STA-RITE 10DOM05121 User manual

OWNER’S MANUAL
4” Submersible Pump
4133 0292
©2003, Sta-Rite Industries, Inc. 253P4720 (Rev. 2/11/03)
293 Wright Street, Delavan, WI 53115
Models 10DOM05121,
20D0M05121, 30DOM05121
Installation/Operation/Parts
For further operating, installation, or maintenance assistance:
Call 1-262-728-5551

2
READ AND FOLLOW
SAFETY INSTRUCTIONS!
This is the safety alert symbol. When you see this symbol
on your pump or in this manual, look for one of the fol-
lowing signal words and be alert to the potential for personal
injury.
warns about hazards that will cause serious per-
sonal injury, death or major property damage if ignored.
warns about hazards that can cause serious per-
sonal 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 label NOTICE indicates special instructions which are
important but not related to hazards.
Carefully read and follow all safety instructions in this manual
and on pump.
Hazardous pressure. 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 compo-
nent containing water to freeze. Freezing may damage
system, leading to injury or flooding. Allowing pump or system
components to freeze will void warranty.
Hazardous voltage. Can shock, burn or cause
death. To avoid dangerous 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 pump nameplate voltage and frequency match
line voltage and frequency of power supply.
1. Install pump according to all plumbing, pump and well
code requirements.
2. Install an all leg disconnect switch in the power supply
near the pump.
3. Two-wire 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 rest and motor will
restart automatically. This can cause the pump to start
unexpectedly and without warning.
GENERAL
Inspect pump for delivery damage. Report any damage to ship-
ping carrier or to Sta-Rite immediately.
Have any installation, repair, or service work done by your
Sta-Rite dealer.
Never run pump dry.
LIMITED WARRANTY
Sta-Rite warrants to the original consumer of the products listed below, that they will be free from defects in material and work-
manship for the Warranty Period from the date of original installation or manufacture as noted.
Product Warranty Period
4” Submersible Pump Products 1 year
Our warranty will not apply to any product that has been subject to negligence, misapplication, improper installation or main-
tenance. 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 WARRANTIES. IMPLIED WAR-
RANTIES, 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 limitations on
the duration of an implied warranty, therefore, the limitations or exclusions herein may not apply. This warranty sets forth spe-
cific 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

3
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 or connecting
pipe to thermoplastic pumps.
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).
ELECTRICAL
Wiring/Grounding
Hazardous voltage. Can shock, burn, or cause
death. Permanently ground pump, motor and control box
before connecting power supply to motor.
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 pump.
Pump is supplied with copper ground wire. Use only copper
wire for connections to pump.
Permanently ground pump 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.
Installation Wiring Instructions
Pump has two power supply wires (Red/Black) and one ground
wire (Green).
Fasten power supply wire leads securely to control panel;
leave 4-5" of slack in leads at this point. Securely fasten leads
to plastic pipe within 6" of the pump discharge section.
NOTICE: To avoid dropping pump or damaging wires or
splices, NEVER allow pump wires to support weight of pump.
EFFLUENT APPLICATIONS
Pumps designed and tested for effluent applications must meet
the following:
Risk of electrical shock. Do not remove or alter
cord. 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 haz-
ardous by National Electrical Code, ANSI/NFPA 70-1984.
4. These pumps are intended for permanent connection only.
Provide strain relief at control panel for power supply cord
connection to box. All control components must be UL
listed and suitable for end use application.
5. Do not pump flammable liquids, strong caustics, or strong
acids with this pump.
PUMP INSTALLATION
1. To prevent dropping pump, lower it by the drop pipe, not
by the cables. The electrical cables will not hold the pump
weight.
2. Discharge outlet is 1-1/4" NPT threaded.
NOTICE: If installing external check valve, hold discharge
with pipe wrench to prevent loosening discharge in shell.
3. If pump is to be operated with an open discharge, a dis-
charge valve must be installed. 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 with-
in 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 neces-
sary, adjust float switches to achieve this.
3. The motor bearings are lubricated internally. No mainte-
nance is required or possible on the pump.
Submersible
Pump
3" pipe
Figure 1: Insert a 3” PVC pipe in the bottom of the
motor to raise the pump in the tank.
Total Dynamic in Feet (M)
Flow in USGPM (LPM)
0
(0)
10
(38)
20
(76)
30
(114)
0(0)
150(46)
200(61)
250(76)
100(30)
50(15)
20 GPM
40
(151)
30 GPM
10 GPM
Figure 2: Performance in Feet of Head at Gallons per
Minute (M@LPM)

4
PROBLEM CHECK CORRECTIVE ACTION
Pump will not start but fuses do not blow
No voltage. No voltage at control panel. Replace blown fuses or bad cable.
Electrical cable bad. Consult licensed electrician or serviceman.
Control panel incorrectly wired. Reconnect control panel correctly.
Fuses blow or overload protector trips when motor starts
Wrong size fuse or wrong Check fuse size against chart, above. Install correct fuse or time delay fuse.
size time delay fuse.
Low or high voltage. Check that line voltage is within ±10% of nameplate If voltage variation is greater than ±10%, call power
rated voltage while motor is running. company or local hydro authority to adjust voltage.
Power supply wire leads Check control panel wiring diagram against incoming Reconnect leads to match wiring diagram in control
not correctly connected power hookup. Check power supply wire color coding. panel cover. Reconnect power supply wires so wire
to control panel. color code matches motor lead color code.
Broken wire in Examine all connections and wiring in control panel. Disconnect power and repair or replace faulty wire.
control panel.
Pump stuck or binding. Check for locked shaft in pump. If necessary, pull pump (make all possible above
ground checks first). If pump is locked, replace it.
Clean tank of all sand or lime, or solids before
reinstalling pump.
Power supply wires or Consult licensed electrician or qualified serviceman. Have a qualified serviceman or electrician make
pump leads grounded, necessary cable repairs..
shorted, or open.
Fuses blow or overload protector trips when motor is running
Low or high voltage. Check that line voltage is within ±10% of rated If voltage variation is more than ±10%, call power
nameplate voltage while motor is running. company to adjust voltage.
High ambient (atmospheric) Check temperature of tank Protect tank from direct sunlight.
temperature.
Pump starts too frequently
Leaks in system. Check plumbing for leaks.
Level switch. Check for defective switch or switch out of adjustment. Re-adjust or replace level switch.
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; if installed backwards, reverse it.
or installed backwards
Low voltage. Check voltage at control panel with pump running. Install larger wire from meter to control panel.
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 Pull pump and examine check valve. Free check valve.
discharge stuck.
Pump doesn’t develop Check pump curve against operating conditions. Replace pump with “higher head” pump.
enough pressure (“head”).
TROUBLESHOOTING GUIDE
Table 1: Recommended Fusing Data
60 Hz/1 Phase 2-Wire Cable
Max Locked Fuse Size
Voltz/Hz/ Load Rotor Standard/
Model HP Phase Amps Amps Dual Element
10DOM05121 1/2 115/60/1 11.0 30.0 15
20DOM05121 1/2 115/60/1 9.5 30.0 15
30DOM05121 1/2 115/60/1 9.5 30.0 15