
OSBBF20A-EN
12/14
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
HANDLING & STORAGE
HANDLING
Proper care in handling the valve should be taken to
prevent damage. Do not drop or throw it.
STORAGE
Store the valve in the protected area from dust,
moisture, and direct sunlight. If possible, valve should
be kept in the original packaging.
CHECKING
• Check the product code, power supply, and voltage
before installation.
• Confirm that there is no screw loose or part
deformation.
INSTALLATION
PRECAUTIONS
Before installing, clean pipe and valve ends.
Make sure they are free of dirt, dust and etc.
PIPING FLANGES
• V type has a flow direction. Install the valve
accordingly.
• Gasket should be selected appropriately to suit the
fluid, pressure and temperature.
Use spring washer to prevent from decreasing surface
pressure gasket when the temperature change
happens frequently.
• Tighten all bolts using crossover method to load the
joint evenly.
• In the L2 type, when the flow path is subjected to a
high pressure from arrow, it may leak slightly to the
low pressure port.
• The flow path of 4-seat valve occurs a very small
amount of leakage.
ENVIRONMENT
• Do not install in place where corrosive gas is present
or where vibration is heavy (0.5 G or more).
• When radiant heat causes the surface temperature of
the control unit to exceed 55 °C, provide an
appropriate shielding plate.
• If there is a possibility that the fluid and drive part
freeze, please take measures to prevent freezing.
POSITIONING
Should be positioned through 90° upward from
horizontal. Provide space around the product to allow
manual operation, inspection and replacement work.
Maintenance space for upper part of actuator.
AE (120 / 360 / 700) More than 105 mm
AE (02K / 06K) AD HD More than 120 mm
OTHER NOTES
Until the wiring is completed there must be no
condensation or flooding in the interior of the actuator,
after piping. Protective caps on the cable gland are
not waterproof.
TIGHTEN THE GLAND NUTS
• Check that there is no leakage from the gland
packing.
• If it leakage, tighten gland nuts by alternately.
Do not over-tighten the gland nuts.
Recommended torques [Nm]
Valve size [mm] Torque
BF L2 V T4 / L4
15 to 25 20 to 25 25 - 6
40 to 50 40 to 50 40 to 50 25 to 40 9
65 to 100 65 to 100 65 to 100 50 to 100 15
125 to 150 - 125 to 150 125 to 150 25
- - 200 - 30
WIRING
PRECAUTIONS
• Remove the actuator cover before wiring.
• Two G1/2 electrical connections are provided with a
cable gland and plug. Usable cable size is 6 to 12
mm.
• When using a flexible tube, dew condensation may
occur inside the actuator due to respiration from the
inside of the tube and malfunction may result. Seal the
flexible tube connector part with a sealant.
• Sealants that affect the electrical contacts should not
be used inside the electric actuator.
• If long distance wiring or low voltage operation, check
that terminal voltage is in the proper range.
CONNECTION
• Do not wiring outdoors on a rainy day.
• Check the power supply and voltage.
Connect the signal as shown in the wiring diagram.
Do not connect unnecessarily terminal.
• Actuator should be electrically grounded.
Use the terminal marked ( ) inside the actuator.
PREVENT DEW CONDENSATION
• When installing the cover after wiring, perform the bolt
by the temporary tightening procedure and the
permanent tightening procedure to tightly and
securely tighten the rubber packing so that water does
not enter from the outside.
• Tighten the cable gland nut so that there is no leakage
from the wire entrance.
Gland nut
Gland plate Stem