Illustration shows 4 Limit Switches. The SMART
EHO has options for 2 or 4 Limit Switches.
Limit Switch #1 Target
Installation, Operation and Maintenance Manual
VCIOM-15345-EN Rev. 1
February 2022
29
Start-up Procedure
Section 4: Start-up Procedure
!
WARNING
If the actuator is being installed in a hazardous area, use extreme care. This procedure
requires the limit switch cover to be open while electrical power is connected to the unit.
Follow these steps only when the atmosphere is free of explosive gases.
4.8.3
Fail-Safe Close Limit Switch Adjustment
4.8.3.1
The Open and Close Limit Switches, shown in Figure 16, are operated
by targets mounted in a plastic disk that rotates with the actuator
stroke. To adjust a Target, push down on it and slide it in a clockwise or
counterclockwise direction.
Figure 11
Remove Cover for Limit Switch Chamber
Figure 12
View of Limit Switch Targets
NOTICE
The Switch Targets will be labeled to identify the switch they operate.
4.8.3.2
With the actuator in the Fail-Safe Close Position, rotated fully clockwise,
the Target for CLOSE LS-2 will need to be adjusted.
4.8.3.3
Reconnect electrical power to the unit.
Limit Switch #1 Target
Illustration shows 4 Limit Switches. The Biffi EHO
has options for 2 or 4 Limit Switches.
