Wilo Flumen OPTI-TR 50-3 120-1 Series User manual

Pioneering for You
·
Wilo-Flumen OPTI-TR 50-3 ... 120-1
Wilo-Flumen EXCEL-TRE 50-3 ... 90-2
6092613 • Ed.01/2022-07
en Installation and operating instructions

Flumen OPTI-TR 50 ... 120
https://qr.wilo.com/919
Flumen OPTI-TR 50 ... 120 (60 Hz)
https://qr.wilo.com/3919
Flumen EXCEL-TRE 50 ... 90
https://qr.wilo.com/914
Flumen EXCEL-TRE 50 ... 90 (60 Hz)
https://qr.wilo.com/3914

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Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07 3
Table of contents
1 General information...................................................................4
1.1 About these instructions ..................................................... 4
1.2 Copyright ............................................................................... 4
1.3 Subject to change................................................................. 4
1.4 Exclusion from warranty and liability.................................4
2 Safety...........................................................................................4
2.1 Identification of safety instructions................................... 4
2.2 Personnel qualifications....................................................... 6
2.3 Personal protective equipment........................................... 7
2.4 Electrical work .......................................................................7
2.5 Monitoring devices ............................................................... 8
2.6 Fluids hazardous to health................................................... 8
2.7 Transport................................................................................ 8
2.8 Installing/dismantling........................................................... 8
2.9 During operation ................................................................... 9
2.10 Maintenance tasks................................................................ 9
2.11 Operating fluid ....................................................................10
2.12 Operator responsibilities....................................................10
3 Transportation and storage.....................................................10
3.1 Delivery.................................................................................10
3.2 Transport..............................................................................10
3.3 Use of lifting equipment....................................................11
3.4 Storage .................................................................................11
4 Application/use.........................................................................12
4.1 Intended use........................................................................12
4.2 Improper use........................................................................12
5 Product description..................................................................12
5.1 Construction........................................................................12
5.2 Monitoring devices .............................................................14
5.3 Operation with frequency converter................................15
5.4 Operation in an explosive atmosphere ............................15
5.5 Rating plate..........................................................................16
5.6 Type key...............................................................................17
5.7 Scope of delivery.................................................................17
5.8 Accessories ..........................................................................17
6 Installation and electrical connection....................................17
6.1 Personnel qualifications.....................................................18
6.2 Operator responsibilities....................................................18
6.3 Installation types.................................................................18
6.4 Installation ...........................................................................18
6.5 Electrical connection..........................................................24
7 Commissioning .........................................................................27
7.1 Personnel qualifications.....................................................27
7.2 Operator responsibilities....................................................27
7.3 Direction of rotation monitoring ......................................27
7.4 Operation in an explosive atmosphere ............................28
7.5 Before switching on............................................................28
7.6 Switch on and off................................................................29
7.7 During operation .................................................................29
8 Shut-down/dismantling...........................................................29
8.1 Personnel qualifications.....................................................29
8.2 Operator responsibilities.....................................................30
8.3 Shut-down............................................................................30
8.4 Removal.................................................................................30
9 Maintenance and repair............................................................32
9.1 Personnel qualifications......................................................32
9.2 Operator responsibilities.....................................................32
9.3 Operating fluid......................................................................32
9.4 Maintenance intervals .........................................................32
9.5 Maintenance measures .......................................................33
9.6 Repairs ...................................................................................36
10 Faults, causes and remedies ....................................................42
11 Spare parts.................................................................................44
12 Disposal......................................................................................44
12.1 Oils and lubricants................................................................44
12.2 Protective clothing ..............................................................44
12.3 Information on the collection of used electrical and elec-
tronic products .....................................................................44
13 Appendix....................................................................................44
13.1 Tightening torques ..............................................................44
13.2 Frequency converter operation..........................................45
13.3 Ex rating.................................................................................45

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4 Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07
1 General information
1.1 About these instructions These instructions form part of the product. Compliance with the instructions is essential
for correct handling and use:
•Read the instructions carefully before all activities.
•Keep the instructions in an accessible place at all times.
•Observe all product specifications.
•Observe the markings on the product.
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 WILO SE © 2022
The reproduction, distribution and utilization of this document as well as the communica-
tion of its contents to others without express authorization is prohibited. Offenders will be
held liable for the payment of damages. All rights reserved.
1.3 Subject to change Wilo shall reserve the right to change the listed data without notice and shall not be liable
for technical inaccuracies and/or omissions. The illustrations used may differ from the ori-
ginal and are intended as an example representation of the device.
1.4 Exclusion from warranty and liabil-
ity
Wilo shall specifically not assume any warranty or liability in the following cases:
•Inadequate configuration due to inadequate or incorrect instructions by the operator or
the client
•Non-compliance with these instructions
•Improper use
•Incorrect storage or transport
•Incorrect installation or dismantling
•Insufficient maintenance
•Unauthorised repairs
•Inadequate construction site
•Chemical, electrical or electrochemical influences
•Wear
2 Safety This section contains basic information about the individual
stages in the life cycle of the pump. Failure to observe this in-
formation leads to:
•Danger to persons
•Danger to the environment
•Property damage
•Loss of claims for damages
2.1 Identification of safety
instructions
These installation and operating instructions set out safety in-
structions for preventing personal injury and damage to property.
These safety instructions are shown differently:
•Safety instructions relating to personal injury start with a signal
word, are preceded by a corresponding symbol and are shaded
in grey.
DANGER
Type and source of the danger!
Consequences of the danger and instructions for avoidance.
•Safety instructions relating to property damage start with a
signal word and are displayed without a symbol.

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Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07 5
CAUTION
Type and source of the danger!
Consequences or information.
Signal words
•DANGER!
Failure to observe the safety instructions will result in serious
injuries or death!
•WARNING!
Failure to follow the instructions can lead to (serious) injuries!
•CAUTION!
Failure to follow the instructions can lead to property damage
and a possible total loss.
•NOTICE!
Useful information on handling the product
Markups
✓Prerequisite
1. Work step/list
⇒Notice/instructions
▶Result
Identifying cross references
The name of the section or table is in inverted commas [“ ”]. The
page number follows in square brackets [].
Symbols
These instructions use the following symbols:
Danger of electric voltage
Danger of bacterial infection
Danger – explosive atmosphere
General warning symbol
Warning of cutting injuries
Warning of hot surfaces
Warning of high pressure
Warning of suspended loads

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6 Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07
Personal protective equipment: wear a safety helmet
Personal protective equipment: wear foot protection
Personal protective equipment: wear hand protection
Personal protective equipment: wear safety harness
Personal protective equipment: wear mouth protec-
tion
Personal protective equipment: wear safety goggles
Working alone is prohibited! A second person must be
present.
Useful information
2.2 Personnel qualifications •Personnel have been instructed on locally applicable regula-
tions governing accident prevention.
•Personnel have read and understood the installation and oper-
ating instructions.
•Electrical work: qualified electrician
Person with appropriate technical training, knowledge and ex-
perience who can identify and prevent electrical hazards.
•Installation/dismantling work: trained sewage technology pro-
fessional
Fixation to different construction parts, lifting equipment,
wastewater facility basics
•Maintenance work: trained sewage technology professional
Application/disposal of operating fluids used, basic engineering
knowledge (installation/dismantling)
•Lifting work: trained specialist for the operation of lifting
devices
Lifting equipment, lifting gear, attachment points
Children and persons with limited abilities
•Persons under the age of 16: Use of this product is prohibited.
•Persons under the age of 18: Supervise them during use of the
product (supervisor)!
•Persons with limited physical, sensory or mental capacities: Use
of this product is prohibited!

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Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07 7
2.3 Personal protective
equipment
The protective equipment specified is the minimum requirement.
Observe the requirements of the work regulations.
Protective equipment: Transport, installation, removal and
maintenance
•Safety shoes: Protection class S1 (uvex 1 sport S1)
•Protective gloves (EN388): 4X42C (uvex C500 wet)
•Safety helmet (EN397): Conforms to standards, protection
against lateral deformation (uvex pheos)
(If lifting equipment is used)
Protective equipment: Cleaning work
•Protective gloves (ENISO374-1): 4X42C + Type A (uvex pro-
tector chemical NK2725B)
•Safety goggles (EN166): (uvex skyguard NT)
–Labelling frame: W 166 34 F CE
–Labelling disc: 0-0.0* W1 FKN CE
* Protection level according to EN170 not relevant for this
work.
•Breathing protection mask (EN149): Half mask 3M series 6000
with filter 6055 A2
Article recommendations
The branded products in the parentheses constitute non-binding
suggestions. Similar products from other brands can also be used.
Adherence to the standards mentioned is required.
WILO SE does not assume any liability for the adherence of the
aforementioned products to the corresponding standards.
2.4 Electrical work •Electrical work must be carried out by a qualified electrician.
•Disconnect device from the mains and secure it against being
switched on again without authorisation.
•Observe applicable local regulations when connecting to the
mains power supply.
•Comply with the requirements of the local energy supply com-
pany.
•Train personnel on how to make electrical connections.
•Train personnel on the options for switching off the device.
•Observe the technical information in these installation and op-
erating instructions as well as on the rating plate.
•Earth the device.
•Observe provisions for connection to the electrical switching
system.
•Comply with the specifications on electro-magnetic compatib-
ility when using electronic start-up controllers (e.g. soft starter
or frequency converter). If required, take special measures into
account (e.g. shielded cables, filters, etc.).
•Replace defective connection cables. Contact customer service.

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8 Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07
2.5 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/mo-
tor protection switch with temperature compensation, differen-
tial 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. over-
voltage, undervoltage or phase failure relay, etc.).
Residual-current device (RCD)
•Install a residual-current device (RCD) in accordance with the
regulations of the local energy supply company.
•If people can come into contact with the device and conductive
fluids, install a residual-current device (RCD).
2.6 Fluids hazardous to
health
Hazardous germs form in sewage or in stagnant water. There is a
danger of bacterial infections!
•Wear protective equipment!
•Clean and disinfect the product thoroughly after removal!
•Inform all persons about the pumped fluid and the danger it
poses!
2.7 Transport •Locally applicable laws and regulations on work safety and ac-
cident prevention must be complied with.
•Demarcate and cordon off the working area.
•Keep unauthorised persons away from the working area.
•Always attach the lifting gear to the attachment points.
•Ensure that the lifting gear is securely attached.
•Observe packaging instructions:
–Impact-resistant
–Ensure that the product is properly fixed in place.
–Protect it against dust, oil and moisture.
2.8 Installing/dismantling •Wear a safety harness.
•Locally applicable laws and regulations on work safety and ac-
cident prevention must be complied with.
•Demarcate and cordon off the working area.
•Keep working area free from ice.
•Remove objects lying around from the work area.
•Keep unauthorised persons away from the working area.

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Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07 9
•If the weather conditions mean it is no longer possible to work
safely, stop work.
•Work must always be carried out by two persons.
•When working at a height of more than 1m (3ft) above the
ground, use scaffolding with a safety harness.
•Ensure enclosed spaces have sufficient ventilation.
•Toxic or asphyxiating gases may build up in enclosed spaces or
buildings. Observe protective measures in accordance with
work regulations, e.g. carry a gas detector with you.
•If there is a risk of explosion, do not carry out welding work or
work with electrical devices.
•Disconnect device from the mains and secure it against being
switched on again without authorisation.
•All rotating parts must stop.
•Disinfect product.
2.9 During operation •Demarcate and cordon off the working area.
•No persons are allowed in the working area during operation.
•Depending on the process, the product is activated and deac-
tivated using separate controls. The product may automatically
be activated following power cuts.
•If the motor emerges, the motor housing can heat up to above
40°C (104°F).
•Superior must be informed immediately of any faults or irregu-
larities.
•The product must be switched off immediately if faults occur.
•Propeller must not crash into fixtures or walls. Observe defined
clearances in accordance with consulting documents.
•Observe required water immersion. If water level varies signific-
antly, use level monitoring.
•Sound-pressure level depends on several factors (installation,
duty point, etc.). Measure the current noise level under operat-
ing conditions. Wear hearing protection at noise levels of
85dB(A) and over. Demarcate the working area!
2.10 Maintenance tasks •Disconnect device from the mains and secure it against being
switched on again without authorisation.
•Disinfect product.
•Carry out maintenance work in a clean, dry and well-lit place.
•Only carry out maintenance tasks described in these installation
and operating instructions.
•Only original parts of the manufacturer may be used. The use of
any non-original parts releases the manufacturer from any liab-
ility.
•Collect any leakage of fluid and operating fluid immediately and
dispose of it according to the locally applicable guidelines.

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10 Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07
2.11 Operating fluid The seal housing is filled with white oil. The gear and the pre-
chamber are filled with gear oil.
•Absorb leakages immediately.
•If major leakages occur, contact customer service.
•If the seal is defective, the oil enters the pumped fluid.
•Skin contact: Rinse skin areas thoroughly with soap and water.
If skin irritation occurs, consult a doctor.
•Contact with eyes: Remove the contact lenses. Rinse eye thor-
oughly with water. If eye irritation occurs, consult a doctor.
2.12 Operator responsibilities •Provide installation and operating instructions in a language
which the personnel can understand.
•Make sure that the personnel have received the required train-
ing for the specified work.
•Provide protective equipment. Ensure that the protective
equipment is worn by personnel.
•Ensure that safety and information signs mounted on the
device are always legible.
•Train the personnel on how the system operates.
•Fit dangerous components within the system with an on-site
guard.
•Demarcate and cordon off the working area.
•Measure the noise level. At noise levels of 85dB(A) and over,
wear hearing protection. Demarcate the working area!
3 Transportation and storage
3.1 Delivery •After receiving the shipment, check it immediately for defects (damage, completeness).
•Defects must be noted on the freight documentation.
•Defects must be notified to the transport company or the manufacturer on the day of
receipt of shipment.
•Subsequently notified defects can no longer be asserted.
3.2 Transport
NOTICE
Transporting mixers without attachment points
Mixers for ground and wall fixation have no in-built frame and therefore
no attachment point. Transport the mixer on the pallet to the installation
site. Have one or two persons position the mixer at the installation site.
Bear in mind the weight of the mixer!

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Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07 11
Fig.1: Attachment point
•Wear protective equipment! Observe the work regulations.
–Protective gloves: 4X42C (uvex C500 wet)
–Safety shoes: Protection class S1 (uvex 1 sport S1)
•Attach the mixer to the attachment point.
•Protect the connection cable against water ingress.
•Only remove the outer packaging at the site of use to ensure that the mixer is not dam-
aged during transport.
•Use tear-proof plastic sacks of sufficient size to package used mixers for transport in a
leak-proof manner.
3.3 Use of lifting equipment If lifting equipment (lifting device, crane, chain hoist…) is used, observe the following
points:
•Wear a safety helmet according to EN397!
•Comply with local regulations on the use of lifting equipment.
•The technically correct use of the lifting equipment is the operator’s responsibility!
•Lifting gear
–Use legally specified and approved lifting gear.
–Select lifting gear based on the attachment point.
–Attach lifting gear to the attachment point according to local regulations.
•Lifting equipment
–Check for proper function before use!
Only use properly functioning lifting equipment!
–Sufficient bearing capacity.
–Ensure stability during use.
•Lifting operation
–Do not jam the product when lifting and lowering it.
–Do not exceed the max. permissible bearing capacity!
–If necessary (e.g. blocked view), assign a second person to coordinate.
–No one should stand under suspended loads!
–Do not move loads over workplaces where persons are present!
3.4 Storage
DANGER
Danger due to fluids which are hazardous to health!
Danger of bacterial infection!
• Disinfect the mixer after removal.
• Observe the specifications of the work regulations.
WARNING
Risk of injury from sharp edges!
Sharp edges can form on the propeller blades. There is a danger of cuts
and similar injuries!
• Wear protective gloves!
CAUTION
Total damage from to moisture ingress
Moisture ingress in the connection cable damages the connection cable
and the mixer! Never immerse the end of the connection cable in a fluid
and firmly seal it during storage.

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12 Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07
•Securely position the mixer horizontally on a firm bearing surface.
•Secure the mixer against falling over and slipping.
•Do not set the mixer down on the propeller. In the case of larger propeller diameters, en-
sure an appropriate platform is provided.
CAUTION!Material damage! Propeller and shaft can be damaged.
•Store the mixer for a maximum of one year. Contact customer service before storing the
device for more than one year.
•Storage conditions:
–Maximum: -15 to +60°C (5 to 140°F), max. humidity: 90%, non-condensing.
–Recommended: 5 to 25°C (41 to 77°F), relative humidity: 40 to 50%.
–Protect the mixer from direct exposure to sunlight. Extreme heat can cause damage!
•Do not store the mixer in rooms in which welding work is carried out. The resulting gases
or radiation can corrode the elastomer parts and coatings.
•Protect the connection cable against kinking and damage. Maintain a constant bend ra-
dius!
•Turn the propeller at regular intervals (twice a year). This prevents the bearings from
jamming and renews the lubrication film on the mechanical seal. NOTICE!Wear pro-
tective gloves!
4 Application/use
4.1 Intended use For suspension and homogenisation in commercial areas of:
•Process sewage
•Sewage containing faeces
•Wastewater (with small amounts of sand and gravel)
Comply with the specific dimensioning based on the operator requirements. Any other use
deviating from this is regarded as non-compliant with the intended use.
4.2 Improper use
The mixers must not be used in:
•Drinking water
•Non-Newtonian fluids
•Severely contaminated fluids containing hard components such as stone, wood, metals,
etc.
•Highly flammable and explosive fluids in pure form
5 Product description
5.1 Construction The submersible mixer consists of the following main components:
1
2
345
6
7
8 9
Fig.2: Overview of the submersible mixer
1 Propeller
2 Gear, single-stage
3 Pencil electrode (optional)
4 Sealing chamber
5 Motor
6 Frame for lowering device
7 Handle grip
8 Connection cable
9 Pre-chamber
5.1.1 Motor Wilo-Flumen OPTI-TR...
Surface-cooled submersible motor in three-phase current design with permanently lubric-
ated und large-size rolling bearings. The motor winding is equipped with temperature
monitoring. The motor heat is given off directly to the surrounding fluid via the motor
housing. The connection cable is designed for heavy mechanical loads, sealed water pres-

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Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07 13
sure-tight against the fluid and is sealed longitudinally watertight. The connection cable
has bare cable ends and is 10m (33ft) long as standard.
Wilo-Flumen EXCEL-TRE...
Surface-cooled submersible motor in three-phase current design with permanently lubric-
ated und large-size rolling bearings. The motor winding is equipped with temperature
monitoring. The motor heat is given off directly to the surrounding fluid via the motor
housing. The connection cable is designed for heavy mechanical loads, sealed water pres-
sure-tight against the fluid and is sealed longitudinally watertight. The connection cable
has bare cable ends and is 10m (33ft) long as standard.
The submersible motor meets the IE3/IE4 motor efficiency class (according to
IEC60034-30). Motors of the motor efficiency class “IE4” have been specified as “E4” in
the motor designation.
Technical data
Operating mode, immersed S1
Operating mode, non-immersed -
Fluid temperature 3 … 40°C (37 … 104 °F)
Max. immersion depth 20m (66ft)
Protection class IP68
Insulation class H
Max. switching frequency 15/h
5.1.2 Gear Single-stage planetary gear with exchangeable transmission. Gear bearings have been di-
mensioned large to absorb resulting stirring forces and not transfer these to the motor
bearing.
5.1.3 Seal The system is sealed by a 3-chamber system:
•Pre-chamber
The high-volume pre-chamber has been filled with gear oil to absorb any leakage at the
seal on the fluid side. A mechanical seal is used as the seal on the fluid side. A rotary
shaft seal seals towards the gear chamber.
•Gear chamber
The gear chamber has been filled with gear oil to guarantee continuous lubrication of
the planetary gear and the gear bearings. A mechanical seal seals towards the sealing
chamber.
•Sealing chamber
The high-volume sealing chamber is filled with white oil and absorbs any leakage from
the gear chamber. A rotary shaft seal seals towards the motor.
5.1.4 Propeller Propeller made of solid or composite material with clogging-free propeller geometry.
OPTI-TR50-3... EXCEL-TRE50-3... OPTI-TR60-3... EXCEL-TRE60-3... OPTI-TR80-3... OPTI-TR90-2... EXCEL-TRE90-2... OPTI-TR120-1...
Nominal diameter in mm (in) 500
(20)
500
(20)
600
(23.5)
600
(23.5)
800
(31.5)
900
(35.5)
900
(35.5)
1200
(47)
Number of blades 3 3 3 3 3 2 2 3

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14 Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07
5.1.5 Materials
OPTI-TR50-3... EXCEL-TRE50-3... OPTI-TR60-3... EXCEL-TRE60-3... OPTI-TR80-3... OPTI-TR90-2... EXCEL-TRE90-2... OPTI-TR120-1...
Housing
EN-GJL-250 (ASTM A48 Class 35/40B) • • • • • • • •
Seal, on the fluid side
SiC/SiC • • • • • • • •
Seal, pre-/gear chamber
FPM (FKM) • • • • • • • •
Seal, gear/sealing chamber
SiC/SiC • • • • • • • •
Seal, sealing chamber/motor
FPM (FKM) • • • • • • • •
Propeller
1.4408 (ASTMA351) • • • • • − − −
PUR/GFK (PUR/GFRP) − − − − − • • −
PA6G − − − − − − − •
• = standard, − = not available
5.2 Monitoring devices Overview of possible monitoring devices for submersible mixers without Ex rating:
OPTI-TR50-3... EXCEL-TRE50-3... OPTI-TR60-3... EXCEL-TRE60-3... OPTI-TR80-3... OPTI-TR90-2... EXCEL-TRE90-2... OPTI-TR120-1...
Motor compartment/sealing chamber o o o o − o o −
Pre-chamber (external pencil electrode) o o o o o o o o
Motor winding: Temperature limiter • • • • • • • •
Motor winding: Temperature controller and
limiter
oooooooo
Key
− = not possible, o = optional, • = standard
Overview of possible monitoring devices for submersible mixers with Ex rating:
OPTI-TR50-3... EXCEL-TRE50-3... OPTI-TR60-3... EXCEL-TRE60-3... OPTI-TR80-3... OPTI-TR90-2... EXCEL-TRE90-2... OPTI-TR120-1...
Motor compartment/sealing chamber − − − − − − − −
With IECEx certification
Motor winding: Temperature limiter o o o o − o o −
Motor winding: Temperature controller and
limiter
••••−••−
Pre-chamber (external pencil electrode) o o o o o o o o
With ATEX approval

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Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07 15
OPTI-TR50-3... EXCEL-TRE50-3... OPTI-TR60-3... EXCEL-TRE60-3... OPTI-TR80-3... OPTI-TR90-2... EXCEL-TRE90-2... OPTI-TR120-1...
Motor winding: Temperature limiter o o o o o o o o
Motor winding: Temperature controller and
limiter
••••••••
Pre-chamber (external pencil electrode) o o o o o o o o
With FM approval
Motor winding: Temperature limiter • • • • • • • •
Motor winding: Temperature controller and
limiter
oooooooo
Pre-chamber (external pencil electrode) • • • • • • • •
With CSA Ex rating
Motor winding: Temperature limiter • • • • • • • •
Motor winding: Temperature controller and
limiter
oooooooo
Pre-chamber (external pencil electrode) o o o o o o o o
Key
− = not possible, o = optional, • = standard
All the monitoring devices fitted must always be connected!
Monitoring the motor compartment and sealing chamber
The motor compartment monitoring protects the motor winding from short-circuits. Seal-
ing chamber control detects fluid ingress from the gear chamber. In each case, the humidity
is recorded by an electrode in the motor compartment and sealing chamber.
NOTICE!The Ex version does not feature this monitoring unit!
Motor winding monitoring
Thermal motor monitoring protects the motor winding from overheating. A temperature
limiter with a bimetallic strip is fitted as standard. Once the activation temperature has
been reached, deactivation with reactivation lock must take place.
Optionally, the temperature can also be measured using a PTC sensor. Thermal motor mon-
itoring can also be designed as temperature control. This allows two temperatures to be
measured. Once the low activation temperature has been reached, an automatic reactiva-
tion can be initiated after the motor has cooled down. The unit is forced to deactivate with
reactivation lock once the high activation temperature has been reached.
External monitoring of the pre-chamber
The pre-chamber can be equipped with an external pencil electrode. The electrode re-
gisters fluid ingress through the mechanical seal on the fluid side. An alarm or deactivation
of the mixer can therefore occur via the system controller.
5.3 Operation with frequency con-
verter
Operation on the frequency converter is permitted. Refer to the appendix for the relevant
requirements!
5.4 Operation in an explosive atmo-
sphere
Approval according to
OPTI-TR50-3... EXCEL-TRE50-3... OPTI-TR60-3... EXCEL-TRE60-3... OPTI-TR80-3... OPTI-TR90-2... EXCEL-TRE90-2... OPTI-TR120-1...
IECEx o o o o − o o −

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16 Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07
Approval according to
OPTI-TR50-3... EXCEL-TRE50-3... OPTI-TR60-3... EXCEL-TRE60-3... OPTI-TR80-3... OPTI-TR90-2... EXCEL-TRE90-2... OPTI-TR120-1...
ATEX o o o o o o o o
FM oooooooo
CSA-Ex o − o − o o − o
Legend
− = not available/possible, o = optional, • = standard
Identification of Ex-rated mixers
If the mixer is approved for use in explosive atmospheres, this is marked on the rating plate
as follows:
•“Ex” symbol of the corresponding approval
•Ex classification
Observe the explosion protection section!
IECEx certification
The mixers are suitable for operation in potentially explosive atmospheres:
•Device group: II
•Category: 2, zone 1 and zone 2
Mixers must not be used in zone0!
ATEX approval
The mixers are suitable for operation in potentially explosive atmospheres:
•Device group: II
•Category: 2, zone 1 and zone 2
Mixers must not be used in zone0!
FM approval
The mixers are suitable for operation in potentially explosive atmospheres:
•Protection class: Explosionproof
•Category: Class I, Division 1
Notice: If the cabling is carried out according to Division 1, installation in Class I, Division
2 is also permitted.
CSA Ex rating
The mixers are suitable for operation in potentially explosive atmospheres:
•Protection class: Explosion-proof
•Category: Class 1Division 1
5.5 Rating plate The following is an overview of the abbreviations and associated data on the rating plate:
Rating plate
designation
Value
P-Typ Mixer type
M-Typ Motor type
S/N Serial number
MFY Date of manufacture*
n Speed
T Max. fluid temperature
IP Protection class
INRated current
IST Starting current
ISF Rated current at service factor
P2Rated power

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Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07 17
Rating plate
designation
Value
U Rated voltage
f Frequency
Cos φ Motor efficiency
SF Service factor
OTSOperating mode: immersed
OTEOperating mode: non-immersed
AT Starting mode
m Weight
*The date of manufacture is stated in accordance with ISO8601: JJJJWww
•JJJJ = year
•W = abbreviation for week
•ww = calendar week
5.6 Type key Wilo-Flumen OPTI-TR...
Example: Wilo-Flumen OPTI-TR 50-3.23-6/16Ex S17
Flumen Submersible mixer, horizontal
OPTI-TR Series: Mixer with standard asynchronous motor
50 x10 = nominal propeller diameter in mm
3Model
23 x10 = nominal propeller speed in rpm
6Number of poles
16 x10 = stator pack length in mm
Ex Ex-rated
S17 Propeller code for special propeller (omitted for standard propeller)
Wilo-Flumen EXCEL-TRE...
Example: Wilo-Flumen EXCEL-TRE 50-3.23-6/16Ex S17
Flumen Submersible mixer, horizontal
EXCEL-TRE Series: Mixer with IE3/IE4 asynchronous motor
50 x10 = nominal propeller diameter in mm
3Model
23 x10 = nominal propeller speed in rpm
6Number of poles
16 x10 = stator pack length in mm
Ex Ex-rated
S17 Propeller code for special propeller (omitted for standard propeller)
5.7 Scope of delivery •Submersible mixer with attached propeller and connection cable
•Accessories attached, depending on the installation type
•Installation and operating instructions
5.8 Accessories •Mounting bracket for wall and floor fixation
•Lowering device
•Auxiliary lifting device
•Cable bollard to secure the hoist cable
•Adjustable stop
•Additional rope anchoring
•Fixation sets with anchor bolts

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18 Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07
6 Installation and electrical con-
nection
6.1 Personnel qualifications •Electrical work: qualified electrician
Person with appropriate technical training, knowledge and experience who can identify
and prevent electrical hazards.
•Installation/dismantling work: trained sewage technology professional
Fixation to different construction parts, lifting equipment, wastewater facility basics
•Lifting work: trained specialist for the operation of lifting devices
Lifting equipment, lifting gear, attachment points
6.2 Operator responsibilities •Observe locally applicable accident prevention and safety regulations.
•Observe all regulations for working with heavy loads and under suspended loads.
•Provide protective equipment. Ensure that the protective equipment is worn by person-
nel.
•Demarcate the working area.
•Keep unauthorised persons away from the working area.
•If the weather conditions (e.g. ice formation, strong wind) mean it is no longer possible
to work safely, stop work.
•Observe local sewage technology regulations for the operation of sewage systems.
•Structural components and foundations must be of sufficient stability in order to allow
the device to be fixed in a secure and functional manner. The operator is responsible for
the provision and suitability of the structural component/foundation!
•Check that the available consulting documents (installation plans, installation location,
inflow conditions) are complete and accurate.
6.3 Installation types •Stationary ground and wall fixation
The installation type depends on the propeller diameter and basin geometry.
•Flexible installation with lowering device
6.4 Installation
DANGER
Danger due to fluids hazardous to health during installation!
Ensure that the installation site is clean and disinfected during installa-
tion. If contact with fluids that are hazardous to health is possible, ob-
serve the following points:
• Wear protective equipment:
– sealed safety goggles
– mouth protection
– protective gloves
• Wipe up drips immediately.
• Observe the specifications of the work regulations.
DANGER
Risk of fatal injury due to dangerous lone working practices!
Work in chambers and narrow rooms as well as work involving risk of fall-
ing are dangerous work. Such work may not be carried out autonom-
ously!
• Only carry out work with another person!

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Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07 19
CAUTION
Material damage due to incorrect fixation
Defective fixation may limit the functionality of the mixer or damage it.
• If the mixer is fixed to a concrete structure, use anchor bolts for fixa-
tion. Follow the manufacturer’s installation instructions! Temperature
specifications and hardening periods must be strictly observed.
• If the mixer is fixed to a steel structure, ensure that the structure is
sufficiently strong. Use fixation materials with sufficient strength!
Use suitable materials to avoid electrochemical corrosion!
• Tighten all screwed connections. Observe torque specifications.
•Wear protective equipment! Observe the work regulations.
–Protective gloves: 4X42C (uvex C500 wet)
–Safety shoes: Protection class S1 (uvex 1 sport S1)
–Wear a safety harness.
–Safety helmet: EN397 Conforms to standards, protection against lateral deformation
(uvex pheos)
(When using lifting equipment)
•Prepare the installation site:
–Clean, free of coarse solids
–Dry
–Frost-free
–Disinfected
•Work must always be carried out by two persons.
•Demarcate the working area.
•Keep unauthorised persons away from the working area.
•From a working height of more than 1m (3ft) above the ground, use scaffolding with a
safety harness.
•Toxic or asphyxiating gases may build up during work:
–Observe protective measures in accordance with work regulations (gas measurement,
carry a gas detector with you).
–Ensure adequate ventilation.
–If toxic or asphyxiating gases accumulate, leave the workplace immediately!
•Install lifting equipment: even surface, clean, firm base. Warehouse and installation loca-
tion must be easily accessible.
•Attach chain or wire rope to handle/attachment point with a shackle. Only use lifting
gear that has been technically approved.
•Do not stay within the swivel range of the hoisting gear.
•All connection cables must be laid properly. The connection cables must not pose any
risk (i.e. tripping, damage during operation). Check whether the cable cross-section and
the cable length are sufficient for the selected installation type.
•Observe minimum clearances to walls and any fixtures.
6.4.1 Maintenance tasks After a storage period of more than 12months, carry out the following maintenance tasks
before installation:
•Rotate propeller.
See section “Rotating the propeller [}33]”.
•Oil change in sealing, gear and pre-chamber.
See section “Oil change [}35]”.

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20 Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07
6.4.2 Installation on the basin wall
Fig.3: Mixer installed on the basin wall with a
mounting bracket
In this type of installation, the mixer is mounted either on a separate mounting bracket or
directly on the basin wall. The separate mounting bracket can be used to adjust the angle of
the mixer either vertically or horizontally. The design of the basin determines the installation
position and angle. Lay the connection cable against the basin wall and lead it upwards.
✓Operating space/installation location is prepared for the installation. Defined clearances
to fixtures and basin walls are kept in accordance with the consulting documents.
✓Mixer is not connected to the mains.
✓For installation at heights over 1m, use scaffolding with a safety harness.
1. Position the mixer at the basin wall using hoisting gear and mark the mounting holes.
2. Set the mixer down outside of the working area.
3. Drill fixation holes and insert anchor bolts. NOTICE!Follow the manufacturer’s installa-
tion instructions!
4. Once the anchor bolts have hardened in place, use the hoisting gear to place the mixer
on the anchor bolts.
5. Attach the mixer firmly to the basin wall using the fixation material. NOTICE!Follow the
manufacturer’s installation instructions!
6. Lay the connection cable against the basin wall so that it is slightly taut. CAUTION!If
the connection cable leads over the edge of the basin, beware of potential abrasion.
Sharp edges may damage the connection cable. Bevel the basin edge if necessary!
7. Apply corrosion protection (e.g. Sikaflex): Fill the slotted holes on the motor flange up to
the washer.
▶Mixer is installed. Make the electrical connection.
6.4.3 Installation on the basin floor with
mounting bracket (OPTI-TR/EX-
CEL-TRE 50-3 only)
Fig.4: Mixer installed at the bottom of the
basin with a mounting bracket
In this type of installation, the mixer is mounted to the bottom of the basin using a bracket.
CAUTION!If the mixer is ordered for ground installation, the mounting bracket comes
pre-assembled. If the mixer is delivered without a mounting bracket, order the appropri-
ate mounting bracket from customer service! Lay the connection cable along the basin
floor and upwards up the basin wall.
✓Operating space/installation location is prepared for the installation. Defined clearances
to fixtures and basin walls are kept in accordance with the consulting documents.
✓Mixer is not connected to the mains.
✓Mounting bracket mounted on the mixer.
1. Use hoisting gear to position the mixer on the basin floor and mark 2fixation holes.
2. Set the mixer down outside of the working area.
3. Drill fixation holes and insert anchor bolts. NOTICE!Follow the manufacturer’s installa-
tion instructions!
4. Once the anchor bolts have hardened in place, use the hoisting gear to place the mixer
on the anchor bolts.
5. Attach the mixer firmly to the basin floor using the fixation material. NOTICE!Follow
the manufacturer’s installation instructions!
6. Lay the connection cable against the basin floor and the basin wall so that it is slightly
taut. CAUTION!If the connection cable leads over the edge of the basin, beware of
potential abrasion. Sharp edges may damage the connection cable. Bevel the basin
edge if necessary!
7. Apply corrosion protection (e.g. Sikaflex):
- Joint sealant between mounting bracket and structure.
- Fill holes in the baseplate of the mounting bracket.
- Fill scratches in the mounting bracket.
▶Mixer is installed. Make the electrical connection.