Wilo Padus PRO User manual

Pioneering for You
·
Wilo-Padus PRO
6084247 • Ed.02/2019-10
en Installation and operating instructions

en
Installation and operating instructions Wilo-Padus PRO 3
Table of contents
1 General information ................................................................................................................................................................. 5
1.1 About these instructions ..................................................................................................................................................................................5
1.2 Copyright ............................................................................................................................................................................................................5
1.3 Subject to change..............................................................................................................................................................................................5
1.4 Warranty..............................................................................................................................................................................................................5
2 Safety......................................................................................................................................................................................... 5
2.1 Identification of safety instructions................................................................................................................................................................5
2.2 Personnel qualifications....................................................................................................................................................................................7
2.3 Electrical work ....................................................................................................................................................................................................7
2.4 Monitoring devices ............................................................................................................................................................................................7
2.5 Use in fluids hazardous to health ....................................................................................................................................................................8
2.6 Transport.............................................................................................................................................................................................................8
2.7 Installing/dismantling........................................................................................................................................................................................8
2.8 During operation ................................................................................................................................................................................................8
2.9 Maintenance tasks.............................................................................................................................................................................................9
2.10 Operating fluid ...................................................................................................................................................................................................9
2.11 Operator responsibilities...................................................................................................................................................................................9
3 Application/use....................................................................................................................................................................... 10
3.1 Intended use.................................................................................................................................................................................................... 10
3.2 Improper use.................................................................................................................................................................................................... 10
4 Product description................................................................................................................................................................ 10
4.1 Design............................................................................................................................................................................................................... 10
4.2 Monitoring devices ......................................................................................................................................................................................... 11
4.3 Operating modes............................................................................................................................................................................................. 11
4.4 Operation with frequency converter............................................................................................................................................................ 11
4.5 Operation in an explosive atmosphere ........................................................................................................................................................ 11
4.6 Technical data .................................................................................................................................................................................................11
4.7 Type key........................................................................................................................................................................................................... 12
4.8 Scope of delivery............................................................................................................................................................................................. 12
5 Transportation and storage................................................................................................................................................... 12
5.1 Delivery............................................................................................................................................................................................................. 12
5.2 Transport.......................................................................................................................................................................................................... 13
5.3 Storage ............................................................................................................................................................................................................. 13
6 Installation and electrical connection .................................................................................................................................. 14
6.1 Personnel qualifications................................................................................................................................................................................. 14
6.2 Installation types............................................................................................................................................................................................. 14
6.3 Operator responsibilities................................................................................................................................................................................ 14
6.4 Installation ....................................................................................................................................................................................................... 14
6.5 Electrical connection...................................................................................................................................................................................... 17
7 Commissioning........................................................................................................................................................................ 18
7.1 Personnel qualifications................................................................................................................................................................................. 18
7.2 Operator responsibilities................................................................................................................................................................................ 18
7.3 Direction of rotation check (for three-phase current motors only)........................................................................................................ 19
7.4 Operation in an explosive atmosphere ........................................................................................................................................................ 19
7.5 Before switching on........................................................................................................................................................................................ 19
7.6 Switching on and off ...................................................................................................................................................................................... 20
7.7 During operation ............................................................................................................................................................................................. 20
8 Shut-down/dismantling......................................................................................................................................................... 20
8.1 Personnel qualifications................................................................................................................................................................................. 20
8.2 Operator responsibilities................................................................................................................................................................................ 20
8.3 Shut-down....................................................................................................................................................................................................... 21
8.4 Removal............................................................................................................................................................................................................ 21

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4 WILO SE 2019-10
9 Maintenance and repair.......................................................................................................................................................... 22
9.1 Personnel qualifications................................................................................................................................................................................. 23
9.2 Operator responsibilities................................................................................................................................................................................ 23
9.3 Operating fluid ................................................................................................................................................................................................ 23
9.4 Maintenance intervals.................................................................................................................................................................................... 23
9.5 Maintenance measures .................................................................................................................................................................................. 24
10 Repairs ..................................................................................................................................................................................... 26
10.1 Adjusting the impeller clearance .................................................................................................................................................................. 26
11 Faults, causes and remedies .................................................................................................................................................. 27
12 Spare parts............................................................................................................................................................................... 30
13 Disposal.................................................................................................................................................................................... 30
13.1 Oils and lubricants........................................................................................................................................................................................... 30
13.2 Protective clothing .........................................................................................................................................................................................30
13.3 Information on the collection of used electrical and electronic products.............................................................................................. 30

General information en
Installation and operating instructions Wilo-Padus PRO 5
1 General information
1.1 About these instructions These installation and operating instructions are an integral part of the product. Read
these instructions before commencing work and keep them in an accessible place at all
times. Strict adherence to these instructions is a precondition for the intended use and
correct operation of the product. All information and markings on the product must be
observed.
The language of the original operating instructions is German. All other languages of
these instructions are translations of the original operating instructions.
1.2 Copyright These installation and operating instructions have been copyrighted by the manufac-
turer. Contents of any kind may not be reproduced or distributed, or used for purposes
of competition and shared with others.
1.3 Subject to change The manufacturer reserves the right to make technical modifications to the device or
individual components. The illustrations used may differ from the original and are in-
tended as an example representation of the device.
1.4 Warranty The specifications in the current “General Terms and Conditions” apply to the warranty
and the warranty period. These can be found at www.wilo.com/legal
Any deviations must be contractually agreed and shall then be given priority.
Claim to warranty
If the following points are complied with, the manufacturer is obligated to rectify every
qualitative or constructive flaw:
ƒThe defects are reported in writing to the manufacturer within the warranty period.
ƒApplication according to intended use.
ƒAll monitoring devices are connected and tested before commissioning.
Exclusion from liability
Exclusion from liability excludes all liability for personal injury, material damage or fi-
nancial losses. This exclusion ensues as soon as one of the following applies:
ƒInadequate configuration due to inadequate or incorrect instructions by the operator
or the client
ƒNon-compliance with installation and operating instructions
ƒImproper use
ƒIncorrect storage or transport
ƒIncorrect installation or dismantling
ƒInsufficient maintenance
ƒUnauthorised repairs
ƒInadequate construction site
ƒChemical, electrical or electro-chemical influences
ƒWear
2 Safety This chapter contains basic information for the individual phases of the life cycle. Fail-
ure to observe this information carries the following risks:
ƒInjury to persons from electrical, mechanical and bacteriological factors as well as
electromagnetic fields
ƒEnvironmental damage from discharge of hazardous substances
ƒProperty damage
ƒFailure of important functions of the product
Failure to observe the information contained herein will result in the loss of claims for
damages.
The instructions and safety instructions in the other chapters must also be ob-
served!
2.1 Identification of safety instruc-
tions These installation and operating instructions set out safety instructions for preventing
personal injury and damage to property. These safety instructions are shown differ-
ently:
ƒSafety instructions relating to personal injury start with a signal word, are preceded
by a corresponding symbol and are shaded in grey.

en Safety
6 WILO SE 2019-10
DANGER
Type and source of the danger!
Consequences of the danger and instructions for avoidance.
ƒSafety instructions relating to property damage start with a signal word and are dis-
played without a symbol.
CAUTION
Type and source of the danger!
Consequences or information.
Signal words
ƒDANGER!
Failure to observe the safety instructions will result in serious injuries or death!
ƒWARNING!
Failure to follow the instructions can lead to (serious) injuries!
ƒCAUTION!
Failure to follow the instructions can lead to property damage and a possible total
loss.
ƒNOTICE!
Useful information on handling the product
Markups
‡Prerequisite
1. Work step/list
⇒ Notice/instructions
▶ Result
Symbols
These instructions use the following symbols:
Danger caused by electric voltages
Danger of bacterial infection
Danger of explosion
General warning symbol
Warning – risk of cuts and similar injuries
Warning – hot surfaces
Warning – high pressure
Warning – suspended loads
Personal protective equipment: wear a safety helmet

Safety en
Installation and operating instructions Wilo-Padus PRO 7
Personal protective equipment: wear foot protection
Personal protective equipment: wear hand protection
Personal protective equipment: wear mouth protection
Personal protective equipment: wear safety goggles
Working alone is prohibited! A second person must be present.
Useful information
2.2 Personnel qualifications Personnel must:
ƒBe instructed about locally applicable regulations governing accident prevention.
ƒHave read and understood the installation and operating instructions.
Personnel must have the following qualifications.
ƒElectrical work: A qualified electrician must carry out the electrical work.
ƒInstallation/dismantling: The technician must be trained in the use of the necessary
tools and fixation materials for the relevant construction site.
ƒMaintenance tasks: The technician must be familiar with the use of operating fluids
and their disposal. In addition, the technician must have basic knowledge of mech-
anical engineering.
Definition of “qualified electrician”
A qualified electrician is a person with appropriate technical education, knowledge and
experience who can identify and prevent electrical hazards.
2.3 Electrical work ƒElectrical work must be carried out by a qualified electrician.
ƒBefore commencing work, disconnect the product from the mains and secure it
against being switched on again.
ƒObserve applicable local regulations when connecting to the mains power supply.
ƒComply with the requirements of the local energy supply company.
ƒTrain personnel in how to make electrical connections.
ƒInstruct personnel in the methods to switch off the device.
ƒObserve the technical information in these installation and operating instructions as
well as on the rating plate.
ƒEarth the device.
ƒObserve regulations for connection to the electrical switching system.
ƒIt is not possible to connect the device to electronic start-up controllers (e.g.soft
starter or frequency converter).
ƒReplace defective connection cables. Contact customer service.
2.4 Monitoring devices The following monitoring devices must be provided on-site:
Circuit breaker
The size and switching characteristics of the circuit breakers must conform to the rated
current of the connected product. Observe local regulations.
Motor protection switch
Make provision for an on-site motor protection switch for devices without a plug! The
minimum requirement is a thermal relay/motor protection switch with temperature
compensation, differential triggering and anti-reactivation device in accordance with
the local regulations. In case of sensitive mains, make provision for the installation on-

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8 WILO SE 2019-10
site of other protective equipment (e.g. overvoltage, undervoltage or phase failure re-
lay, etc.).
Residual-current device (RCD)
Comply with the regulations of the local energy supply company! The use of a residual-
current device is recommended.
If persons come into contact with the device and conductive fluids, secure the connec-
tion with a residual-current device (RCD).
2.5 Use in fluids hazardous to health There is a danger of bacterial infection when using the device in fluids hazardous to
health! Thoroughly clean and disinfect the device after dismantling and prior to further
use. The operator must ensure the following:
ƒThe following protective equipment is provided and worn when cleaning the device:
–Closed safety goggles
–Breathing mask
–Protective gloves
ƒAll persons are informed about the fluid, the associated danger and its correct hand-
ling!
2.6 Transport ƒWear the following protective equipment:
–Safety shoes
–Safety helmet (when using lifting equipment)
ƒAlways hold the handle to transport the device. Never pull the device by the connec-
tion cable!
ƒOnly use legally specified and approved lifting gear.
ƒSelect the lifting gear based on the prevailing conditions (weather, attachment
point, load, etc.).
ƒAlways attach the lifting gear to the attachment points (handle or lifting eye).
ƒThe stability of the lifting equipment must be ensured during operation.
ƒWhen using lifting equipment, ensure a second person is present to coordinate the
procedure if required (e.g. if the operator’s field of vision is blocked).
ƒPersons must not stand underneath suspended loads. Do not move suspended loads
over workplaces where people are present.
2.7 Installing/dismantling ƒWear the following protective equipment:
–Safety shoes
–Safety gloves for protection against cuts
–Safety helmet (when using lifting equipment)
ƒLocally applicable laws and regulations for work safety and accident prevention must
be complied with.
ƒDisconnect the device from the mains and secure it against being switched on again
without authorisation.
ƒAll rotating parts must be at a standstill.
ƒProvide adequate aeration in closed rooms.
ƒWhen working in chambers and closed spaces, a second person must be present for
safety reasons.
ƒTake immediate countermeasures if there is a build-up of toxic or suffocating gases!
ƒClean the device thoroughly. Disinfect devices that are used in fluids hazardous to
health!
ƒMake sure that there is no risk of explosion when carrying out any type of welding
work or work with electrical devices.
2.8 During operation ƒWear the following protective equipment:
–Safety shoes
–Ear protection (in accordance with work regulations notice)
ƒThe work area in which the device is used is not a recreational area. No persons are
allowed in the work area during operation.
ƒThe operator must immediately report any faults or irregularities to their line man-
ager.
ƒIf hazardous defects occur, the operator must immediately deactivate the device.
Hazardous defects include:
–Malfunction of safety and monitoring devices
–Damage to housing parts
–Damage to electrical equipment
ƒNever remove the suction strainer or reach into the suction port. The rotating parts
can crush and sever limbs.

Safety en
Installation and operating instructions Wilo-Padus PRO 9
ƒIf the motor emerges during operation, the motor housing can heat up to above
40°C (104°F).
ƒOpen all gate valves in the piping on both the suction and pressure sides.
ƒEnsure minimum water submersion by using dry-running protection.
ƒUnder normal operating conditions, the sound-pressure level of the product is below
85dB(A). However, the actual sound-pressure level depends on several factors:
–Installation depth
–Installation
–Fixation of accessories and pipe
–Duty point
–Immersion depth
ƒThe operator must measure the sound pressure when the device is being operated
under the applicable operating conditions. Ear protection must be worn for sound
pressure levels of 85dB(A) and above, and a notice must be added to the work regu-
lations!
2.9 Maintenance tasks ƒWear the following protective equipment:
–Closed safety goggles
–Safety shoes
–Safety gloves for protection against cuts
ƒAlways carry out maintenance tasks outside the operating space/installation site.
ƒOnly carry out maintenance tasks mentioned in these installation and operating in-
structions.
ƒOnly original parts from the manufacturer may be used for maintenance and repairs.
Use of parts other than the original parts releases the manufacturer from any liabil-
ity.
ƒCollect any leakage of fluid and operating fluid immediately and dispose of it ac-
cording to the locally applicable guidelines.
ƒStore tools at the designated locations.
ƒAfter completing work, reattach all safety and monitoring devices and check that
they function properly.
Changing operating fluid
In case of a defect, a pressure of several bar can build up in the motor! This pressure
escapes when the screw plugs are opened. If screw plugs are opened without due cau-
tion, they can be ejected at high speed! To avoid injuries, observe the following instruc-
tions:
ƒAdhere to the prescribed sequence of work steps.
ƒUnscrew the screw plugs slowly, but never unscrew them completely. As soon as the
pressure escapes (audible whistling or hissing of air), stop turning the screw plug any
further.
WARNING!Hot operating fluids can also spray out when the pressure is escaping.
This can result in scalding! To avoid injuries, allow the motor to cool down to the
ambient temperature before carrying out any work!
ƒWhen the pressure has completely dissipated, fully unscrew the screw plug.
2.10 Operating fluid In the sealing chamber, the motor is filled with white oil. Operating fluid must be re-
placed during regular maintenance work and disposed off according to the local
guidelines.
2.11 Operator responsibilities ƒInstallation and operating instructions must be in a language which the personnel
can understand.
ƒMake sure that the personnel is relevantly trained for the specified work.
ƒProvide the necessary protective equipment and make sure that the personnel wears
it.
ƒSafety and information signs mounted on the device must be always legible.
ƒTrain the personnel pertaining to the functioning of the system.
ƒEliminate risk from electrical current.
ƒEquip hazardous components inside the system with an on-site guard.
ƒIdentify and cordon off the work area.
ƒTo ensure safe working practice, define the responsibilities of the employees.
Children and persons younger than 16years or with reduced physical, sensory or mental
capacities or limited experience are prohibited from handling the product! A technician
must supervise persons younger than 18years!

en Application/use
10 WILO SE 2019-10
3 Application/use
3.1 Intended use The submersible pumps are suitable for pumping:
ƒWastewater
ƒFluids containing abrasive content (e.g. sand, gravel) with a maximum grain size of
10mm.
ƒFluids of a slightly acidic or alkaline character (pHvalue 4–8).
3.2 Improper use
DANGER
Explosion due to pumping of explosive fluids!
Pumping of highly flammable and explosive fluids (gasoline, kerosene, etc.) in pure
form is strictly prohibited. There is a risk of fatal injury due to explosion! The pumps
are not designed for these fluids.
DANGER
Danger due to fluids hazardous to health!
If the pump is used in fluids hazardous to health, decontaminate the pump after dis-
mantling and before carrying out any other work! There is a risk of fatal injury! Ob-
serve the specifications in the work regulations! The operator must make sure that
the personnel have received and read the work regulations!
The submersible pumps must not be used for pumping:
ƒDrinking water
ƒSewage, with or without faeces
ƒAcids or alkaline solutions
ƒFluids containing hard components (such as stones, wood, metal, etc.)
ƒFluids containing dry matter
ƒFluids containing substances that may dissolve rubber
Intended use includes compliance with this manual. Any other use is regarded as non-
compliant with the intended use.
4 Product description
4.1 Design Submersible drainage pump as a submersible monobloc unit for continuous duty in wet
well installation.
1
2
3
4
5
6
Fig.1: Padus PRO overview
1 Discharge port
2 Cooling shroud
3 Suction strainer
4 Hydraulics housing
5 Handle/attachment point
6 Connection cable
4.1.1 Hydraulics Centrifugal hydraulics with multi-channel impeller and vertical threaded connection on
the pressure side. If necessary, the pressure connection can be fitted horizontally. A
Storz coupling is fitted to the pressure connection.
The hydraulics are not self-priming, i.e. the fluid must flow in either automatically or
with supply pressure.

Product description en
Installation and operating instructions Wilo-Padus PRO 11
4.1.2 Motor The surface-cooled IE3 motor is available in alternating current or three-phase current
versions. Cooling is provided using sheath flow cooling. Waste heat is transferred dir-
ectly to the fluid via the motor housing. The motor can be used for continuous duty
both immersed and non-immersed.
On AC motors, the start capacitor and operating capacitor is installed in a separate
switchgear. The switchgear is integrated in the connection cable. The connection cable
is available in the following versions:
ƒBare cable end
ƒWith plug and fitted float switch
4.1.3 Seal The seal for the fluid and the motor compartment is made via two mechanical seals. The
sealing chamber between the mechanical seals is filled with medical white oil.
4.1.4 Material ƒPump housing: EN-AC-AlSi10Mg + NBR-70
ƒImpeller: 1.4470
ƒSuction strainer: 1.4301
ƒCooling shroud: 1.4301
ƒMotor housing: EN-AC-AlSi10Mg
ƒShaft: 1.4404
ƒSeal on the motor side: SiC/SiC
ƒSeal on the fluid side: SiC/SiC
ƒStatic seal: NBR
4.1.5 Fitted accessories Version “A” of the pump is equipped with a plug and float switch. Depending on the fill
level, it is possible to switch the pump on and off automatically using the float switch.
The plug is designed for use in commercially available shock-proof or CEE sockets and
is not overflow-proof.
4.2 Monitoring devices The thermal motor monitoring protects the motor winding from overheating. A tem-
perature limiter with a bimetallic strip is fitted as standard. The motor monitoring is de-
signed as follows:
ƒVersion with bare cable end: The thermal motor monitoring is self-switching. This
means that the motor is switched off if it overheats and will be automatically
switched on again when it has cooled down.
ƒVersion “A”: The thermal motor monitoring is fitted to the plug on the motor protec-
tion relay.
4.3 Operating modes
Operating mode S1: Continuous duty
The pump can operate continuously at the rated load without exceeding the permiss-
ible temperature.
“Slurping operation” operating mode
Slurping operation facilitates the pumping of very small amounts of fluid. CAU-
TION!Never allow the machine to dry run! Non-compliance can lead to irreparable
damage!
4.4 Operation with frequency con-
verter Operation on the frequency converter is not permitted.
4.5 Operation in an explosive atmo-
sphere Operation in an explosive atmosphere is not permitted.
4.6 Technical data General
Date of manufacture [MFY] See rating plate
Mains connection [U/f] See rating plate
Power consumption [P1]See rating plate
Rated power [P2]See rating plate
Max. delivery head [H] See rating plate
Max. volume flow [Q] See rating plate
Activation type [AT] See rating plate

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12 WILO SE 2019-10
Fluid temperature [t] 3...40°C
Protection class IP68
Insulation class [Cl.] H
Speed [n] See rating plate
Max. switching frequency 20/h
Max. immersion depth [8]See rating plate
Cable length (standard version) 23m
Sound-pressure level 70dB(A)
Explosion protection -
Pressure connection
Padus PRO M05 Storz C
Padus PRO M08 Storz B
Operating modes
Immersed [OTs] S1
Non-immersed [OTe] S1
Statement of date of manufacture
The date of manufacture is stated in accordance with ISO8601: JJJJWww
ƒJJJJ = year
ƒW = abbreviation for week
ƒww = calendar week
4.7 Type key Example: Wilo-Padus PRO M08L/T039-540/A
PRO Series
MImpeller shape = semi-open multi-channel impeller
08 Size
L
Hydraulics:
- n/a = standard version
- L = low-pressure version
TMains connection version: M =1~, T =3~
039 /10 =rated power P2 in kW
5Mains connection frequency: 5 = 50Hz, 6 = 60Hz
40 Key for rated voltage
A
Additional electrical equipment:
n/a = with bare cable end
A= with float switch and plug
P= with plug
4.8 Scope of delivery ƒPump with 23m (75ft) cable
ƒStorz coupling
ƒConnection cable with
–bare cable end
–float switch and plug
ƒInstallation and operating instructions
5 Transportation and storage
5.1 Delivery After receiving the shipment, this must be checked immediately for defects (damage,
completeness). Defects must be noted on the freight documentation! Furthermore, de-
fects must be notified to the transport company or the manufacturer immediately on
the day of receipt of shipment. Subsequently notified defects can no longer be asser-
ted.

Transportation and storage en
Installation and operating instructions Wilo-Padus PRO 13
5.2 Transport
WARNING
Standing under suspended loads!
Never allow anyone to stand under suspended loads! Danger of (serious) injuries
caused by falling parts. Loads may not be carried over work places where people are
present!
WARNING
Head and foot injuries due to a lack of protective equipment!
Danger of (serious) injuries during work. Wear the following protective equipment:
• Safety shoes
• Safety helmet must be worn if lifting equipment are used!
NOTICE
Use only properly functioning lifting equipment!
Use only properly functioning lifting equipment to lift and lower the pump. Ensure
that the pump does not become jammed during lifting and lowering. Do not exceed
the maximum bearing capacity of the lifting equipment! Check that lifting equip-
ment is functioning properly before use!
CAUTION
Soaked packaging may tear!
The product may fall on the ground if unprotected and may be damaged. Lift wet
packaging carefully and replace it immediately!
Only remove the outer packaging at the place of utilisation to ensure that the pump is
not damaged during transport. Use tear-proof plastic sacks of sufficient size to pack-
age used pumps for transport in a leak-proof manner.
The following points must also be observed:
Fig.2: Attachment point
ƒAdhere to the applicable national safety regulations.
ƒUse legally specified and approved lifting gear.
ƒSelect the lifting gear based on the existing conditions (weather, attachment point,
load, etc.).
ƒOnly attach the lifting gear to the attachment point. Fix with a shackle.
ƒUse lifting equipment with sufficient bearing capacity.
ƒThe stability of the lifting equipment must be ensured during operation.
ƒWhen using lifting equipment, a second person must be present to coordinate the
procedure if required (e.g. if the operator’s field of vision is blocked).
5.3 Storage
WARNING
Sharp edges on the impeller and suction port!
Sharp edges can form on the impeller and suction port. There is danger of limbs be-
ing severed! Protective gloves must be worn to protect from cuts.

en Installation and electrical connection
14 WILO SE 2019-10
CAUTION
Total damage due to moisture ingress
The ingress of moisture into the connection cable damages the cable and the pump!
Never immerse the ends of the connection cable in fluid. Seal them tightly during
storage.
Newly delivered pumps can be stored for one year. Contact customer service before
storing the device for more than one year.
When storing the pump, please note the following points:
ƒPlace the pump upright (vertical) on a firm bearing surface. Secure the pump against
falling over and slipping!
ƒThe max. storage temperature is -15°C to +60°C (5°F to 140°F). The max. relative
humidity is 90%, non-condensing. We recommend frost-proof storage. Ambient
temperature: 5 to 25°C (41 to 77°F), relative humidity: 40 to 50%.
ƒDo not store the pump in rooms in which welding work is carried out. The resulting
gases or radiation can corrode the elastomer parts and coatings.
ƒSeal the suction and pressure connection tightly.
ƒProtect the connection cable against kinking and damage. Maintain a constant bend
radius!
ƒImpellers must be turned by 180° at regular intervals (3–6months). This prevents
the bearings from jamming and renews the lubrication film on the mechanical seal.
WARNING!There is a risk of injury due to sharp edges on the impeller and suction
port!
ƒElastomer parts and the coating are subject to natural brittleness. Contact customer
service if the mixer has to be stored for more than 6months.
After storage, remove any dust and oil from the pump and check the coating for dam-
age. Repair damaged coatings before further use.
6 Installation and electrical con-
nection
6.1 Personnel qualifications ƒElectrical work: A qualified electrician must carry out the electrical work.
ƒInstallation/dismantling: The technician must be trained in the use of the necessary
tools and fixation materials for the relevant construction site.
6.2 Installation types ƒVertical portable wet well installation
The following installation types are not permitted:
ƒVertical stationary wet well installation with suspension unit
ƒVertical stationary dry well installation
ƒHorizontal installation
6.3 Operator responsibilities ƒObserve the locally applicable professional and trade association accident preven-
tion and safety regulations.
ƒObserve all regulations for working with heavy loads and under suspended loads.
ƒProvide protective equipment and ensure that the protective equipment is worn by
personnel.
ƒObserve local regulations on the latest technology for the disposal of wastewater
and sewage (without faeces).
ƒAvoid pressure surges!
ƒCheck that the available consulting documents (installation plans, design of the op-
erating space, inflow conditions) are complete and correct.
6.4 Installation
DANGER
Risk of fatal injury due to dangerous lone working practices!
Work in chambers and narrow rooms as well as work involving risk of falling are dan-
gerous work. Such work may not be carried out autonomously! A second person
must be present for safety reasons.

Installation and electrical connection en
Installation and operating instructions Wilo-Padus PRO 15
WARNING
Hand and foot injuries due to lack of protective equipment!
Danger of (serious) injuries during work. Wear the following protective equipment:
• Safety gloves for protection against cuts
• Safety shoes
• Safety helmet must be worn if lifting equipment are used!
NOTICE
Use only properly functioning lifting equipment!
Use only properly functioning lifting equipment to lift and lower the pump. Ensure
that the pump does not become jammed during lifting and lowering. Do not exceed
the maximum bearing capacity of the lifting equipment! Check that lifting equip-
ment is functioning properly before use!
ƒPrepare the operating space/installation location as follows:
–Clean, free of coarse solids
–Dry
–Frost-free
–Decontaminated
ƒTake immediate countermeasures if there is a build-up of toxic or suffocating gases!
ƒUse the handle for lifting, lowering and transporting the pump. Never carry or drag
the pump by the connection cable!
ƒIt must be possible to attach the lifting equipment safely. The storage place and the
operating space/installation site must be accessible by the lifting equipment. The
set-down location must have a firm surface.
ƒAttach the lifting gear to the handle using a shackle. Only use lifting gear which has
been technically approved.
ƒThe laid connection cables must enable safe operation. Check whether the cable
cross-section and the cable length are sufficient for the selected installation type.
ƒThe corresponding IPclass must be observed when using switchgear. Install the
switchgear in an overflow-proof position and away from potentially explosive atmo-
sphere areas!
6.4.1 Maintenance tasks After a storage period of more than 6months, turn the impeller prior to installation.
6.4.1.1 Rotate impeller
WARNING
Sharp edges on the impeller and suction port!
Sharp edges can form on the impeller and suction port. There is danger of limbs be-
ing severed! Protective gloves must be worn to protect from cuts.
‡The pump is not connected to the mains!
‡Protective equipment must be worn!
1. Place the pump on a firm surface in a vertical position.
WARNING!Risk of hands being crushed. Make sure that the pump cannot fall
over or slip!
2. Disassemble the suction strainer.
Loosen the four hexagon nuts on the suction strainer and remove with the washer.
3. Pull off the suction strainer.
4. Reach slowly and carefully into the hydraulics and turn the impeller.
5. Mount the suction strainer.
Push the suction strainer into position. Screw in the four hexagon nuts with wash-
ers and tighten. Max. tightening torque: 20Nm!

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16 WILO SE 2019-10
6.4.2 Portable wet well installation
WARNING
Risk of burns from hot surfaces!
Motor housing can become hot during operation. It may cause burns. Allow the
pump to cool down at ambient temperature after switching it off!
WARNING
Separation of pressure hose!
Separation or movement of the pressure hose can lead to (serious) injuries. Securely
attach the pressure hose to the outlet! Prevent buckling of the pressure hose.
For portable installation, the pump is equipped with a strainer. The strainer filters coarse
solids out of the fluid and enables secure standing if placed on a solid load bearing sur-
face. This allows the pump to be installed anywhere in the operating space/installation
location. To prevent sinking in, a hard base must be used at the installation location in
case of soft load bearing surfaces. A pressure hose or pipework is connected on the
pressure side.
Work steps
1
2
3
4
5
6
7
Fig.3: Wet well installation, portable
1 Pressure hose
2 Storz coupling (pressure hose)
3 Storz coupling (pressure connection)
4 Suction strainer
5 Pump
6 Handle: Attachment point for lifting equipment
7 Connection cable
‡Pressure connection prepared: Hose connection or Storz coupling fitted.
1. Use a shackle to attach the hoisting gear to the attachment point of the pump.
2. Lift and align the pump at the installation location.
3. Place the pump on a solid load bearing surface. CAUTION!Prevent the pump sink-
ing in!
4. Lay the pressure hose and fasten it to a certain point (e.g. drainage).
DANGER!Separation or movement of the pressure hose can lead to (serious) in-
juries! Secure the pressure hose at the outlet.
5. Lay the connection cable properly. CAUTION!Do not damage the connection
cable!
▶ The pump is installed, the qualified electrician can make the electrical connection.
6.4.3 Level control With a level control device, the current fill levels are determined and the pump is
switched on and off automatically depending on the fill levels. Fill levels are recorded by
using different sensor types (float switches, pressure and ultrasound measurements or
electrodes). The following must be observed when using a level control device:
ƒFloat switches can move freely!
ƒThe water level must not fall below the minimum permissible!
ƒThe maximum switching frequency must not be exceeded!
ƒIf the fill levels fluctuate strongly, a level control with two measuring points is re-
commended. This makes it possible to achieve larger differential gaps.
Use of attached float switch
The “A” version is equipped with a float switch. The pump is switched on and off de-
pending on the fill level. The switching level is determined by the cable length of the
float switch.
Use of on-site level controls
When using an on-site level control device, refer to the manufacturer’s own installation
and operating instructions for specifications on the installation.

Installation and electrical connection en
Installation and operating instructions Wilo-Padus PRO 17
6.5 Electrical connection
DANGER
Risk of death due to electrocution!
Improper conduct when carrying out electrical work can lead to death due to electric
shock! Electrical work must be carried out by a qualified electrician in accordance
with the locally applicable regulations.
ƒThe mains connection must match the specifications on the rating plate.
ƒPower supply on mains side for three-phase current motors with clockwise rotating
field.
ƒLay the connection cable in accordance with the locally applicable regulations and
connect it according to the wire assignment.
ƒConnect the monitoring devices and check their function.
ƒEarth the device properly in accordance with applicable local regulations.
6.5.1 Fuse on mains side
Circuit breaker
The size and switching characteristics of the circuit breakers must conform to the rated
current of the connected product. Observe local regulations.
Motor protection switch
Make provision for an on-site motor protection switch for devices without a plug! The
minimum requirement is a thermal relay/motor protection switch with temperature
compensation, differential triggering and anti-reactivation device in accordance with
the local regulations. In case of sensitive mains, make provision for the installation on-
site of other protective equipment (e.g. overvoltage, undervoltage or phase failure re-
lay, etc.).
Residual-current device (RCD)
Comply with the regulations of the local energy supply company! The use of a residual-
current device is recommended.
If persons come into contact with the device and conductive fluids, secure the connec-
tion with a residual-current device (RCD).
6.5.2 Maintenance tasks Check the insulation resistance of the motor winding before installation. If the meas-
ured values differ from the specifications, moisture may have penetrated into the mo-
tor or the connection cable. Contact customer service in the event of a fault.
6.5.2.1 Checking the insulation resistance
of the motor winding Use an insulation tester to measure the insulation resistance (measuring
voltage=1000V). Observe the following values:
ƒAt the time of initial commissioning: Insulation resistance may not be less than
20MΩ.
ƒFor further measurements: Value must be greater than 2MΩ.
NOTICE!For motors with an integrated capacitor, short-circuit the windings prior to
checking!
6.5.3 Three-phase current motor con-
nection NOTICE!A clockwise rotating field must be available to allow the correct direction
of rotation.
NOTICE!The individual wires are identified according to the connection diagram. Do
not cut the wires! There is no further relationship between the wiring diagram and
the connection diagram.

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18 WILO SE 2019-10
Standard version without plug and float switch
bn
bk
M 3~
gn-ye
WV
gy
UPE
Fig.4: Connection diagram for three-phase
current motor without plug and float switch
Wire colour Designation Terminal
Grey (gy) U L1
Black (bk) V L2
Brown (bn) W L3
Green/yellow (gn-ye) Earth PE
The connection cable features bare cable ends. Connection to the mains is established
by connecting the connection cable in the switchgear. Electrical connection must al-
ways be carried out by a qualified electrician!
Version “A” with plug and float switch
3 4 5 2 1
M 3~
gn-ye
WV T2T1UPE
6
S1
Fig.5: Connection diagram for three-phase
current motor with plug and float switch
Wire Designation Terminal
1 U L1
2 V L2
3 W L3
4, 5 T1, T2 Monitoring of motor winding
6 S1 Float switch
Green/yellow (gn-ye) PE Earth
The connection cable is equipped with a CEE plug. The connection to the mains is es-
tablished by inserting the plug into a socket. The plug is not overflow-proof. Install the
socket so that it is overflow-proof! Observe the information on the protection class
(IP) of the plug.
DANGER!If the pump is to be connected directly to the switchgear, arrange for the
electrical connection to be carried out by a qualified electrician!
6.5.4 Motor protection adjustment Motor protection must be set depending on the selected activation type.
6.5.4.1 Direct activation At full load, set the motor protection switch to the rated current (see rating plate). At
partial load, it is recommended to set the motor protection switch 5% above the cur-
rent measured at the duty point.
6.5.5 Soft starter It is not possible to connect the device to a soft starter!
6.5.6 Operation with frequency con-
verter Operation on the frequency converter is not permitted.
7 Commissioning
WARNING
Foot injuries due to a lack of protective equipment!
Danger of (serious) injuries during work. Wear safety shoes!
7.1 Personnel qualifications ƒElectrical work: A qualified electrician must carry out the electrical work.
ƒOperation/control: Operating personnel must be instructed in the functioning of the
complete system.
7.2 Operator responsibilities ƒProviding installation and operating instructions by the pump or at a place specially
reserved for it.

Commissioning en
Installation and operating instructions Wilo-Padus PRO 19
ƒMaking the installation and operating instructions available in the language of the
personnel.
ƒMaking sure that the installation and operating instructions are read and understood
by all personnel.
ƒAll safety devices and emergency cut-outs on the system-side must be active and
checked to ensure that they work properly.
ƒThe pump is suitable for use under the specified operating conditions.
7.3 Direction of rotation check (for
three-phase current motors only) The pump has been checked and adjusted to the correct direction of rotation for a
clockwise rotating field at the factory. Connection is made in accordance with the spe-
cifications in the “Electrical connection” chapter.
Checking the direction of rotation
A qualified electrician checks the rotating field at the mains connection with a rotating-
field testing device. To allow the correct direction of rotation, a clockwise rotating field
must be available at the mains connection. The pump is not approved for operation
with a counter-clockwise rotating field! CAUTION!If the direction of rotation is
checked with a test run, comply with the environmental and operating conditions!
Incorrect direction of rotation
If the direction of rotation is incorrect, exchange the two phases at the mains connec-
tion.
Pumps with CEE plug and phase inverter
AUTO
RESET
180°
ON
OFF
1 2
Fig.6: Phase inverter
1. Insert CEE plug into the socket.
2. Check the control lamp.
⇒ Control lamp off: Direction of rotation correct.
⇒ Control lamp on: Incorrect direction of rotation.
3. Correct the direction of rotation.
⇒ Use a suitable screwdriver to push the phase inverter into the plug and turn by
180°.
▶ Direction of rotation set correctly.
7.4 Operation in an explosive atmo-
sphere Operation in an explosive atmosphere is not permitted.
7.5 Before switching on Check the following prior to activation:
ƒCheck whether the device has been installed properly and in accordance with the
locally applicable regulations:
–Has the pump been earthed?
–Has the power supply cable routing been tested?
–Has the electrical connection been carried out in accordance with regulations?
–Are all mechanical components attached correctly?
ƒCheck level control:
–Can the float switches move freely?
–Have the switching levels been tested (pump on, pump off, minimum water
level)?
–Is additional dry-running protection installed?
ƒCheck the operating conditions:
–Have the min./max. temperatures of the fluid been tested?
–Has the max. immersion depth been checked?
–Is the max. switching frequency complied with?
–Has a hard base been installed in the case of soft flooring?
–Are all gate valves open?

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20 WILO SE 2019-10
7.6 Switching on and off During the start process, the rated current is temporarily exceeded. During operation,
the rated current may no longer be exceeded. CAUTION!If the pump does not start,
switch off the pump immediately. Remove the fault before reactivating the pump!
Pumps with bare cable end
The pump is switched on and off using a separate operating point (on/off switch,
switchgear) provided by the customer.
Pump with attached plug
ƒAfter inserting the plug into the socket, the pump is ready for operation. The pump
is switched on and off with the ON/OFF switch.
Pump with attached float switch and plug
ƒAfter inserting the plug into the socket, the pump is ready for operation. The pump
is controlled via two switches on the plug:
–HAND/AUTO: Determines if the pump is switched on and off directly (HAND) or
depending on the fill level (AUTO).
–ON/OFF: Switches the pump on and off.
7.7 During operation
WARNING
Amputation of limbs due to rotating components!
No persons must be present in the work area of the pump! There is risk of (serious)
injuries due to rotating components! No persons must be present in the work area of
the pump during start-up or operation.
WARNING
Risk of burns from hot surfaces!
Motor housing can become hot during operation. It may cause burns. Allow the
pump to cool down at ambient temperature after switching it off!
When operating the pump, observe the locally applicable regulations on the following
topics:
ƒWorkplace safety
ƒAccident prevention
ƒHandling electrical machines
Strictly comply with the personnel responsibilities specified by the operator. All person-
nel are responsible for ensuring compliance with responsibilities and regulations!
Due to their design, centrifugal pumps have rotating parts that are easily accessible.
Depending on operating conditions, sharp edges can develop on these parts. WARN-
ING!This can lead to cuts and limbs may be severed! Check the following at regular
intervals:
ƒOperating voltage (+/-10% of the rated voltage)
ƒFrequency (+/-2% of the rated frequency)
ƒCurrent consumption between individual phases (max.5%)
ƒVoltage difference between the individual phases (max.1%)
ƒMax. switching frequency
ƒLevel control device/dry-running protection: Switching points
ƒAll gate valves open
8 Shut-down/dismantling
8.1 Personnel qualifications ƒOperation/control: Operating personnel must be instructed in the functioning of the
complete system.
ƒElectrical work: A qualified electrician must carry out the electrical work.
ƒInstallation/dismantling: The technician must be trained in the use of the necessary
tools and fixation materials for the relevant construction site.
8.2 Operator responsibilities ƒLocally applicable accident prevention and safety regulations of trade associations.
ƒObserve regulations for working with heavy loads and under suspended loads.