9.2 Adjustment of Travel Limit(see picture14)
Move the electric actuator to the full-closed position by manual. And loosen locknut, turn cam (yellow open, red
close) until touch close limit switch (CLS) , then screw locknut. It’s the way to set the full-closed travel limit
position of electric actuator. Full-open position setting is the same way.
Picture 14
9.3 Adjustment of Potentiometer
Potentiometer, as output feedback signal , with 3 terminals, ② connect to
the slide arm of potentiometer. ①connect to the terminal whose resistance
decrease between the slide arm when actuator in opening movement.
③ connect to the terminal whose resistance decrease between the slide arm
when actuator when actuator in closing movement.
(Note: The potentiometer resistance should be not subzero
、
jump phenomenon.)
Turn valve to the full-open position by manual until limit switch move,
measure with a multimeter , adjust the resistance between ② and ① between 35 Ω ～ 60 Ω .If incorrect,
adjusting by turning the drive gear of potentiometer.
9.4 Adjustment of Over torque Protection Device
At nominal working pressure, adjust limit switch cam until touch switch contact roller. If actual torque to
drive valve over the rating torque, cam axle will rotate in clockwise/anticlockwise direction, and drive the cam to
process over torque movement.
9.5 Adjustment of Indicator Plate
Set valve to full-closed position, loosen screws on glass cover, turn the window glass to aline the indicator
direction mark with indicator hand. And then tight screws
(Note:the indicator plate has been set before leaving factory )
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