Burkert Type 2301 - Manual (Page 41)

41
Maintenance, cleaning
install the actuator (with control unit) on the valve body
→
Check the graphite seal and if required, replace it.
Warning!
danger if incorrect lubricants used!
Unsuitable lubricant may contaminate the medium. In oxygen
applications 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:
Without unit control: pressurize the pilot air port 1 with com-
pressed air (5 bar): valve opens.
With unit control: open the valve according to the operating
instructions for the control unit.
→
Screw actuator into the valve body.
Observe tightening torque (see “Tab. 15”).
1
2
Pilot air port
Fig. 31: Connections
tightening torques of valve body / nipples
dn
tightening torques [nm]
10/15 45 ±3
20 50 ±3
25 60 ±3
32
65 ±3
40
50
70 ±3
65 100 ±3
80 120 ±5
100 150 ±5
Tab. 15: Tightening torques of valve body / nipples
If the position of the pilot air ports for installation of the
hoses is unfavorable, these can be aligned steplessly by
rotating the actuator through 360°.
The procedure is described in the chapter entitled “8.3.4
Rotating the actuator”.
english
Type 2301