Burkert Type 2051 - Manual (Page 19)

19
Maintenance, Troubleshooting
removing the covers (pos. 30):
Warning!
risk of injury when removing the covers!
When removing a single-acting actuator, loosen the cover screws
alternately. If force is still applied to the covers when the screws have
been undone, this may indicate that a spring cartridge is damaged or
that the pistons have moved all the way in. Continued removal of the
covers may result in serious injuries to the maintenance personnel.
Stop removal immediately. •
Send actuator back to the supplier. •
2
4
3
1
2
3 4
5
1
6
2
3
4
5
1
6
7
8
Unscrew cover screws in the sequence:
Fig. 9: Installation of the covers
Removing covers from the single-acting actuator (remove one cover
after another):
Unscrew the cover screws (Pos. 13) until the covers are no longer
→
under spring force,
Unscrew the screws completely,
→
Remove covers and the springs.
→
Removing covers from the double-acting actuator (remove one cover
after another):
Unscrew the cover screws until the screws are completely
→
unscrewed and the covers are loose,
Remove the O-rings using a screwdriver,
→
Dispose of sealing rings (if these are being replaced).
→
english
Type 2051