Burkert Type 2731 - Manual (Page 19)

7.5 pneumatic connection
DaNger!
danger – high pressure in the equipment!
▶ Before loosening the lines and valves, turn off the pressure and
vent the lines.
WarNiNg!
risk of injury from unsuitable connection hoses!
Hoses which cannot withstand the pressure and temperature
range may result in hazardous situations.
▶ Use only hoses which are authorised for the indicated pressure
and temperature range.
▶ Observe the data sheet specifications from the hose manufacturers.
The operation of the diaphragm control valve Type 2730 / 2731
is possible only in combination with an control unit.
Possible control units are:
Positioner Type 8630, 8635, 8692, 8694, 8792
Process controller Type 8693, 8793
Observe the type label!
The pneumatic connection of the control unit is described in
the respective operating instructions for the control unit.
7.5.1 connection of the actuator
control functions a:
→
Connect the control medium to the lower pilot air port of the
actuator (see “Fig. 15: Pneumatic connection”)
control functions B:
→
Connect the control medium to the upper pilot air port of the
actuator (see “Fig. 15: Pneumatic connection”)
Silencer
For reducing the exhaust air noise: plug the silencer into the free air
discharge connection (see “Fig. 15: Pneumatic connection”)
If used in an aggressive environment, we recommend
conveying all free pneumatic connections into a neutral
atmosphere with the aid of a pneumatic hose.
Lower pilot air port
Upper pilot air port
Fig. 15: Pneumatic connection
control air hose:
Control air hoses of sizes 6/4 mm or 1/4“ can be used.
19
Installation
english
Type 2730 / 2731 DN 65-100