GORMAN-RUPP PUMPS S Series Application guide

OM-07264-07

February 14, 2020

GORMAN‐RUPP PUMPS

www.grpumps.com

e2020 Gorman‐Rupp Pumps Printed in U.S.A.

INSTALLATION, OPERATION,

AND MAINTENANCE MANUAL

WITH PARTS LIST

S SERIES

SUBMERSIBLE PUMP

MODEL

S3A1 230V 1P

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 Model Designation PAGE B - 1...............................................

PREINSTALLATION INSPECTION PAGE B - 1............................................

PUMP SEAL PAGE B - 1..............................................................

LUBRICATION PAGE B - 1.............................................................

PUMP INSTALLATION PAGE B - 2......................................................

Pump Motor Specifications PAGE B - 2..............................................

Pump Dimensions PAGE B - 2.....................................................

Lifting PAGE B - 3.................................................................

Positioning of Pump PAGE B - 3....................................................

Piping PAGE B - 4................................................................

ELECTRICAL CONNECTIONS PAGE B - 4...............................................

Control Box Installation PAGE B - 5.................................................

Dual Voltage Usage PAGE B - 5....................................................

Field Wiring Connections (Incoming Power) PAGE B - 5...............................

Grounding Methods PAGE B - 6....................................................

Pump Power Cable Connections PAGE B - 7.........................................

Control Box Specifications PAGE B - 8..............................................

Motor Cable Grounding Test PAGE B - 8.............................................

Liquid Level Devices PAGE B - 8....................................................

WIRING DIAGRAMS PAGE B - 10.......................................................

OPERATION - SECTION C PAGE C - 1......................................

PRIMING PAGE C - 1.................................................................

Hand Primers PAGE C - 1..........................................................

STARTING PAGE C - 1................................................................

OPERATION PAGE C - 2..............................................................

Leakage PAGE C - 2..............................................................

Liquid Temperature And Overheating PAGE C - 2.....................................

Strainer Check PAGE C - 2.........................................................

Pump Vacuum Check PAGE C - 2..................................................

STOPPING PAGE C - 2................................................................

Cold Weather Preservation PAGE C - 2..............................................

BEARING TEMPERATURE CHECK PAGE C - 3..........................................

TROUBLESHOOTING - SECTION D PAGE D - 1..............................

PREVENTIVE MAINTENANCE PAGE D - 3...............................................

TABLE OF CONTENTS

(continued)

PUMP MAINTENANCE AND REPAIR ‐ SECTION E PAGE E - 1.................

STANDARD PERFORMANCE CURVE PAGE E - 1........................................

PARTS LISTS:

Pump Model PAGE E - 3..........................................................

Terminal Housing and Cable Assembly PAGE E - 5...................................

PUMP END DISASSEMBLY PAGE E - 6.................................................

Strainer Removal PAGE E - 7.......................................................

Draining Oil From Seal Cavity PAGE E - 7............................................

Draining Oil From Motor Cavity PAGE E - 7..........................................

Positioning Pump For Disassembly PAGE E - 7.......................................

Suction Head Removal PAGE E - 7.................................................

Impeller Removal PAGE E - 7......................................................

Diffuser Removal PAGE E - 8.......................................................

Seal Removal PAGE E - 8..........................................................

PUMP END REASSEMBLY PAGE E - 8..................................................

Cleaning and Inspection of Pump Parts PAGE E - 8...................................

Seal Installation PAGE E - 10........................................................

Diffuser Installation PAGE E - 10.....................................................

Impeller Installation PAGE E - 11.....................................................

Strainer Plate and Suction Head Installation PAGE E - 11...............................

Impeller Clearance PAGE E - 11.....................................................

Strainer Installation PAGE E - 11.....................................................

MOTOR DISASSEMBLY PAGE E - 12....................................................

Terminal Housing and Power Cable Removal and Disassembly PAGE E - 12..............

Intermediate and Rotor Disassembly PAGE E - 13.....................................

Bearing Removal PAGE E - 13.......................................................

Stator Removal PAGE E - 13........................................................

Relief Valve PAGE E - 14............................................................

Hoisting Bail PAGE E - 14...........................................................

MOTOR REASSEMBLY PAGE E - 14.....................................................

Stator Installation PAGE E - 14......................................................

Bearing Installation PAGE E - 15.....................................................

Rotor and Intermediate Installation PAGE E - 16.......................................

Terminal Housing and Power Cable Reassembly ans Installation PAGE E - 16.............

Sealing Terminal Housing Connections With Silicone Adhesive PAGE E - 17..............

Sealing Terminal Plate Connections With Potting Compound PAGE E - 19................

Terminal Housing Installation PAGE E - 19............................................

FINAL ASSEMBLY PAGE E - 20.........................................................

VACUUM / PRESSURE TESTING PAGE E - 20............................................

LUBRICATION PAGE E - 21.............................................................

Seal Cavity PAGE E - 21............................................................

Motor Housing Cavity PAGE E - 22...................................................

S SERIES PUMPS OM-07264

PAGE I - 1INTRODUCTION

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 manual will alert personnel to known proce

dures which require special attention, to those

which could damage equipment, and to those

which could be dangerous to personnel. However,

this manual cannot possibly anticipate and provide

detailed precautions for every situation that might

occur during maintenance of the unit. Therefore, it

is the responsibility of the owner/maintenance per

sonnel to ensure that only safe, established main

tenance procedures are used, and that any proce

dures not addressed in this manual are performed

only after establishing that neither personal safety

nor pump integrity are compromised by such prac

tices.

If there are any questions regarding the pump or

its application which are not covered in this man

ual 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:

Gorman‐Rupp of Canada Limited

70 Burwell Road

St. Thomas, Ontario N5P 3R7

Phone: (519) 631-2870

For information or technical assistance on the pow

er source, contact the power source manufactur

er's local dealer or representative.

The following are used to alert maintenance per

sonnel to procedures which require special atten

tion, 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 re

quired and the injury which will result

from failure to follow the procedure.

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 possi

ble damage which could result from failure

to follow the procedure.

NOTE

Instructions to aid in installation, operation,and

maintenance, or which clarify a procedure.

OM-07264 S SERIES PUMPS

PAGE A - 1SAFETY

SAFETY - SECTION A

This information applies to the S Series

submersible motor driven pumps and

control boxes.

Because pump installations are seldom

identical, this manual cannot possibly

provide detailed instructions and pre

cautions for each specific application.

Therefore, it is the owner/installer's re

sponsibility to ensure that applications

not addressed in this manual are per

formed only after establishing that nei

ther operator safety nor pump integrity

are compromised by the installation.

Before attempting to open or service the

pump:

1. Familiarize yourself with this man

ual.

2. Lock out incoming power to the

control box to ensure that the

pump will remain inoperative.

3. Allow the pump to completely cool

if overheated.

5. Close the discharge valve (if

used).

This pump is not designed to pump vol

atile, 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 endan

ger personnel as a result of pump fail

ure. Consult the factory for specific ap

plication data.

Before connecting any cable to the con

trol box, be sure to ground the control

box. Refer to the Control Box Manual for

the suggested grounding methods.

The pump motor is designed to be oper

ated through the control box furnished

with the pump. The control box provides

overload protection and power control.

Do not connect the pump motor directly

to the incoming power lines.

The electrical power used to operate

this pump is high enough to cause inju

ry or death. Obtain the services of a

qualified electrician to make all electri

cal connections. Make certain that the

pump and enclosure are properly

grounded; never use gas pipe as an

electrical ground. Be sure that the in

coming power matches the voltage and

phase of the pump and control before

connecting the power source. Do not

run the pump if the voltage is not within

the limits. If the overload unit is tripped

during pump operation, correct the

problem before restarting the pump.

The electrical power used to operate

this pump is high enough to cause inju

ry or death. Make certain that the control

handle on the control box is in the OFF

S SERIES PUMPS OM-07264

PAGE A-2 SAFETY

position and locked out, or that the pow

er supply to the control box has been

otherwise cut off and locked out, before

attempting to open or service the pump

assembly. Tag electrical circuits to pre

vent accidental start‐up.

Never attempt to alter the length or re

pair any power cable with a splice. The

pump motor and cable must be com

pletely waterproof. Injury or death may

result from alterations.

All electrical connections must be in ac

cordance with The National Electric

Code and all local codes. If there is a

conflict between the instructions pro

vided 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

applicable specifications, or substitu

tion of electrical parts not supplied or

approved by the manufacturer, can re

sult in severe injury or death and void

warranty.

Death or serious personal injury and

damage to the pump or components

can occur if proper lifting procedures

are not observed. Make certain that

hoists, chains, slings or cables are in

good working condition and of suffi

cient capacity and that they are posi

tioned so that loads will be balanced

and the pump or components will not be

damaged when lifting. Do not attempt to

lift this pump by the motor or control

cables, or the piping. Attach proper lift

ing equipment to the lifting bail fitted on

the pump. Lift the pump or component

only as high as necessary and keep per

sonnel away from suspended objects.

After the pump has been installed, make

certain that the pump and all piping or

hose connections are secure before op

eration.

Obtain the services of a qualified elec

trician to troubleshoot, test and/or ser

vice the electrical components of this

pump.

Approach the pump cautiously after it

has been running. Although the motor is

cooled by the liquid being pumped, nor

mal operating temperatures can be high

enough to cause burns. The tempera

ture will be especially high if operated

against a closed discharge valve. Never

operate against a closed discharge

valve for long periods of time.

Do not remove plates, covers, gauges,

pipe plugs, or fittings from an over

heated pump. Vapor pressure within the

pump can cause parts being disen

gaged to be ejected with great force. Al

OM-07264 S SERIES PUMPS

PAGE A - 3SAFETY

low the pump to completely cool before

servicing.

Do not attempt to lift the pump by the

motor power cable or the piping. Attach

proper lifting equipment to the lifting

device fitted to the pump. If chains or

cable are wrapped around the pump to

lift it, make certain that they are posi

tioned so as not to damage the pump,

and so that the load will be balanced.

Pumps and related equipment must be

installed and operated according to all na

tional, local and industry standards.

S SERIES PUMPS OM-07264

PAGE B - 1INSTALLATION

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 rec

ommendations and practices required to inspect,

position, and arrange the pump and piping. If there

are any questions concerning your specific instal

lation, contact your Gorman‐Rupp distributor or

the Gorman‐Rupp Company.

Liquid level devices are available from Gorman‐

Rupp as optional equipment. For information on

installing and operating these items, refer to the lit

erature accompanying them.

Pump Model Designation

Following is a description of the model numbering

system for S Series pumps. These submersible

pumps are available in a range of sizes. Refer to the

following chart to identify the size for your specific

pump model.

Series

Discharge Size

Pump Hydraulics

Pump Construction

H.P. (If Shown)

Voltage/Phase

3 C 1 E 230/3- 6.2

Pump Model

PREINSTALLATION INSPECTION

The pump assembly was inspected and tested be

fore shipment from the factory. Before installation,

check for damage which may have occurred dur

ing shipment. Check as follows:

a. Inspect the pump assembly for cracks, dents,

damaged threads, and other obvious dam

age.

b. Check for loose attaching hardware. Since

gaskets tend to shrink after drying, check for

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 pow

er.

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.

PUMP SEAL

S Series pumps utilize one of the following sealing

methods.

1. There are two shaft seals in the pump. The

lower seal prevents liquid from entering the in

termediate cavity at the impeller end. The up

per seal prevents oil leakage from the motor

housing cavity and acts as back‐up protection

in the event of lower seal failure.

2. The pump is equipped with one double‐faced

seal assembly. It is designed to prevent the

liquid being pumped from entering the inter

mediate cavity at the impeller end, and to pre

vent moisture from entering the motor hous

ing cavity at the motor end.

Regardless of which sealing method is used, the

seal is lubricated by premium quality submersible

pump oil.

LUBRICATION

S series pumps are lubricated in one of the follow

ing methods.

1. Some pumps utilize two lubrication cavities.

The motor housing cavity provides lubrication

to the motor assembly and bearings, while the

intermediate cavity provides lubrication to the

pump seal.

2. Some pumps utilize one lubrication cavity, lo

cated just behind the seal plate. 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.

All S Series pumps are fully lubricated when

shipped from the factory. However, lubrication lev

els must be checked before installing the pump

OM-07264 S SERIES PUMPS

PAGE B - 2 INSTALLATION

(see LUBRICATION in the MAINTENANCE AND

REPAIR MANUAL). An additional quart (0,9 liter)

of oil is provided to “top off” the oil level in the pump

motor cavity, if so required. If the oil level is abnor

mally low, determine the cause before putting the

pump into service.

Due to differences in pump design, the quantity of

oil and manner in which oil is to be added to the

seal cavity varies between pump models. Refer to

Table B‐2 for oil capacities and positions for filling

the seal cavity in each pump. Motor cavities requir

ing lubrication should always be positioned verti

cally for filling. Refer to LUBRICATION, Section C

for lubrication specifications and intervals.

PUMP INSTALLATION

Pump Motor Specifications

See following tables for pump specifications.

Table B‐1. Pump Specifications

Dual

Voltage

Locked

Rotor

Amperes

Pump

HP/

Motor

Speed

(RPM)

Full

Load

Amperes

Load

Amperes

Discharge

Size

(NPT)

Model Voltage/

Phase

S3A NO 3450 28 5 125 3 INCH

230/1 5 HP

Table B‐2. Additional Specifications

Pump

Model

Voltage/

Phase

230/1

Approximate

Weight - Lbs. (kg) Oil Capacity

Ounces (Liters)

Seal Cavity

Filling

Position

(H)orizontal

(V)ertical

*(A)ngle

Pump 50 Ft. Cable Seal

Cavity

Motor

Cavity

32.5 (15) 24 (0,6) 32 (1) A

* Position Pumps at Approximately 30off Vertical

S3A 55 (25)

Pump Dimensions

For the approximate physical dimensions of your

pump, refer to the pump specification data sheet

or contact your Gorman‐Rupp distributor or the

Gorman‐Rupp Company.

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 require

ments. Failure to observe these require

ments could result in injury or death to

personnel.

Do not allow the free end of the power

cable to enter the liquid being pumped.

The free end of the cable must be kept dry

to prevent liquid from wicking through the

cable and into the motor.

NOTE

Refer to the performance curve in the Parts List

Manual when determining the most efficient piping

installation. The recommended maximum sub

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