Azbil Corporation
Model: AMT, HDT - CV3000 Series Control Valves
48
8.
INSTRUCTIONS FOR SIDE HANDWHEEL OF ACTUATOR
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.
8.1 Installation Procedure
To install the side handwheel, refer to Fig. 8-1 and proceed as follows:
(1) Prepare a manual operation kit (a side handwheel set and its mounting
accessories).
To install the handwheel, no machining or other physical processing on the
actuator is necessary.
(2) By turning the handwheel, set the pointer of the operation nut at the AUTO
position.
(3) Loosen the bolt (item number 6 as-show in Fig. 8-1) and widen the distance
between levers.
(4) Install the handwheel on the mounting pad at the back of the actuator, with the
mounting-bolts.
(5) Engage the holes at the end of two levers to the pointer boss and engage those of
the other ends to the boss of the operation nut, and then tighten the bolt.
(6) When the control valve is in the automatic mode of operation, set the pointer of
the operation nut at the AUTO position and keep the handwheel locked.
8.2 Operating Instructions
(1) To manually operate the actuator, remove the handwheel lock (the fork-shaped
component) which locks the handwheel and turn the handwheel in the direction
indicated by the corresponding arrowhead mark.
(2) To return to the automatic operation, turn the handwheel so that the pointer of
the operation nut is set at the AUTO position and then apply the handwheel lock.
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 PSA1: 80N {8kgf}
Model HA2: 190N {l9kgf}
Model HA3: 290N {29kgf}
Model HA4: 460N {46kgf}
(at the outermost periphery of the handwheel)
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