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OPERATION
Priming the Pump
NOTE:
To properly
prime the pump,
install a pipe tee in the
discharge
piping,
similar to that shown
in Figures
1 and 2 on
Page 3.
[& CAUTION Never
run
pump
dry. Running
pump
with-
out water
may cause pump
to overheat,
dam-
aging seal and possibly
causing
burns
to persons
handling
pump.
Fill pump
with
water
before
starting.
_WARNING
Explosion
Hazard.
Never run pump
against
closed
discharge.
To do so can boil water
in-
side pump,
causing
hazardous
pressure
ha unit, risk of ex-
plosion
and possibly
scalding
persons
handling
pump.
To prevent
damage
to internal
parts,
do not
start
motor
until
pump
has been
filled
with
water.
To prime
pump:
1. Remove
priming
plug (Figure
1, Page 3).
2. Fill pump
with water.
3. Replace
priming
plug, using Teflon tape on plug threads;
tighten
plug.
4. Start the pump.
Water
should
be pumped
in 1-2 minutes.
If not, repeat
steps
1, 2 and 3.
On shallow
depths
to water
(ten feet or less), the pump
vdIl more
than likely prime
the first time after following
the outlined
procedure.
From ten to 20 foot depths,
it is very likely you v_ill have
to shut the pump
off and reptime
per the outlined
pro-
cedure
several times.
5. If, after priming
pump
several times, no water is pumped,
check
the following:
A. Be sure suction
pipe is in the water.
B. Be sure suction
pipe has no leaks.
C. Be sure the pump
is not trying to lift water
too high.
(See "Piping in the Well," Page 4).
6. As long as foot valve and check
valve function
correctly
and suction
pipe does not develop
leaks, pump
should
not need
repriming
in normal
service.
MAINTAINING
YOUR
PUMP
Lubrication
It is not necessary
to lubricate
the pump
or its motor.
The
motor
bearings
are 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 must
be drained.
To drain it, turn off
power
and relieve all pressure
on the system.
Remove
pres-
sure
switch
tubing
from
the
side of the pump
housing.
Remove
the priming
plug to vent the pump.
Drain the pres-
sure tank; drain all piping
to a point
below
the freeze
line.
To drain
an air volume
control
(AVC), remove
the tubing
from it and turn the AVC upside
down.
This will permit
any
water
in the AVC to drain into tank.
Disassembly and Assembly of Pump
&WARNING Risk
of electrical
shock.
Be sure
Unit is
grounded
and power
disconnected
before
at-
tempting
any work
on pump
or motor.
Your SEARS pump
is designed
for ease in servicing.
Should
repair
or replacement
of the motor or seal be needed,
the
pump
and piping
do not need
to be disconnected
or dis-
turbed.
l.
Disassemble
ptmap as follows:
A. Disconnect
power.
B. Remove
pressure
switch
tube from pump
body and
allow pump
to drain.
C. Remove
four hexnuts
and lockwashers
(Key Nos. 24
and 23, Page
12) which
hold the pump
body to the
motor.
D. Remove
motor,
seal plate,
impeller,
rubber
pad and
diffuser
(Key Nos. 1, 3, 7, 8 and 9, Page 12) as a unit.
You may have to pry gently with two screwdrivers
be-
tween
the motor
flange and the pump
body to sepa-
rate pump
and motor.
2. Reassembly
of pump:
A. install
O-Ring gasket
on seal plate (Key Nos. 5 and 3,
Page 12).
B. Pick up a small
amount
of petroleum
jelly on one fin-
ger and
spread
evenly
over
seal plate
and venturi
O-Ring gasket
for lubrication
during
reassembly.
Be
careful
not to nick or tear O-Ring.
C. Replace
motor
onto pump
body; be sure rubber
pad
(Key No. 8, Page 12) stays in place on top of diffuser.
Remount
base on lower studs.
Tighten
four hexnuts
and lockwashers
snugly (35_15 inch-lbs,
torque).
Do
not
overtighten.
D. Replace
pressure
switch
tubing
and motor
wiring.
E. Prime pump
according
to instructions
above.
F. Check
for leaks.
Removing
Motor
for Service
and Replacing Shaft Seal
If it is necessary
to separate
motor
and seal plate,
always re-
place
the shaft
seal.
We suggest
you purchase
this item,
U109_A,
and have it on hand
for future
use.
NOTICE:
The seal consists
of two parts,
a rotating
member
and a ceramic
seat. The surfaces
of the seal are easily dam-
aged. Read instructions
carefully.
Remove
motor
as follows:
l.
Disassemble
pump
per instructions
above.
2. Remove
diffuser
and impeller
as follows
(Key Nos. 9 and
7, Page 12).
A. Remove
screws
holding
diffuser.
B. Loosen
two screws
aiad remove
motor
canopy
from
motor
(Key No. 1, Page 12).
C. Place 7/16" open
end wrench
on motor
shaft flat.
D. Turn impeller
counterclockwise
when
facing it.
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