February 2022
Installation, Operation and Maintenance Manual
VCIOM-15345-EN Rev. 1
30
Start-up Procedure
Section 4: Start-up Procedure
4.8.3.4
Push down on the Target for CLOSE LS-2 and move clockwise until it is off
of the switch in the clockwise direction. Refer to the wiring diagram for
terminal connections for limit switch confirmation and continuity check.
4.8.3.5
Now, push down and slide the Target for CLOSE LS-2 counterclockwise
until continuity is verified. It is important to always adjust a Target in the
opposing direction of the valve travel to get an accurate setting.
4.8.3.6
With the LOCAL/OFF/REMOTE Selector Switch set to LOCAL, toggle the
Control Selector Knob to OPEN and allow the actuator to travel to the
Open position, rotated fully counterclockwise.
4.8.3.7
Push down and slide Target for OPEN LS-1 counterclockwise until it is off
the switch in the counterclockwise direction.
4.8.3.8
Now, push down and slide the Target for OPEN LS-1 clockwise until
continuity is verified.
4.8.3.9
Toggle the Control Selector Knob to CLOSE and allow the actuator
torotate clockwise to the fully closed position and check to see CLOSE
LS-2 is operated; verify continuity. Cycle the actuator open and closed a
few times checking the setting of CLOSE LS-1 and OPEN LS-2.
4.8.4
Fail-Safe Open Limit Switch Adjustment
4.8.4.1
With the actuator in the Fail-Safe Open Position, rotated fully
counterclockwise, the Target for OPEN LS-1 will need to be adjusted.
4.8.4.2
Reconnect electrical power to the unit.
4.8.4.3
Push down on the Target for OPEN LS-1 and move counterclockwise
until it is off of the switch in the counterclockwise direction. Refer to the
wiring diagram for terminal connections for limit switch confirmation
and continuity check.
4.8.4.4
Now, push down and slide the Target for OPEN LS-1 clockwise until
continuity is verified. It is important to always adjust a Target in the
opposing direction of the valve travel to get an accurate setting.
4.8.4.5
With the LOCAL/OFF/REMOTE Selector Switch set to LOCAL, toggle
the CLOSE selector knob and allow the actuator to travel to the Close
position, rotated fully clockwise.
4.8.4.6
Push down and slide Target for CLOSE LS-2 counterclockwise until it is off
the switch in the clockwise direction.
4.8.4.7
Now, push down and slide the Target for CLOSE LS-1 clockwise until
continuity is verified.
4.8.4.8
Toggle the Control Selector Knob to OPEN and allow the actuator to
rotate counterclockwise to the fully open position and check to see OPEN
LS-2 is operated; verify continuity. Cycle the actuator open and closed a
few times, checking the setting of CLOSE LS-1 and OPEN LS-2.
4.8.5
Four Limit Switch Models
4.8.5.1
If your unit utilizes four switches LS-3 OPEN and LS-4 CLOSE, adjust in
the same manner except you will need to use a continuity tester on the
terminal strip to detect switch operation. Look at these switches on the
wiring diagram for exact configuration.
