Wacker Neuson PST3 750 User manual

Operator’s Manual
Pump
PST3 750
Type PST3 750
Document 5000185128
Date 1215
Revision 05
Language EN
5000185128

Copyright notice © Copyright 2015 by Wacker Neuson Production Americas LLC
All rights, including copying and distribution rights, are reserved.
This publication may be photocopied by the original purchaser of the
machine. Any other type of reproduction is prohibited without express
written permission from Wacker Neuson Production Americas LLC.
Any type of reproduction or distribution not authorized by Wacker
Neuson Production Americas LLC represents an infringement of valid
copyrights. Violators will be prosecuted.
Trademarks All trademarks referenced in this manual are the property of their
respective owners.
Manufacturer Wacker Neuson Production Americas LLC
N92W15000 Anthony Avenue
Menomonee Falls, WI 53051 U.S.A.
Tel: [phone] · Fax: [phone] · Tel: [phone]
www.wackerneuson.com
Original instructions This Operator’s Manual presents the original instructions. The original
language of this Operator’s Manual is American English.

wc_tx001280gb_FM10.fm 3
PST3 750 Foreword
Foreword
SAVE THESE INSTRUCTIONS—This manual contains important instructions for
the machine models below. These instructions have been written expressly by
Wacker Neuson Production Americas LLC and must be followed during installation,
operation, and maintenance of the machines.
Machine
documentation
■From this point forward in this documentation, Wacker Neuson Production
Americas LLC will be referred to as Wacker Neuson.
■Keep a copy of the Operator’s Manual with the machine at all times.
■Use the separate Parts Book supplied with the machine to order replacement
parts.
■If you are missing any of these documents, please contact Wacker Neuson to
order a replacement or visit www.wackerneuson.com.
■When ordering parts or requesting service information, be prepared to provide
the machine model number, item number, revision number, and serial number.
Expectations
for
information in
this manual
■This manual provides information and procedures to safely operate and
maintain the above Wacker Neuson model(s). For your own safety and to
reduce the risk of injury, carefully read, understand, and observe all instructions
described in this manual.
■Wacker Neuson expressly reserves the right to make technical modifications,
even without notice, which improve the performance or safety standards of its
machines.
■The information contained in this manual is based on machines manufactured
up until the time of publication. Wacker Neuson reserves the right to change any
portion of this information without notice.
■The illustrations, parts, and procedures in this manual refer to Wacker Neuson
factory-installed components. Your machine may vary depending on the
requirements of your specific region.
Machine Item Number
PST3 750 0620454
0620455
0620457

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4
Foreword PST 3 750
Manufacturer’s
approval
This manual contains references to approved parts, attachments, and
modifications. The following definitions apply:
■Approved parts or attachments are those either manufactured or provided by
Wacker Neuson.
■Approved modifications are those performed by an authorized Wacker
Neuson service center according to written instructions published by Wacker
Neuson.
■Unapproved parts, attachments, and modifications are those that do not
meet the approved criteria.
Unapproved parts, attachments, or modifications may have the following
consequences:
■Serious injury hazards to the operator and persons in the work area
■Permanent damage to the machine which will not be covered under warranty
Contact your Wacker Neuson dealer immediately if you have questions about
approved or unapproved parts, attachments, or modifications.

2015-CE-PS3-xxxx_en_FM10.fm
EC Declaration of Conformity
Manufacturer
Wacker Neuson Production Americas LLC, N92W15000 Anthony Avenue,
Menomonee Falls, Wisconsin 53051 USA
Product
Product
Product category
Product function
Item number
PST3 750, PS3 1503, PS3 2203, PS3 3703, PS3 5503
Water Pump Units
To pump fluid
5000620454, 5000620455, 5000620457, 5000009188, 5000008808,
5000008809, 5000009192, 5000008820, 5000008821, 5000008832,
5000008833, 5000009200, 5000008844, 5000008845
Directives and Standards
We hereby declare that this product meets and complies with the relevant regulations and
requirements of the following directives and standards:
2006/42/EC, 2006/95/EC, 2004/108/EC, EN 809, EN ISO 12100, EN 60204-1,
EN 60335-1, EN 60335-2-41, EN 62233, EN 61000-6
Authorized Person for Technical Documents
Robert Raethsel, Wacker Neuson Produktion GmbH & Co. KG, Wackerstrasse 6, 85084
Reichertshofen, Germany
Menomonee Falls, WI, USA
Original Declaration of Conformity
Dan Domanski
Technical Director
For Wacker Neuson
Travis Pound
Manager, Product Engineering
For Wacker Neuson
Keith Herr
Managing Director
For Wacker Neuson

Table of Contents
PST3 750
wc_bo5000185128_05_FM10TOC.fm 7
Foreword 3
EC Declaration of Conformity 5
1 Safety Information 9
1.1 Signal Words Used in this Manual ....................................................... 9
1.2 Machine Description and Intended Use ............................................. 10
1.3 Safety Guidelines for Operating the Machine ..................................... 11
1.4 Service Safety .................................................................................... 13
1.5 Safety Guidelines for Lifting the Machine ........................................... 14
1.6 Operating and Electrical Safety .......................................................... 15
1.7 Labels ................................................................................................. 15
2 Lifting and Transporting 16
3 Installation 17
3.1 Components ....................................................................................... 17
3.2 Preparing the Machine for First Use ................................................... 18
3.3 Application Area ................................................................................. 19
3.4 Preparing for Installation .................................................................... 20
3.5 Checks to Make Before Installation .................................................... 20
3.6 Discharge Fittings ............................................................................... 20
3.7 Electrical Wiring .................................................................................. 21
3.8 Connecting the Power Supply ............................................................ 22
3.9 Cable Assembly ................................................................................. 23
4 Operation 24
4.1 Before starting .................................................................................... 24
4.2 Operation ............................................................................................ 25
4.3 Operating Water Level ....................................................................... 26
4.4 Motor Protection System (Motor Protector) ........................................ 27
4.5 Emergency Shutdown Procedure ....................................................... 27
5 Maintenance 28
5.1 Periodic Maintenance Schedule ......................................................... 28
5.2 Maintenance and Inspection .............................................................. 29
5.3 Storage ............................................................................................... 29

Table of Contents PST3 750
wc_bo5000185128_05_FM10TOC.fm
8
5.4 Lubricant Inspection and Changing Procedures .................................30
5.5 Replacement Parts ..............................................................................31
5.6 Disassembly and Reassembly ............................................................31
5.7 Disassembly ........................................................................................32
5.8 Impeller Inspection ..............................................................................33
5.9 Impeller Reassembly ...........................................................................33
6 Troubleshooting 34
7 Technical Data 36
7.1 Standard Specifications .......................................................................36
7.2 Operating Specifications .....................................................................37
7.3 Dimensions ..........................................................................................38
8 Schematics 39

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PTS3 750 Safety Information
1 Safety Information
1.1 Signal Words Used in this Manual
This manual contains DANGER, WARNING, CAUTION, NOTICE, and NOTE
signal words which must be followed to reduce the possibility of personal injury,
damage to the equipment, or improper service.
NOTICE: Used without the safety alert symbol, NOTICE indicates a situation
which, if not avoided, could result in property damage.
Note: A Note contains additional information important to a procedure.
This is the safety alert symbol. It is used to alert you to potential personal hazards.
►Obey all safety messages that follow this symbol.
DANGER
DANGER indicates a hazardous situation which, if not avoided, will result in death
or serious injury.
►To avoid death or serious injury from this type of hazard, obey all safety
messages that follow this signal word.
WARNING
WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
►To avoid possible death or serious injury from this type of hazard, obey all safety
messages that follow this signal word.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided, could result in
minor or moderate injury.
►To avoid possible minor or moderate injury from this type of hazard, obey all
safety messages that follow this signal word.

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10
Safety Information PTS3 750
1.2 Machine Description and Intended Use
This machine is a submersible water pump. The Wacker Neuson Submersible
Pump consists of an electric motor, an impeller, a strainer, and a metal casing with
ports for water suction and discharge. Power is supplied to the pump through a
corded plug or a hard-wired connection, depending on the installation. The
operator connects hoses to the pump and routes them so that water is pumped
from the work area and discharged into an appropriate location.
This machine is intended to be used for general de-watering applications. This
machine is intended for the pumping of clear water, or water containing solids up to
the size stated within the product’s specifications, and up to the flow, head, and
suction lift limits also stated within the product’s specifications.
This machine has been designed and built strictly for the intended use described
above. Using the machine for any other purpose could permanently damage the
machine or seriously injure the operator or other persons in the area. Machine
damage caused by misuse is not covered under warranty.
The following are some examples of misuse:
■Pumping flammable, explosive, or corrosive fluids
■Pumping hot or volatile fluids that result in pump cavitation
■Operating the pump outside of product specifications due to incorrect diameter
hoses, incorrect length hoses, other inlet or outlet restrictions, or excessive
suction lift or head
■Using the machine as a ladder, support, or work surface
■Using the machine to carry or transport passengers or equipment
■Operating the machine outside of factory specifications
■Operating the machine in a manner inconsistent with all warnings found on the
machine and in the Operator’s Manual.
This machine has been designed and built in accordance with the latest global
safety standards. It has been carefully engineered to eliminate hazards as far as
practicable and to increase operator safety through protective guards and labeling.
However, some risks may remain even after protective measures have been taken.
They are called residual risks. On this machine, they may include exposure to:
■Electric shock from improper electrical connections or high voltage
■Personal injury from improper lifting techniques
■Projectile hazard from discharge
To protect yourself and others, make sure you thoroughly read and understand the
safety information presented in this manual before operating the machine.

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PTS3 750 Safety Information
1.3 Safety Guidelines for Operating the Machine
Operator
training
Before operating the machine:
■Read and understand the operating instructions contained in all manuals
delivered with the machine.
■Familiarize yourself with the location and proper use of all controls and safety
devices.
■Contact Wacker Neuson for additional training if necessary.
When operating this machine:
■Do not allow improperly trained people to operate the machine. People
operating the machine must be familiar with the potential risks and hazards
associated with it.
Operator
qualifications
Only trained personnel are permitted to start, operate, and shut down the machine.
They also must meet the following qualifications:
■have received instruction on how to properly use the machine
■are familiar with required safety devices
The machine must not be accessed or operated by:
■children
■people impaired by alcohol or drugs
Application
area
Be aware of the application area.
■Keep unauthorized personnel, children, and pets away from the machine.
■Remain aware of changing positions and the movement of other equipment and
personnel in the application area/job site.
■Identify whether special hazards exist in the application area, such as toxic
gases, or unstable ground conditions, and take appropriate action to eliminate
the special hazards before using the machine.
Be aware of the application area.
■Do not operate the machine in areas that contain flammable objects, fuels, or
products that produce flammable vapors.
Safety
devices,
controls, and
attachments
Only operate the machine when:
■All safety devices and guards are in place and in working order.
■All controls operate correctly.
■The machine is set up correctly according to the instructions in the Operator’s
Manual.
■The machine is clean.
■The machine’s labels are legible.
To ensure safe operation of the machine:
■Do not operate the machine if any safety devices or guards are missing or
inoperative.
■Do not modify or defeat the safety devices.
■Only use accessories or attachments that are approved by Wacker Neuson.

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12
Safety Information PTS3 750
Safe
operating
practices
When operating this machine:
■Remain aware of the machine’s moving parts. Keep hands, feet, and loose
clothing away from the machine’s moving parts.
When operating this machine:
■Do not operate a machine in need of repair.
Personal
Protective
Equipment
(PPE)
Wear the following Personal Protective Equipment (PPE) while operating this
machine:
■Close-fitting work clothes that do not hinder movement
■Safety glasses with side shields
■Hearing protection
■Safety-toed footwear
After Use ■Stop the engine when the machine is not being operated.
■Close the fuel valve on engines equipped with one when the machine is not
being operated.
■Ensure that the machine will not tip over, roll, slide, or fall when not being
operated.
■Store the machine properly when it is not being used. The machine should be
stored in a clean, dry location out of the reach of children.

wc_si000830gb_FM10.fm 13
PTS3 750 Safety Information
1.4 Service Safety
Service
training
Before servicing or maintaining the machine:
■Read and understand the instructions contained in all manuals delivered with
the machine.
■Familiarize yourself with the location and proper use of all controls and safety
devices.
■Only trained personnel shall troubleshoot or repair problems occurring with the
machine.
■Contact Wacker Neuson for additional training if necessary.
When servicing or maintaining this machine:
■Do not allow improperly trained people to service or maintain the machine.
Personnel servicing or maintaining the machine must be familiar with the
associated potential risks and hazards.
Precautions Follow the precautions below when servicing or maintaining the machine.
■Read and understand the service procedures before performing any service to
the machine.
■All adjustments and repairs must be completed before operating the machine.
Do not operate the machine with a known problem or deficiency.
■All repairs and adjustments shall be completed by a qualified technician.
■Turn off the machine before performing maintenance or making repairs.
■Remain aware of the machine’s moving parts. Keep hands, feet, and loose
clothing away from the machine’s moving parts.
■Re-install the safety devices and guards after repair and maintenance
procedures are complete.
Machine
modifications
When servicing or maintaining the machine:
■Use only accessories/attachments that are approved by Wacker Neuson.
When servicing or maintaining the machine:
■Do not defeat safety devices.
■Do not modify the machine without the express written approval of Wacker
Neuson.
Replacing
parts and
labels
■Replace worn or damaged components.
■Replace all missing and hard-to-read labels.
■When replacing electrical components, use components that are identical in
rating and performance to the original components.
■When replacement parts are required for this machine, use only Wacker
Neuson replacement parts or those parts equivalent to the original in all types of
specifications, such as physical dimensions, type, strength, and material.

wc_si000830gb_FM10.fm
14
Safety Information PTS3 750
Cleaning When cleaning and servicing the machine:
■Keep the machine clean and free of debris such as leaves, paper, cartons, etc.
■Keep the labels legible.
When cleaning the machine:
■Do not clean the machine while it is running.
■Never use gasoline or other types of fuels or flammable solvents to clean the
machine. Fumes from fuels and solvents can become explosive.
Personal
Protective
Equipment
(PPE)
Wear the following Personal Protective Equipment (PPE) while servicing or
maintaining this machine:
■Close-fitting work clothes that do not hinder movement
■Safety glasses with side shields
■Hearing protection
■Safety-toed footwear
In addition, before servicing or maintaining the machine:
■Tie back long hair.
■Remove all jewelry (including rings).
1.5 Safety Guidelines for Lifting the Machine
When lifting the machine:
■Make sure slings, chains, hooks, ramps, jacks, forklifts, cranes, hoists, and any
other type of lifting device used is attached securely and has enough weight-
bearing capacity to lift or hold the machine safely. See section Technical Data
for machine weight.
■Remain aware of the location of other people when lifting the machine.
■Only use the lifting points and tie-downs described in the Operator’s Manual.
■Make sure the transporting vehicle has sufficient load capacity and platform size
to safely transport the machine.
To reduce the possibility of injury:
■Do not stand under the machine while it is being lifted or moved.
■Do not get onto the machine while it is being lifted or moved.

wc_si000830gb_FM10.fm 15
PTS3 750 Safety Information
1.6 Operating and Electrical Safety
This pump has not been investigated for use in swimming pool areas.
An acceptable motor-control switch shall be provided at the time of installation
according to local codes and regulations.
1.7 Labels
WARNING
Electric shock hazard.
►To reduce risk of electric shock, connect only to a properly grounded,
grounding-type receptacle.
►To reduce risk of electric shock, follow instructions in this manual for proper
installation.
CAUTION
Electric shock hazard. This pump may automatically restart.
►Prior to working on the pump or control panel, all supply circuits must be
disconnected.
►Do not remove cord and strain relief.
CAUTION
Do not attempt to operate this product before reading the
Operator’s Manual and understanding its contents.
Mishandling of this product may result in explosion, fire, or
electrical shock.
■Do not pull on the power cord or use the power cord to lift
the pump.
■Always use a dedicated ground leakage circuit breaker.
■Be sure to install the ground wire securely.
■Be sure to disconnect the power supply before handling
or inspecting the pump.
Never insert your hand into the pump inlet holes while the
pump is connected to the power supply.

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16
Lifting and Transporting PST3 750
2 Lifting and Transporting
Avoid dropping the pump or other strong impact. Lift the pump by holding it firmly
with the hands or by attaching a rope or chain to the handle.
WARNING
Personal injury hazard. The cable may be damaged, causing electrical leakage,
shock, or fire. If the pump is not lowered into place correctly, it may fall and be
damaged or cause injury.
►Do not under any circumstances install or move the pump by suspending it from
the cable assembly.
►When installing the pump, pay close attention to its center of gravity and weight.
CAUTION
Personal injury hazard. When transporting the pump by hand, be sure to employ
manpower commensurate with the weight of the pump.
►To avoid back injury when lifting the pump, bend the knees to pick it up rather
than bending your back only.

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PST3 750 Installation
3 Installation
3.1 Components
wc_gr00566
3
1
8
10
9
11
12
13
14
2
3
4
5
6
7
Ref. Description Ref. Description
1 Lifting handle 8 Cable assembly
2 Mechanical seal 9 Oil plug
3 Lubricant 10 Oil lifter
4 Oil casing 11 Shaft sleeve
5 Hose coupling 12 Impeller
6 Pump casing 13 Stirrer
7 Casing packing 14 Strainer stand

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18
Installation PST3 750
3.2 Preparing the Machine for First Use
When the pump is delivered, first perform the following inspection checks:
■While unpacking, inspect the product for damage during shipment, and make
sure all bolts and nuts are tightened properly.
■Check the model number to make sure it is the product that was ordered. Be
certain it is the correct voltage and frequency.
Note: If there is any problem with the product as shipped, contact your nearest
dealer or Wacker Neuson representative at once.
CAUTION
Personal injury hazard. Failure to observe this caution can lead to electrical shock,
current leakage, fire, water leakage, or other problems.
►Do not operate this product under any conditions other than those for which it is
specified.

wc_tx001981gb_FM10.fm 19
PST3 750 Installation
3.3 Application Area
Note: Consult your local dealer or Wacker Neuson representative before using
with any liquids other than those indicated in this document.
1. Install the pump in a location with sufficient water level, where water collects
readily.
Note: See “Operating Water Level” for the water level necessary for operation. The
discharge end of the hose should be located higher than the water surface. If the
end of the hose is submerged, water may flow back to the pump when the pump is
stopped; and if the hose end is lower than the water surface, water may overflow
when the pump is turned off.
2. The hose should be run as straight as possible, since excessive bending will
hinder the water flow, preventing sufficient lift, and can even cause the hose to
become clogged with earth. If the hose is crimped near the pump, air can
become trapped in the pump and cause idle running.
3. If used in a permanent installation, where the pump is not readily accessible
after installation, please contact Wacker Neuson for a duplicate nameplate to be
installed at the wellhead or on the control box so that it will be readily visible.
WARNING
Personal injury hazard.
►If the pump is used to drain a swimming pool, the pump must be connected to a
Ground Fault Interrupter (GFI).
►If the pump is used in fountains, the pump must be connected to a Ground Fault
Interrupter (GFI).
►The pump must not be used when people are in the water.
►Leakage of pump lubricants may cause pollution of water.
►Proper plug must be provided according to local codes and standards. Refer to
wiring diagram.
►Do not use this pump in liquids other than water, such as oil, salt water, or
organic solvents.
►Use with a power supply voltage within ±5% of the rated voltage.
►Do not use in water temperatures outside the range of 0–40°C (32–104°F)
which can lead to failure, current leakage or shock.
►Do not use in the vicinity of explosive or flammable materials.
►Use only in fully assembled state.
CAUTION
Personal injury hazard. If large quantities of earth are sucked up, damage resulting
from friction in the pump can lead to electrical leakage and shock.
►Use the pump in the upright position. To prevent the pump from becoming
submerged in mud, mount it on a block or other firm base if necessary.

wc_tx001981gb_FM10.fm
20
Installation PST3 750
3.4 Preparing for Installation
Before installing the pump at a work site, you will need to have the following tools
and instruments ready:
■Insulation resistance tester (megohmmeter)
■AC voltmeter
■AC ammeter (clamp-on type)
■Bolt and nut tighteners
■Power supply connection tools (screwdriver or box wrench)
Note: Please also read the instructions that come with each of the test instruments.
3.5 Checks to Make Before Installation
When a grounded plug is used:
Use the megohmmeter to measure the motor insulation resistance between the
cable assembly prongs and ground.
When connection wires are used:
With the megohmmeter, measure the insulation resistance between the ground
wire (Green) and each one of the two power wires.
Reference insulation resistance: 20Mor greater.
Note: The reference insulation resistance (20Mor greater) is the value when the
pump is new or has been repaired. For the reference value after installation, see
the Periodic Maintenance table.
3.6 Discharge Fittings
This pump series is offered with a variety of discharge fittings. Follow procedures
noted below to assure a proper discharge connection.
Threaded Discharge Fitting (BSP)
Tighten hose coupling or discharge pipe securely and with proper gaskets.
Quick Disconnect Coupling (QD)
Assure coupling is tightened securely to pump discharge fitting and companion
coupling is securely fastened with proper gaskets.
Barbed Discharge Fitting (Barb)
Place hose clamp over hose and push hose to the base of the discharge fitting.
Tighten the hose clamp to secure the hose in place.