Barnes 4SE-DS series, Инструкция по установке и эксплуатации

Страница: 12 / 28

12
Check motor capacitor (9, single phase units) with an Ohm
meter by fi rst 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 infi nity (∞) then drifts back, the capacitor is good. If needle
does not move or moves to infi nity (∞) and does not drift back,
replace capacitor (9). 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 Figures 17 & 18. 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 found to be defective,
contact a motor service station or Barnes Pumps 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).
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 grove 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 12).
Make internal wiring connections which are independent of
the terminal block as shown, using connectors (48) and wire
assemblies (49) as required. Do not use wire nuts. Slip motor
leads andground wire into fi berglass 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.
FIGURE 11
FIGURE 12