Wilo Rexa MINI3 User manual

Pioneering for You
Wilo-Rexa MINI3
3094116 • Ed.02/2021-01
en Installation and operating instructions

en
Table of contents
1 Safety ................................................................................. 5
1.1 About these instructions ............................................5
1.2 Identification of safety instructions..........................5
1.3 Personnel qualifications..............................................7
1.4 Fluids hazardous to health..........................................7
1.5 Personal protective equipment..................................7
1.6 Transport and storage .................................................7
1.7 Installation.....................................................................8
1.8 Electrical connection ...................................................8
1.9 During operation ..........................................................8
1.10 Removal .........................................................................9
1.11 Clean and disinfect.......................................................9
1.12 Maintenance tasks .......................................................9
1.13 Commercial use ..........................................................10
1.14 Operating fluid............................................................10
2 Product description and function .................................11
2.1 Description..................................................................11
2.2 Technical data.............................................................12
2.3 Type key ......................................................................12
2.4 Scope of delivery........................................................13
2.5 Functions.....................................................................13
3 Application/use................................................................13
3.1 Intended use................................................................13
3.2 Improper use................................................................14
4 Transport and storage.....................................................15
5 Installation and electrical connection ...........................15
5.1 Installation types ........................................................15
5.2 Installation ...................................................................15
5.3 Electrical connection..................................................17
6 Commissioning.................................................................19
6.1 Before activating.........................................................20
6.2 Switching on and off ..................................................20
6.3 Test run ........................................................................20
6.4 During operation.........................................................21
7 Removal ............................................................................21
7.1 Stationary wet well installation ................................21
7.2 Portable wet well installation....................................22
8 Cleaning ............................................................................22
8.1 Clean pump..................................................................23
8.2 Cleaning the pump interior........................................23
9 Maintenance.....................................................................24
9.1 Operating fluid ............................................................24
9.2 Oil change ....................................................................24

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9.3 General overhaul ........................................................25
10 Faults, causes and remedies ..........................................25
11 Spare parts.......................................................................26
12 Disposal............................................................................26
12.1 Information on the collection of used electrical and
electronic products....................................................26
12.2 Oil .................................................................................27

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Installation and operating instructions Wilo-Rexa MINI3 5
1 Safety
1.1 About these instructions
These instructions form part of the product.
Compliance with the instructions is essential for
correct handling and use:
ƒRead the instructions carefully before all
activities.
ƒKeep the instructions in an accessible place at
all times.
ƒPass the instructions on to a subsequent
owner.
ƒObserve all product specifications.
ƒObserve the markings on the product.
Failure to follow the instructions will result in:
ƒDanger to persons or damage to property.
ƒThe loss of claims for damages.
The creation language of the instructions is Ger-
man. All other languages are a translation.
Replacement of the installation and operating in-
structions
The present installation and operating instruc-
tions can be obtained again via the following
channels:
ƒDownload: http://qr.wilo.com/405
ƒContact the sales company: www.wilo.com/
contact
ƒOrder a free printed copy by e-mail: printpro-
[email protected]
Write your order in German or English. Please
state the following information when order-
ing:
–Article number (see cover)
–Language
–Delivery address
1.2 Identification of safety instructions
In these installation and operating instructions,
safety instructions are displayed as follows:

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6 WILO SE 2021-01
ƒDanger to persons: Safety instructions are
preceded by a corresponding symbol and are
shaded in grey.
ƒDamage to property: Safety instructions start
with a signal word and are displayed without a
symbol.
Signal words
ƒDANGER!
Failure to follow the instructions will result in
serious injuries or death!
ƒWARNING!
Failure to follow the instructions can lead to
(serious) injury!
ƒCAUTION!
Failure to follow the instructions can lead to
potentially irreparable property damage.
ƒNOTICE!
Useful information on handling the product
Symbols
These instructions use the following symbols:
Danger caused by electric
voltages
Danger of explosion
Warning– risk of cuts and similar
injuries
Warning - risk of health damage
Personal protective equipment:
wear protective gloves
Personal protective equipment:
wear face mask
Personal protective equipment:
wear safety goggles
Useful information

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Installation and operating instructions Wilo-Rexa MINI3 7
1.3 Personnel qualifications
ƒPersons aged 16 and over
ƒHave read and understood the installation and
operating instructions
Children and persons with limited abilities in the
household
This device can be used by children from 8years
of age as well as people with reduced physical,
sensory or mental capacities or lack of experi-
ence and knowledge if they are supervised or in-
structed on the safe use of the device and they
understand the dangers that can occur. Children
are not allowed to play with the device. Cleaning
and user maintenance must not be carried out
by children without supervision.
1.4 Fluids hazardous to health
In stagnant water (e.g. pump sump, soakaway,
etc.) germs which are hazardous to health can
form. There is a danger of bacterial infections!
ƒClean and disinfect the product thoroughly
after removal!
ƒInform all persons about the pumped fluid and
the danger it poses!
1.5 Personal protective equipment
Wear the following protective equipment during
transport, installation, removal and mainten-
ance:
ƒSafety shoes: Protection class S1 or P1
ƒProtective gloves (EN388): Category II, mark-
ing 3131X
Wear the following protective equipment during
cleaning operations:
ƒProtective gloves (ENISO374-1): Category C
ƒSafety goggles (EN166): uvex skyguard NT
(Identification marking: W 166 34 F CE)
ƒBreathing protection mask (EN149): 3M Series
6000 with filter 6055 A2
1.6 Transport and storage
ƒWear protective equipment!
ƒAlways carry the product by the handle. Never
carry or pull on the connection cable!

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8 WILO SE 2021-01
ƒClean product and disinfect if necessary!
–Dirt fosters the formation of germs.
–Encrustations may lead to the impeller be-
coming blocked.
1.7 Installation
ƒWear protective equipment!
ƒDo not install damaged or defective products.
ƒIf there is a risk of germ formation, observe
the following points:
–Ensure sufficient air exchange.
–Wear a breathing protection mask e.g. 3M
Series 6000 with filter 6055 A2
1.8 Electrical connection
ƒDo not connect products with a damaged
connection cable! Have the connection cable
replaced by a qualified electrician or the cus-
tomer service.
ƒMains connection with correctly installed pro-
tective earth conductor.
ƒInstall the residual-current device (RCD) with
30mA.
ƒFuse protection at mains connection: max.
16A.
ƒProduct without plug: Electrical connection
must be carried out by a qualified electrician!
1.9 During operation
ƒThe pumping of highly inflammable and ex-
plosive fluids (petrol, paraffin, etc.) in their
pure form is strictly prohibited!
ƒIf persons come into contact with the pumped
fluid (accessible basins*), do not commission
the product.
*Definition of “accessible basins”
Installation sites that can be walked on and dir-
ectly accessed without tools (e.g. ladders):
ƒGarden ponds
ƒPaddling pools
ƒCesspools
ƒFountains, etc.

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Installation and operating instructions Wilo-Rexa MINI3 9
NOTICE!The specifications applicable to
swimming pools also apply to accessible
basins.
1.10 Removal
ƒWear protective equipment!
ƒProduct without plug: Have the connection
cable disconnected from the mains by a quali-
fied electrician.
ƒDepending on the operating mode and dura-
tion, the housing parts become hotter than
40°C (104°F).
–Only touch the product by the carrying
handle.
–Allow product to cool down.
ƒClean the device thoroughly.
ƒIf there is a risk of germ formation, observe
the following points:
–Ensure sufficient air exchange.
–Wear a breathing protection mask e.g. 3M
Series 6000 with filter 6055 A2
–Disinfect product.
1.11 Clean and disinfect
ƒWear protective equipment!
The protective equipment prevents contact
with germs that are hazardous to health and
the disinfectant.
ƒIf a disinfectant is used, follow the manufac-
turer's instructions!
–Wear protective equipment according to the
manufacturer's instructions! If in doubt, ask
your specialist dealer.
–Inform all persons about the disinfectant
and how to use it correctly!
1.12 Maintenance tasks
ƒWear protective equipment!
ƒCarry out maintenance work in a clean, dry and
well-lit place.
ƒOnly original parts of the manufacturer may be
used. The use of any non-original parts re-
leases the manufacturer from any liability.

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10 WILO SE 2021-01
ƒCollect any leakage of fluid and operating fluid
immediately.
1.13 Commercial use
The product is intended for domestic use. The
instructions therefore refer only to the domestic
use of the product.
The product is also suitable for commercial ap-
plications. The following must be observed as
regards commercial use:
ƒThese installation and operating instructions
do not contain the necessary information for
commercial use.
ƒThe staff is trained in the operation of com-
mercial wastewater facilities.
ƒThe operator is responsible for ensuring that
the product meets the necessary require-
ments.
ƒThe product is not suitable for the following
applications:
–Frequency converter operation
–Operation on soft start control
–Operation within potentially explosive at-
mospheres
1.14 Operating fluid
The oil is located in the sealing chamber. It
serves to lubricate the seal on the motor and
pump side.
ƒAbsorb leakages immediately.
ƒIf major leakages occur, contact customer ser-
vice.
ƒIf the seal is defective, the oil enters the
pumped fluid and the sewer.
ƒCollect waste oil by type (unmixed) and dis-
pose of it in accordance with regulations at a
certified collection point.
ƒSkin contact: Rinse skin areas thoroughly with
soap and water. If skin irritation occurs, con-
sult a doctor.
ƒContact with eyes: Remove the contact
lenses. Rinse eye thoroughly with water. If eye
irritation occurs, consult a doctor.