Hydromatic S, Installation And Service Manual, Page: 7 / 16

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bottom of stator housing and
remove plug in top of hous ing
to allow air to enter.
3. After chamber is drained,
remove hold-down bolts
and lift off. Use care in
lifting as the seal failure
con nect ing wire must be
dis con nect ed before housing
is com plete ly removed. See
sec tion al drawing.
4. Set assembly on bench and
re move con nec tion box. When
box is lifted off, connection
wires to motor will be
exposed. These wires will
probably be burned, but each
wire is tagged with a metal
marker giving wire num ber.
Cut the wires.
If the leads to the connection
box are burned, a complete
new con nec tion box with new
wire must be used. The wires
are potted in with sealing
com pound and a new unit must
be obtained from the factory.
5. The stator is held in the
housing with a bolted-in
clamp ring.
6. After ring is removed turn
hous ing upright and bump on
hard wood blocks. This should
jar the stator loose and allow it
to drop out.
7. Thoroughly clean hous ing
before replacing new stator.
Replace sta tor and make all
wire con nec tions to connection
box before re plac ing housing
on pump. This is im por tant as
leads must be tucked behind
the windings by using hands
up through rotor core.
IMPORTANT: Use only
compression type insulated
connectors on the wires. Do not
tape leads as oil will de te ri o rate
the tape and cause dam age to
stator and bear ings.
8. Drain oil from cham ber. If
oil is clean and no wa ter
is present, seals can be
considered sat is fac to ry to re use.
9. Check top bearing. If clean and
does not turn rough, bearings
can be reused and it is not
necessary
to com plete ly
dismantle pump to change
bearings. If bearings are
dam aged with dirt or heat they
must
be replaced. See
ad di tion al instructions on
re plac ing seals and bearings.
Re mem ber to reinstall the
upper bearing load spring.
10.Replace stator hous ing onto
seal chamber and bolt in place.
Be sure seal failure wire
is con nect ed before housing is
as sem bled.
Be sure O-ring seal has been
replaced. If O-ring is nicked or
cut replace the new rights.
This ap plies to all O-rings used
in as sem bly.
11.After all leads are reconnected
in the con nec tion box make a
high voltage ground test on
each wire. The only wire that
should show ground is the
green power lead and the
ground lead in the aux il ia ry
control cable.
12.For safety, complete pump
should be air checked under
water for leaks. If seals were
OK, refill seal chamber with
oil. Lay pump on side for this
oil filling, with oil fill hole
upright. Do not completely fill;
leave oil about 1 inch below
plug hole. Use only high grade
transformer oil or regular
Hydromatic submersible oil in
this chamber. Replace plug;
use Permatex on threads.
Install air valve in top plug
opening of motor housing and
charge housing with about 10
psi of air. Be sure air is dry. Do
not use air line where water
may be trapped in the line.
Submerge complete unit under
water and check for leaks.