques for diaphragms
2033, 2037
PTFE / advanced PTFE /
laminated advanced PTFE
2.5
4
4.5
6
8
10
15
30