Installation - Burkert 2730 Manuel D'utilisation

7.3.

installation

Warning!
risk of injury from improper installation!
Non-observance of the tightening torque is dangerous as the
device may be damaged.
• Observe the tightening torque (see "Tab. 11: Tightening torques
for diaphragms").
7.3.1. installation of the valve body
Welded bodies
→
Weld valve body in pipeline system.
Other body versions
→
Connect body to pipeline.
7.3.2. installation of the actuator (welded
body)
installation for actuator with control function a:
noTiCe!
damage to the diaphragm or the seat contour!
• When installing the actuator, ensure that the valve is in open
position.
→
Control function A pressurize the lower pilot air port with com-
pressed air (5 bar): valve opens.
22
english
Type 2730 / 2731 / 2731K
Installation
→
Lightly cross-tighten the body screws until the diaphragm is
between the body and actuator.
do not tighten the screws yet.
→
Actuate the diaphragm control valve twice.
→
Without pressurization tighten the body screws to the permitted
tightening torque (see following table "Tab. 11: Tightening torques
for diaphragms").
installation for actuator with control functions B:
→
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 pilot air port of the actuator with compressed
air (5 bar).
→
Actuate the diaphragm control valve twice.
→
With pressurization tighten the body screws to the permitted tight-
ening torque (see "Tab. 11: Tightening torques for diaphragms").
Upper pilot air port
Lower pilot air port
Fig. 18: Pilot air port