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OMAL S.p.A.
Headquarters
: Via Ponte Nuovo, 11 - 25050 Rodengo Saiano (BS) Italy •
Production Site:
Via Brognolo, 12 - 25050 Passirano (BS) Italy
Ph.
+39 030 8900145 •
Fax
+39 030 8900423 • [email protected] •
www.omal.it
Rif. UMA800081A - 02/18
INSTALLATION, USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATOR “DA08”
IT
EN
- Before mounting the actuator on the valve, make sure that the rotation of one is in line with the rotation
of the other, and that the position of the shaft slit is correct.
- Before installing the actuated valve, carry out a few cycles in order to check the proper fitting between
valve and actuator.
- Carry out the installation in compliance with the national local regulations and laws.
- Before installing a pneumatic actuator bearing the marking in accordance with Directive 2014/34/EU
ATEX, read the additional instructions for the use in explosive atmospheres, supplied together with the
product.
5) INSTALLATION INSTRUCTIONS
The installation of an actuator allows to open and close a valve, which is installed in a system, without ma-
nual operation, by means of an electric-pneumatic remote control.
The normal sizing of the actuators requires to consider an appropriate safety margin for the breakaway
torque which is necessary for the valve to operate properly. The plant project, physical or chemical cha-
racteristics of the fluids, special environmental conditions, may require an increase of the safety factor to
be applied to the sizing.
Prior to installation verify that valve and actuator comply with the safety standards described above. Utmost
cleanliness is required when connecting the air supply to the actuator. All parts of the plant, reductions,
joints, plates, brackets and equipment must be thoroughly cleaned. Before mounting the actuator on the
valve be sure that both elements are correctly oriented, depending on the needed rotation direction.
- Before installation, visually check that the conditions of the actuator are good, since it’s been transported
and stored.
- Verify, through the shaft slot or covers, the position of the actuator.
- Carefully read the OMAL S.p.A. instructions contained in the cardboard box.
- Verify performance and limits found on the actuator body to see whether if it’s suitable for the application
or not.
- Remove the plastic protective covers from the ports and insert whichever filters as pointed out in para-
graph 2.
- Prior to mounting the actuator on the valve, clean both from dust and dirt.
- Verify the valve position, closed or open, and the rotation direction.
Assembly Valve/Actuator:
A) Direct installation
The direct installation of valve and actuator is the best way in order to avoid backlash between the valve
stem and the actuator shaft. For direct installation, there should be the same standard flange connection
both on the valve and on the actuator, and the dimensions of the valve stem should fit perfectly with tho-
se of the actuator shaft. Before installation, please check that the actuator and the valve have ISO flanges
of the same size, also check that the dimensions of the valve stem and its shape are suitable for direct
mounting: use a reduction if necessary.
Mount the valve stem in the housing on the actuator shaft and bolt the two ISO flanges together.
B) Installation with connection plate.
In the case where a direct installation is not possible, due to small differences between the actuator and
Summary of Contents for DA08
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