Submittal Sheet

VBN THREADED CONTROL BALL VALVES AND ACTUATORS
25 63-2648—07
Fig. 41. MS3103 with Sylk Bus control.
NOTE: All identified parts except for the valve body and
aluminum valve stem coupler are included in
Replacement Kit (part no. 5112-11).
OPERATION AND CHECKOUT
Once both the mechanical and electrical installations are
complete:
1. Cycle the actuator to verify that the direction of rota-
tion suits the control sequence.
2. If the rotation direction is incorrect:
a. For 2-position and Sylk-enabled actuators:
Remount actuator on the bracket.
b. For floating control actuators: Reverse two control
signal wires (CW/CCW).
c. For analog control actuators either:
(1) Reposition reverse/direct acting switch, or
(2) Remount actuator on the bracket.
d. For modulating control actuators, reposition
reverse/direct acting switch 1.
3. If the control scheme requires fail-safe operation,
ensure that, upon removal of power, the fail position
coincides with the control sequence.
4. If the fail safe position is incorrect, remove and rein-
stall the actuator in the opposite orientation as fol-
lows:
a. Loosen the shaft coupling bolt using a 10 mm
wrench.
b. Loosen all other mounting bolts connecting the
actuator to the mounting bracket, and set aside.
c. Remove the actuator from the valve shaft.
d. Move the actuator coupling to the opposite side
of the actuator, as displayed in Fig. 42.
(1) Remove the retainer clip from the shaft cou-
pling and set it aside for later use.
(2) Remove shaft coupling from one side of the
actuator.
(3) Replace the shaft coupling on the opposite
side of the actuator, aligning it based on the
stroke labelling.
(4) Replace the retainer clip on the shaft coupling
using the groove of the coupling.
e. Reconnect the actuator to the valve mounting
bracket by replacing the screws previously
removed (step b)
f. Tighten the shaft coupling bolt using a 10 mm
wrench.
Fig. 42. Mounting shaft coupling to actuator opposite
side.
1
2
3
HOT
COM
CONTROLLER
LINE VOLTAGE POWER SUPPLY.
PROVIDE DISCONNECT MEANS
AND OVERLOAD
PROTECTION AS REQUIRED.
24 VDC SUPPLY ACCEPTABLE.
ADDRESS SELECTOR
S-BUS
S-BUS
24 VAC
CLASS 2
S-BUS
S-BUS
RED
BLACK
BROWN
BROWN
ACTUATOR
ADDRESS 11
ADDRESS 12
ADDRESS 13
ADDRESS 14
ADDRESS 15
TEST
M19579A