TM 10-4610-232-12
(d)
If the valve actuator is supported by a bracket, merely slide the actuator away from the valve. If the valve actuator is
not supported by a bracket, set the actuator to the side, being careful not to kink the air hose (9) or supporting the
weight of the actuator by the air hose.
(e)
Place a blue manual handle (10) from storage box no. 3 (45, Figure 2-24) on the valve stem. Secure with
thumbscrew (11, Figure 2-74) packaged with valve handle. Using manual handle, turn valve to correct position.
(3)
When manual operation is no longer required, replace the actuator.
(a)
Actuator electrical connector (6) must be unplugged.
(b)
Shut down to standby.
(c)
Using manual handle (10), open valve (8).
(d)
Place actuator (5) over valve stem (12) and align so that valve actuating pin lines up with hole in the actuator. Use
actuator body to slightly turn valve stem as needed for alignment.
(e)
Replace clamp (7), tighten.
CAUTION
The cable connector is keyed to ensure proper connection. Make sure that the two halves
of the connector are aligned before attempting to make the connection.
(f)
Connect electrical cable (6).
(g)
Tighten nut (2) and bolt (3), if used.
(h)
Open air block valve (Figure 2-8).
Figure 2-75. Bypassing Air Backwash Valve
2-157
