STA-RITE 300E Series User manual

Carefully read and follow all safety instructions in
this manual or on pump.
This is the safety alert symbol.
When you see this symbol on your pump or in this manual,
look for one of the following signal words and be alert to
the potential for personal injury.
warns about hazards that will cause serious
personal injury, death or major property damage if ignored.
warns about hazards that can cause serious
personal injury, death or major property damage if ignored.
warns about hazards that will or can cause
minor personal injury or property damage if ignored.
The word NOTICE indicates special instructions which are
important but not related to hazards.
1. Read these rules and instructions carefully. Failure to
follow them could lead to serious bodily injury and/or
property damage.
2. Check your local codes before installing. You must
comply with their rules.
3. Vent sewage or septic tank according to local codes.
4. Do not install pump in any location classified as
hazardous by National Electrical Code, ANSI/NFPA
70-1984.
Risk of electrical shock. Can burn
or kill. Do not lift pump by power cord. See “Cord Lift
Warning” on Page 5.
Hazardous voltage. Can shock,
burn, or cause death. During operation the pump is
in water. To avoid fatal shocks, proceed as follows if
pump needs servicing:
5A. Disconnect power to outlet box before unplugging
pump.
5B. Take extreme care when changing fuses. Do not stand
in water or put your finger in fuse socket.
5C. Do not modify cord and plug. When using cord and
plug, plug into a grounded outlet only. When wiring to
a system control, connect pump ground lead to system
ground.
6. Do not run pump dry. Dry running can overheat pump,
(causing burns to anyone handling it) and will void war-
ranty.
7. Pump normally runs hot. To avoid burns when servic-
ing pump, allow it to cool for 20 minutes after shut-
down before handling it.
8. In normal service, motor should not need oiling. Motor
has been filled at the factory with a special oil; when
overhauling, replace with new oil. Use only oil speci-
fied in parts list of this manual. Use of any other oil
could damage motor and will void warranty.
STA-RITE
OWNER'S MANUAL
Installation • Operation • Repair Parts
Submersible Solids Handling Pumps
Effluent 300E & 400E Series
Effluent High Temperature 300 HT Series
Sewage 500S Series
STA-RITE INDUSTRIES, INC., DELAVAN, WISCONSIN 53115
Printed in U.S.A. © 1998, Sta-Rite Industries, Inc. S323 (Rev. 7/2/98)
SAFETY INSTRUCTIONS

INSTALLATION
NOTICE: Install pump on a hard, level surface (cement,
asphalt, etc.). Never place pump directly on earth, clay or
gravel surfaces.
Piping
Piping must not be smaller than pump discharge.
When installed in a sewage system, pipe must be capable of
handling semi-solids of at least 2" diameter.
When installed in an effluent system, pipe must be capable
of handling semi-solids of at least 3/4" diameter.
The rate of flow in the discharge pipe must keep any solids
present in suspension in the fluid. To meet minimum flow
requirements (2 feet per second in discharge line), size pipe
as follows:
A Pipe Size Of: Will Handle a Flow Rate Of:
1-1/2" 12 GPM
2" 21 GPM
2-1/2" 30 GPM
3" 48 GPM
In a sewage system use a 2" check valve in pump discharge
to prevent backflow of liquid into sump basin. The check
valve should be a free flow valve that will easily pass solids.
Be sure check valve installation complies with local codes.
In an effluent system use a 1-1/2" check valve in pump dis-
charge to prevent backflow of liquid into sump basin. The
check valve should be a free flow valve that will easily pass
solids. Be sure check valve installation complies with local
codes.
NOTICE: For best performance of check valve when han-
dling solids, do not install it with discharge more than 45°
above the horizontal. Do not install check valve in a vertical
position as solids may settle in valve and prevent opening
on startup.
Drill a 3/16" hole in discharge pipe about 1–2" above pump
discharge connection (but below check valve) to prevent air-
locking the pump.
Electrical
Hazardous voltage. Can shock, burn,
or cause death. When installing, operating, or servicing
this pump, follow safety instructions listed below.
1. DO NOT splice the electrical power cord.
2. DO NOT allow electrical cord plug to be submerged.
3. DO NOT use extension cords. They are a fire hazard and
can reduce voltage sufficiently to prevent pumping
and/or damage motor.
4. DO NOT handle or service pump while it is connected to
power supply.
5. DO NOT remove grounding prong from plug or modify
plug. To protect against electrical shock, the power cord
is a three-wire conductor and includes a 3-prong ground-
ed plug. Plug pump into a 3-wire, grounded, grounding-
type receptacle. Connect pump according to NEC and
local codes.
For automatic operation, plug or wire pump into an auto-
matic float switch or duplex controller. Pump will run con-
tinuously when plugged directly into an electrical outlet.
Connect or wire pump to its own circuit with no other out-
lets or equipment in the circuit. Size fuses or circuit break-
ers according to chart below.
Risk of electrical shock and fire. Be
sure that power supply information (Voltage/
Hertz/Phase) on pump motor nameplate matches
incoming power supply exactly. Install pump
according to all electrical codes that apply.
Fuse or Dual Element
Circuit Time Delay
Model HP Voltage Breaker Amps Fuse Amps
300E 1/3 115 20 15
300E 1/3 230 15 10
400E 4/10 115 15 10
500S 4/10 115 20 15
500S 4/10 230 15 10
Operation and Installation
NOTICE: Do not allow pump to run in a dry sump. It will
void the warranty and may damage the pump.
An automatic overload protector in the motor will protect
motor from burning out due to overheating/overloading.
When motor cools down, overload protector will automati-
cally reset and start motor.
If overload trips frequently, check for cause. It could be a
stuck impeller, wrong/low voltage, or electrical failure in
motor. If an electrical failure in the motor is suspected, have
it serviced by a competent repairman.
Pump is permanently lubricated. No oiling or greasing is
required.
2

SERVICE
General
Hazardous voltage. Can shock, burn,
or cause death. Before removing pump from basin for
service, always disconnect electrical power to pump and
control switch.
After removing basin cover and necessary discharge piping,
lift pump out of basin.
Risk of electrical shock. Can burn or
kill. Do not lift pump by power cord. See “Cord Lift
Warning” on Page 5.
Place pump in an area where it can be cleaned thoroughly.
Remove all scale and deposits on the pump.
Submerge complete pump in a disinfectant solution
(chlorox or chlorine) for at least one hour before disassem-
bling pump.
The pump motor housing contains a special lubricating oil
which should be kept clean and free of water at all times.
NOTICE: Whenever motor housing is being removed for
service, remove oil and replace with new oil at reassembly.
Use only oil listed in parts list in this manual. When filling
with new oil, DO NOT overfill. Allow about 7/8" air space
from top of boss in housing for expansion of oil when pump
is operating.
Impeller and Seal Replacement
A. Impeller removal (See pump disassembly drawing):
1. Remove oil fill plugs and turn pump upside down to
drain oil.
2. Remove capscrews holding upper motor housing to
lower motor housing; lift off upper motor housing and
remove motor lead wires from connector to detach
upper housing from assembly. Lead wires are fitted
with quick connect terminals for this purpose..
3. Remove capscrews holding lower motor housing to
volute; lift off lower motor housing.
3
Oil fill plug
Upper motor
housing
Housing
capscrew
Power cord
connector
AA
Blk
Blk Grn
Rotor/Stator
Assembly
Lower
Motor
Housing
Stator
Capscrew
Volute
Pump Disassembly
(See Fig. 1)
410 0893
Seal Body
Ceramic Seat
Impeller
Pump Disassembly – 300/500 Series

4. Hold rotor shaft assembly and unscrew impeller by
turning it counter-clockwise; remove it.
If no more service is needed, reverse instructions
above to reassemble pump. Reattach motor lead wires
as shown in figure 1, fill with clean dielectric oil (Part
No. U197-8A), check oil level and replace fill plug.
Oil should cover motor windings (300/500 Series) or
top of motor can (400 Series).
B. Shaft seal replacement:
1. Follow instructions to remove impeller.
2. Remove stator capscrews and spacers. Lift off stator.
3. Remove ceramic seat ring from impeller and tap
body of seal out of lower motor housing.
4. Clean seat cavity thoroughly before replacing with
new seal.
NOTICE: Make sure that seal faces are clean; do not
scratch or damage new seal face during seal replace-
ment. Apply Permatex #2 or equivalent sparingly to
outside edge of seal body before installing seal in
lower motor housing.
5. Press new seal body into position in lower housing
cavity.
6. Press ceramic seat ring onto motor shaft. Impeller
will pull it into position.
7. Reassemble stator and tighten stator capscrews. Be
sure spacer is under capacitor to keep capacitor away
from oil in motor.
8. Reassemble impeller and pump (reverse instructions
1 through 4 in section A).
9. Reattach motor lead wires as shown in Figure 1.
10. Fill with clean dielectric oil (Part No. U197-8A),
check oil level and replace oil fill plug.
4
Short Divider
Either Black Wire
Either Black Wire
Green Wire
View A-A
(connected between
the two tallest
dividers)
409 0893
Figure 1
1050a 0797
Oil fill plug
Upper motor
housing
Housing
capscrew
Power cord
connector
AA
Blk
Blk
Grn
Rotor/Stator
Assembly
Lower Motor
Housing
Rotor/Stator
Capscrew
Volute
(See Fig. 1)
Seal Body
Ceramic Seat
Impeller
Pump Disassembly – 400 Series

Sudden Starts. If power is on to pump
when thermal overload resets, pump may start
without warning. If you are working on pump, you
may get an electrical shock or impeller may catch
fingers or tools. Disconnect power before servicing
pump.
5
A. Pump fails to operate: 1. Check to be sure that power cord is securely plugged into outlet or securely wired
into controller or switch box. Disconnect power to outlet before handling pump
or motor.
2. Check to be sure you have electrical power.
3. Check that liquid fluid level is high enough to activate switch or controller.
4. Check to be sure that 3/16” vent hole in discharge pipe is not plugged.
5. Check for blockage in pump inlet, impeller, check valve or discharge pipe.
6. Thermal overload may have tripped. Test start pump; if it starts and then stops
immediately, disconnect from power source for 30 minutes to allow motor to cool,
then reconnect to power source. Check for cause of overheating/overloading.
B. Pump fails to empty sump: 1. Be sure all valves in discharge valve are fully open.
2. Clean out discharge pipe and check valve.
3. Check for blockage in pump inlet or impeller.
4. Pump not sized properly. A higher capacity pump may be required.
C. Pump will not shut off: 1. Check switch or controller automatic floats for proper operation and location.
See installation instructions for switch/controller.
2. If pump is completely inoperative or continues to malfunction, consult your
local serviceman.
TROUBLES-REMEDIES
1. Attempting to lift or support pump by
power cord can damage cord and cord
connections.
2. Cord may pull apart, exposing bare wires
with possibility of fire or electrical
shock.
3. Lifting or supporting pump by power
cord will void warranty.
4. Use lifting ring or handle on top of pump
for all lifting/lowering of pump.
Disconnect power to pump before doing
any work on pump or attempting to
remove pump from sump
Risk of electrical shock.
Can burn or kill.
Do not lift pump by
power cord.
WARNING

6
7
8
9
6
10
11
12
13
4
3
2
1
6
5
411 0895
300/500 SERIES EXPLODED VIEW
PWE3B01-03 PWE3B02-03 PWS5C01-07 PWS5C02-05 PWS51C01-07
Key Part PWE3B01A-03 PWE3B02A-03 PHTS3B01-06 PHTSX3B01-06 PWS5C01A-07 PWS5C02A-05 PWS51C01A-07
No. Description Qty 1/3 HP 115 Volt 1/3 HP 230 Volt 1/3 HP 115 Volt 1/3 HP 115 Volt 4/10 HP 115V 4/10 HP 230V 4/10 HP 115V
1 Power Cord 1 PW17-122 PW17-218 PW17-226 § PW17-122 PW17-218 PW17-237
2 Cord Connector 1 PS17-46P PS17-46P PS17-46P § PS17-46P PS17-46P PS17-46P
3 Handle Ring 1 U97-102SS U97-102SS U97-102SS U97-102SS U97-102SS U97-102SS U97-102SS
4 1/4" NPT Plug 1 U78-57DV U78-57DV U78-57DV U78-57DV U78-57DV U78-57DV U78-57DV
5 Upper Motor Housing 1 PW18-22F PW18-22F PW18-22F PW18-22 PW18-22F PW18-22F PW18-22F
6 #10-32 x 3/4" Capscrew 6 U30-482SS U30-482SS U30-482SS U30-482SS U30-482SS U30-482SS U30-482SS
7 #10-32 x 3-1/8" Capscrew 2 U30-949ZP U30-949ZP U30-949ZP U30-949ZP U30-949ZP U30-949ZP U30-949ZP
8 Rotor/Stator Assembly 1 PS218-151 PS218-153 PS218-151 PS218-151 PS218-151 PS218-153 PS218-151
9 O-Ring 1 U9-339 U9-339 U9-339 U9-339 U9-339 U9-339 U9-339
10 Lower Motor Housing 1 PW18-23AA PW18-23AA PW18-23AA PW18-23AA PW18-23AA PW18-23AA PW18-23AA
11 Shaft Seal 1 U109-321SS U109-321SS U109-321SS U109-321SS U109-321SS U109-321SS U109-321SS
12 Impeller 1 PW5-5P PW5-5P PW5-5 PW5-5 PW5-11P PW5-11P PW5-11P
13 Volute 1 PW1-4 PW1-4 PW1-4 PW1-4 PW1-13 PW1-13 PW1-13
14 Capacitor 1 – – – – – – –
15 Spacer 2 – – – – – – –
16 Automatic Float Switch* 1 PW217-107B PW217-108B PW217-25B — PW217-107B PW217-108B PW217-107B
• Switch Cord Clamp* 1 CC0030-13 CC0030-13 CC0030-13 — CC0030-13 CC0030-13 CC0030-13
• #8-32 x 1/2” Capscrew* 1 U30-539SS U30-539SS U30-539SS — U30-539SS U30-539SS U30-539SS
• Dielectric Oil 1 U197-8A U197-8A U197-8A U197-8A U197-8A U197-8A U197-8A
• Not Illustrated * Models w/“A” suffix only. § Requires Replacement Cord, Part No. PW117-106.
REPAIR PARTS LIST
16

7
7
15
8
9
6
10
11
12
13
4
3
2
1
6
5
14
1050 0797
400 SERIES EXPLODED VIEW
PWE4C01A
Key Part PWE4C01
No. Description Qty 4/10 HP 115V
1 Power Cord 1 PW17-283
2 Cord Connector 1 PS17-46P
3 Handle Ring 1 U97-102SS
4 1/4" NPT Plug 1 U78-57DV
5 Upper Motor Housing 1 PW18-133
6 #10-32 x 3/4" Capscrew 6 U30-482SS
7 #10-32 x 3-1/8" Capscrew 2 U30-963ZP
8 Rotor/Stator Assembly 1 PW118-145
9 O-Ring 1 U9-339
10 Lower Motor Housing 1 PW18-134
11 Shaft Seal 1 U9-379SS
12 Impeller 1 PW5-16P
13 Volute 1 PW1-16
14 Capacitor 1 PS18-148
15 Spacer 2 U43-139
16 Automatic Float Switch* 1 PW217-107B
• Switch Cord Clamp* 1 CC0030-13
• #8-32 x 1/2” Capscrew* 1 U30-539SS
• Dielectric Oil 1 U197-8A
• Not Illustrated * Models w/“A” suffix only.
REPAIR PARTS LIST
16

8
LIMITED WARRANTY
Sta-Rite warrants to the original consumer of the products listed below, that they will be free from defects in material
and workmanship for the Warranty Period from the date of original installation or manufacture as noted.
Product Warranty Period
Water Systems Products – jet pumps, whichever occurs first:
small centrifugal pumps, submersible pumps 1 year from date of original installation, or
and related accessories 2 years from date of manufacture
Con-Aire®Tanks 5 years from date of original installation
Epoxy-Line Tanks 3 years from date of original installation
Sump/Sewage/Effluent Products 1 year from date of original installation, or
2 years from date of manufacture
Our warranty will not apply to any product that has been subject to negligence, misapplication, improper installation
or maintenance. In the event a three phase submersible motor is operated with single phase power through a phase
converter, or if three-leg ambient compensated, extra-quick trip overload relays of recommended size are not used,
our warranty is void.
Buyer’s only remedy and Sta-Rite’s only duty is to repair or replace defective products (at Sta-Rite’s choice). Buyer
agrees to pay all labor and shipping charges associated with this warranty and to request warranty service through
the installing dealer as soon as a problem is discovered. If warranty service is requested more than 30 days after the
Warranty Period has ended, it will not be honored.
STA-RITE SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL, OR CONTINGENT
DAMAGES WHATSOEVER.
THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS WAR-
RANTIES. IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL NOT EXTEND
BEYOND THE WARRANTY PERIOD PROVIDED HEREIN.
Certain states do not permit the exclusion or limitation of incidental or consequential damages or the placing of lim-
itations on the duration of an implied warranty, therefore, the limitations or exclusions herein may not apply. This
warranty sets forth specific legal rights and obligations, however, additional rights may exist, which may vary from
state to state.
Supersedes all previous publications.
Sta-Rite Industries, Inc. 293 Wright St., Delavan, WI 53115