172-65316M-08 (MB12A/MB12AF/MB12B/MB12BF) 7 Oct 2021
15
Manual Operation
Take measures to prevent people from coming into direct contact with
product outlets. Failure to do so may result in burns or other injury from
the discharge of fluids.
CAUTION
1. Perform manual operation only after first making sure that the power is OFF.
Manual operation is not possible when the power is ON.
For safety, make sure the power is OFF even during a power outage.
2. Using a wrench, turn the manual open/close shaft (side-to-side width: 12 mm)
located on the bottom (valve side) of the actuator.
Turn the shaft one revolution to rotate the valve section 90°.
The shaft may be turned in either direction.
There are no stoppers at the valve fully-open and fully-closed positions. Pay
close attention to the open/closed indicator as the shaft is being turned.
Manual
Open/Close
Shaft
Open/Closed
Indicator