Wilo Medana CH1-LSP User manual

Pioneering for You
·
Wilo-Medana CH1-LSP
4263617 • Ed.01/08/2023
en Installation and operating instructions

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en
Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023 7
Contents
1 General ........................................................................................8
1.1 About this document ........................................................... 8
1.2 Copyright ............................................................................... 8
1.3 Subject to modifications...................................................... 8
1.4 Warranty and disclaimer ...................................................... 8
2 Safety...........................................................................................8
2.1 Symbols .................................................................................. 8
2.2 Personnel qualifications....................................................... 9
2.3 Safety consciousness on the job ........................................ 9
2.4 Safety instructions for the operator................................... 9
2.5 Safety instructions for installation and maintenance work
...............................................................................................10
2.6 Unauthorised modification of components and use of
unauthorised spare parts ...................................................10
2.7 Improper use........................................................................10
3 Transport and interim storage................................................10
4 Application................................................................................10
5 Product information.................................................................11
5.1 Type key...............................................................................11
5.2 Data table.............................................................................11
5.3 Scope of delivery.................................................................12
5.4 Accessories ..........................................................................12
6 Description and function.........................................................12
6.1 Description of the product ................................................12
6.2 Product characteristics ......................................................13
7 Installation and electrical connection....................................13
7.1 Receipt of the product .......................................................13
7.2 Installation ...........................................................................13
7.3 Hydraulic connections........................................................14
7.4 Electrical connection..........................................................15
8 Commissioning .........................................................................15
8.1 Filling and deaeration.........................................................15
8.2 Starting.................................................................................16
9 Maintenance..............................................................................17
10 Faults, causes and remedies....................................................18
11 Spare parts ................................................................................19
12 Disposal .....................................................................................19

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8 Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023
1 General
1.1 About this document These instructions form part of the product. Adherence to these instructions is a precondi-
tion for the correct handling and application of the product:
•read these instructions carefully before taking any action.
•Always keep the instructions in a place to which there is permanent access.
•Observe all instructions relating to this product.
•Observe the markings on the product.
The language of the original installation and operating instructions is French. All other lan-
guages for these instructions are translations of the original operating instructions.
1.2 Copyright WILO SE ©
The reproduction, distribution and utilisation of this document in addition to communica-
tion of its contents to others without express authorisation is prohibited. Offenders will be
held liable for payment of damages. All rights reserved.
1.3 Subject to modifications Wilo reserves the right to change the above-listed data without prior notice and is not li-
able for technical inaccuracies and/or omissions. The figures used may differ from the ori-
ginal product and are intended for illustrative purposes only.
1.4 Warranty and disclaimer Wilo accepts no liability and provides no guarantee in the following cases:
•Inadequate dimensioning due to insufficient or incorrect information being provided by
the operator or contractor
•Failure to comply with these instructions
•Improper application
•Improper storage or transport
•Incorrect installation or dismantling
•Insufficient maintenance
•Unauthorised repair work
•Insufficient foundations
•Chemical, electrical or electrochemical influences
•Wear
2 Safety This chapter contains essential instructions that must be followed
during the different phases of the pump’s service life. Non-ob-
servance of these instructions may constitute a danger to per-
sons, the environment and the product, and may invalidate the
warranty. Non-observance may lead to the following hazards:
•Injuries due to electrical, mechanical and bacteriological factors
and electromagnetic fields.
•Damage to the environment due to leakage of hazardous ma-
terials.
•Damage to the installation.
•Failure of important product functions.
Also comply with the indications and safety instructions in
other chapters!
2.1 Symbols Symbols:
WARNING
General safety symbol
WARNING
Electrical risks

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Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023 9
NOTICE
Notes
Warnings:
DANGER
Imminent danger.
May result in death or severe injuries if the hazard is not prevented.
WARNING
Non-observance may result in (very) severe injury.
CAUTION
The product risks becoming damaged. “Caution” is used when there is a
risk to the product if the user does not observe procedures.
NOTICE
Note containing useful information for the user about the product. It as-
sists the user in the case of an issue.
2.2 Personnel qualifications The installation, application and maintenance personnel must
have the appropriate qualifications to complete this work. The
operator must ensure the personnel’s areas of responsibility,
terms of reference and their supervision. If the personnel are not
in possession of the necessary knowledge, they are to be trained
and instructed. If necessary, this training can be carried out by the
product’s manufacturer on the operator’s behalf.
2.3 Safety consciousness on
the job
The existing directives for accident prevention must be adhered
to. Danger from electrical current must be eliminated. Local dir-
ectives or general directives [e.g. IEC, VDE etc.] and instructions
from local energy supply companies must be respected.
2.4 Safety instructions for
the operator
This device is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, or a lack of
experience or knowledge, unless they are monitored or have been
given detailed instructions concerning use of the device by a per-
son responsible for their safety.
Children must be supervised to ensure that they do not play with
the device.
•If hot or cold components of the product or installation pose a
danger, it is the customer’s responsibility to guard them against
being touched.

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10 Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023
•Guards protecting against touching moving components (such
as the coupling) must not be removed whilst the product is in
operation.
•Hazardous fluids (i.e. which are explosive, toxic or hot) which
have leaked (e.g. from the shaft seals) must be disposed of so
that they pose no danger to persons or to the environment.
National statutory provisions must be respected.
•Danger from electrical current must be eliminated. Local direct-
ives or general directives [e.g. IEC, VDE etc.] and instructions
from local energy supply companies must be respected.
2.5 Safety instructions for
installation and mainten-
ance work
The operator must ensure that all maintenance and installation
work is carried out by authorised and qualified personnel, who are
sufficiently informed from their own detailed study of the install-
ation and operating instructions. Work on the product/unit must
only be carried out when at a standstill. The procedures described
in the installation and operating instructions for deactivating the
product/installation must always be complied with.
Immediately on conclusion of the work, all safety and protective
devices must be put back in position and recommissioned.
2.6 Unauthorised modifica-
tion of components and
use of unauthorised
spare parts
Unauthorised modification of components and use of unauthor-
ised spare parts will impair the safety of the product/personnel,
and will render the manufacturer’s declarations regarding safety
void. Modifications to the product are only permissible following
consultation with the manufacturer.
Original spare parts and accessories authorised by the manufac-
turer ensure safety. The use of other parts absolves the manufac-
turing company of any and all liability.
2.7 Improper use The operational reliability of the supplied product is only guaran-
teed for conventional use in accordance with Chapter4 of the In-
stallation and operating instructions. The limit values must on no
account fall below or exceed the values specified in the cata-
logue/data sheet.
3 Transport and interim storage When receiving the product, check that it has not been damaged during transport. If any
damage is found, take all necessary measures with the carrier in the time provided.
CAUTION
Risk of material damage
If the delivered material is to be installed at a later date, store it in a dry
place and protect it from impacts and any external influences (humidity,
frost etc.). Temperature range for transport and storage: -30°C to
+60°C.
Handle the product with care so as not to damage it prior to installation.

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Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023 11
4 Application This product is designed for pumping and overpressure of clean water or lightly contamin-
ated water in industrial and agricultural sectors.
CAUTION
Risk of motor heating
A technical opinion is required prior to pumping fluid that is denser than
water.
DANGER
Risk of explosion
Do not use this pump for pumping flammable or explosive liquids.
Fields of application:
•Water supply and pressure boosting
•Industrial systems
•Cooling water circulation systems
•Cleaning and irrigation systems
•Rainwater utilisation (excluding domestic)
5 Product information
5.1 Type key
Example: Medana CH1-LSP 204-6/E/A/8T
Medana Product family (surface pump)
CH Series
C = commercial
H = horizontal pump
1Series level (1 = entry level, 3 = standard level, 5 = premium level)
L
SP
Features
L = long shaft
SP = self-priming
2Volume flow in m3/h
04 Number of impellers
6Pump material: housing / hydraulics
6 = pump housing in stainless steel 1.4301 / composite hydraulics
EType of seal
E = EPDM
V = FKM
A Motor
A = 1~230V, 50Hz
B = 1~220V, 60Hz
E = 3~230/400V, 50Hz
8Maximum pressure of the pump in bar
TConnections
T = Screwed
P = Victaulic
N = With captive nut
5.2 Data table
Maximum utilisation pressure

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12 Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023
Maximum operating pressure Pmax See pump type key on rating plate
Maximum suction pressure in bar 3
Temperature range
Fluid temperature in °C +5…+40
Ambient temperature in °C -15…+40
Electrical data
Motor protection rating See rating plate
Insulation class See rating plate
Frequency See rating plate
Voltage See rating plate
Motor efficiency See rating plate
Other characteristics
Humidity <90% without condensation
Altitude ≤1000m (>1000m on request)
NOTICE
The suction pressure (Pinput) + the pressure at zero delivery rate (Pzero
delivery rate) must always be lower than the maximum permitted oper-
ating pressure (Pmax).
P input + P zero delivery rate ≤ Pmax pump
Refer to the pump rating plate for the maximum operating pressure:
Pmax.
Noise level
Motor power (kW) Frequency (Hz) Phase dB(A) at 1m, BEP tolerance
0–3dB(A)
0.55 50 3 54
0.75 50 3 55
0.55 50 1 53
0.75 50 1 53
0.75 60 1 57
5.3 Scope of delivery •High-pressure multistage centrifugal pump
•Installation and operating instructions for the pump
5.4 Accessories Please consult Wilo catalogue for the list of accessories.
6 Description and function
6.1 Description of the product See Fig.1
1. Suction port
2. Pressure port
3. Filler screw
4. Drainage screw
5. Stage casing
6. Impeller
7. Hydraulic shaft
8. Pump housing
9. Mechanical seal
10. Terminal box
11. Lantern
12. Condensate plugs
See Fig.3a
1. Valve on the suction side
2. Valve on the discharge side

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Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023 13
3. Non-return valve
4. Filler screw
5. Drainage screw
6. Piping or clamp holders
7. Strainer
8. Tank
9. Mains water supply
10. Motor protection switch
11. Lifting hook
6.2 Product characteristics •Multistage centrifugal pump with horizontal shaft, self-priming.
•Suction/discharge ports with screwed connections. Axial suction, radial discharge up-
wards.
•Shaft sealing with mechanical seal.
•Integrated thermal motor protection (single-phase version), automatic reset.
•Condenser integrated into the terminal box (single-phase version).
7 Installation and electrical con-
nection
All installation and electrical connection work must be carried out solely by authorised
and qualified personnel, in accordance with applicable regulations.
WARNING
Physical injuries
The applicable regulations for the prevention of accidents must be com-
plied with.
WARNING
Risk of electric shock
Hazards from electric current must be prevented.
7.1 Receipt of the product Unpack the pump and recycle or dispose of the packaging in an environmentally respons-
ible manner.
7.2 Installation The pump must be installed in a dry, well-ventilated location free of frost on a flat, rigid
surface using the appropriate screws.
CAUTION
Risk of damaging the pump
The presence of foreign matter or impurities in the pump housing may
affect the functioning of the product.
It is recommended to perform any welding and soldering work before in-
stalling the pump.
Rinse the circuit completely before installing and commissioning the
pump.
•The pump must be installed in a place easy to access for the purposes of inspection or
replacement.
•Install the pump on a smooth floor.
•The pump must be fixed in place using the 2holes on the bearing bracket (ØM8 screw)
(Fig.2).
•Ensure there is a minimum distance between the motor fan and any surfaces (Fig.4).
•For heavy pumps, install a lifting hook (Fig.3a, pos.11) in line with the pump shaft to
facilitate its disassembly.
•Remove the condensate plugs (Fig.1 [12]) when the pump is in a condensing environ-
ment. In this case, the motor protection class IP55 will no longer be guaranteed.
•Note that the altitude of the installation site and the water temperature will reduce the
suction capacity of the pump.

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14 Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023
Altitude Loss of height (HA) Temperature Loss of height (HA)
0m 0mCE 20°C 0.20mCE
500m 0.60mCE 30°C 0.40mCE
1000m 1.15mCE 40°C 0.70mCE
1500m 1.70mCE – –
2000m 2.20mCE – –
2500m 2.65mCE – –
3000m 3.20mCE – –
Table1: Reduction in suction altitude
WARNING
Risk of accident due to hot surfaces!
The pump must be installed in such a way that no one can touch the hot
surfaces of the product when it is in operation.
WARNING
Risk of tipping
Ensure that the pump is secured to a flat, rigid surface.
CAUTION
Risk of foreign matter in the pump
Ensure that all blanking plugs are removed from the pump housing be-
fore installation.
NOTICE
Each pump may have been factory-tested to verify its hydraulic per-
formance, and water may be present in the product. For hygiene pur-
poses, the pump should be rinsed before use.
Install insulating material (cork or reinforced rubber) under the pump to avoid noise pollu-
tion and vibrations being transmitted to the installation.
7.3 Hydraulic connections Connections in general
•The weight of the piping should not be borne by the pump (Fig.5).
•Permitted pump installation positions (Fig.8).
•It is recommended to install gate valves on the suction and discharge sides of the pump.
•Use expansion joints to mitigate noise and vibration from the pump if required.
•Seal the piping well using appropriate products.
•Ensure that a system for protection against low water level is installed to prevent the
pump from running dry.
•Limit the horizontal length of the piping and avoid anything that may cause friction loss
(shrinkage, pipe elbows, crushing, etc.).
Suction connections
•The diameter of the suction piping must never be less than the opening of the pump. In
addition, for pumps in the 4m³/h series that have a suction head (HA) greater than 6m,
a piping of a diameter greater than the DN of the pump is recommended in order to limit
friction loss.
•The pump must be the highest point of the installation and the piping must always run
upwards on a rising gradient from the point of use to the pump, in order to prevent air
bubbles forming in the suction pipe (Fig.3b).
•Air must not be allowed to enter the suction piping while the pump is in operation.

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Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023 15
•The installation of a non-return valve in the discharge pipe is recommended to protect
the pump against pressure surges.
•If connected indirectly via a tank, the suction pipe socket must be fitted with a suction
strainer (max. 2mm cross-section) to stop impurities from entering the pump and a
non-return valve.
•If the pump is in suction mode, immerse the strainer (min. 200mm). Ballast the flexible
pipe if necessary.
7.4 Electrical connection
DANGER
Risk of electrocution
In case of a non-compliant electrical connection, there is a risk of elec-
trocution.
■ Have the electrical connection established by an electrician approved
by the local energy supply company in accordance with local regulations.
■ Prior to the electrical connection, the pump must be voltage-free and
protected against unauthorised restart.
■ To ensure safe installation and operation, the pump must be earthed
correctly with the earth terminals of the power supply (Fig.6).
•Verify that the rated current, voltage and frequency used match the information on the
pump’s rating plate.
•The pump must be connected to the power supply using a cable fitted with a socket or a
main switch.
•The three-phase motors must be connected to an authorised protection system. The
rated setting current must match the value indicated on the motor’s sticker.
•Single-phase motors are equipped as standard with thermal motor protection, which
stops the pump if the permissible winding temperature is exceeded and starts it up
again automatically once it has cooled down.
•The connection cable must be placed in such a way that it never comes into contact
with the main sewer system and/or the pump housing and motor frame.
•The pump/installation should be earthed in accordance with local regulations.
•Appropriate measures for protection against insulation malfunctions must be taken. For
example, the use of a residual-current device. The breaking capacities of the overcur-
rent protection devices must be greater than the assumed short-circuit current at the
devices.
•The power supply connection must comply with the wiring diagram (Fig.6).
WARNING
Risk of injuries and water penetration in the connection area
Observe the tightening torques (Fig.7)
Observe the diameter value of the cable gland wiring to ensure IP55 pro-
tection (see Fig.7[E]):
M20 = min. Ø6 – max. Ø12
M25 = min. Ø13 – max. Ø18
It is not permitted to use an external frequency converter to control the pump.
8 Commissioning
8.1 Filling and deaeration
WARNING
Risk of infection
Our pumps may be factory-tested to verify their hydraulic performance.
If some water remains, the pump should be rinsed before use for hygiene
reasons.

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16 Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023
CAUTION
Risk of damage to the pump
Never let the pump run dry. The pump must be filled before starting.
CAUTION
Risk of damage to the pump
Observe the tightening torques of the filler screw (Fig.3a, pos.4) and
drain plug (Fig.3a, pos.5).
Pump in horizontal position in inlet mode (Fig.3a)
Close the gate valves (pos.1+2).
Unscrew the filler screw (pos.4).
Slowly open the valve on the suction side (pos.1).
Close the filler screw again once the water has exited via the screw port (air removed)
(pos.4).
Open the valve on the suction side completely (pos.1).
Open the valve on the discharge side (pos.2).
Pump in horizontal position in suction mode (Fig.3b)
Ensure that all accessories connected to the pump discharge are open (slide valves, valves,
sprinkling guns).
•Open the valve on the discharge side (pos.2).
•Open the valve on the suction side[1].
•Unscrew the filler screw[4] located on the pump housing.
•Completely fill the pump and the suction pipe, which must be fitted with a bottom valve.
•Close the filler screw again[4].
•Using the switch, start the pump for a few seconds. After switching it off, unscrew the
filler screw and add water to completely finish filling the pump.
•When the suction head is greater than 6m, ensure the discharge pipe is kept in a vertical
position and at a minimum height of 500mm until the pump is primed; this will prevent
water from escaping from the pump through the discharge pipe.
Pump in vertical position in inlet mode (Fig.3c)
Close the gate valves (pos.1+2).
Unscrew the plug[5].
Slowly open the valve on the suction side (pos.1).
Close the plug again once the water has exited via the plug opening[5] (air removed).
Open the valve on the suction side completely (pos.1).
Open the valve on the discharge side (pos.2).
8.2 Starting
CAUTION
Risk of damaging the pump
The pump must not be operated at a zero flow rate flow (valve on the
discharge side closed) for more than 10minutes.
We recommend maintaining a minimum discharge of 15% of rated dis-
charge.

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Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023 17
WARNING
Risk of injury
Depending on the operating conditions of the pump or the installation
(the temperature of the discharged liquid and the volume flow), the
pump assembly including the motor may become extremely hot. There is
a real risk of burns when coming into contact with the pump.
CAUTION
Direction of rotation
An incorrect direction of rotation will cause poor pump performance and
may overload the motor.
Checking the direction of rotation (only for three-phase current motors)
By starting the pump up briefly, check whether the direction of rotation of the pump
matches the arrow on the pump’s rating plate. If the direction of rotation is incorrect, swap
2phases in the pump’s terminal box.
NOTICE
Single-phase motors are intended to operate in the correct direction of
rotation.
Open the valve on the discharge side and stop the pump.
In the event of suction installation, at the time of the initial commissioning, the suction
pipework will not be filled so priming may take a few minutes (ensure that the discharge
valve is kept open).
If the water does not exit after 3minutes, switch off the pump and repeat the filling pro-
cedure.
Once the pump has been primed, close the discharge valve completely and then reopen it
to ensure that the pump reaches the maximum performance curve; this is achieved with the
priming valve closed.
Check that the current consumed is less than or equal to that indicated on the motor plate.
9 Maintenance Any maintenance work must be carried out by authorised and qualified staffl!
WARNING
Risk of electric shock
Danger from electrical current must be eliminated. Ensure that the
pump’s power supply is switched off and secured against unauthorised
reactivation before performing any work on the electric system.
WARNING
Risk of burns
In case of high water temperatures and high system pressures, close the
guard valves upstream and downstream of the pump. First, allow pump
to cool down.

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18 Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023
WARNING
Risk of injury
Depending on the operating conditions of the pump or the installation
(the temperature of the discharged liquid and the volume flow), the
pump assembly including the motor may become extremely hot. There is
a real risk of burns when coming into contact with the pump.
•No special maintenance required during operation.
•Pumps that are not being used during periods of frost should be drained to avoid dam-
age.
Close the gate valves, fully open the drainage and filler screws (Fig.1, pos.3 and 4) and
empty the pump.
CAUTION
Risk of damaging the pump
Observe the tightening torques of the filler screw (Fig.1, pos.4) and
drain plug (Fig.3a, pos.5).
10 Faults, causes and remedies WARNING
Risk of electric shock
Danger from electrical current must be eliminated. Ensure that the
pump’s power supply is switched off and secured against unauthorised
reactivation before performing any work on the electric system.
WARNING
Risk of burns
In case of high water temperatures and high system pressures, close the
guard valves upstream and downstream of the pump. First, allow pump
to cool down.
WARNING
Risk of injury
Depending on the operating conditions of the pump or the installation
(the temperature of the discharged liquid and the volume flow), the
pump assembly including the motor may become extremely hot. There is
a real risk of burns when coming into contact with the pump.
Faults Causes Remedies
The pump is not functioning No electrical power supply Check fuses, switches and wiring
The motor protection device has cut off the
power
Eliminate any motor overload
The pump operates but does not
discharge any fluid
Wrong direction of rotation Swap 2phases in the power supply
The piping or parts of the pump are obstructed by
foreign matter
Check and clean the piping and the pump
Presence of air in the suction pipe Make the suction pipe air-tight
Suction pipe too narrow Install wider suction pipe
The pump discharges irregularly The pressure at the pump inlet is insufficient Review the installation conditions and recom-
mendations described in this manual

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Installation and operating instructions • Wilo-Medana CH1-LSP • Ed.01/08/2023 19
Faults Causes Remedies
The suction pipe has a smaller diameter than that
of the pump
The suction pipe must have the same diameter as
the pump suction opening
Air in the suction pipe socket Make the suction pipe socket air-tight
The strainer and the suction pipe are partially
blocked
Dismantle and clean them
Insufficient pressure Incorrect choice of pump Install more powerful pumps
Wrong direction of rotation For the three-phase current version, swap
2phases in the power supply
The flow rate is too low, the suction pipe is
blocked
Clean the suction filter and the suction pipe
The valve is not sufficiently open Open the valve
The pump is obstructed by foreign matter Clean the pump
The pump is vibrating Foreign matter in the pump Remove all foreign matter
The pump is not firmly secured Tighten the anchor screws
The motor is overheating, the mo-
tor protection engages
Voltage too high or too low Check the fusible cut-outs, the wiring and the
connections
Foreign matter in the pump Clean the pump
Ambient temperature too high Provide cooling
If the fault cannot be resolved, please contact the Wilo customer service.
11 Spare parts All spare parts should be ordered directly from the Wilo customer service. To prevent errors,
always quote the data on the pump’s rating plate when making an order. The spare parts
catalogue is available at www.wilo.com
12 Disposal Information on the collection of used electrical and electronic products.
Proper disposal and appropriate recycling of this product prevents damage to the environ-
ment and dangers to your personal health.
NOTICE
Disposal as domestic waste is forbidden!
In the European Union, this symbol can appear on the product, the pack-
aging or the accompanying documentation. It means that the electrical
and electronic products in question must not be disposed of along with
domestic waste.
To ensure proper handling, recycling and disposal of the used products in question, please
note the following points:
•Only hand over these products at designated, certified collecting points.
•Observe the locally applicable regulations! Please consult your local municipality, the
nearest waste disposal site, or the dealer who sold the product to you for information on
proper disposal. For further information on recycling, go to www.wilo-recycling.com.
Subject to change without prior notice.