Preliminary remarks
1. Note the serial number for future reference.
2. The positioner is fitted with a powerful magnet: do
not bring close to it a watch or an instrument likely to
deviate under the influence of a magnetic field.
Introduction
This version of the Positioner can be manufactured to
meet the requirements of each standard pertaining to:
— protection against explosion for equipment intended
to be installed in an hazardous atmosphere;
— protection against dust and against water-splash for
tight equipment;
— sometimes a combination of the two preceding
protections.
The instructions pertaining to these standards as well as
to electric characteristics of the positioner are further
explained in a supplementary Instruction sheet No ES
50004-000 E.
Caution
This equipment should not be installed, kept up or put
into operation without having read and fully understood
before-hand the instructions contained in this
instruction sheet and in the supplementary sheet
NoES50004-000E
Moreover, before initiating any operation on this
positioner the following should be read:
a) operating instructions pertaining particularly to
installation.
b) safety rules listed on the instruction plate attached to
the cover of the device in certain cases (positioners
with explosion-proof housing).
Non-compliance with these rules may bring about faulty
operation of the device, interfere with the installation or
damage it seriously. In addition, such negligence might
expose operating personnel present on the site to grave
hazards.
After Sales Department
Masoneilan has a highly skilled After Sales Department
available for start-up maintenance and repair of our
valves and components parts. Contact the nearest
Masoneilan Sales Office or representative or directly the
After Sales Department of Condé-sur-Noireau Plant.
Any future orders for spare parts should be addressed to
the Spare-Parts Department of our factory at
Condé-sur-Noireau. When such an order is placed you
should always cite in reference the original order and, in
particular, the type and the serial number of the
positioners involved.
Training
MASONEILAN regularly holds training seminars for
technicians in its factory of Condé-sur-Noireau. In order
to attend one of these training seminars you should get
in touch with our local Masoneilan representative or our
Training Department.
In all instances the operator should therefore be in
possession of the supplementary Instruction
sheet No ES 50004-000 E in addition to this
instruction sheet.
These instructions apply to installation,
adjustments, calibration and eventual repair of
8013 Series Positioners with cam, mounted on
35002 Series CamflexII and 30000 Series Varimax
2
General
The positioner is an electropneumatic force-balance
device which provides an accurate means of obtaining
at any time a valve stem position corresponding to a
theoretical position envisaged for a DC input signal. In
addition, the positioner provides a convenient means of
split-ranging operation for several valves (usually two)
from a single signal emitted by a single controller. The
positioner may have either direct or reverse action on
either direct or reverse actuators.
The feedback device of this positioner is fitted with one
single cam with several lobes permitting the valve to
present the following characteristics: linear, split-ranging
linear, equal percentage. The cam is directly mounted
on the end of the valve shaft (CAMFLEXII) or on the
pivot of actuator case (Varimax); thus avoiding the
drawbacks inherent in the connecting linkage.
description and operation
Figure 1–Diagram of Operation
(Example on Camflex II)
OUTPUT
AIR
SUPPLY
RELAY
NOZZLE
FLAPPERBEAM
BIASING SPRING
PIVOT
COIL
MAGNET
CAM
CAM FOLLOWER
BEARING
FORCE BALANCE
SPRING
RELEASE
SPRING