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General
Risk of electric shock. When servicing
pump always disconnect power to electrical outlet
and remove pump electric cord from outlet.
1. If pump does not operate:
a. Check for loose plug at electric outlet.
b. Check for blown fuses or tripped circuit breakers at
fuse box/circuit breaker box.
c. Be sure nothing interferes with action of automatic
float switch.
d. If a, b, and c above check OK, plug in a light that you
know works. If it lights, take your pump to Sears for
service. If it doesn't light, the electrical circuit is faulty;
consult a licensed electrician.
2. Pump starts, but blows fuses/trips circuit breakers:
After disconnecting power to pump, remove it from
sump. Remove the plate from the bottom of the pump
and make sure that the impeller turns freely. Remove any
debris obstructing impeller. If pump still does not oper-
ate correctly, return it to your nearest Sears Service
Department for repairs.
3. Pump runs, but does not empty sump:
a. Clean pump intake screen.
b. Water may be entering sump faster than the pump can
discharge it.
c. Be sure vertical distance from pump discharge outlet
to discharge pipe outlet does not exceed specifications.
See chart below.
d. Be sure discharge pipe is not plugged or frozen.
e. Be sure check valve is operating correctly.
Risk of electric shock. Unplug pump be-
fore attempting to service or remove any component.
1.The motor in the unit is sealed in oil. No additional lubri-
cation is necessary.
2.NOTICE: Disassembly of the motor assembly will void
warranty. It might also cause internal leakage and damage
to the unit. If motor fails, replace entire pump.
3.Keep inlet screen clean and free of all foreign objects.
Stock
Maximum
Number
HP
Amps
30455
1/4
8.5
30461
1/3
13.0
30469
1/3
13.0
SERVICE
SPECIFICATIONS
Dimensions in inches (mm)
Length
Width
8-1/2"(216)
8-1/2"(216)
9"(229)
6-1/2"(165) 11-1/2"(292)
9"(229)
6-1/2"(165) 11-1/2"(292)
Pump Cleaning
1.NOTICE: Attempting to disassemble motor will void war-
ranty.
2.To clean impeller, remove eight screws holding baseplate
to motor assembly. Clean/replace impeller as necessary.
To remove impeller, unscrew it from motor shaft.
3.Re-install baseplate and screws.
FLOAT SWITCH REPLACEMENT
(Models 390.304551 and 390.304611;
For Model 390.304691, see Page 7)
NOTICE: Float must be able to swing through its complete
arc without interference from sidewall of sump, plumbing
or any other object.
1. Unplug pump power cord from receptacle.
2. Remove tether clamp screw and slide cord from clamp.
Unscrew tee-handle from pump body.
3. Insert new cord in tether clamp in same location on cord
with respect to float. Install tee-handle in pump and
tighten.
4. Tighten tether clamp screw.
5. Check sump pump operation by filling sump with water
and observing operation through one complete cycle.
Failure to check installation with water
in sump can lead to improper operation, premature
pump failure and flooding.
GPM (L/min.) at Vertical Pumping Distance in Feet (M)
Height
5'(1.6)
9-3/4"(248)
38(144)
27(102)
50(189)
41(155)
50(189)
41(155)
5
10'(3)
15'(4.6)
18'(5.5)
11(41.6)
–
28(106)
15(57)
28(106)
15(57)
20'(6.1)
–
3(11.4)
3(11.4)
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