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Specifications subject to change without notice
Edition: August 2017
Maintenance EB 31a-01_EN
•
Mounting the end caps
(see Fig. 27, Fig. 28 and Fig. 29)
For actuator sizes 900 to 3000, the end caps ( 22 and 23 )
and spring cartridges ( 17 ) are symmetric (Figs. 27, 28
and 29).
◦ Bearing surface of the housing.
◦ For single-acting actuators, insert the correct number
of spring cartridges (according to table) into the end
caps (see Figs. 27 and 28).
◦ Fit gaskets ( 14 ) into the grooves of both end caps.
◦ Mount the end caps onto the housing ( 29 ), making
sure that the gaskets are seated properly in the
grooves.
◦ Tighten the screws ( 13 ) by hand. Tighten according
to the sequence indicated in Fig. 29.
•
Mounting the adjusting screws
(actuator versions manufactured
up to 2006
) (see Fig. 30)
◦ Insert adjusting screws ( 2 ), lock nuts ( 3 ), washers
( 4 ) and O-rings ( 11 ).
◦ Screw the adjusting screws ( 2 ) into the housing.
•
Mounting the adjusting screws
(actuator versions manufactured
from 2006
) (see Fig. 30)
◦
Both adjusting screws ( 2 ) must be screwed into the
housing before the pistons and end caps are
mounted because they can only be inserted from the
inside of the actuator.
◦
Insert the O-rings ( 11 ).
◦
Place the lock nuts ( 3 ) and washers ( 4 ) onto the
adjusting screws.
•
Adjusting the end position on the standard actuator
(in clockwise direction to close)
◦
0° (closed) end position adjustment for an actuator in
the closed position: turn the screw ( 2 ) on the right
(view from the top) either clockwise or
counterclockwise until the required position is
achieved.
To secure this position, tighten the lock nut ( 4 ).
◦
90° (open) end position adjustment for an actuator in
the open position: turn the screw ( 2 ) on the left
(view from the top) either clockwise or
counterclockwise until the required position is
achieved.
To secure this position, tighten the lock nut ( 4 ).
Fig. 27
Fig. 28
Fig. 29
Fig. 30
