Duff-Norton SK6420-6 - Manual (Page 11)

11
38. Assembly of Cover
a. Feed motor (53) lead wires into capacitor box
cover (9). Care should be taken not to damage
lead wires. Assemble cover on housing (42),
aligning dowel pins (27) with bore in cover and flats
of limit switch shaft (22) with bore and slot in end of
screw (62).
CAUTION
Be sure that limit switch shaft (22) is properly aligned with
ball screw (62) and flange bearing before lightly tapping cover
(25) into place with a soft hammer seating cover (9) against
gasket (41) and housing (42).
NOTE
Limit switch shaft should be able to spring up when a light
pressure with finger is applied downward on limit switch nut
and removed.
b. Install lock washers (8) and button head screws
(7).
c. Feed motor lead wires (red and blue small
terminal ends only) into cover switch box through
5/8” diameter hole. Install terminal of red lead wire
on normally closed terminal of left side of switch.
Install terminal of blue lead wire on normally closed
terminal of right side of switch. (Wires going to
switches should be same color.) It may be necessary
to install terminals on switch terminals tabs with
needle-nose pliers and care should be taken not to
damage terminal tab or switch (see Figure 6-3).
d. Feed terminal wires, (17) red, (18) blue and white
motor lead wire through 1/2" tapped hole in cover
capacitor box outside of cover.
e. Moving wires out of the way, insert capacitor (5)
into box (termials up) and attach motor lead wire
(large connectors) to capacitor terminals. (Red on
one pair of capacitor terminals and blue on the other
pair of capacitor terminals.)
f. Insert insulation (4) over capacitor and assemble
gasket (3) and cover (2) with screws (1).
g. Adjust actuator limit switch settings per
instructions in paragraph 2-2.
h. If actuator has potentiometer, refer to
position indicator installation and calibration
instructions in Paragraph 2-4.
I. Attach gasket (12) and cover (11) with screws (1).
ASSEMBLY IS NOW COMPLETE.
DN-SK6420-6-1006 10/10/06 11:40 AM Page 11