21
Operation
When using this product, NEVER stand close to, or leave tools anywhere
near moving parts, such as the ajustment screw. Contact with moving
parts or objects becoming caught in moving parts could lead to injury or
damage or other accidents.
CAUTION
Procedure
1. Operational check
1) Before turning ON the power, check to make sure all cable connections are correct.
2) To close the valve, send an operation signal value of 0% (4 mA) or less from
the controller to MC-COSR and maintain that value.
3) Turn ON the power to the actuator.
4) The MC-COSR valve should be closed.
• Check to make sure no steam is flowing
to the secondary side.
• Check to see whether there is a slight
back and forth motion of the pressure
adjustment screw. If there is, this may
be due to EM interference.
Steam
5) On the controller, increase the value of the operation signal
to the MC-COSR.
172-65185A-08 (MC-COSR Multi-control Valve) 20 Nov 2014
• Check to make sure that, when viewed from above, the
adjustment screw in the drive section is rotating clockwise
while moving downward.
• Check to make sure that steam begins to flow to the
secondary side of the MC-COSR and the secondary steam
pressure rises.
Adjustment
Screw
6) At the same time, begin reducing the value of the operation
signal to the MC-COSR on the controller.
Adjustment
Screw
Clockwise &
Down
Counter-
clockwise
& Up
• Check to make sure that, when viewed from above, the
adjustment screw in the drive section is rotating counter-
clockwise while moving upward.
• Check to make sure that the steam pressure on the
MC-COSR secondary side decreases.
7) In the event that an abnormality is detected in operation when checking with the
above procedure, consult the Troubleshooting chapter in this manual and take the
appropriate remedial steps.
2. AUTO operation
Enter target settings and other necessary parameters into the controller and start
AUTO operation. The drive section of the MC-COSR will begin operating
automatically in response to the operation signals from the controller.
