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VSX4 and VSX8 Series
reed Switch
!
Do not use the manual button if there is no
plug. This action may damage the magnet
associated with the reed contact if trip the
VSX8 Series.
An optional remote notification switch can be installed
offering the capability to remotely notify the operator should
VSX8 Series shut off occur. Reed switch is available on our
regulators CSB604/704 Series only.
!
Do not pull, pinch or carry the VSX8 Series by
the cable of contact reed. Unsuitable handling
of cable can damage the reed contact.
Description and recommendations
This electrical contact is a limit switch contact based on the
reed contact principle. The actuation takes place through a
permanent magnet. The operation of the electrical contact may
be affected by magnetic materials. Initial commissioning is done
in combination with a signal processing control device. The
operator must check the electrical data for the VSX8 Series
tripping. The reed contacts must be installed in such a way as to
be protected against mechanical hazards as well as prolonged
exposure to sunlight. Specific instructions are available in the
supplier's instruction manual.
installation
The contact reed option is available on VSX8 Series mounted in
our factory for a CSB604 and CSB704 Series only. It cannot be
supplied alone for later installation on VSX8 Series on the field.
!
The usage of an assembly incorporating
an electrical accessory in an explosive
atmosphere the release relay VSX8 Series
equipped with an electrical accessory (proxy,
microswitch) is:
– is classified "assembly" in conformity
with the aTEX Directive 2014/34/EU (ref
CEn/SFg-i guidance sheet -February 2015)
– can be installed in any type of classified
zones according to the Directive 1999/92/EC
dated 16 December 1999, according to the
following conditions:
a)
the equipment(s) is connected to a
suitable and certified intrinsically safe
apparatus/electric circuit (zener barrier)
additional electrical data for intrinsic safety
protection use: the encapsulated protection
mode as a single electric device is compatible
with use "ia'' within following conditions:
P
max: 3W/VA
i
U
max: 30V AC/DC
i
I
max: 200 mA
i
C = 0.1 nF/m
L = 500 μH/m
8
Warning
Warning
Warning
b)
the equipment is used according to
the appropiate instruction manual
issued by the manufactuer and/or
available on our website
c)
when the equipment is used in a natural
gas pressure reducing and/or metering
station in compliance with the following
European standards: En 12186,
En 12279 and En 1776.
Startup and Shutdown
This instruction Manual should be used in
conjunction with the instruction manual of
the associated equipment.
Commissioning
!
all interventions on the equipment should
only be performed by competent and
trained personnel.
Controller Spring adjustment
!
Before proceeding with the adjustment of
the controller springs, the operator must
ensure upstream and downstream valves are
closed and adjusting screws (keys 43 and 40,
Figure 15) are unscrewed (refer to Table 6).
Overpressure and Underpressure Shutoff
(OPSO/UPSO) Setpoint adjustment
(Figures 4 and 15)
• Using a flathead screwdriver or 1/4 in. drive socket, turn
the OPSO adjusting screw (key 43) clockwise until it
stops turning.
• Apply nominal outlet pressure of the associated regulator
to the downstream system. Refer to Figure 6.
• Reset the controller per the resetting procedure
(refer to the Resetting Procedure section for detailed
resetting instructions).
• Slowly decrease the downstream pressure to the desired
UPSO value (P
).
dsu
• With a screwdriver or 1/4 in. drive socket, turn the UPSO
adjusting screw clockwise (key 40) until the controller trips.
• Apply nominal outlet pressure of the associated regulator
to the downstream system.
• Reset the controller by pulling the reset button (key 30)
until the mechanism is latched.
• Slowly increase the downstream pressure to the desired
OPSO shutoff value (P
• With a screwdriver or 1/4 in. drive socket, turn the OPSO
adjusting screw counterclockwise (key 43) until the
controller trips.
CaUTiOn
Warning
Warning
).
dso
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