ASAHI AV VALVES Installation, Operation and Maintenance Manual
Butterfly Valve Type 57, 56, 56D Electric Actuated Type S 18
Procedure (Actuator type: SRJ)
Nominal size: 40-250mm (1 1/2”-10”)
1) Turn the change lever in the direction of the arrow. (To the
Position A)
2) Turn the Manual handle while watching the valve travel
indicator.
Right turn (clock wise) Shut direction
Left turn (counter clock wise) Open direction
Procedure (Actuator type: LTRM, LTMD, LTRH)
Nominal size: 300-400mm (12”-16”)
1) Push the change lever toward the manual operating position.
In case that the position can not be changed smoothly, push the
change lever while turning the manual handle right or left.
2) Turn the manual handle while watching the valve travel
indicator.
Right turn (clock wise) Shut direction
Left turn (counter clock wise) Open direction
3) <Actuator type LTRM, LTMD>
Turn on the power source and set the external switch to “Open”
or “Shut”. (The change lever returns to the motor driven
operating position automatically.)
- Do not operate the change lever to the motor driven operating position (The actuator may be damaged.)
<Actuator type: LTRH>
Push the change lever back to the motor driven operating position.
Motor-Driven Operating Procedure
Procedure (Actuator type: SRJ)
Nominal size: 40-250mm (1 1/2”-10”)
- Do not leave the cover removed from the actuator.
(Coming into contact with a terminal in this state can give you an electric shock.)
1) Turn on the power source.
2) Set the external switch to “Open” or “Close”, and check to
ensure that the valve indicating direction and the operating
direction accord with each other.
3) Turn off the power source in the state of the full open or shut.
Actuator type: LTRM
Manual handle
Position A
Position B
Change lever
Actuator type: SRJ
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