Burkert Type 2000 - Manual (Page 18)

18
Repairs
11.1.3. Installing actuator on valve housing
WARNING!
Risk of injury from unintentional activation of the system and
uncontrolled restart!
• Secure system from unintentional activation.
• Following assembly, ensure a controlled restart.
DANGER!
Risk of explosion if incorrect lubricants used!
Unsuitable lubricant may contaminate the medium. In oxygen appli-
cations there is a risk of explosion.
• In specific applications, e.g. oxygen or analysis applications, use
appropriately authorized lubricants only.
→
Grease pipe thread before re-installing the actuator
(e.g. with Klüber paste UH1 96-402 from Klüber).
→
Check graphite seal and, if required, replace.
Graphite seal
Fig. 8: Graphite seal
→
For control function A: Pressurize control air connection with
compressed air (5.5 bar) so that the pendulum disc is lifted off the
valve seat and is not damaged when screwed in.
WARNING!
Risk of injury from damaged devices!
If the wrong tools are used for assembly work, the device may be
damaged.
• To remove the actuator from the valve housing, use an open-end
wrench, never a pipe wrench.
If the tightening torque is too great, the spindle thread may be
damaged.
• Observe tightening torque (40 ± 3 Nm)
→
Screw actuator into the valve housing.
Observe tightening torque (40 ± 3 Nm)!
If the position of the control air connection for installation
of the hose is unfavorable, it can be aligned steplessly by
rotating the actuator through 360°.
english
Type 2000 INOX