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Replacement Parts – ST33APP, ST33APC
KEY QTY.
ST33APP ST33APC
NO. DESCRIPTION REQ.
1 Screw (motor) 2 U30-932ZP U30-932ZP
2 Shaft 1 RP0005257 RP0005257
3 Column 1 RP0005246A S15-37SS
4 Volute (Pump Body) 1 PS1-25P S1-31EB
5 Impeller 1 PS5-21P PS5-21P
6 Base Plate 1 PS4-17P PS4-17P
7 Screw (base plate) 8 U30-934ZP U30-539SS
8 Float 1 FT0013-63 FT0013-63
9 Set Screw 1 SC004-116 U30-946PH
10 Float Rod Guide 1 RP0005249 RP0005249
11 Screw 1 U30-929ZP U30-929ZP
12 Float Rod 1 RP005168S RP005168S
13 Float Stop 2 RP0005248 RP0005248
14 Automatic Switch 1 FP0018-7D FP0018-7D
(float actuated)
14. Run pump through one cycle to check float switch oper-
ation.
Risk of sudden starts. The pump
motor is equipped with automatic resetting ther-
mal protector and may restart unexpectedly.
If protector trips, motor may be overloading. Check for the
following problems:
1. Not enough back pressure in discharge pipe.
2. Voltage too high or too low.
3. Wires to motor too small.
4. Motor incorrectly connected to power supply wires.
5. Defective motor.
Operation
Risk of electrical shock. Do not touch
sump pump, pump motor, water, or discharge pip-
ing when pump is connected to electrical power.
Always disconnect pump cord (power) before han-
dling.
1. Plug unit into 115 V. outlet. It is strongly recommended
that this unit be plugged into a Class A 15 Amp GFCI
(Ground Fault Circuit Interrupter). Consult your local
electrician for information and availability.
2. Fill sump pit with water, pump will start automatically
when lower rod stop actuates switch lever arm. When
upper rod stop actuates switch lever arm, pump will
stop.
NOTICE: Do not allow pump to run dry.
3. The motor is equipped with an automatic reset thermal
protector to protect unit from overheating. When motor
has cooled sufficiently, switch will reset automatically
and restart motor. Repeated tripping could be caused by
low voltage, long extension cords, clogged impeller,
very low head or lift, etc. Cycling of protector will
cause eventual motor burnout.
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