S SERIES PUMPS
OM-07264
MAINTENANCE AND REPAIR
PAGE E - 20
When potting has been completed, leave the ter
minal plate assembly undisturbed until the potting
material has cured. Complete curing usually takes
about 24 hours. Curing time can be shortened by
using a heat lamp, but be careful not to melt the
potting or potting mold, or burn the cable. When
the potting material is no longer “tacky” to the
touch, it has cured.
Terminal Housing Installation
(Figure 2)
After the terminal plate has been sealed, slide the
terminal housing down the cable. Untape the
ground leads and secure them to the ground termi
nals with the hardware (2 and 3).
Be sure
the leads
make good contact with the housing.
Pull gently on the cable to remove any excess
length from within the terminal housing. The termi
nal plate should fit loosely against the terminal
housing.
Lubricate the upper bore of the terminal housing,
and slide the cable grip assembly (6) into place.
Do not fully tighten the nuts at this time.
Position the lower gasket (14) against the terminal
plate.
NOTE
A
small
amount of gasket adhesive may be used to
hold the upper and lower terminal plate gaskets in
place to ease assembly.
Position the terminal housing assembly over the
motor housing and, using the voltage and phase
instructions below, secure the motor leads to the
terminal posts (17) using the allen head setscrews
(18). (The motor leads may be trimmed to length as
required.)
Connect the motor leads (T1, T2, and T3) to corre
sponding terminal posts (T1, T2 and T3).
After the wire terminals have been secured, check
their locations for correctness.
Position the terminal housing and terminal plate
against the motor housing. If required, rotate the
terminal housing and twist the motor leads to re
move excess slack.
(Figure 1)
Coat the threads of the motor housing studs (20)
with `Never‐Seez' or equivalent compound, and
secure the terminal housing assembly to the motor
housing with the hardware (21 and 22); torque the
nuts evenly in a cross sequence to 11 ft. lbs. (132
in. lbs. or 1,5 m. kg.). Tighten the nut (6, Figure 2)
drawing the cable grip assembly down into the ter
minal bore.
Do not
overtighten and damage the
terminal gland or hardware.
NOTE
A .12 in. (3,05 mm) gap is required between the ter
minal gland cap flange and the terminal housing
when tighten the nuts.
See
FINAL ASSEMBLY
and
VACUUM/PRES
SURE TESTING
followed by
LUBRICATION
.
FINAL ASSEMBLY
(Figure 1)
If the discharge elsow (28) was removed from the
motor housing, replace the discharge flange gas
ket (17). Apply `Never‐Seez' or equivalent com
pound on the flange studs (18), and secure the
flange with the nuts (19).
If the hoisting bail (23) was removed, install the
bushings (24) in the motor housing and securing
the bail (23) to the motor housing with the hard
ware (25, 26 and 27).
After preforming the vacuum/pressure testing,
connect the discharge hose, and reposition the
pump. If rigid piping or long hose is used, reposi
tion the pump, then connect the piping.
VACUUM/PRESSURE TESTING
To ensure the water‐tight integrity of the pump, it is
recommended that the motor and seal cavities be
vacuum and pressure tested any time the seal and/
or motor are serviced. The seal cavity
must
be
pressurized to prevent separation of the seal faces
or unseating the stationary seal seat between the
seal and motor cavities. Use a manometer with a
range of 30 to 0 to 30 inches of mercury to perform
the vacuum test.
Do not
use a vacuum gauge. Vac
uum gauges are not sensitive enough to detect mi
nor leaks.
