TM 10-4610-232-12
(b)
Check that all blue lights work by pushing LIGHT TEST (26, Figure 2-4).
(c)
Compare open valves with listing of open valves which should be open for operating condition (see below).
(d)
The actual valve position can be determined by looking at the position indicator (10) in the actuator mounting bracket.
(2)
Set automatic valve for manual operation (Refer to Figure 2-76.1).
(a)
Shut ROWPU down to standby.
CAUTION
Do not pull on the wires to disconnect connector as the connector pins will be damaged.
Separate the connector halves by gently pulling both sides of the connector center split line
until the connector slides apart.
(b)
If the valve actuator (5) is supported by a bracket (1), loosen the nut (2) and bolt (3). Do not remove the support
halves (4). Close the appropriate air valve. Disconnect the electrical connector.
(c)
If the valve actuator (5) is not supported by a bracket (1), close the appropriate air block valve (Figure 2-8) and
disconnect the electrical connector (6).
(d)
Remove two screws (7) attaching valve actuator (5) to mounting bracket (8).
(e)
Loosen set screw (9) from position indicator (10).
CAUTION
Air lines and electrical cables may be damaged if the valve actuator is allowed to hang from
them. Do not allow the valve actuator to hang loosely by air lines or electrical cables.
(f)
If the valve actuator (5) is supported by a bracket (1), slide the valve actuator away from butterfly valve and remove
position indicator (10).
(g)
If the valve actuator (5) is not supported by a bracket (1), slide the actuator from the butterfly valve and carefully lay
the actuator on its side and support it as needed to keep the valve actuator from hanging by air lines or electrical
cables, then remove position indicator from valve.
(h)
Place handle (11) from storage box no. 3 (45, Figure 2-24) on valve stem.
(i)
Using handle (11), turn valve into desired position to open or close valve.
(3)
When manual operation is no longer required, replace the actuator.
(a)
Shut ROWPU down to standby.
(b)
Using handle (11) place valve in open position. Valve is in open position when hole in valve stem is parallel to piping.
(c)
Remove handle (11) and place position indicator (10) onto valve stem.
(d)
Slide valve actuator (5) into position indicator (10) and install two screws (7) to attach valve actuator (5) to mounting
bracket (8).
(e)
Tighten set screw (9) into position indicator (10).
CAUTION
The cable connector is keyed to insure proper connection. Make sure that the two halves of
the connector are aligned before attempting to make the connection.
(f)
Connect electrical cable (6) to valve actuator (5).
(g)
Tighten nut (2) and bolt (3), if used.
(h)
Open air block valve (Figure 2-8).
2-158.2 Change 12
