Flowserve I-75 Interface - Manual (Page 2)

2
Flow Control
Worcester Actuation Systems
2.2 Assembly Procedure
2.2.1 For 10-23 Size Electric Actuators (See Figure 2):
A. Pre-tap circuit board bracket holes with the self-tapping
screws. Mount these brackets to the actuator motors or
spacers as provided. The longer bracket is mounted to the
right side of the actuator when facing the terminal strip. Use
the motor mounting screws.
B. Remove and replace motor screws carefully to avoid stripping
the threads of these self-tapping screws.
C. Once these motor screws and brackets are firmly secured,
firmly tap the motor stator to ensure realignment of the top
motor bearing.
D. Loosen all terminal strip screws to connect the circuit board
wiring to the actuator terminal strip. See Section 3 for proper
wiring of circuit board to the actuator terminal strip. Wire
routing is important. Ensure that wiring is not pinched and is
not near cams or mechanical brake (if used).
E. Assemble circuit board into actuator. Slide rubber grommets
onto insulating board. Put nylon washers under heads of self-
tapping screws.
F. Put circuit board onto brackets. Fasten board to brackets
loosely using mounting screws. Use a nylon washer and a
rubber grommet under the self-tapping screw mounted on the
right side of board when facing terminal strip.
G. Snug down the circuit board and firmly secure mounting
screws.
2.2.2 For 25 and 30 Size Electric Actuators (See Figure 2):
A. Assemble circuit board to bracket as shown.
B. Place four of the rubber grommets onto the insulating board.
Put nylon washers on the screws and place screws through
the circuit board and insulation board. Start screws into the
bracket.
C. Where no insulation board is used, place a rubber grommet
between the board and the bracket. Firmly tighten all screws.
D. Use two screws to fasten circuit board bracket to the motor
mounting plate. Component side of the board is facing out.
Figure 2