WilTec 51552 User manual

Operation Manual
Waste Water Pump
51552, 51553
Illustration similar, may vary depending on model
Read and follow the operating instructions and safety information before using for the first time.
Technical changes reserved!
Due to further developments, illustrations, functioning steps and technical data can differ insignificantly.
Updating the documentation
If you have suggestions for improvement or have found any irregularities, please contact us.

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The information contained in this document may alter at any time without previous notice. It is prohibited
to copy or spread any parts of this document in any way without prior written allowance. All rights re-
served.
The WilTec Wildanger Technik GmbH cannot be held accountable for any possible mistakes in this
operating manual, nor in the diagrams and figures shown.
Even though, the WilTec Wildanger Technik GmbH has undergone biggest possible efforts to ensure
that the operating manual is complete, faultless and up to date, mistakes cannot be entirely avoided.
If you should find a mistake or wish to make a suggestion for improvement, we look forward to hearing
from you.
Send an e-mail to:
[email protected]
or use our contact form:
https://www.wiltec.de/contacts/
The most recent version of this manual in various languages can be found in our online shop via:
https://www.wiltec.de/docsearch
Our postal address is:
WilTec Wildanger Technik GmbH
Königsbenden 12
52249 Eschweiler
Germany
Do you wish to pick goods up? Our pick-up address is:
WilTec Wildanger Technik GmbH
Königsbenden 28
52249 Eschweiler
Germany
To shorten the waiting time and allow for a rapid on-site transaction, we ask you to call us previously or
placing your order via the webshop.
E-mail: [e-mail]
Tel:[phone]
Fax: [phone]
To return orders for exchange, repair or for other purposes, please use the following address. Attention!
To allow for a smooth execution of your complaint or return, it is important to contact our customer
service team before returning the goods.
Returns Department
WilTec Wildanger Technik GmbH
Königsbenden 28
52249 Eschweiler
E-mail: [e-mail]
Tel:[phone]
Fax: [phone]

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Introduction
Thank you for purchasing this quality product. To minimize the risk of injury we urge that our clients
take some basic safety precautions when using this device. Please read the operation instruc-
tions carefully and make sure you have understood its content.
Keep these operation instructions safe.
The submersible pump consists of a motor and a pump. Depending on the water level the float switch
can turn the pump on and off automatically. The thermal protection of the motor can automatically turn
the engine off if it is running too hot or overburdens itself, therefore security measures are kept in force
even in roughest conditions. The pump needs to be submerged entirely.
Operating conditions
1. The maximum depth to submerge the pump is 5 m seen from the middle of the rotor.
2. The temperature of the liquids being pumped through may not be above 40 ℃.
3. The pH level of the liquids being pumped may be between 4 and 10.
4. The kinematic viscosity of the liquids being pumped should be between 7×10-7 and 23×10-6 ㎡⁄s.
5. The maximum density of the liquids being pumped through is 1.2×1000 ㎏⁄㎥.
Safety instructions
CAUTION:
The use of this device is allowed on standing water bodies, garden ponds or swimming ponds and their
surrounding areas only with fault current protection-switch with a triggering nominal current up to 30 mA
(according to VDE 0100 Article 702 and 738).
The device is not suitable for use in swimming pools, paddling pools and other water bodies in which
during operation people or animals linger. The operation of the device during the stay of people and
animals in the danger zone is not allowed. Ask your electrician.
The device is not intended for use by persons (including children) with impaired or limited physical,
sensory and mental abilities or lack of experience and/or real knowledge, unless they are supervised by
a person responsible for their safety or you follow the instructions made by this person how to use the
device correctly. Children should be supervised to make sure that they do not play with the device.
ATTENTION:
•Perform a visual inspection of the device before every use. Do not use the device if the safety
appliances are damaged or worn out. Never override safety regulations.
•Use the device exclusively according to the intended purpose stated in the instructions for use.
•You are responsible for the safety of the working environment.
•If the cable or the plug is damaged because of external influences, the cable must not be re-
paired, but must be replaced with a new one. This work can be carried out only by an electrician.
•The voltage indicated on the type plate of the device of 230 V AC has to correspond to the
existent mains voltage.
•Never lift, carry or fix the device by using the power cable.
•Make sure that the electrical plug connection is placed in a flood-proof area and is protected
from moisture.
•Before working on the garden pump, disconnect the appliance by taking the plug out of the
socket.
•Avoid exposing the pump to a direct water jet.

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•The user is responsible for the compliance with location specific safety and installing regula-
tions. Ask an electrician.
•Consequential damage arising from flooded rooms caused by dysfunctions of the appliance
must be avoided by means of the appropriate measures (e.g., installing an alarm system, a
reserve pump).
•In case of malfunction, the repair work can be carried out only by a qualified electrician or spe-
cialist.
•The pump must not run dry or with the intake port completely closed. The manufacturer’s guar-
antee is no longer valid if the damage is caused by dry running.
•The submersible pump must not be used for swimming pools.
•The pump cannot be employed for potable water circuits.
WARNING:
Read all safety guidelines and instructions carefully. Non-compliance with the safety rules and reg-
ulations can lead to an electric shock, fire and/ or serious injury. Keep the instructions and the safety
guidelines in a safe place in case you need them in the future.
Resistance
•The maximum temperature of the pumped liquids should not exceed +40 ℃ during continuous
operation.
•This pump is not allowed to be used for burnable and explosive liquids, as well as gas.
•The transport of other liquids, especially engine fuels, cleaning detergents and other chemical
products is prohibited!
Installation
Installing the pump can be done the following way: either in a fixed position with fixed piping or in a fixed
position with flexible piping.
ATTENTION:
•Please note that the pump may not be installed hanging of its pressure pipe or of its electricity
cable. The submersible pump engine must be hung up via its handle/ stand on its shaft floor. If
the water level is too low, the mud in the shaft can easily dry up and hinder the water flow.
Therefore, it is required to check the submersible pump engine frequently (by doing a start-up
test).
•The float switch has been adjusted for immediate use.
Maintenance
•Check the supply cable frequently; change them if necessary.
•After 2000 hours of operating time, the pump should be maintained the following way:
◦Demounting the pump
Check the parts easily worn, e.g., bearings, mechanical parts, oil seals, O-rings; exchange
the parts warn.
◦Oil change
Open the oil exchange cap and pour mineral oil up to a height of 80 % of the shaft volume.
◦Leak test
After the maintenance work the leak tightness needs to be checked up on with air pressure:
Fill the pump with 2 bar and watch the pressure gauge. If the air pressure does not drop
within 3 min, the pump is leak proof.

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Technical data
Item №
51552
51553
Intake voltage (V)
220–240
Intake frequency (㎐)
50
Power (W)
550
750
Max. delivery head (m)
10
12
Max. flow rate (ℓ⁄h)
12,000
14,000
Max. sand percentage in water (%)
2
Outlet (㎜)
50
Protection type
IP 54
Troubleshooting
Error
Possible Reason
Error Clearance
Pump does not start.
1. Inefficient voltage supply
2. Impeller blocked
3. Electric winding blown
4. Condenser broken
5. A phase is missing (with 380 V)
6. Too high cable resistance
1. Turn tension to ±10 %.
2. Remove blockage.
3. Exchange.
4. Change condenser.
5. Check switch and cable connection.
6. Use matching cable.
3 and 4 may only be done by a specialist.
Pump does not pump
efficiently.
1. Too high delivery head
2. Entrance filter blocked
3. Impeller worn
4. Not submerged enough
5. Wrong rotary direction (at 380 V)
1. Reduce delivery head height.
2. Clean filter.
3. Exchange impeller.
4. Change diving depth to min. 0.5 m.
5. Change 2 phases.
Pump stops suddenly.
1. Switch released
2. Impeller blocked
3. Electric winding blown
1. Check power supply, exchange fuse.
2. Interrupt power supply, remove block-
age.
3. Repair (specialist only!).

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Disposal regulations
EU guidelines regarding the disposal of scrap electric appliances (WEEE, 2012/19/EU) were imple-
mented in the law related to electrical and electronic equipment and appliances.
All WilTec electric devices that fall under the WEEE regulations are labelled with the crossed-out
wheeled waste bin logo. This logo indicates that this electric equipment must not be disposed with the
domestic waste.
The company WilTec Technik GmbH has been registered in the German registry EAR under the WEEE-
registration number DE45283704.
Disposal of used electrical and electronic appliances
(intended for use in the countries of the European Un-
ion and other European countries with a separate col-
lection system for these appliances).
The logo on the article or on its packaging points out
that this article must not be treated as normal house-
hold waste but must be disposed to a recycling collec-
tion point for electronic and electrical waste equipment.
By contributing to the correct disposal of this article you
protect the environment and the health of your fellow
men. Environment and health are threatened by inap-
propriate disposal.
Material recycling helps reduce the consumption of raw materials.
Additional information on recycling this article can be provided by your local community, municipal waste
disposal facilities or the store where you purchased the article.
Address:
WilTec Wildanger Technik GmbH
Königsbenden 12 / 28
D-52249 Eschweiler
Important notice:
The reprint or reproduction, even of excerpts, and any commercial use, even in part, of this instruction
manual require the written permission of WilTec Wildanger Technik GmbH.