SHAFT SEAL CHANGE INSTRUCTIONS
IMPORTANT SAFETY
I
NSTRUCTIONS- PLEASE READ AND FOLLOW ALL
INSTRUCTIONS
When
servicing electrical equipment,
basic
safety
precautions
shou
ld
a
l
ways
be
observed including
the
followi
n
g
.
Fa
i
lure to fo
l
low the instructions
may
result in
injury.
•
Disconnect
the pump motor
power cord
from the power
ou
tl
et
before
beginning the
shaft seal
replacement
.
•
Only
qualified personne
l
should
att
em
pt to re
p
lace the shaft
seal. Contact
your
local Authorised
Thera
l
ux
Service
Centre
i
f
you
have any q
u
estions.
•
Ex
ercise
extreme care in
handling both the rotating
and
s
tationary
sections
of
the two-part
replacement seal.
Foreign matter o
r
improper ha
n
dling wi
l
l
easily scratch the graphite
and
ceramic
sealing surfaces
.
•
See
the
"Parts D
i
agram"
on page 5
fo
r
the
pump component
locations
.
Removing
the Motor
Assembly
1
.
Remove the
six
(6)
3/8"
x
2"
hex h
e
ad bolts
(i
t
em 14), which ho
l
d the motor
assembly to the pump/strainer housing (item
1), us
i
ng a
1/2"
AF
spanne
r
o
r
socket.
2. S
l
ide the
motor assembly
out
of the pump/st
r
ainer ho
u
s
i
ng (item 1
),
exposing the
diffuser
(item 6)
.
Pull
the
diffuser
off
the
seal plate (item
10),
exposing the impeller. (The
diffuser may
r
emain in the
pump
/
strainer housing.
To remove
,
pull
it straight
out
of the
pump
/s
trainer housing
.
Removing
the
Impeller
1.
To prevent the motor
shaft
from turning
,
insert a
fla
t
b
l
ade screwdriver
through the centre
hole
in
the fan
cowling
and
into
the
slot on the end of
the
moto
r
shaft
and hold
it.
2. Remove the
impeller
(
item
8) by
r
otating
i
t
counter- clockwise
.
The spring
portion
of the seal assembly is now exposed.
Note
carefully the
position
of
the spring
seal, and
r
e
move
it. A
l
so
r
e
move the
impel
l
er ring
(item 7)
from the
impeller and note the way
i
t
was
installed
.
Removing
the
Ceram
i
c Seat
1.
Remove the
seal
plate
(item
10)
from the motor
mounting
plate
(item
13)
.
2. Press the
ceramic
seat
with
rubbe
r
cup out
of the
seal
plate
(item
10)
.
I
f
tight
,
use
a
small screwdriver to
tap the seal
out from the
back
si
de of
the
seal
plate
.
IMPORTANT
-
Clean all recesses
and
parts to be reassembled.
Inspect gaskets and replace
if
necessary.