
7 VG9F 70 en 7
3.3 Mounting on linear actuator with IEC
60534 mounting face
See figure in Section 11.5
❑Attach the feedback arm with spacer to the con-
troller shaft. Note the position of the pointer on the
shaft as in 11.5. Apply thread locking compound
to the screws and tighten firmly. Attach the spring
to the feedback arm as shown in Section 11.5.
❑Mount the controller mounting bracket loosely to
the yoke of the actuator.
❑Remove all plastic plugs from all actuator connec-
tions (3 pcs.).
❑Mount the controller loosely to the mounting
bracket guiding the pin on the actuator stem to
the slot of the feedback arm.
❑Align the bracket and the controller with the actua-
tor stem and adjust their position so that the feed-
back arm is approximately at a 90° angle to the
actuator stem (in the mid-stroke position).
❑Tighten the controller mounting bracket screws.
❑Adjust the distance of the 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 11.5. Best control performance
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 controller is in right angle and
tighten all the mounting bolts.
❑Ensure that the controller complies with previous steps.
Check that the actuator pin does not touch the control-
ler 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.
3.4 Mounting and installation of VG9300
Mounting bracket
❑Make sure the mounting bracket is suitable for
the weight of the device. See detailed weight
information in Section 1.5.
❑Three extra M8 mounting holes exist in the stand-
ard mounting face of the housing for additional
support. See dimension drawings for VG9300 in
pages 40-41 (Section 12). The use of this extra
support is mandatory in addition to the standard
mounting face.
❑There are also two 6.5 mm holes for additional
support when needed. See dimension drawings
for VG9300 in pages 40-41 (Section 12).
Pipeline support
❑Due to the extra weight of stainless steel version
and/or possible heavy vibration, make sure there
are proper supports in the pipeline to hold the
weight of the valve assembly.
Spool valve protective cover
❑The spool valve protective cover (454) has 2 pcs.
of 1/2” NPT threaded openings.
❑Openings allow an adequate exhaust capacity
and breathing of the spool valve.
❑Openings have breathers (456) installed, but
they can be replaced with protective piping if
needed and when necessary.
❑If VG is installed vertically, it is recommended to
replace the breather with protective piping in the
opening pointing upwards.
Exhaust adapter
❑The exhaust adapter (8) has a 1/2” NPT threaded
opening.
❑Opening allows an excess air to be released from
the housing and to prevent overpressurization.
❑Exhaust adapter has a breather (456) installed,
but it can be replaced with protective piping if
needed and when necessary.
❑Opening in the exhaust adapter shall not be
plugged!
Protective piping
❑Piping of the spool valve cover and/or exhaust
adapter shall be done in cases where it is
assumed that water can go inside the spool valve
cover or into the exhaust adapter in spite of
breathers.
❑Piping shall be done so that the blowing of the
exhaust air is downwards and to prevent water to go
inside the protective cover or the exhaust adapter.
❑Minimum inside diameter of the piping is 13 mm.
❑Exhaust adapter piping shall not be connected
to the spool valve cover piping!
Fig. 3 Mounting on Metso actuator with VDI/VDE
mounting face
NOTE:
Special care must be taken that the shaft position has
been set according to marking in VG9000F housing
and the pointer in the shaft. Also make sure that the
positioner fail action parameter (PFA) is set correctly
(Section 4.4.3).
C2
S
C1
The pointer on the coupling must
stay in this sector
11
NOTE:
These instructions are only for the mounting and instal-
lation of VG9300, i.e. stainless steel version of VG9000F.