Burkert Type 2051 Manuel D'utilisation page 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.
Unscrew cover screws in the sequence:
1
3
2
4
Fig. 9: Installation of the covers
Type 2051
2 1
5 6
4
3
7
1
2
6
5
4
3
8
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
19