Burkert Type 2012 User Manual
Page 13
13
Installation
Type 2012
8.3.2 install actuator (welded body)
Graphite seal
Fig. 6: Graphite seal
→
Check the graphite seal and if required, replace it.
Warning!
danger if incorrect lubricants used!
Unsuitable lubricant may contaminate the medium. In oxygen applica-
tions there is a risk of an explosion!
▶ In specific applications, e.g. oxygen or analysis applications,
use appropriately authorised lubricants only.
→
Grease nipple thread before re-installing the actuator (e.g. with
Klüber paste UH1 96-402 from Klüber).
note!
damage to the seat seal or the seat contour!
▶ When installing the actuator, ensure that the valve is in open
position.
→
Control function A: pressurize lower control air connection with
compressed air (6 bar).
→
Screw actuator into the valve body.
tightening torques of valve body / nipples
nominal diameter
65
80
100
tightening torques
100 ± 5
120 ± 5
150 ± 5
Tab. 1: Tightening torques of valve body / nipples
8.3.3 rotating the actuator
The position of the connections can be aligned steplessly by rotating
the actuator through 360°.
note!
damage to the seat seal or the seat contour!
▶ When rotating the actuator, ensure that the valve is in open
position.
procedure:
→
Clamp the valve body in a holding device
(applies only to valves which have not yet been installed).
→
Control function A: pressurize the lower control air connection
with compressed air (6 bar): valve opens.
→
Counter on the flats of the nipple with a suitable open-end wrench.
Warning!
risk of injury from discharge of medium and pressure!
If the direction of rotation is wrong, the body interface may become
detached.
▶ Rotate the actuator module in the specified direction only.
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