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9
11.Remove the assembly guide tool from the gland
bore and mount the shaft (4). See Sections 4.2.3,
4.3 and 4.4 for details of gland packing assembly.
Tighten the strain ring (9) according to Table 4.
4.7
Detaching and installing the actuator
4.7.1
Detaching from the valve
1. Detach the air supply tube from the actuator. Also detach
any cables preventing the removal of the actuator.
2. Detach the actuator from the bracket (5) by
unscrewing the fixing screws.
3. Pull the actuator off the shaft by using a special extrac-
tion tool, Figure 8. Prevent the shaft from pressing the
ceramic ball when removing, e.g. by gripping the shaft
with self-locking pliers (don’t damage the shaft) .
4.7.2
Installation onto the valve
Clean the shaft boring of the actuator. Lubricate the
shaft boring and the valve shaft with, for example,
Cortec® VCI 369 anticorrosive agent.
The installation position of the actuator is determined as
follows:
❑
The B1C-actuator is installed in such a way that
the piston is in the extreme outward position
when the valve is closed.
❑
The B1J/B1JA-actuator is installed in one of two
positions, depending on the function required
(spring opens/spring closes).
❑
The actuator mounted the valve before is
installed in the same position.
❑
Carefully insert the actuator over the valve shaft
and make sure the shaft does not press the
ceramic ball, use e.g. self-locking pliers (don’t
damage the shaft).
❑
Make sure that the actuator is straight in relation
to the valve.
❑
Insert and tighten the fixing screws.
❑
Check to see that the limiter screws of the open
and closed position are properly adjusted.
More information concerning the actuator is available in
the installation, operation and maintenance instructions
given for the model in question.
Table 8
Tightening torques of insert
Nominal size
DN
Thread
Max. torque
Nm *
Tool
25/20
M52 x 1,5
60
C279922
40/32
M70 x 2
120
C279921
50/40
M85 x 2
240
C279921
80/65
M115 x 2
440
C279920
100/80
M140 x 2
770
C279920
150/100
M200 x 3
1450
F05016
200
M250 x 3
2000
F33976
*) Graphite lubricant applied to the threads
NOTE:
Make a note of the mutual position of the valve and the
actuator. This will enable you to keep the operating direc-
tion unchanged during reassembly. Also make a note of
the position of the actuator (valve open/closed).
Fig. 8
Removal of the actuator with an extractor
NOTE:
Do not strike at the actuator during installation because
this might damage the ceramic parts.
NOTE:
The actuator has an arrow indicating the flow direction.
Make sure that this arrow is in the correct position in relation
to the bore.
NOTE:
The position of the ball is indicated by means of a groove at
the top of the shaft, which shows the direction of the bore.