Burkert Type 2301 - Manual (Page 27)

27
Installation
8.4 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 authorized for the indicated pressure
and temperature range.
▶ Observe the data sheet specifications from the hose manufacturers.
for control function i – danger if pilot pressure fails!
For control function I control and resetting occur pneumatically.
If the pressure fails, no defined position is reached.
▶ To ensure a controlled restart, first pressurize the device with
pilot pressure, then switch on the medium.
The pneumatic connection of the globe control valve can
be carried out only in connection with the appropriate
control unit.
Possible control units are:
Positioner Type 8692, 8694 and 8696
Process controller Type 8693
8.4.1 connection of the control medium
→
Connect the control medium to the pilot air port (1)
(3 – 7 bar; instrument air, free of oil, water and dust).
→
Fit the exhaust line or a silencer to the exhaust air port (3) and, if
available, to the exhaust air port (3.1).
If used in an aggressive environment, we recommend
conveying all free pneumatic connections into a neutral
atmosphere with the aid of a pneumatic hose.
Pilot air port
Exhaust air port
Additional exhaust air port only
with pilot-operated control
system for high air output from
(actuator size ø 130)
1
3
3.1
Fig. 15: Pneumatic connection
control air hose:
6/4 mm or 1/4" pilot air hoses can be used.
A pilot air port via G 1/8 thread is available as an option.
english
Type 2301