Metso ND9200F, Инструкция по установке, обслуживанию и эксплуатации

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8 7 ND92F 70 en
4.4 Mounting on linear actuator of
nelesCV Globe
See figure in Section 12.7
❑
Attach the J-shaped feedback lever (47) to the
valve controller shaft. Apply the thread-locking
compound to the screws and tighten firmly.
❑
Remove the protective plastic plugs from pneu-
matic connections C2, S and C1. Mount the
metal plugs (53) to the unused controller con-
nections with sealant.
❑
Leave metal plug (54) in the connection C1 at the bot-
tom of the controller. Remove the metal plug (54) from
the C2 connection at the bottom. Mount the O-rings
(38, 2 pcs.) to the connections.
❑
Attach the mounting plate (64) to the valve con-
troller with screws (65).
❑
Mount the O-rings (38, 2 pcs.) and attach the
mounting plate (39) to the valve controller with
screws (28).
❑
Mount the conical plug (16) to the lever and select
the position on the scale according to the valve
stroke.
❑
Install the O-ring (31) to the actuator. Place the con-
ical plug into the frame on the stem and tighten the
screws (4).
4.5 Mounting on linear actuator with IEC
60534 mounting face
See figure in Section 12.8
❑
Attach the feedback arm with spacer to the valve
controller shaft. Note the position of the pointer
on the shaft as in 12.8. Apply thread locking
compound to the screws and tighten firmly.
Attach the spring to the feedback arm as shown
in Section 12.8.
❑
Mount the valve controller mounting bracket
loosely to the yoke of the actuator.
❑
Remove the protective plastic plugs from pneu-
matic connections C2, S and C1. Leave the metal
plugs (54) in the unused connections at the bot-
tom of the controller. Single acting actuators:
install a metal plug (53) with sealant to the C1
connection.
❑
Mount the valve controller loosely to the mount-
ing bracket guiding the pin on the actuator stem
to the slot of the feedback arm.
❑
Align the bracket and the valve controller with the
actuator stem and adjust their position so that the
feedback arm is approximately at a 90° angle to
the actuator stem (in the mid-stroke position).
❑
Tighten the valve controller mounting bracket
screws.
❑
Adjust the distance of the valve controller to the
pin on the actuator stem so that the pin stays in
the lever slot at full stroke. Ensure also that the
maximum angle of the lever does not exceed 45°
in either direction. Maximum allowed travel of the
lever is shown in Section 12.8. Best control per-
formance is achieved when the feedback lever
utilises the maximum allowed angle (±45° from
horizontal position). The whole range should be
at least 45°.
❑
Make sure that the valve controller is in right
angle and tighten all the mounting bolts.
❑
Ensure that the valve controller complies with
previous steps. Check that the actuator pin does
not touch the valve controller case throughout
the entire stroke of the actuator. If the actuator
pin is too long it may be cut to size.
❑
Apply grease (Molykote or equivalent) to the con-
tact surfaces of the actuator pin and the feed-
back arm to reduce wear.
Fig. 5 Shaft coupling alternatives
VDI/VDE 3845 mounting
20 15 30
nelesCV Globe mounting
EC/EJ flush mounting
pointer
mark on
housing
IEC 60534 mounting
45°
pointer
mark on
housing
45°
pointer
mark on
housing
45°
pointer
mark on
housing
45°
shaft end
shaft end
shaft end
shaft end