February 2022
Installation, Operation and Maintenance Manual
VCIOM-15345-EN Rev. 1
26
Start-up Procedure
Section 4: Start-up Procedure
4.6
Check Rotation
4.6.1
Turn on the electrical supply to the unit. If an ((optional)) Circuit Breaker Module is
supplied, turn the Circuit Breaker to ON.
4.6.2
Turn the LOCAL/OFF/REMOTE Selector Switch to LOCAL.
NOTICE
On Spring-Return units, Fail-Safe Close units OPEN with the Power Cylinder and
Spring-Return CLOSE. Fail-Safe Open units CLOSE with the Power Cylinder and
Spring-Return OPEN. The Biffi EHO contains phase correction software that will correct
the rotation of the motor if the motor is wired to the power supply incorrectly.
4.6.3
Ensure Flow Control Valves (7) are adjusted fully counterclockwise for
maximum flow.
4.6.4
Open inspection port on side of unit to observe the rotation of the
motor/pump shaft.
Figure 10
Inspection Port for Motor Rotation
4.6.5
While observing the inspection port, for motor rotation, turn and release the
OPEN/CLOSE Selector Knob to Power Stroke the actuator and immediately turn
the Selector Knob to Off Position. Verify the motor rotation is consistent with the
decal on the motor tag, looking from the back of the motor.
4.6.6
If needed, correct motor rotation.
NOTICE
If the Biffi EHO Actuator is supplied with optional ESD, before operating a
motor-powered stroke, a customer supplied ESD signal must be present and
Solenoid Valve (17) energized.
