Gorman-Rupp Pumps SE1-1-2A3 User Manual

OM−06488−01

August 15, 2011

INSTALLATION, OPERATION,

AND MAINTENANCE MANUAL

WITH PARTS LIST

SE SERIES PUMP

MODEL

SE1 1/2A3 115V 1P

THE GORMAN-RUPP COMPANY  MANSFIELD, OHIO

GORMAN-RUPP OF CANADA LIMITED  ST. THOMAS, ONTARIO, CANADA Printed in U.S.A.

www.grpumps.com

2011 The Gorman-Rupp Company

Register your new

Gorman-Rupp pump online at

www.grpumps.com

Valid serial number and e-mail address required.

RECORD YOUR PUMP MODEL AND SERIAL NUMBER

Please record your pump model and serial number in the
spaces provided below. Your Gorman-Rupp distributor
needs this information when you require parts or service.

Pump Model:

Serial Number:

TABLE OF CONTENTS

INTRODUCTION PAGE I − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SAFETY − SECTION A PAGE A − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INSTALLATION − SECTION B PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GENERAL INFORMATION PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Dimensions PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PREINSTALLATION INSPECTION PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PUMP SEAL PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LUBRICATION PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PUMP INSTALLATION PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Motor Specifications PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lifting PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Positioning the Pump PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Piping PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL CONNECTIONS PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field Wiring Connections (Incoming Power) PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Grounding Methods PAGE B − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Power Cable Connections PAGE B − 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control Box PAGE B − 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Motor Cable Grounding Test PAGE B − 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Liquid Level Devices PAGE B − 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

WIRING DIAGRAM PAGE B − 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATION − SECTION C PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GENERAL INFORMATION PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Performance PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Controls PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PUMP OPERATION PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Liquid Temperature and Overheating. PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Impeller Rotation PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STARTING, STOPPING, AND OPERATIONAL CHECKS PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . .

Starting And Stopping PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operational Checks PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LIQUID LEVEL PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COLD WEATHER PRESERVATION PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LUBRICATION PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Draining Oil PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Condition Of Oil PAGE C − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adding Oil PAGE C − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

i

TABLE OF CONTENTS

(continued)

TROUBLESHOOTING − SECTION D PAGE D − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Trouble Shooting Chart PAGE D − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL TESTING PAGE D − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Equipment PAGE D − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Motor And Motor Power Cable Continuity PAGE D − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Insulation Resistance PAGE D − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PUMP MAINTENANCE AND REPAIR − SECTION E PAGE E − 1. . . . . . . . . . . . . . . .

PERFORMANCE CURVE PAGE E − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PARTS LISTS:

Pump Model PAGE E − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PUMP END DISASSEMBLY PAGE E − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Strainer And Impeller Cover Removal PAGE E − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Draining Oil From Seal Cavity PAGE E − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Positioning Pump For Disassembly PAGE E − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Impeller Removal PAGE E − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Removal PAGE E − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PUMP END REASSEMBLY PAGE E − 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning And Inspection Of Pump Parts PAGE E − 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Installation PAGE E − 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Impeller Installation PAGE E − 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Impeller Clearance PAGE E − 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Strainer Installation PAGE E − 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MOTOR DISASSEMBLY PAGE E − 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Head And Power Cable Removal PAGE E − 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rotor Removal PAGE E − 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bearing Removal PAGE E − 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch Actuator Removal PAGE E − 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Stator Removal PAGE E − 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MOTOR REASSEMBLY PAGE E − 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Stator Installation PAGE E − 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch Actuator Installation PAGE E − 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bearing Installation PAGE E − 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rotor Installation PAGE E − 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Head And Power Cable Installation PAGE E − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FINAL ASSEMBLY PAGE E − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VACUUM/PRESSURE TESTING PAGE E − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Vacuum/Pressure Test Data PAGE E − 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LUBRICATION PAGE E − 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Cavity PAGE E − 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Motor Cavity PAGE E − 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ii

SE SERIES OM−06488

INTRODUCTION

Thank You for purchasing a Gorman-Rupp pump.
Read this manual carefully to learn how to safely

install and operate your pump. Failure to do so
could result in personal injury or damage to the
pump.

This is an SE Series submersible pump. The basic
material of construction is cast iron, with stainless
steel hardware and fittings. The pump is light
weight and portable, making it ideally suited to
many domestic and industrial applications where
low capacity dewatering or irrigation is required.
The pump is powered by an integral, thermally­protected electric motor which is not explosion­proof. The pump may be operated fully or partially
submerged. Do not operate the pump in a hazard­ous atmosphere.

All repairs to the pump motor must be performed
by a Gorman-Rupp authorized submersible repair
facility or the factory. Any repairs to the motor as­sembly performed by the customer or an unautho­rized repair facility negates the warranty.

Gorman-Rupp of Canada Limited

70 Burwell Road

St. Thomas, Ontario N5P 3R7

Phone: (519) 631−2870

The following are used to alert maintenance per­sonnel to procedures which require special atten­tion, to those which could damage equipment, and
to those which could be dangerous to personnel:

Immediate hazards which WILL result in
severe personal injury or death. These
instructions describe the procedure re­quired and the injury which will result
from failure to follow the procedure.

Because pump installations are seldom identical,
this manual cannot possibly provide detailed in­structions and precautions for every aspect of
each specific application. Therefore, it is the re­sponsibility of the owner/installer of the pump to
ensure that applications not addressed in this
manual are performed only after establishing that
neither operator safety nor pump integrity are com­promised by the installation. Pumps and related
equipment must be installed and operated ac­cording to all national, local and industry stan­dards.

If there are any questions regarding the pump or
its application which are not covered in this man­ual or in other literature accompanying this unit,
please contact your Gorman-Rupp distributor, or
The Gorman-Rupp Company:

The Gorman-Rupp Company

P.O. Box 1217

Mansfield, Ohio 44901−1217

Phone: (419) 755−1011

or:

Hazards or unsafe practices which
COULD result in severe personal injury
or death. These instructions describe
the procedure required and the injury
which could result from failure to follow
the procedure.

Hazards or unsafe practices which COULD
result in minor personal injury or product
or property damage. These instructions
describe the requirements and the possi­ble damage which could result from failure
to follow the procedure.

NOTE

Instructions to aid in installation, operation, and
maintenance or which clarify a procedure.

PAGE I − 1INTRODUCTION

SE SERIES OM−06488

SAFETY − SECTION A

This information applies to SE Series
submersible motor driven pumps.

Because pump installations are seldom
identical, this manual cannot possibly
provide detailed instructions and pre­cautions for each specific application.
Therefore, it is the owner/installer’s re­sponsibility to ensure that applications
not addressed in this manual are per­formed only after establishing that nei­ther operator safety nor pump integrity
are compromised by the installation.

Before attempting to open or service the
pump:

1. Familiarize yourself with this man­ual.

2. Make certain the control box or
switch is in the OFF or STOP posi­tion, or that the power supply to the
control box has been otherwise cut
off and locked out to ensure that
the pump will remain inoperative.

3. Allow the pump to completely cool
if overheated.

5. Close the discharge valve (if
used).

If the power cable is wired into an op­tional manual starting switch or control
box, make sure that the enclosure is
grounded. See Section B for recom­mended grounds.

The electrical power used to operate
this pump is high enough to cause inju­ry or death. Make certain the control box
or switch is in the OFF or STOP position,
or that the power supply to the control
box has been otherwise cut off and
locked out. Tag electrical circuits to pre­vent accidental start-up.

The electrical power used to operate
this pump is high enough to cause inju­ry or death. Obtain the services of a
qualified electrician to make all electri­cal connections.

This pump is not designed to pump vol­atile, explosive, or flammable materials.
Do not attempt to pump any liquids for
which you pump is not approved, or
which may damage the pump or endan­ger personnel as a result of pump fail­ure. Consult the factory for specific ap­plication data.

SAFETY

Never attempt to alter the length or re­pair any power cable with a splice. The
pump motor and cable must be com­pletely waterproof. Injury or death may
result from alterations.

All electrical connections must be in ac­cordance with The National Electric
Code and all local codes. If there is a

PAGE A − 1

OM−064988 SE SERIES

conflict between the instructions pro­vided and N.E.C. Specifications, N.E.C.
Specifications shall take precedence.
All electrical equipment supplied with
this pump was in conformance with
N.E.C. requirements in effect on the
date of manufacture. Failure to follow

Obtain the services of a qualified elec­trician to troubleshoot, test and/or ser­vice the electrical components of this
pump.

applicable specifications, or substitu­tion of electrical parts not supplied or
approved by the manufacturer, can re­sult in severe injury or death and void
warranty.

Do not attempt to lift the pump by the
motor power cable or discharge hose.
Attach proper lifting equipment to the
lifting device fitted to the pump.

After the pump has been installed, make
certain that the pump and all piping or
hose connections are secure before op­eration.

Pumps and related equipment must be
installed and operated according to all na­tional, local and industry standards.

PAGE A − 2 SAFETY

OM−06488 SE SERIES

INSTALLATION − SECTION B

GENERAL INFORMATION

Review all SAFETY information in Section A.

Since pump installations are seldom identical, this
section is intended only to summarize general rec­ommendations and practices required to inspect,
position, and arrange the pump and piping. If there
are any questions concerning your specific instal­lation, contact your Gorman-Rupp distributor or
the Gorman-Rupp Company.

Nuts, bolts and screws used on this pump

OUTLINE DRAWING

are metric and do not match standard SAE
measurement threads. If any threaded
hardware is replaced, it must be replaced
with metric type. Attempting to force in a
fastener with SAE threads will damage the
mating threads. An optional discharge
adaptor is available to convert the metric
pipe threads in the discharge flange to the
SAE threads.

Pump Dimensions

See Figure B−1 for the approximate physical di­mensions of this pump.

Figure B−1. Pump Model SE1 1/2A3 115V 1P

PREINSTALLATION INSPECTION

The pump assembly was inspected and tested be­fore shipment from the factory. Before installation,
check for damage which may have occurred dur­ing shipment. Check as follows:

a. Inspect the pump assembly for cracks, dents,

damaged threads, and other obvious dam­age.

b. Check for and tighten loose attaching hard-

ware. Since gaskets tend to shrink after dry-

PAGE B − 1INSTALLATION

SE SERIES

OM−06488

ing, check for and tighten loose hardware at
the mating surfaces.

c. Inspect the power cable for cuts or any other

obvious damage.

d. Check that amperes, phase, voltage and

hertz indicated on the name plate match the
ratings on the control box and incoming pow­er.

e. Carefully read all tags, decals, and markings

on the pump, and perform all duties indicated.

f. Check for oil leaks. If there is any indication of

an oil leak, see LUBRICATION at the end of
this manual.

g. If the pump has been stored for more than 12

months, some of the components or lubri­cants may have exceeded their maximum
shelf life. These must be inspected or re-
placed to ensure maximum pump service.

If the maximum shelf life has been exceed, or if
anything appears to be abnormal, contact
your Gorman-Rupp distributor or the factory
to determine the repair or updating policy. Do
not put the pump into service until appropri­ate action has been taken.

PUMP SEAL

The pump is equipped with one double-faced seal
assembly. It is designed to prevent the liquid being

pumped from entering the lubrication cavity at the
impeller end, and to prevent moisture or lubrication
oil from entering the motor housing cavity at the
motor end.

The seal is lubricated by premium quality submers­ible pump oil.

LUBRICATION

The pump utilizes one lubrication cavity, located
between the pump casing and the motor housing.
It is filled with premium quality submersible pump
oil which lubricates the pump seal. The motor oper­ates in and is cooled by air, therefore it requires no
lubrication.

The pump was fully lubricated when shipped from
the factory. However, lubrication levels must be

checked before installing the pump (see LU­BRICATION in Section E, MAINTENANCE AND
REPAIR). If the oil level is abnormally low, deter-

mine the cause before putting the pump into ser­vice.

Refer to Table B-2 for oil capacity and position for
filling the seal cavity in each pump. Refer to LU-
BRICATION, Section E for lubrication specifica­tions and intervals.

PUMP INSTALLATION

Pump Motor Specifications

See Table B-1 for pump specifications.

Table B-1. Pump Specifications

Model Voltage/

Phase

SE1 1/2A 115/1 NO 1/3 HP 3420 5.4 4.0 29.5

Pump

Model

PAGE B − 2 INSTALLATION

Voltage/

Phase

115/1SE1 1/2A 7 (0,2)50 (23) 6 (3) HORIZONTAL

Liquid

Level

Control

Pump

Pump

HP/
KW

Table B-2. Additional Specifications

Approximate

Weight − Lbs. (kg)

Motor
Speed
(RPM)

50 Ft. Cable

Full

Load

Amperes

Seal

Cavity

No

Load

Amperes

Oil Capacity

Ounces (Liters)

Locked

Amperes

Motor

Cavity

−−−

Rotor

Discharge

Size

(NPT)

1 1/2 INCH
w/BARBED

ADAPTOR

Seal Cavity

Filling

Position

(H)orizontal

OM−06488 SE SERIES

When installing or servicing the pump
or controls, follow all requirements for
the installation of wiring or electrical
equipment as outlined in the National
Electric Code. Follow all safety require­ments. Failure to observe these require­ments could result in injury or death to
personnel.

NOTE

Refer to the performance curve in Section E when
determining the most efficient piping installation.

The recommended maximum submergence
depth is 23 feet. Greater depths could result in
damage to the pump

Lifting

Use lifting equipment with a capacity of at least
five times the weight of the pump, including the

weight of the cable, if applicable, and any options
or customer-installed accessories. Discharge hose
or piping must be removed before attempting to lift
the pump.

Refer to Table B−2 for the approximate maximum
weight for each pump.

Do not attempt to lift the pump by the
motor power cable or the piping. Attach
proper lifting equipment or a rope to the
lifting device fitted to the pump.

Positioning the Pump

The pump is designed to operate fully or partially
submerged. The rotating parts are oil lubricated,
and the motor is cooled by a constant flow of liquid
or air discharged through internal passages.

The pump will operate if positioned on its side, but
this is not recommended because the motor
torque could cause the pump to roll during opera­tion.

The pump should be independently secured and
supported by the lifting device fitted on the pump.
If the application involves a lot of debris, protect the
pump from excessive wear and clogging by sus­pending it in a perforated barrel or culvert pipe. If
the bottom is heavily sludge-covered, rest the
pump on support blocks or suspend it from a raft
or similar device near the surface of the liquid. See
Figure B−2 for typical pump installations.

All liquid entering the pump must pass through a
strainer screen. Any spherical solids which pass
through the screen will pass through the pump.

PAGE B − 3INSTALLATION

SE SERIES

OM−06488

BY BAIL IN PERFORATED CULVERT PIPE ON SUPPORTS

Figure B−2. Typical Pump Installations

Piping

No suction piping is required in a standard installa­tion.

S Series pumps are provided with a suction strain­er to prevent large solids from clogging the impel­ler.

To determine the size of the discharge connection,
see Table B−1, Pump Specifications. Either
hose or rigid pipe may be used. To facilitate mobil­ity and maintenance, it is recommended that the
discharge line be fitted with a quick disconnect fit­ting near the pump. The discharge line must be in­dependently supported to avoid strain and vibra­tion on the pump.

Either hose or rigid pipe may be used to make dis­charge connections. For maximum pumping ca­pacity, keep the line as short and straight as pos­sible. Elbows and fittings used in discharge lines
increase friction loss, minimize their use.

It is recommended that a check valve or throttling
valve be installed in the discharge line to control si­phoning or back flow when the pump is shut off.

ELECTRICAL CONNECTIONS

Install and operate this pump in accor­dance with the National Electrical Code
and all local codes. Have a qualified
electrician perform all checks and con­nections in this section.

Never attempt to alter the length of the
pump motor cable or to repair it with a
splice. The power cable and pump mo­tor must be kept completely waterproof.
Serious damage to the pump and injury
or death to personnel can result from
any alteration to the cable.

Field Wiring Connections (Incoming Power)

The pump is designed to operate with a 115 volt,
1 phase, 60 hertz power supply. The voltage avail­able at the motor must be within the indicated
range in Table B−3.

PAGE B − 4 INSTALLATION

OM−06488 SE SERIES

To calculate the voltage available at the motor, pro­ceed as follows:

a. Measure the voltage while the pump is oper-

ating at full capacity. See wiring diagrams at
the end of this section.

b. Next, subtract the motor cable voltage drop

(see Table B-5, Pump Power Cable Specifi-
cations).

c. Do not continue to operate the pump if this

voltage is not within the recommended limits.
Obtain the services of a qualified electrician to
determine the correct field wiring size and oth­er details to ensure an adequate voltage sup­ply to the pump.

Table B-3. Pump Voltage Requirements

NOMINAL

VOLTAGE

PHASE

1115 110 120

MINIMUM

VOLTAGE

MAXIMUM

VOLTAGE

Grounding Methods

The power cable will be wired into an optional
manual switch or control box, ground the enclo­sure before installing the wiring. In any of these
cases, the electrical circuit must be grounded to a
properly imbedded electrode.

The material used for the electrode must be an ex­cellent conductor of electricity, such as copper. If
iron or steel is used, it must be galvanized or other­wise metal plated to resist corrosion. Do not coat
the electrode with any material of poor conductiv­ity, such as paint or plastic.

The electrode must conform to the recommenda­tions of N.E.C. ARTICLE 250. Follow all installation
requirements of the N.E.C., and all applicable local
codes. See Figure B−3 for some suggested
grounding methods.

a) PLATE ELECTRODE b) DRIVEN ELECTRODE c) BURIED ELECTRODE

SOIL

1/4 INCH (6,4 MM)
STEEL PLATE 2 SQ.
FEET (1858,1 SQ. CM)
SURFACE AREA
(MINIMUM)

Figure B−3. Suggested Grounding Methods

a. Plate Electrode: An iron or steel plate, 1/4

inch (6,4 mm) thick, completely impeded in
the ground. The plate must present a surface
area of at least 2 square feet (1858,1 sq. cm.).

b. Driven Electrode: A rod or pipe, 3/4 inch

(19,1 mm) in diameter minimum, 8 feet (2,4 m)
long, completely driven into the ground.

c. Buried electrode: If rock or stone prevents

embedding the full 8 foot (2,4 m) length of the
ground rod, bury it horizontally in a trench.

SOIL

3/4 INCH (19,1
MM) NOMINAL
DIAMETER
(MINIMUM)

8 FEET
(2,4 M)

Space the ground rod or plates at least 6 feet
(1,8) from any other electrode or ground rod,
such as those used for signal circuits, radio
grounds, lightning rods, etc.

The earth surrounding the ground rod or plate
must contain enough moisture to make a
good electrical connection. In dry or sandy
areas, pour water around the rod, or consult
qualified personnel to devise a method of im­proving the connections.

SOIL

3/4 INCH (19,1 MM)
NOMINAL DIAMETER
(MINIMUM) 8 FEET
(2,4 M) LONG

ROCK

PAGE B − 5INSTALLATION