2 BO 70 en
9
4
DETACHING AND MOUNTING THE
ACTUATOR
4.1
General
The actuator mounting is in accordance with DIN/ISO 5211.
All actuators based on this standard can be easily mounted
on the valve. Typical installations are for pneumatic- and
hydraulic actuators with valve controllers for control, ESD or
on/off use or with electric actuator or manual gear.
4.2
Mounting preperation
The actuator used is normally on customer request. For safe
mounting on site, you need a hoist and lifting ropes.
4.3
Mounting
To mount the actuator, proceed in the following order:
□
Turn the valve to the closed position before mounting
the actuator.
□
Position the indexing shaft of the actuator on the valve
shaft carefully. Bear in mind that the actuator must be
mounted exactly and flush to the bracket, so that no
stress is caused to the valve shaft.
□
Make sure that the jag on the indexing shaft conforms
to the position of the disk (see Figure 12).
□
Fix the actuator with the appropriate screws and lock
them crosswise. Finally, check the closed position of the
valve by means of multiple depth measurements. The
detected data must not deviate more than 0.3 mm (see
Figure 11).
□
Finally, connect the energy supply.
Figure 11
Checking the closed position by means of depth
measurement
Figure 12
The markings on the actuator conform to the
position of the disk
4.4
Detaching preperation
If the actuator is mounted in a pipeline, the following condi-
tions must be ensured before starting to detach the actua-
tor:
□
Make sure that detaching the actuator will not cause
any fault.
□
Check carefully if a hot medium has been sent through
the pipeline and if the actuator has cooled down suffi-
ciently, so no danger exists due to extreme temperature.
□
Make sure that the medium finally sent through the
valve does not cause any danger for the service techni-
cian.
If you do not execute the dismantling yourself, you must
alert the qualified personal.
4.5
Detaching
To detach the actuator, proceed in the following order:
□
Make sure that the pipeline is pressureless and the men-
tioned valve is undocked from the process.
□
Make sure the valve is in a defined position (normally
closed).
□
Switch off the energy supply of the actuator.
□
Support the actuator with lifting ropes.
□
Unbolt the screws between the bracket and the actua-
tor. Pull the actuator carefully, vertical from the valve
shaft.
□
Lift and transport the actuator carefully to protect it
from damage.
Make sure that the energy supply of the actuator is safely
switched off before starting to detach the actuator.
5
TOOLS
□
No special tools are needed for servicing the valve.
6
ORDERING SPARE PARTS
When ordering spare parts, always include the following
information:
□
Unique number of the valve (on the type plate – see Fig.
3 and additionally stamped on the valve body)
□
Name of plant, date of start-up
□
Type code (on the type plate – see Fig. 3) with informa-
tion about size and pressure
□
If possible, a picture of the type plate
□
Number of the parts list, part number, name of the part
and quantity required
CAUTION:
When handling the valve or the valve package, bear in
mind its weight!
The actuator cannot be removed from the valve when
the pipeline is under pressure as a result of dynamic
torque!
NOTE:
Before dismantling, carefully observe the position of the
valve with respect to the actuator and positioner/limit
switch to ensure that the package can be properly reas-
sembled.
The actuator must be mounted to be easily accessible,
particularly for a possible emergency manual override.
CAUTION:
When handling the actuator, bear in mind its weight!
Marking
