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Homa AK Series, Installation, Operation And Maintenance Manual

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Homa AK Series Installation, Operation And Maintenance Manual Download Page 23

ENGLISH | 23

11.1. Connection of pumps and mixers

Risk of electrocution!
Improper use of electricity can be fatal! All pumps with exposed cable ends must be connected by a qualified electrician. 

Risque d‘électrocution !
Une mauvaise utilisation de l‘électricité peut être fatale ! Toutes les pompes dont les extrémités de câble sont exposées 
doivent être raccordées par un électricien qualifié.

11.1.1 Power cables

Pumps in Star 3-phase version

Cable identification Motor

Terminal in control cabinet

U1

U1

V1

V1

W1

W1

U2

U2

V2

V2

W2

W2

Pumps in Direct start version

Cable identification Motor

Terminal in control cabinet

U

U1

V

V1

W

W1

11.1.2 Control cables

Depending on the design of the pump/agitator, it may be that no separate control cable is used. In this case monitoring 

devices are run from the power cable.

Cable identification Motor

Monitoring system

Monitoring in winding

T1 / T2

Temperature limiter (2 switches in series)

T1 / T4

Temperature controller (2 switches in series)

T1 / T2 / T3

Temperature limiter and controller

K1 / K2

PTC – Thermistor (3 thermistors in series)

PT1 / PT2

3 x PT100 individually installed

PT3 / PT4
PT6 / PT6

Bearings monitoring

P1 / P2

PT100 upper bearing

P3 / P4

PT100 lower bearing

Seal monitoring

S1 / S2

Seal monitoring in oil chamber

S3 / S4

Seal monitoring in connection compartment

S5 / S6

Seal monitoring in Motor compartment with 2 Electrodes

S7 / S8

Seal monitoring in Motor compartment with float switch

S9 / S10

Seal monitoring in Gearbox (Agitator)

S11 / S12

Seal monitoring in Leakage compartment (internal cooling)

Heating

H1 / H2

Heating system

Summary of Contents for AK Series

Page 1: ...Installation Operation and Maintenance Manual AMS AM X AV X AK X 60 Hz Version 11 2021 No 00507610 01 ...

Page 2: ... 4 1 Delivery 09 4 2 Transport 09 4 3 Storage 09 5 Installation and initial commissioning 10 5 1 General 10 4 4 Returning to the supplier 10 5 2 Installation 11 5 3 Use of chains 13 5 4 Initial operation 14 5 5 Preparatory work 14 5 7 Direction of rotation 16 5 8 Motor protection 16 5 9 Variable Frequency Drives 16 5 10 Types of startups 16 6 Maintenance 17 6 1 General 17 6 2 Maintenance intervals...

Page 3: ...he pumped fluid Please observe the values for the maximum submersion depth and the minimum water coverage dry installation type In this installation type the product is installed dry i e the pumped fluid is delivered to and discharged via a pipeline system The product is not immersed in the pumped fluid Please note that the surfaces of the product become very hot transportable installation type Wi...

Page 4: ... must be interrupted immediately if weather conditions worsen These instructions must be strictly observed Non observance can result in injury or serious damage to property This product may contain chem icals known to the State of California to cause cancer and birth defects or other reproductive harm www p65warnings ca gov Ces instructions doivent être strictement respectées Le non respect de cet...

Page 5: ... d entretien ou de réparation éteignez la machine et laissez les pièces mobiles s arrêter 2 6 Safety and control devices Our products are equipped with various safety and con trol devices These include for example moisture sensors and temperature sensors These devices must never be dismantled or disabled Equipment such as thermo sen sors float switches etc must be checked by an elec trician for pr...

Page 6: ...e in an expected case of mal function in which the enclosure fails as the pump cannot suck up pumping medium nor its containing solids In the ventilated shaft the explosion protected submersible mo tor pumps are drained via a drain system with two guide tubes of galvanized steel between their guide claws of grey cast iron that guide into the automatic coupling ar rangement The guide velocity with ...

Page 7: ...l Silicon carbide Silicon carbide Mechanical shaft seal Silicon carbide Silicon carbide Bearing One grooved ball bearing above double row type angular ball bearing below 3 3 3 Monitoring Equipment The unit is equipped with various types of monitoring safe ty equipment The following table shows an overview of the options available The options may vary depending on the size of the pressure outlet Mo...

Page 8: ...ump Optional leak detectors can be installed as follows Stator Chamber installation Probe placed in bottom of stator housing to detect presence of water in the chamber Stator or Motor cap installation Probe used to detect the presence of water only into the stator housing or motor cap terminal board Closed loop cooling Installation Probe placed in sta tor housing to detect the presence of liquid i...

Page 9: ...aining a high level of impurities or fibrous matter and containing gas 4 Package Transport Storage 4 1 Delivery On arrival the delivered items must be inspected for dam age and a check made that all parts are present If any parts are damaged or missing the transport company or the manufacturer must be informed on the day of delivery Any claim made at a later date will be deemed invalid Damage to p...

Page 10: ...efore start up the filling levels oil cooling fluid etc of the individual products should be checked and topped up if required Please refer to the machine data sheet for specifications on filling Damaged coatings should be repaired immediately Only a coating that is completely intact fulfils the criteria for intended usage If these rules are observed your product can be stored for a longer period ...

Page 11: ...robe cable to pump body and power ca ble with tyraps before installing pump 5 2 Installation Risk of falling When installing the pump and accessories work is carried out next to wet well Carelessness or wear ing the wrong shoes can lead to falling This is life threatening Take all safety precautions to prevent this Risque de chute Lors de l installation de la pompe et des acces soires les travaux ...

Page 12: ...he guide rails bracket insert them into the guide rails and fasten the bracket The guide rails must be positioned with no play at all otherwise vibration will occur during op eration of the pump Clean the wet well of any solid material debris stones etc before commissioning Mount the guide claw on the pump dis charge thread or flange connection Ensure that the rubber profile seal is correctly seat...

Page 13: ...e and fitting hardware It is also recommended that a length of hose be attached to the valve and routed back to the sump Pumps with cooling jackets must be vented The screw plug 903 02 must be removed and replaced with the supplied vent valve Les pompes avec chemise de refroidissement doivent être ventilées Le bouchon à vis 903 02 doit être retiré et remplacé par la valve de ventilation fournie No...

Page 14: ...achine data sheet If a hose is used on the discharge side it should be flushed before use with fresh water so that no depos its cause blockages For wet installation the wet well must be cleaned The pressure and suction side pipe systems are to be clean and all valves are to be opened If the pump is jacketed with media cooling the jacket must be completely bled of air i e it must be com pletely fil...

Page 15: ...onductors for each leg of the circuit With either system the seal probe leads must be wired into a control circuit provided in the control panel This control circuit must energize the probe with a regulated power source and sense the closed cir cuit in event of water intrusion Indication and alarm func tions must also be provided in the control circuit Please see control panel wiring diagram for s...

Page 16: ...0 or similar national regulations If the equip ment is connected to power grids where problems often occur we recommend the additional use of protective devices e g overvoltage protection or under voltage pro tection or phase failure relays lightning protection etc When connecting the machine the local and legal require ments must be adhered to 5 9 Variable Frequency Drives Special considerations ...

Page 17: ... machine After work ing on the machine all cleaning materials and tools should be removed from it All materials and tools should be stored in an appropriate place Operating supplies such as oil and lubricants must be collected in appropriate vessels and proper ly disposed Appropriate protective clothing is to be worn for cleaning and maintenance jobs Only lubricants expressly recommended by the ma...

Page 18: ...This may be the result of defective shaft seals In this case the condition of the shaft seals should be checked by a HOMA Service shop Oil type Mineral Oil Used oil has to be disposed according to the existing envi ronmental rules and regulations Functional inspection of safety and control devices Monitoring devices are temperature sensors in the motor oil chamber monitors motor protection relays ...

Page 19: ...s M20 201 5 ft lbs 364 5 ft lbs 7 2 Changing the impeller and volute Changing the impeller and the volute Loosen and remove the screws holding the volute to the oil chamber Secure and remove the volute from the oil chamber with suitable equipment e g hoisting gear Place on a secure base Fasten the impeller with suitable equipment loosen and remove the impeller fastening cylindrical screw with sock...

Page 20: ...gainst frost Place it down vertically onto a firm foundation and se cure it against falling Support the cable at the cable entry assembly to help avoid a permanent deformation Protect the ends of the electric power cable from moisture Protect the machine from direct sunshine as a pre ventive measure against brittleness in elastomer parts and the impeller and casing coating When storing the machine...

Page 21: ... of the trigger with the technical speci fications and adjust it if necessary Increased power consumption due to major voltage drop Have an electrician check the voltage on each phase and rewire if necessary Excessive voltage differences on the three phases Have a specialist inspect the connection and the switching system and correct it as necessary Incorrect direction of rotation Swap the 2 phase...

Page 22: ...parts Defective motor bearing Contact the factory The machine is installed with mechanical strain Check the installation use rubber spacers if necessary Mechanical shaft seal leaks sealing chamber monitor reports fault and switches the machine off Cause Solution Increased leakage when running in new mechanical shaft seals Change the oil Defective sealing chamber cables Replace the moisture sensors...

Page 23: ... of the pump agitator it may be that no separate control cable is used In this case monitoring devices are run from the power cable Cable identification Motor Monitoring system Monitoring in winding T1 T2 Temperature limiter 2 switches in series T1 T4 Temperature controller 2 switches in series T1 T2 T3 Temperature limiter and controller K1 K2 PTC Thermistor 3 thermistors in series PT1 PT2 3 x PT1...

Page 24: ...HOMA Pump Technology 390 Birmingham Blvd Ansonia CT 06401 Phone 203 736 8890 Fax 203 736 8899 e Mail info homapump com Internet www homapump com Version 11 2021 ...

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