Burkert 2030 Mode D'emploi page 13

Type 2030, 2031, 2032,
2033, 2037
7.5 Removing the actuator and
diaphragm from the valve body
7.5.1 Procedure for control function A
→
Pressurize lower pilot air port with compressed air (value as
indicated on the type label) (see „Fig. 2").
This is required to detach the diaphragm without damage from
the body.
→
Loosen fastening screws crosswise and remove actuator
together with diaphragm from the valve body.
7.5.2 Procedure for control functions B and I
→
Loosen fastening screws crosswise and remove actuator
together with diaphragm from the valve body.
7.6 Mounting the actuator and
diaphragm on the valve body
WARNING!
Risk of injury due to damaged device or malfunction.
The failure to observe the tightening torque can damage the
device or lead to malfunctions.
▶ Observe the tightening torque (see „Tab. 3: Tightening torques
for diaphragms").
Installation
7.6.1 Procedure for control function A
→
Pressurize lower pilot air port with compressed air (value as
indicated on the type label) (see „Fig. 2").
→
Place actuator together with diaphragm on the body.
→
Lightly cross-tighten the body screws until the diaphragm lies
between the body and actuator.
Do not tighten the screws yet.
→
Actuate the diaphragm valve twice to position the diaphragm
correctly.
→
Tighten body screws without pressurization in diagonal pairs in three
stages (approx. 1/3, approx. 2/3, 3/3 of the tightening torque),
according to table (see „Tab. 3"). The diaphragm should be posi-
tioned and pressed evenly all around the actuator and body.
7.6.2 Procedure for control functions B and I
→
Place actuator together with diaphragm on the body.
→
Lightly cross-tighten the body screws without pressurization until
the diaphragm lies between the body and actuator.
Do not tighten the screws yet.
→
Pressurize upper pilot air port with compressed air (value as indi-
cated on the type label).
→
Actuate the diaphragm valve twice to position the diaphragm
correctly.
→
Tighten body screws with pressurization in diagonal pairs in three
stages (approx. 1/3, approx. 2/3, 3/3 of the tightening torque),
according to Table (see „Tab. 3"). The diaphragm should be positioned
and pressed evenly all around the actuator and body.
english
13