Advertisement
MAINTENANCE
Lubrication
It is not necessary
to lubricate
the pump
or its motor.
The motor has two ball bearings
lubricated
for life. The
mechanical
shaft seal in the pump
is water
lubricated
and self-adjusting.
Draining
for Winter
When
the pump
is to be disconnected
from service,
or
is in danger
of freezing,
it should
be drained.
Turn power
to pump
OFE Open
a faucet to bleed
off
pressure.
Remove
the priming
plug to vent the pump.
Drain
the pressure
tank.
Drain
all piping
to a point
below
the freeze line.
To drain an air volume
control,
remove AVC tubing
and
turn (loosen)
it 180 ° on the 1/4" pipe fitting in the tank.
This will permit
any water remaining
in the air volume
control
to drain back into the tank.
To drain pressure
tank, remove
plug, piping
or hose at
lowest
point
in the tank.
The Shaft Seal
The pump
is designed
for ease of servicing.
Should
re-
pair or replacement
of the motor
or seal be needed,
the
pump
and piping
do not need
to be disconnected
or
disturbed.
If it is necessary
to repair
or replace
the motor,
it is a
good idea to replace
the seal plate gasket and the shaft
seal, Key Nos. 4 and 5 of pump
drawings,
Page 10.
Therefore,
we suggest
that you order these two items
to have on hand for future
use.
The seal consists
of primarily
two parts; a rotating
half
and a ceramic
seat.
NOTICE:
The highly polished
and lapped
faces of the
seal are easily damaged.
Read the instructions
thor-
oughly and handle
the seal with care.
1.
Disconnect
electric
service
(pull switch),
and dis-
connect
wiring
to pump.
Disconnect
pressure
switch
tube.
2.
Remove
capscrews
holding
motor
to pump
body.
Motor
with
impeller
and diffuser
can
now
be
removed.
685 O294
\
4echanical
sea[
rotating
half
\
3.
Carefully tap diffuser to remove
from seal plate.
4.
Remove
canopy
from end of motor.
5.
Partially unscrew
capacitor
clamp; move capacitor
to one side.
6.
Hold motor
shaft with 7/16" wrench
on the flats on
the motor
shaft and unscrew
impeller.
SealPlat
Removal of Old Seal
1,
After unscrewing
impeller,
carefully
remove
rotat-
ing part
of seal by prying
up on sealing
washer,
using two screwdrivers
(see Figure 7A). Use care
not to scratch
motor
shaft.
2.
Remove
seal plate from motor and place on flat sur-
face, face down.
Use a screwdriver
to push ceramic
seat out from seal cavity (see Figure 7B).
Installation
of Floating
Seat (Figure 7C)
1.
Clean polished
surface
of floating
seat with
clean
cloth.
2.
Turn seal plate over so seal cavity is up. Clean cav-
ity thoroughly.
3.
Lubricate
outside
rubber
surface
of ceramic
seat
with soapy water and press firmly into seal cavity
with finger pressure.
If seal will not locate properly
in this manner,
place cardboard
washer
over pol-
ished face of seat and press into seal cavity using a
3/4" socket or 3/4" piece of standard
pipe.
4.
DISPOSE
OF CARDBOARD
WASHER.
Be sure
polished
surface
of seat is free of dirt and has not
been damaged
by insertion.
Remove
excess
soapy
water.
Installation
of Rotating
Part of Seal Unit
(Figure 7D)
1. Reinstall
seal plate using
extreme
caution
not to
nick or scratch
ceramic
portion
of seal on motor
shaft.
2.
Inspect
shaft to make sure that it is clean.
3.
Clean face of sealing washer
with clean cloth.
3/4" socket
Cardboard
washer
_
(SOl_li_
w/eeal)
Polished
surface
Rubber
su_ace
Sealing
face
Shaft
/ shoulder
Rubber drive
Impeller
A-Seal removal-rotating
half
Figure 7
B-Seal removal-stationary
half
C-Stationary
half installation
7
D-Rotating
half installation
Advertisement
