AB-7356-U
10
Heat insulation
Do not apply heat insulation to the actuator or to the yoke, as shows in Fig. 7. If the yoke and the actuator are covered with
insulation material, the pointer cannot be checked and may be distorted.
Factory preset position
The actuator shaft is positioned at 100% (Port A in fully open position) for shipment. The shaft is completely turned clockwise,
and the pointer points at “100”. (See Fig. 11.)
Figure 11. Pointer position for shipment
Manually opening/closing the ACTIVAL
IMPORTANT:
Manually opening/closing the ACTIVAL with the power (24 V AC) applied might damage the actuator.
To manually open/close the ACTIVAL, do not turn the joint beyond the fully open (100)/closed (0) mark.
To manually open/close the ACTIVAL, slowly turn the joint. If shock is sent to the actuator, the actuator might
get damaged.
Disconnect the power from the ACTIVAL before manually operating the ACTIVAL. As shown in Fig. 12, from the front of the
ACTIVAL, hold the joint using a tool such as a wrench, and turn the joint slowly toward the set position.
Figure 12. Manual open/close operation
Auxiliary switch (optional)
The auxiliary switch is installed on site. Refer to the instructions supplied with the auxiliary switch for installation.
IMPORTANT:
Do not open the top cover except when adjusting the auxiliary switch. Close the top cover instantly after
adjusting the auxiliary switch.
Do not put any load on the top cover.
Position indication
0: Port A fully closed (Ports B and AB fully open)
100: Port A fully open (Ports A and AB fully open)
Pointer
Hold the joint using a wrench
and turn slowly.