14
(25) and replace if required. If replacement is required, remove
bearing (25) from motor shaft using a wheel puller or arbor
press, see Figure 12
Check motor capacitor (9, single phase units) with an Ohm
meter by first grounding the capacitor by placing a screwdriver
across both terminals and then removing screwdriver. Connect
Ohm meter (set on high scale) to terminals. If needle moves
to infinity (∞) then drifts back, the capacitor is good. If needle
does not move or moves to infinity (∞) and does not drift back,
replace capacitor (9). To test the float switch (55 or 56 optional),
check for continuity between the pin receptacles of the cord
with the float in an “up” position. There should be no continuity
with the switch in the “down” position. Replace switch (55
or 56) if malfunctioning. If moisture sensors (4, optional) are
damaged, disconnect leads by removing machine screws (45)
and washers (46) from probes (4). Remove probes (4) from
seal plate (5). To test the temperature sensor (50, optional),
check for continuity between the black and white wires. If
found to be defective, contact a motor service station or Barnes
Pumps Service department. Inspect motor winding for shorts
and check resistance values. Check rotor for wear. If rotor or
the stator windings are defective, the complete motor must be
replaced.
IMPORTANT! - All parts must be clean before reassembly.
F-4.2) Reassembly:
Moisture Sensors, DS Models -
If pump is equipped with
optional moisture sensors, reassemble by applying thread
compound to threads on probes (4) and install in upper seal
plate (5), see Figure 20 & 21. Connect wire assemblies (53) to
probes (4) with washers (46) and machine screws (45).
Thermal Sensors -
If pump is equipped with optional thermal
sensors, use terminal connectors (52) to connect wire
assemblies (51) to sensor leads. If sensor is not functioning,
contact factory approved Service Center or Contact factory
Service Department.
Bearings -
When replacing bearing, be careful not to damage
the rotor or shaft threads. Clean the shaft thoroughly. Press
bearing (25) on the motor shaft, position squarely onto the
shaft applying force to the inner race of the bearing only, until
bearing seats against the retaining ring (24) (Included with
motor).
Motor -
Slide lower bearing (25) and motor shaft
squarely into the seal plate (5) until bearing seats on
the bottom. Place stator over rotor, lining up motor bolts with
holes in seal plate (5). Position capacitor (9, single phase units)
so that it will lay on the opposite side of the cable entry bosses
of the motor housing (6). Reconnect capacitor leads. Torque
motor tie bolts to 17 in-lbs. Set square ring (27) in groove on
seal plate (5).
F-4.3) Wiring Connections:
Check power cables (16) and control cable (56, if used), for
cracks or damage and replace if required (see Figure 14).
Make internal wiring connections which are independent of
the terminal block as shown, using connectors (48) and wire
assemblies (49) and (63) as required. Do not use wire nuts. Slip
motor leads and groud wire through fiberglass sleeve. Lower
motor housing (6) down onto seal plate (5) while aligning holes
and stringing motor leads through the cable entry bore(s).
(Slipping cords inside a 1 ft. length of .5” conduit makes this
easier). Place socket head cap screws (47) through seal plate
(5) into motor housing (6) and torque to 60 in-lbs.
Reconnect motor and optional control leads to the underside
of the terminal block(s) (21), (54 optional) as shown in
Figure 13. Note that the pins are numbered underneath the
terminal block. Place o-ring (20) into groove in terminal block
and lubricate with dielectric oil. Press the terminal block (21)
into the housing so it seats completely below the snap ring
groove. Place snap ring (19) into groove in cable entry bore of
housing. Repeat terminal block installation for control cable, if
equipped.
F-4.4) Cable Assemblies:
Power/Control Cable- Refill the cooling oil as outlined in
paragraph F-1.3. Make wire connections as outlined in
paragraph F-4.3. Insert female end of cable plug into housing
bore aligning timing mark with hole in terminal block (21) see
Figure 15. Compress cable plug with compression flange
(16a) by tightening hex bolts (11) into the housing (6). Torque
to 132 in-lbs.
SECTION: G REPLACEMENT PARTS
G-1
FIGURE 12
FIGURE 15
Summary of Contents for 104872
Page 16: ...16 FIGURE 13 ...
Page 17: ...17 FIGURE 13 ...
Page 18: ...18 FIGURE 13 CONTIUED ...
Page 20: ...20 FIGURE 16 SE L 3SE L Series Single Seal ...
Page 21: ...21 FIGURE 17 SE L 3SE L Series Single Seal ...
Page 22: ...22 FIGURE 18 SE HT High Temp Series Single Seal ...
Page 23: ...23 FIGURE 19 SE HT High Temp Series Single Seal ...
Page 24: ...24 FIGURE 20 3SE DS Series Double Seal ...
Page 25: ...25 FIGURE 21 3SE DS Series Double Seal ...
Page 29: ...29 Notes ...
Page 30: ...30 Notes ...
