8
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.
14.Refill motor chamber with oil.
Use high grade transformer
oil or Hydromatic special
submersible oil. Fill chamber
until oil covers top of windings.
Leave air space in top for
expansion. Use Permatex on
plug threads.
Replacing Seals and Bearings:
1. Drain all oil from motor chamber
and seal chamber as described.
2. Remove motor housing as
described.
3. Remove bolts that hold seal
chamber to pump housing. Use
back-off screws to break loose.
With hardwood block, tap end
of impeller to loosen from
shaft. When free, remove
impeller from shaft.
4. Lift rotating assembly (rotor,
shaft and impeller) from pump
case and place horizontally
on bench.
5. Remove screw and washer
from end of shaft and then
screw socket head bolt back
into shaft. Using a screwdriver
on opposite sides behind
impeller, apply force then tap
on end of socket bolt to break
impeller loose from taper
shaft.
6. Remove key and pry on each
side of shoulder of shaft sleeve
to remove. Seal should come
off with sleeve. If sleeve is not
free, leave in place and push
off when seal plate is removed.
7. To remove seal plate take out
socket head flat screws and
using screws in back-off
holes, pry plate loose. This will
also force seal off if not
already removed.
8. Remove snap ring that holds
upper seal. Pull seal if it is free.
If not free, it can be forced off
when shaft is removed.
9. Remove 4 bolts that hold bearing
housing in place (on units built
prior to 2/14/78). Set assembly
in upright position and bump
end of shaft on hardwood
block. This will push the bearing
from the housing and will
force upper seal from shaft.
10.Use bearing puller to remove
bearings. Replace with new
bearings. Press only on inner
face of bearing when replacing.
Pressing on outer face can
damage the bearing. Bearings
are standard size that can be
obtained from any bearing supply
house or can be obtained from
Hydromatic factory.
11.
Important:
Do not use any of
the old seal parts. Replace with
all new seals.
12.Thoroughly clean all castings
before replacing seals. One
grain of dirt between the seal
faces can cause failure.
13.Examine all O-rings for nicks
before using.
14.Be sure key is in place in notch
of shaft sleeve to prevent
sleeve from turning.
15.Use Locktite on socket head
locking screw in end of shaft.
16.Before refilling chamber with
oil, air test as described above.
17.Refill both chambers with oil
as described above.
18.Always check all leads with
high voltage or with Megger
for grounds before operating
the pump.
Pump
Maintenance
Содержание Hydromatic S4LRC-3450 RPM
Страница 11: ...11 Wiring Diagrams...