Burkert 2000 Mode D'emploi page 8

Work to be carried out before installation
Actuators D-50, E-63 and F-80
Interrupt supplies of control air and medium
Empty valve housing
Unscrew transparent cap from actuator cover
Screw out position indicator with Allan key (SW 5)
Actuators G-100, H-125
ATTENTION!
Interrupt supplies of control air and medium
Empty valve housing
Unscrew transparent cap from actuator cover
Screw out position indicator with Allan key (SW 8)
Screw off actuator cover with special wrench, counterbracing at the sleeve
Actuators K-175, L-225
Interrupt supply of medium
Empty valve housing
Bring actuator into the upper piston position
ATTENTION!
Unscrew transparent cap from actuator cover
Screw out position indicator (yellow screw cap) by hand
Screw threaded sleeve or spindle cap instead of the position indicator onto
the end of the spindle (SW 14)
Interrupt supply of control air
6 - 2000/2002/2012/2030/2031
A special wrench is required for assembly of the actuator
cover (see accessories).
Pressurize only the lower piston space above the lower
control air port with air (Control Functions A and I).