OSCNS209-EN
6/7
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
CONTROL
• Set to stabilize the MV value the PID constant of the
adjustment meter.
• The life of the actuator and the valve becomes short if
the movement of MV value is used on unstable
condition.
• Use shielded wire for signal wiring where high level
noise is generated or when the wiring distance is long.
• When wiring, if wiring of a signal is mistaken, it will not
operate correctly. Contact us when you use two valve
or more by one controller or indicator.
• Input signal circuit is non-isolated.
Do not connect DC (-) wire to other DC (-) common.
• The input signal and operation mode are set as
follows. (Factory shipped)
Input signal
4 to 20 mA
Operation mode Mode A
Operation
SHUT by decreased signal
OPEN by increased signal
OPERATION
TESTING
• Make sure that power supply voltage is correct. Also
check operating position, wiring, speed and signals.
• During trial operation, check that valve movement and
output signal are correct.
ATTENTION
• Keep power supplied for built-in space heater to
prevent condensation inside actuator.
• Do not touch the moving parts of actuator in
operation.
• Never put anything on the actuator or make it into a
foothold.
ADJUSTABLE RANGE OF STROKE
LAX-030
• SHUT by an input signal 4 mA and shipped.
• It is not necessary to adjust the stroke.
LAX-070
• SHUT by an input signal 4 mA and shipped.
• Can be adjusted in the range of 7 to 11.5 mm.
(default stroke: 11.5 mm)
MANUAL OPERATION
PRECAUTIONS
• Manual operation should be a temporary operation.
• Be sure to turn off the power before manual operation.
NOTE
• See indicator during operation and check OPEN /
CLOSE position to prevent overturn.
• For manual operation, do not give more than the rated
torque and make at a slow rate. Actuator might be
damaged if excessive force is added.
Manual operation is to put a wrench
(width: 13 mm)
，
turn manual shaft slowly.
MAINTENANCE
• To prevent electric shock, be sure to turn off the power
when removing the actuator cover.
• Perform the first time in the state of the first stage
included in real operation.
• Do the routine maintenance at least once in half a
year.
Inspection items
• Confirm operation of opening and closing.
• Confirm that an actuator is not hot excessively.
• Confirm existence of abnormal noise and
vibration during operation.
• Confirm whether screws are loose or not.
• Confirm that water or condensation no remains
in the actuator.
• Confirm that operate the hunting or move
continuously at high frequency.
OPEN
CLOSE
