10
provided as user required.
8. How to select priority control mode for valve
c
losing end position
Both stroke control and torque control can control valve closing. Take one as
priority control and the other as protective control. Select different priority control
mode for different types of valve. For wedge gate valve and cut-off valve etc, it is
recommended to take torque control as priority control and stroke control as
secondary protective control. While for general flat or parallel gate valve, it is
recommended to take stroke control as priority control and torque control as
secondary protective control.
9. Operation inspection after setting
After completion of setting, the electric actuators can not be used until they passed
the following inspections.
9.1 After valve is closed electrically to the position, the control mechanism can
normally cut off the power and ensure the sealing requirement of the valve. After the
valve is set to the fully open position, the power can be cut off precisely and reliably.
9.2 Position indication mechanism can properly show the operation condition of the
valve.
9.3 Manual switching mechanism should work reliably and electrical reset is flexible
and reliable. Before manual operation, push on the switch hand and rotate handwheel
until the switch hand is turned to the right place, which means manual/electrical
switch is finished. Rotate the handwheel if manual operation is needed. Under the
electrical mode, the switch hand will automatically turn to the electrical position.
Note: The switch hand is forbidden to turn from manual operation position
to electrically operation position in case of damaging the actuator.
10.
Notes for use
10.1 Don’t hit the openness window glass and glass crack is forbidden.
10.2 Keep the nameplate and warning plate being fixed on actuator and the words on
them should be recognized.
10.3 Don’t open the electric box cover outdoors in rainy day or windy day.
10.4 Power must be cut off when actuator’s any cover is open.(please see the warning
plate: “Forbid to open the box cover when the power is on.”)
10.5 Please check power’s phase sequence before debugging the product. Wiring
should be correctly operated.
10.6 The product’s explosion-proof cover cannot be knocked or scratched during
maintenance or debugging.
10.7 Apply anti-rust painting 204-1 after debugging or maintenance and before
assembling.
10.8 Please notify the company to change the broken explosion-proof elements. The
products cannot be powered on until it is renewed with qualified element.
10.9 Forbid to turn the switch hand strongly to the last position after using the
