Metso Finetrol, Инструкция по установке, обслуживанию и эксплуатации

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5 FT 70 en 17
ing halves, and the ANSI keyway is located in the
middle of the half bushing. Fig. 26 shows the keyway
position when the actuator is in a closed position.

The open or closed positions of the actuator can be
identified either by using compressed air, see Fig. 27,
or by checking the position of the pointer at the end
of the drive shaft. The actuator is closed if the direc-
tion of the slot in the coupling plate is transverse to
the direction of the actuator's main line.

The actuator is either mounted directly on the valve,
or is attached to the valve bracket with four screws.
The tightening screw of the bushing should be loos-
ened before mounting, to allow the shaft to fit easily
into the actuator.

The actuator construction allows axial movement of
the drive shaft to compensate the valve shaft move-
ment due to e.g. thermal expansion. Check, before
the screw is tightened, that the drive shaft is in the
upper position of its axial movement, which is its
normal position (the mounting position shown in
Fig. 25). Checking is important, as the actuator shaft
drops down slightly when the screw is tightened.
The drive shaft axial movement can be observed and
measured before attachment to a valve. The actuator
drive shaft is in the upper position when its upper
surface conforms to Table 7 (see Fig. 25).

The drive shaft will automatically find its correct
position if the installation tool H061904 (see Fig. 25)
is used. The installation tool is attached instead of
the coupling plate using M4 screws with the drive
shaft in lower position (before the valve is installed).
Tighten the nut of the tool in such a way that the
tool pulls the drive shaft to the uppermost position.
The position may be checked from the side of the
tool.

Install the actuator on the valve and attach the valve
mounting screws loosely by hand. Then tighten the
tightening screw (I) according to Table 7. The
required torque is also marked on a plate close to the
drive shaft on the actuator housing. The installation
tool is removed, and the coupling plate is reat-
tached. Finally, tighten the valve mounting screws.
Fig. 24 Cone bushing installation
Fig. 25 Tightening of the cone bushing
Fig. 26 Keyway positions on the actuator
Loctite 243
or similar
Key
X
Installation tool
H061904
ANSI keyways in the
middle of bushing
DIN keyways at
bushing split
ACTUATOR IN
CLOSED POSITION
Fig. 27 Actuator connections
Table 7 Mounting faces, tightening screws and drive shaft
clearances
Size Mount. Thread Key Nm ~X
upper pos.
(mm) ~X
lower pos.
(mm)
EC/EJ05
EC/EJ07
EC/EJ10
EC/EJ12
EC/EJ14 F05
F07
F10
F12
F14 M12
M16
M20
M24
M36 6
8
10
14
19 25
50
100
200
700 4,0
1,5
2,5
3,5
4,5 1
-2
-2
-2
-2
Adjustment screw
for closed position
Closing pressure
Opening
pressure
Adjustment screw
for open position