10
7 VG9H 70 en
Apply grease (Molykote or equivalent) to the contact
surfaces of the actuator pin and the feedback 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 informa-
tion in Section 1.5.
Three extra M8 mounting holes exist in the standard
mounting face of the housing for additional support.
See dimension drawings for VG9300 in pages 42-43
(Chapter 12). The use of this extra support is manda-
tory in addition to the standard mounting face.
There are also two 6.5 mm holes for additional sup-
port when needed. See dimension drawings for
VG9300 in Chapter 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!
NOTE:
Special care must be taken that the shaft position has
been set according to marking in VG9000H housing and
the pointer in the shaft. Also make sure that the positioner
fail action parameter (PFA) is set correctly (Section 4.4.3).
NOTE:
These instructions are only for the mounting and installa-
tion of VG9300, i.e. stainless steel version of VG9000H.
Fig. 8
Shaft coupling alternatives
45°
45°
45°
45°
VG93
VG92
VDI/VDE 3845 mounting
IEC 60534 mounting
SHAFT ENDS
pointer
pointer
marks
on housing
marks
on housing
