Barnes 3SE3054DS, Installation And Operation Manual

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that it will lay on the opposite side of the cord entry bosses
of the motor housing (2). Reconnect capacitor leads. Torque
motor tie bolts to 22 in-lbs. Set square ring (36) in groove on
bearing bracket (20).
F-3.3) Wiring Connections:
Check power cord (9) and control cord (10), for cracks
or damage and replace if required. Make internal wiring
connections which are independent of the terminal block as
shown in (see Figure 11), using connectors (11) and wire
assemblies (16) as required. Do not use wire nuts. Slip
motor leads and ground wire through
fi berglass sleeve (50).
Lower motor housing (2) down onto bearing bracket (20)
while aligning holes and stringing motor leads through the
cord entry bore(s). (Slipping cords inside a 1 ft. length of .5”
conduit makes this easier). Place socket head cap screws
(42) into motor housing (2) and torque to 75 in-lbs. Install
inner seal assembly as outlined in paragraph F-4.2. Install
square ring (36), bearing bracket (20), square ring (36) in
position on pump. Place socket head cap screws (35) through
seal plate (24) and torque to 75 in-lbs.
Reconnect motor and control leads to the underside of the
terminal block(s) (21), (26) as shown in Figures 5 and 11.
Note that the pins are numbered underneath the terminal
block. Place o-ring (8) into groove in terminal block and
lubricate with dielectric oil. Press the terminal blocks (21) (26)
into the housing so it seats completely below the snap ring
groove. Place snap ring (51) into groove in cord entry bore
of motor housing (2). Repeat terminal block installation for
sensor cord, if equipped.
F-3.4) Cord Assemblies:
Power/Sensor Cords - Re fi ll the cooling oil as outlined in
paragraph F-1.4. Make wire connections as outlined in
paragraph F-3.3. Insert female end of cord plug into housing
bore aligning timing mark with hole in terminal blocks (21)
(26) (see Figure 6). Compress cord plug with compression
fl ange (9a)(10a) by tightening cap screws (6) into the motor
housing (2). Torque to 132 in-lbs.
F-4) Shaft Seal and Diaphragm Service:
Important ! - Handle seal parts with extreme care.
DO NOT scratch or mar lapped surfaces.
F-4.1) Disassembly and Inspection:
Diaphragm -
To examine or replace the diaphragm (31)
or shaft seal (38), remove impeller (27) as outlined in
paragraph F-2.1. Drain oil from seal chamber as outlined
in paragraph F-1.2. Remove cap screws (6), lock washer
(4), handle (7), power cord (9) and sensor cord (10) from
top of motor housng (2). Remove socket head cap screws
(35) and lift seal plate (24) vertically, being cautious to
avoid seal damage, together with diaphragm (31), clamp
(37) and outboard stationary member (38A) of shaft seal
(38), from bearing bracket (20). Examine diaphragm (31),
if it is ruptured, cracked or damaged, replace by removing
screws (43), lock washers (44) and diaphragm clamp (37),
Also, clean out vent holes in seal plate (24). Check moisture
sensor electrodes (17) (if equipped) for damage. Replace
by disconnecting wires (15) by removing screws (13). Then
remove electrode (17) from bearing bracket (20). Pipe plugs
(30) replace sensor electrodes (17) when pump is supplied
without moisture sensors.
FIGURE 7
FIGURE 8
FIGURE 6