Azbil Corporation
Model: AMT, HDT - CV3000 Series Control Valves
41
7.2 Model HA2, HA3, or HA4 Actuator
7.2.1 Operating Instructions
To manually operate the actuator, refer to 'Fig. 7-5 through Fig. 7-8 and proceed as
follows:
(1) First, loosen the lock nut (which has a bar-shape handle and which locks
the handwheel, and turn the handwheel in the direction indicated by the
corresponding arrowhead mark.
As you turn the handwheel clockwise, the actuator stem moves downward
regardless of whether the actuator is of the direct action type or reverse action
type. The handwheel bears the “SHUT’ mark to indicate that the valve is closed
as the handwheel is tuned clockwise and the ‘’OPEN’ mark to indicate that the
valve is made open as the handwheel is tuned counterclockwise.
(2) For automatic operation of the actuator, fully raise the handwheel if the actuator
is of the direct action type or fully lower the handwheel if the actuator is of the
reverse action type, and then tighten the lock nut to secure the handwheel in such
position.
Precautions: If you forcefully turn the handwheel after it has reached the mechanical
stop position, the valve stem may be damaged. Do not turn the
handwheel with forces larger than the below-mentioned limits.
Model HA2: 190N {19kgf}
Model HA3: 260N {26 kgf}
Model HA4: 410N {41 kgf}
(at the outermost periphery of the handwheel)
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