Pentair STA-RITE SE370 User manual

pentair.com
INSTALLATION AND
OPERATION MANUAL
SUBMERSIBLE EFFLUENT PUMP
4" HIGH-HEAD FILTERED
©2021 Pentair. All Rights Reserved. SE370 (06/15/2021)

SE370 (06/15/2021)2
TABLE OF CONTENTS
INTRODUCTION
Safety Instructions ..............................................................................................................................................................................3
Installation...........................................................................................................................................................................................4
Operation / Maintenance......................................................................................................................................................................4
Troubleshooting...................................................................................................................................................................................6
Warranty.............................................................................................................................................................................................. 7

SE370 (06/15/2021) 3
SAFETY INSTRUCTIONS
SAFETY SYMBOLS
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:
DANGER 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 that are
important but not related to hazards.
GENERAL SAFETY
 Carefully read and follow all safety instructions in this
manual and on the unit itself.
 Under certain conditions, submersible pumps can develop
extremely high pressure. Install a pressure relief valve
capable of passing entire pump flow at 75 PSI.
 Do not allow pump, piping, or any other system component
containing water to freeze. Freezing may damage system,
leading to injury or flooding. Allowing pump or system
components to freeze will void warranty.
 Can shock, burn or cause death. To avoiddangerous or fatal
electric shock hazard, use pump only in an effluent system.
DO NOT install pump in an open body of water ( a lake,
swimming pool, etc.).
 Install, ground and wire pump according to local and
Canadian Electrical Code or National Electrical Code
requirements that apply.
 Disconnect electrical power supply before installing or
servicing pump.
 Make sure motor nameplate voltage and frequency match
line voltage and frequency of power supply.
 Install pump according to all plumbing, pump and well code
requirements.
 Install an all leg disconnect switch in the power supply near
the pump.
 Motors are equipped with automatic thermal overload
protection which will open the circuit and stop the motor
when a thermal overload (excessive heating) exists.
When motor cools, overload will reset and motor will
restart automatically. This can cause the motor to start
unexpectedly and without warning.
 Inspect pump and motor for delivery damage. Report any
damage immediately to shipping carrier or to Sta-Rite
immediately.
 Have any installation, repair, or service work done by your
Sta-Rite dealer.
 Never run pump dry.
NOTE: Install pump in the effluent or pumping chamber of
vault — NOT in the sewage chamber. Pump is designed to
pump filtered effluent or clear water only. It is not a sewage
pump.
 During system operation, pump must be submerged at all
times.
 Pipe joint compound can cause cracking in plastics. Use
only teflon tape when sealing joints in plastic pipe.
 Warranty is void in the following conditions:
• Water is highly corrosive.
• If entrained gas or air present in water being pumped
reduce the flow and cause cavitation (which can damage
the pump).
• Pump has been operated with discharge valve closed
(severe internal damage will result).
CALIFORNIA PROPOSITION 65 WARNING:
This product and related accessories contain
chemicals known to the State of California to cause cancer,
birth defects or other reproductive harm.
ELECTRICAL SAFETY
DANGER 
When installing, operating, or servicing this pump, follow the
safety instructions listed below.
 Ground pump and motor in accordance with all codes
and ordinances that apply. All wiring must meet National
Electrical Code and Canadian Electrical Code (whichever
applies). Use copper ground wire at least as large as wires
carrying current to motor.
 Motor is supplied with copper ground wire. Splice to copper
conductor that matches motor wire size specified in Table
2. Use only copper wire for connections to pump.
 Permanently ground pump and motor before connecting
power cable to power supply. Connect ground wire to
approved ground first, then connect to equipment being
installed.
 Do not ground to a gas supply line.
 Float switches or any other approved motor control must
match motor input in full load amperes.
 For more information, contact your local code officials.

SE370 (06/15/2021) 4
TABLE 1: RECOMMENDED FUSING DATA
60 HZ/1 PHASE 2-WIRE CABLE)
MOTOR PART # HP VOLTS/HZ/
PHASE
MOTOR WINDING
RESISTANCE
OHMS
MAX LOAD AMPS LOCKED ROTOR
AMPS
FUSE SIZE STANDARD/
DUAL ELEMENT
27342A191 1/2 115/60/1 1.0–1.3 12 64.8 30/15
P42B0005A1-01 1/2 115/60/1 1.4-2.0 10.2 28 25/15
P42B0005A2-01 1/2 230/60/1 6.1-7.2 4.8 16 15/10
P42B0010A2-01 1230/60/1 4.2–5.2 8.2 23.5 20/15
P42B0015A2-01 1-1/2 230/60/1 1.8-2.4 10.5 43 30/20

2-Wire pumps have two power supply wires (Red/Black) and one
ground wire (Green).
1. Fasten power supply wire leads securely to pump discharge
section; leave 4-5" of slack in leads at this point. Securely
fasten leads to plastic pipe within 6" of the pump discharge
section.
2. Ground wire must be as large as wires supplying current
to motor. Consult current National Electrical Code or
Canadian Electrical Code (as applicable) and local codes for
grounding information.
3. Use only submersible power supply wires supplied by pump
manufacturer. When installing pump, secure supply wires
to discharge pipe with Scotch #33 electrical tape. DO NOT
damage pump wires.
NOTICE: To avoid dropping pump or damaging wires or
splices,
4. NEVER allow pump wires to support weight of pump.
EFFLUENT APPLICATIONS
Effluent applications must meet the following:
Risk of electrical shock. Do not remove cord and
strain relief. Do not connect conduit to pump.
1. Only qualified personnel should install the pump and
associated control equipment.
2. Vent sewage tank according to local code.
3. Do not install pump in any location classified as hazardous
by National Electrical Code, ANSI/NFPA 70-1984.
4. These pumps are intended for permanent connection only.
Provide strain relief at control box for power supply cord
connection to box. All control components must be UL
listed and suitable for end use application.
PUMP INSTALLATION
1. Make sure that pump and motor are free to rotate by turning
the shaft by hand.
2. To prevent dropping pump, lower it by the drop pipe, not
by the cables. The electrical cables will not hold the pump
weight.
3. Discharge outlet is 1-1/4" NPT threaded.
NOTICE: Pump discharge is left-hand thread into pump
shell. If installing external check valve, hold discharge with
pipe wrench to prevent loosening discharge in shell.
4. If pump is to be operated with an open discharge, a
discharge valve must be installed.ˆ Before startup, open
this valve about 1/3 open. Start pump. Slowly open valve
until the desired flow rate is reached. Final setting must be
within pump’s recommended operating range.
OPERATION
1. The pump must be submerged at all times during normal
operation. Do not run pump dry.
2. Make sure that the float switches are set so that the pump
stops before the pump runs dry or breaks suction. If
necessary, adjust float switches to achieve this.
3. The motor bearings are lubricated internally. No
maintenance is required or possible on the pump or the
motor.
INSTALLATION

SE370 (06/15/2021)5
OPERATION / MAINTENANCE
IMPORTANT ELECTRICAL GROUNDING INFORMATION



A. To reduce risk of electrical shock from metal parts of the
assembly other than the pump, bond together all metal parts
accessible at the tank top (including metal discharge pipe, metal
tank top, and the like). Use a metal bonding conductor at least
as large as the power cable conductors running down the well to
the pump's motor.
B. Clamp or weld (or both if necessary) this bonding conductor
to the grounding means provided with the pump, which will be
the equipment-grounding terminal, the grounding conductor
on the pump housing, or an equipment-grounding lead. The
equipmentgrounding lead, when provided, will be the conductor
having green insulation; it may also have one or more yellow
stripes.
C. Ground the pump, motor, and any metallic conduit that carries
power cable conductors. Ground these back to the service by
connecting a copper conductor from the pump, motor, and
conduit to the grounding
TABLE 2: POWER SUPPLY WIRE (CABLE) LENGTH = FEET

MOTOR PART # HP VOLTS 14 AWG 12 AWG 10 AWG 8 AWG 6 AWG 4 AWG 3 AWG 2 AWG 1 AWG 0 AWG
27342A191 1/2 115 99 158 387 247 603 921 1138 1403 1677 1893
P42B0005A1-01 1/2 115 107 171 273 432 672 1071 1346 1700 2142 2703
P42B0005A2-01 1/2 230 457 726 1158 1835 2855 4551 5721 7225 9102 11489
P42B0010A2-01 1230 267 425 678 1074 1671 2664 3349 4229 5328 6725
P42B0015A2-01 1-1/2 230 209 332 530 839 1305 2080 2615 3303 4161 5252
NOTE: SIZES GIVEN ARE FOR COPPER WIRE. FOR ALUMINUM WIRE GO TWO SIZES LARGER (I.E., IF TABLE LISTS #12 COPPER WIRE, USE #10 ALUMINUM WIRE.)
MOTOR INSULATION RESISTANCE READINGS

CONDITION OF MOTOR AND LEADS OHM VALUE MEGAOHM VALUE
New motor, without power cable 20,000,000 (or more) 20.0
Used motor, which can be reinstalled in tank 10,000,000 (or more) 10.0

Do not pull pump for these reasons:
New Motor
Motor in reasonably good condition
Motor which may be damaged or have damaged
power cable
2,000,000 (or more)
500,000 to 2,000,000
20,000 to 500,000
2.0
0.5–2.0
0.02–0.5
Pull pump; replace pump or cable:
Motor denitely damaged or with damaged power
cable Failed motor or power cable
10,000 to 20,000
Less than 10,000
0.01–0.02
0–0.01

SE370 (06/15/2021)6
TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE(S) CORRECTIVE ACTION
Motor will not start but fuses
do not blow. No voltage.
No voltage at disconnect switch. Replace blown fuses or bad cable, reset circuit breakers.
Electrical cable bad. Consult licensed electrician or serviceman.
Fuses blow or overload
protector trips when motor
starts.
Wrong size fuse, time delay fuse,
or circuit breaker.
Check fuse or circuit breaker size against chart, Page 2. Install correct
fuse, time delay fuse, or circuit breaker.
Wire size too small. Check wire size against chart, Page 3. Install correct size wire.
Low or high voltage.
Check that line voltage is within ±10% of nameplate rated voltage while
motor is running. If voltage variation is greater than ±10%, call power
company or local hydro authority to adjust voltage.
Pump or motor stuck or binding.
Check for locked shaft in pump. If necessary, pull pump (make all
possible above ground checks rst). If pump is locked, replace it. Clean
tank of all sand, lime, and solids before reinstalling pump.
Power supply wires or motor leads
grounded, shorted, or open. Consult licensed electrician or qualied serviceman.
Fuses blow or overload
protector trips when motor is
running.
Low or high voltage.
Check that line voltage is within ±10% of nameplate rated voltage while
motor is running. If voltage variation is greater than ±10%, call power
company or local hydro authority to adjust voltage.
Wire size too small. Check wire size against chart, Page 3. Install correct size wire.
High ambient (atmospheric)
temperature. Check wire size against chart, Page 3. Install correct size wire.
Pump starts too frequently.
Leaks in system. Check plumbing for leaks. Re-adjust or replace level switch.
Level switch. Check for defective switch or switch out of adjustment.
Check valves leaking. Make sure check valves are not leaking back. Replace check valves if
necessary.
Little or no water delivered.
Check valve stuck. Examine valve. If stuck, free valve.
Low voltage.
Check voltage at circuit breaker with pump running. Check incoming
wire size and power supply wire size against chart, Page 3. Install
larger wire from meter to circuit breaker. Install larger wire from circuit
breaker to pump. If necessary, have power company raise supply
voltage.
Plugged intake screen. Pull pump and check condition of screen. Clean or replace as necessary.
Check valve at pump discharge
stuck. Pull pump and examine check valve. Free check valve.
Worn impellers and diffusers. Make sure system is clear of obstructions and pump is in solid water and
operating normally. Replace pump.
Pump doesn’t develop enough
pressure (“head”).
Check pump curve against operating conditions. Replace pump with
“higher head” pump.
Plugged impellers. Pull pump. Replace pump.

SE370 (06/15/2021) 7
WARRANTY

All indicated Pentair trademarks and logos are property of Pentair. Third party registered and unregistered trademarks and logos are the property of their respective owners. Because we are
continuously improving our products and services, Pentair reserves the right to change specications without prior notice. Pentair is an equal opportunity employer.
©2021 Pentair. All Rights Reserved. SE370 (06/15/21)
293 Wright St
Delavan, WI 53115
PH: 1-888-782-7483
pentair.com