Wacker Neuson PST2 400 User manual

5000188001 07 0719
5000188001
Operator’s Manual
Pump
PST2 400
PSTF2 400
EN

Copyright
notice
© Copyright 2019 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_tx004643en.fm 3
CALIFORNIA Proposition 65 Warning
CALIFORNIA Proposition 65 Warning
WARNING
The engine exhaust from this product contains chemicals known to the State of
California to cause cancer, birth defects, or other reproductive harm.
WARNING
Diesel engine exhaust and some of its constituents are known to the State of
California to cause cancer, birth defects, and other reproductive harm.
WARNING
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov.
WARNING
Batteries, battery posts, terminals and related accessories contain lead and lead
compounds, and other chemicals known to the State of California to cause cancer
and birth defects or other reproductive harm. WASH HANDS AFTER HANDLING.

CALIFORNIA Proposition 65 Warning Proposition 65 Warning
4 wc_tx004643en.fm
This page is intentionally left blank.

PST2 400 Foreword
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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.
For spare parts information, please see your Wacker Neuson Dealer, or visit
the Wacker Neuson website at http://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.
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.
Part No. PST2 400: 0009112
PSTF2 400: 0620435

Foreword PST2 400
6 wc_tx002043gb.fm

wc_bo5000188001_07TOC.fm 7
Table of ContentsPST2 400
CALIFORNIA Proposition 65 Warning 3
Foreword 5
1 Safety Information 9
1.1 Signal Words Used in this Manual ....................................................... 9
1.2 Machine Description and Intended Use ............................................. 10
1.3 Operating and Electrical Safety .......................................................... 11
1.4 Labels ................................................................................................. 13
2 Lifting and Transporting 14
3 Installation 15
3.1 Components ....................................................................................... 15
3.2 Residue Plate (if equipped) ................................................................ 16
3.3 Preparing for Installation .................................................................... 18
3.4 Checks to Make Before Installation .................................................... 18
3.5 IInstalling the Float (if equipped) ........................................................ 19
3.6 Electrical Wiring .................................................................................. 20
3.7 Connecting the Power Supply ............................................................ 21
3.8 Cable Assembly ................................................................................. 22
4 Operation 23
4.1 Before starting .................................................................................... 23
4.2 Test Operation .................................................................................... 24
4.3 Operation ............................................................................................ 25
4.4 Operating Water Level ....................................................................... 26
4.5 Automatic Operation (PSTF2 400 only) ............................................. 27
4.6 Emergency Shutdown Procedure ....................................................... 27
5 Maintenance 28
5.1 Periodic Maintenance Schedule ......................................................... 28
5.2 Storage ............................................................................................... 29
5.3 Disassembly and Reassembly ........................................................... 31
5.4 Disassembly ....................................................................................... 32
5.5 Impeller Inspection ............................................................................. 33
5.6 Impeller Reassembly .......................................................................... 34
5.7 Troubleshooting .................................................................................. 35

8 wc_bo5000188001_07TOC.fm
Table of Contents PST2 400
6 Technical Data 36
6.1 Standard Specifications .......................................................................36
6.2 Operating Specifications .....................................................................37
6.3 Dimensions ..........................................................................................38
7 Schematics 39
8 AEM Safety Manual 41

PST2 400 Safety Information
wc_si000034gb.fm 9
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 mes-
sages 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.

Safety Information PST2 400
10 wc_si000034gb.fm
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 volt-
age
• Personal injury from improper lifting techniques
• Projectile hazard from discharge

PST2 400 Safety Information
wc_si000034gb.fm 11
To protect yourself and others, make sure you thoroughly read and
understand the safety information presented in this manual before
operating the machine.
1.3 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.
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
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
WARNING
Electric shock hazard.
► To reduce risk of electric shock, connect only to a properly grounded, ground-
ing-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 discon-
nected.
► Do not remove cord and strain relief.

Safety Information PST2 400
12 wc_si000034gb.fm
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 con-
trols 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.
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).
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 dimen-
sions, type, strength, and material.

PST2 400 Safety Information
wc_si000034gb.fm 13
1.4 Labels
A nameplate listing the model number, item number, revi-
sion number, and serial number is attached to each unit.
Please record the information found on this nameplate so it
will be available should the nameplate become lost or dam-
aged. When ordering parts or requesting service informa-
tion, you will always be asked to specify the model number,
item number, revision number, and serial number of the
unit.
CAUTION
Do not attempt to operate this product before reading the
Operator’s Manual and understanding its contents. Mishan-
dling of this product may result in explosion, fire, or electri-
cal 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.
California Proposition 65 Warning
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov.
Wacker Neuson Corporation
Menomonee Falls, WI 53051 USA
Model ItemNo. Rev.
SerialNo.
VHz
kWkgMax.L/minMax.m
MADEIN JAPAN
HPlbsMax.GPMMax.ft CUS
L
I
S
T
E
D
R
Phase
C22.2 No.108-M89
2001993
Conforms toULStd.778
Cert.to CAN/CSA St d.
Amp.
Man.Y/MTHERMALLY PROTECTED
INDOORSOR OUTDOORS
CSA ENCLOSURE 3
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
Cáncer y daño reproductivo
www.P65Warnings.ca.gov
Cancer ou malformations
congénitales
www.P65Warnings.ca.gov
WARNING
AVERTISSEMENT
ADVERTENCIA
5100045462

Lifting and Transporting PST2 400
14 wc_tx001635gb.fm
2 Lifting and Transporting
Do not under any circumstances install or move the pump by
suspending it from the cable assembly. The cable may be damaged,
causing electrical leakage, shock, or fire.
When installing the pump, pay close attention to its center of gravity
and weight. If it is not lowered into place correctly, it may fall and be
damaged or cause injury.
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.
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
CAUTION

PST2 400 Installation
wc_tx001980gb.fm 15
3 Installation
3.1 Components
Ref. Description Ref. Description
1 Lifting handle 9 Oil plug
2 Mechanical seal 10 Dust seal
3 Lubricant 11 Sleeve
4 Oil housing 12 Impeller
5 Coupling 13 Stirrer nut
6 Volute 14 Strainer
7 Gasket 15 Oil lifter
8 Cable assembly
wc_gr001699
8
1
9
10
12
13
14
6
11
15
2
53

Installation PST2 400
16 wc_tx001980gb.fm
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.
3.2 Residue Plate (if equipped)
The residue plate kit contains the residue plate, washers, and bolts.
Reuse nuts from pump assembly.
3.2.1 Remove the strainer (3) by loosening the three nuts (1) and removing
the three bolts (2). Keep nuts for reuse.
3.2.2 Position washers (4) and attach the residue plate (5) with new bolts (6)
included with kit.
Note: Be certain to use washers to prevent motor shaft stirrer nut from
protruding through residue plate.
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.

PST2 400 Installation
wc_tx001980gb.fm 17
Application Area
Note: Consult your local dealer or Wacker Neuson representative
before using with any liquids other than those indicated in this
document.
3.2.3 Install the pump in a location with sufficient water level, where water
collects readily.
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.
1
2
3
4
5
6
wc_gr00114
4

Installation PST2 400
18 wc_tx001980gb.fm
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.
3.2.4 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.
3.2.5 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.
3.3 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.
3.4 Checks to Make Before Installation
• When a three-prong grounded plug is used:
Use the megohmmeter to measure the motor insulation resistance
between the grounding prong and each one of the two power prongs.
• 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.
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.

PST2 400 Installation
wc_tx001980gb.fm 19
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.
3.5 IInstalling the Float (if equipped)
3.5.1 Set the length of the float lead wire to the dimension indicated below.
Failure to set the correct lead wire length will lead to improper
operation of the pump.
NOTICE: Install the float so that it moves freely up and down. If the
float binds or catches, it will cause the pump to operate improperly.
Pump model Length “L”
PSTF2 400 150 mm (5.9 in.)
wc_gr005664

Installation PST2 400
20 wc_tx001980gb.fm
3.6 Electrical Wiring
Always make sure the pump is equipped with the specified overload
protectors and fuses or breakers, so as to prevent electrical shock
from a current leak or pump malfunction.
Operate within the capacity of the power supply and wiring.
WARNING
Personal injury hazard. Incorrect wiring can lead to current leakage, electrical
shock or fire.
Electrical wiring should be connected by a qualified person in accordance with all
applicable regulations. Failure to observe this precaution not only risks breaking the law
but is extremely dangerous.
WARNING
Electrical shock hazard. Failure to ground the pump properly can lead to electrical
shock from a current leak or pump malfunction.
Do not attach the grounding wire to a gas pipe, water pipe, lightning arrester or
telephone grounding wire.