S.C. M.
Contents
1. 2 9 Electric motor temperature excessive 15 1 1 Turn to the ON position 1 2 Check that the electrical equipment is in a good condition Check whether the equipment is receiving power 1 3 Wait until the correct operative conditions have been restored or check the efficiency of the automatic devices 2 1 Check that the electrical equipment is in a good condition Check the power supply voltage rating 2 2 Check the unbalance as described in the Electrical connections and information chapter If necessary send the aerator to an authorized after sales service centre 2 3 Invert two of the three phases 2 4 Compare the setting amperage value with the one on the aerator data plate 2 5 Change the aerator or change the power supply 2 6 Check the hydraulics according to the procedure described in the Maintenance paragraph If necessary send the aerator to an authorized after sales service centre 2 7 Check whether the right aerator has been chosen 2 8 Check that the relay is the compensated ambient temperature type Protect the electric control panel from the sun and heat 2 9 Remove the incrustations from the cooling surfaces of the motor Check whether the right aerator has been chosen since The temperature of the fluid may be excessive The liquid may be at a persistently low level and fail to cover the motor 2 The overload relay or internal thermal amperometric pro2. Electrical connections diagrams for motor type SICXXX Kw 4 0 Kw 11 0 VEN HEES REEEEERDES ojn 6 e Thermal switch Oil sensor device L1 L2 L3 L1 L2 L3 Thermal switch Oil sensor device lt DELTA CONNECTION START CONNECTION 21 Electrical connections diagrams for motor type SICXXX Kw 15 0 Ke 55 0 EP PREP L1 L2 L3 L1 L2 L3 DELTA CONNECTION START CONNECTION Y 22 Installation scheme Picture 1 Ge S S S S S N S S N S A N N S N A Eyebolt of mount of the lifting chain to be fixed to the edges of the basin to make easy the following extraction Hook the electric cable without stretching it too much to the suction pipe Simply lay the aerator on the bottom of the basin Installation basin Air inspiration pipe P E 23 Handling Picture 2 To lift and handle the machine use the suitable eyebolts and hook it with suitable ropes or chains according to the weigh of the machine Consult the weights and dimension table on page 25 26 make sure not to lay the machine on the suction chamber To handle the machine with lift trucks causing the damage of the same Always lay the aerator on a firm floor consult the weights and dimensions table page 25 26 24 Overall Dimensions SC Type
3. A B C D E F G H DN g Weight mm mm mm mm mm mm mm mm Kg SC 10 630 140 430 235 390 230 35 50 60 3 53 SC30 800 200 725 336 460 795 398 94 80 88 9 140 SC55 890 200 725 336 460 795 398 94 80 88 9 155 SC75 890 250 802 330 645 965 402 100 80 88 9 190 SC 100 985 250 802 330 645 965 402 100 100 114 3 220 SC 1201 985 250 1050 330 850 1205 525 79 100 114 3 240 SC 180 1060 250 1050 330 850 1205 525 79 100 114 3 310 SC 220 1075 264 1171 355 960 1331 590 86 125 139 7 380 SC 300 1075 264 1171 355 960 1331 590 86 125 139 7 420 SC 400 1290 264 1192 355 960 1331 595 80 150 168 3 618 730 SC 500 1300 264 1222 355 990 1331 625 80 150 168 3 730 780 SC 800 1300 264 1222 355 990 11331 625 80 200 219 1 190 25 Overall Dimensions SC L Extended channels of different dimensions are available upon request SC L Type A B C D DN 2 Weight mm mm mm mm Kg SC 10 L 750 290 195 630 50 60 3 60 SC 30 L 1460 480 336 800 80 88 9 144 SC 55 L 1460 480 336 890 80 88 9 176 SC 75 2245 480 330 890 80 88 9 208 SC 100 L 2245 480 330 985 100 114 3 243 SC 120 L 2450 625 330 985 100 114 3 258 SC 180 L 2450 625 330 1060 100 114 3 335 SC 220 L 2860 691 355 1075 125 139 7 398 SC 300 L 2860 691 355 1075 125 139 7 458
4. Another fundamental condition to ensure regular operation of the aerator is that you must have the best hydraulic and electrotechnical provisions Malfunction caused by wear and tear and or corrosion is not covered by the warranty To prevent the warranty from becoming void the product must first be examined by our technicians or by technicians from our Authorized After sales Centres Failure to strictly follow the instructions in the documentation supplied with the aerator shall void shall relieve the manufacturer from all responsibilities in merit 14 9 CAUSES OF IRREGULAR FUNCTION TROUBLESHOOTERS 1 The submersible aerator fails to start 2 The overload relay or internal thermal amperometric protection single phase version only has activated during operation 1 1 The selector switch is set to the OFF position 1 2 The motor is not powered 1 3 The automatic monitoring devices level switch internal thermal amperometric protection etc are not enabling operation 2 1 All motor phases are not being fully powered 2 2 Power draw is unbalanced amongst the phases 2 3 The motor turns in the wrong direction 2 4 Wrong overload relay setting 2 5 The power supply voltage rating fails to correspond with that of the aerator 2 6 The electric aerator fails to turn freely since there are points that rub 2 7 Aeratored fluid excessively viscious and or dense 2 8 High temperature in the electric panel
5. SC 400 L 2860 710 355 1290 150 168 3 678 SC 500 L 2950 770 355 1300 150 168 3 790 SC 800 L 2950 770 355 1300 200 219 1 887 26 Handling Picture 4 Rotation direction of the impeller seen from the top Type With oil Dry N m Ib ft N m Ib ft M6 13 9 5 17 12 M8 32 24 40 30 M10 63 47 80 60 M12 110 80 140 105 M14 175 130 225 165 M16 275 200 350 225 M18 375 275 475 350 M20 530 400 675 500 M22 125 540 825 675 27 Main components Picture 5 Silencer optional Radial submerged aerator Intake pipe optional 28 TEST CERTIFICATE The firm S C M TECNOLOGIE sas attests that the radial submerged aerator type SC sabes of Kw n has been carried out in conformity with its Patent n 01246905 and that the employed materials are Fusion housing Cast iron Shaft Inox ISI 420 Upper seal Double external side carbide Motor side aluminium graphite Impeller Stainless steel AISI 316 Diffuser Stainless steel AISI 304 Channels Stainless steel AISI 304 Suction chamber Stainless steel AISI 304 Axle box Teflon Bronze Bolts Stainless steel AISI 304 Moreover the firm S C M TECNOLOGIE sas attests that the submerged aerator type of Kw n has been electrically and hydraulically tested and it does not present any defects In faith SCAM TECNOLOGIE 29 MAINTENANCE RECORD Work performed Remarks 30 MAINTENANC
6. basins After a period of inactivity check that the aerator contains the right quantity of oil When it is not the first installation also check that there are no impurities and or water consult the Maintenance chapter Before connecting the aerator to the electrical power verify by hand that the impeller has free rotation ATTENTION Do never ever carry out this operation when the aerator is electrically connected and before having checked the free rotation of the impeller N when the motor is put on a suitable floor SEE TABLE WITH WEIGHTS TABLE ON PAGE 25 26 Specialised and authorised staff will carry out the electrical connections of the power cable to the control panels which is equipped with all the suitable thermal and electrical protections The very same spacialised staff will verify that the rotation sense is clockwise 9 ATTENTION The rotation sense can be checked visually You must keep 1 metre distance from the aerator wear suitable clothes and never touch the machine picture 4 e N 5 2 ELECTRICAL CONNECTIONS SEE PICTURE ON PAGES 17 18 19 20 Do not never ever open the motor of the aerator Call qualified staff if necessary The whole electric installation must be carried out by qualified personnel who strictly comply with all the current accident prevention provisions in force The aerators must be equipped with motors with a voltage rating of 220 380 415 500 or 550V Always indicate
7. for what voltage for the motor is prepared and if the starting must be direct or star delta Always verify that the supply voltage agrees with the specifications indicated on the rating plate of the aerator As the motor of aerator is submerged it must necessarily be connected to the grounding circuit The grounding conductors are yellow green All yellow green conductors must be connected to the grounding circuit of the system before the other conductors are connected The grounding conductors must be the last to be removed if the motor is disconnected The extreme ends of the cables must not ever in any situation be immersed or be in contact with water Remember that the current intensity needed for the direct starting is 6 times the nominal one while in case of star delta starting it is twice make sure that the fuses are able to tolerate this starting intensity Control panel The control panel can be made up by anormal motor protector in case of direct starting or by a star delta aviator supplied with a motor protector relay Direct start the motor protector must be adjusted at a current carrying capacity equivalent to the one on the rating plate 10 Star delta start adjust the thermal relay to a current carrying capacity equivalent at the latest to 0 58 times the nominal absorption indicated on the rating plate If the motor protector goes off while the aerator is working check the fuses before trying to start it again Do
8. the treatment of wastewater and whenever mixing with air is required Elevated oxygen transfer values low noise levels high reliability low costs and ease of installation are just some of the advantages that our SC submerged aerators offer Moreover they can be powered by atmospheric air pure oxygen enriched air or by pure oxygen alone without having to install complicated and expensive air diffusion systems The submersed aerator consists of a submerged motor which activates an impeller The rotation of the impeller creates a void in the compartment of the same thus allowing aspiration of air from a special aspiration chamber The air and liquid are mixed with a great strength in the expulsion channels from where the expelled jet causes a remarkable mixing of the liquid 6 The SC submerged aerator evidently provides an elevated performance in the transfer of oxygen and increased mixing ability In addition working as it does on the bottom of the tank it permits a total airing of the waste water avoiding dead zones which are characteristic of other systems The asynchronous electric motor with squirrel cage rotor is submersible featuring protection degree IP68 All versions have nuts and bolts and drive shaft in stainless steel which guarantee a reliable operation even when moderately aggressive fluids are aerated For the installation of the SC submerged aerator it is sufficient to put the aerator on the bottom of the tank s
9. 30 8 3 0 5 MX ii 40 50 8 5 0 5 MX ii 60 50 12 5 1 5 MX ii 60 75 12 7 5 1 5 MX ii 60 100 12 1 1 5 Oil DIELECTRIC AGIP ITE 360 OR EQUIVALENT 13 Checking the impeller and the suction plug If the air volume decreases a Check that the impeller or the suction plug are not clogged and remove possible clogging materials b Replace the impeller and or the suction plug and or the bushing seal of the impeller In case they would be damaged consult S C M Tecnologie Check the air input Check the air input pipe is not clogged or damaged which both can cause a motor overload Check that the throttle valve when installed is in good conditions Check that the silencer when installed is dust free if not clean it from dust All the described checks must be periodically carried out to extend the useful life of the aerator 6 4 INACTIVITY Consult the Storage and handling chapter 7 TO TAKE OUT OF USE AND DISMOUNT relative phases in strictly following the local rules and regulations governing such activity When dismantling aerator the technician must proceed with El FX 8 WARRANTY The general conditions for sale of all products manufactured by S C M Tecnologie are also valid for the submerged aerator in question In particular remember that one of the essential conditions for recognition of the warranty is that you strictly follow all the individual instructions given in the enclosed documentation
10. E RECORD Work performed Remarks 31 CW S C M TECNOLOGIE 46100 Mantova Via Accademia 15 Tel 39 0376 321936 Fax 39 0376 364472 www scmtec com e mail info scmtec com
11. aff possessing appropriate qualifications and equipped with adequate tools The handling installation and management of the product may also be carried out by non specialized staff on the conditions that they have become fully familiar with the contents of this manual and any other documentation supplied with the product Always comply with all safety accident prevention and anti pollution instructions in the manual during each individual operation together with all the more restrictive local provisions in merit Since the nature of the aerated liquids varies it may be necessary to wear appropriate clothing to protect your skin from contact with the same For safety reasons and to ensure compliance with the warranty conditions the purchaser is forbidden to use the aerator should this become faulty or in the event of a sudden variation in the performances of the aerator itself Installation must be such as to prevent accidental contacts which could represent a hazard for persons animals and property Inspections and servicing procedures must be carried out to prevent all forms of risk following malfunction of the aerator unit Consult the Handling and storage chapter for safe handling and storage 3 DESCRIPTION OF THE PRODUCT AND USE 3 TECHNICAL CHARACTERISTICS CHARACTERISTICS FUNCTION AND USE SEE PICTURE AND TABLE ON PAGES 25 26 The SC submerged aerators are an extremely flexible and versatile airing system for
12. d lubricate the spherical bearings Replace the inferior seal bearing if the water or the mixture water oil has penetrated into the stator These operation must be carried out by specialized staff by an authorized workshop or at S C M Tecnologie Check the electric motor insulation During the general revision you are advised to check the insulation of the motor with a megohmmeter at 500V The insulation has to result superior to 1 megohm whether in the different phases or between each phase and the aerator Lubrication The bearings installed on the aerators are RS or 2Z self lubricating for life therefore they do not need to be periodically lubricated It is advisable to check their state of wear and tear en A These operation must be carried out by specialized staff by an authorized workshop or at S C M Tecnologie Unscrew the oil plug put the oil in a clean container and check it Fill in the oil tank with AGIP ITE 360 or equivalent Quantity of oil contained into the motors of the SC SC L aerators and submersible mixers Aerator model Kw Q Litres SC 10 SC 10 L G408T 1 5 0 33 SC 10 SC 10 L G409T 3 0 33 SC 30 SC 30 L G410T 4 1 2 SC 55 75 SC 55 L 75 L G411T 5 5 9 1 7 SC 100 120 SC 100 L 120 L G413T 11 15 1 5 SC 10 SC 10 L G418T 18 30 2 85 SC 10 SC 10 L G420T 37 55 1 5 SC 10 SC 10 L G425T 80 1 5 MX gb 19 24 4 2 4 0 45 MX gb 19 32 4 3 2 0 45 MX gi 30 15 6 1 5 0 33 MX gi 30 22 6 2 2 0 33 MX ii 40 25 8 2 5 0 5 MX ii 40
13. d risk of explosion 4 STORAGE AND HANDLING AN AN Store the product in dry and dust free place Avoid instability which could be caused by improper positioning of the product Turn the rotating parts at regular intervals to prevent them from possible jamming consult the Preliminary inspections chapter for relative procedure WARNING BEWARE OF NOT CAUSING ANY DAMAGE TO THE ELECTRIC CABLE WHEN HANDLING THE AERATOR SEE PICTURE 1 PAGE 23 ATTENTION For a safe storage after previous installation the product must be thoroughly cleaned do not ever use hydrocarbon based products for this purpose The submerged aerator must be handled with care Use suitable lifting means in compliance with the safety provisions in merit gripping the product by the relative lifting points handles eyebolts SEE PICTURE 2 PAGE 24 Do not ever use the powering and grounding cables for handling purposes Do not bend the cables sharply the minimum radius of the bend must be more than 5 times the diameter of the cable itself The extreme ends of the cables must never be immersed or wetted in any way 5 INSTALLATION FIG 1 PAGE 23 FIG 5 PAGE 28 5 1 PRELIMINARY INSPECTIONS Check that the machine did not suffer damages during transport nstall the aerators in a position as vertical as possible The use of the aerator in a non vertical position causes a more serious wear and tear of the rotating parts Do not s
14. e J Tecnologie d OT UB J D BK SUuBMERSIBLE AERAroRs en ej gt lt FEN gt s 2 Dn 5 INDEX 1 General information Page 03 1 1 Use of symbols 03 1 2 General conditions 03 1 3 Example of data plate 04 1 4 Operating instructions 05 2 Safety 05 3 Description of the product and use 06 3 1 Technical characteristics function and use 06 3 2 Marginal notes to take into consideration 07 4 Handling and storage 08 5 Installation 08 5 1 Preliminary inspections 08 52 Electrical connections 10 6 Directions of use and maintenance 11 6 1 Start 11 6 2 Running and inspections 11 6 3 Maintenance 12 6 4 Out of use lnactivity 14 T To take out of use and dismount 14 8 Warranty 14 9 Causes of irregular function troubleshooters 15 16 Nomenclature Typical sections 17 28 SUBMERGED RADIAL AERATOR TYPES SC and SC L The picture is illustrative and not binding for S C M Tecnologie User s manual I GENERAL INFORMATION 1 1 USE OF SYMBOLS The instructions in this manual concerning safety are marked by this symbol Your disrespect and failure to follow these instructions might expose staff to health risks Furthermore the instructions in this manual concerning electrical hazards are marked by this symbol Your disrespect and failure to follow these instructions might expose staff to
15. ee picture 1 page 23 without the help of any anchorage and support structures The weight of the machine itself and its low centre of gravity ensure a high stability A chain see picture 2 page 24 locked to the machine and fixed to the intake pipe allows an easy handling of the SC submerged aerator and avoids using any expensive gangways or emptying of the tank see picture 5 page 28 When the product is installed according to the instructions given in this manual and in compliance with the diagrams the acoustic pressure level caused by the machine within the given field of operation will never exceed 70 dB A Noise measurement was conducted in compliance with ISO 3746 and according to 89 392 EU Regulations The gauging points were 1 meter from the reference surface of the machine and 1 6 metres from ground or access platform level The maximum value is evenly distributed around the unit N 3 2 MARGINAL NOTES TO TAKE INTO CONSIDERATION ATTENTION The SC submerged aerators are not suitable for Dry operation Aeration or mixing of liquids at a temperature exceeding 40 104 F An immersion depth inferior or superior to the minimum or maximum values indicated in the graphs attached to this manual Aeration or mixing of liquids with a pH value of other than 6 5 8 5 in case of different pH values special versions are produced on request Aeration or mixing of inflammable liquids N Operation in places with a classifie
16. ing The electrical insulation of the motor power cable complex consult the Electrical connections paragraph The condition of the oil consult the Maintenance paragraph The condition of the hydraulic components consult the Maintenance paragraph You are also advised to check the efficiency of the electric panel when 2 installed every 6 12 months If operative faults are detected identify their causes and proceed with repairs as indicated in this manual 11 0 3 MAINTENANCE Routine maintenance and repairs must be carried out by specialized technicians in possession of adequate qualifications and equipped with the right tools These technicians must have become fully familiar with the contents of this manual and with any other documentation supplied with the product After having dismantled the aerator for the repair please apply to the fastening moments of the bolts on page 27 for a correct assembling Va Extraordinary maintenance must only be carried out by authorized workshops Check of the mechanical seal During the check of the mechanical seal you must make sure that no abnormal infiltrations occurred in both the seals You must also check that no other liquids have entered the stator and the oil tank If the aerator or the seal is new you are advised to have everything overhauled after a week of work In case of normal functioning examine the aerator at least once a year If the aerator operates in inten
17. ithout previous notice 1 4 OPERATING INSTRUCTIONS Become thoroughly familiar with the instructions in the documents consigned with the aerator This will enable you to work in complete safety and to obtain the best performance the aerator is capable to offer The following instructions apply to the standard version of the aerator in normal conditions Special versions shown by the product code may not fully comply with the indications herein when necessary the manual will be supplied with additional information In correspondence with our policy of constant development and improvement of our products the data in the documentation and the product itself may be subjects to modification without further notice from the manufacturer The disrespect of all the instructions in this manual or an inappropriate use or unauthorized modifications to the aerator unit will void all forms of guarantee while the manufacturer shall not be held responsible for any damages of any kind to persons animals or property 2 SAFETY AN Before proceeding with any form of operation on the product always make sure that the electrical parts of the system that you work on are not connected to electrical power The submerged radial aerator described in this manual is for industrial use for building sites or permanent use at home As such the maintenance of the product in form of service reparation or dismountation must be carried out by specialized st
18. not ever force the aerator to work without having solved the problems If necessary consult a technician of S C M Tecnologie AN Direction of rotation After every new connection and lack of voltage check the rotation direction of the motor SEE PICTURE 4 ON PAGE 27 The rotation direction of the impeller must be clockwise when watching the aerator from the top in case connect the machine and check its rotation direction before submerging it If the rotation direction is wrong the motor does not aspirate air correctly causing an overcharge with current absorption If this rotation direction is wrong you need to invert the two ends of the cable on the control panel CONSULT THE PARAGRAPH 5 1 PAG 8 USE AND MAINTENANCE 6 1 START If the starting unit is unable to start do not insist repetedly as this could only damage the component Identify the malfunction and repair the damage If an indirect starting system is used the starting transaction must be brief never more than a few seconds 6 2 RUNNING AND INSPECTIONS ATTENTION installed the SC aerator will not require particular maintenance However to ensure a continuous regular operation check periodically that the aerator hydraulics are not clogged by solids and or thready substances in the pump liquid Also conduct regular preventive maintenance inspections at least once every 5 000 10 000 hours service depending on whether duty is more or less heavy Check the follow
19. o the coil of the standard testing meter S Humidity electrode 17 380 660V star delta connection for motor type FXXX c belleg 10 LEAD ELECTRIC AERATOR CABLE X Y Z 400V mains to be connected with star delta starter U V W 400V mains to be connected with star delta starter TT Thermal probes to be connected in series to the coil of the standard testing meter S Humidity electrode 18 Electrical connection diagram Direct connection for motor type FXXX To be connected to the water probe only if the aerator is equipped with Specific control panel 7 LEAD ELECTRIC AERATOR CABLE U V W mains T T 2 Thermal probe S Optional humidity probe 19 Electrical connections diagram for motor type FXXX CABLES IDENTIFICATION CABLE 1 CABLE 2 CABLE N 3 464 464 462 5 BLACK U BLACK Z BLACK T BLUE V BLUE X BLACK T BROWN W BROWN Y BLACK S BLACK L BLACK N YELLOW GREEN B i YELLOW GREEN d YELLOW GREEN d where available DIRECT CONNECTION U X MAINS 400V V Y MAINS 400V W Z MAINS 400V T T Stator thermal protections to be connected in series to the contactor coil S Water probe into oil chamber to be connected to the probe terminal only if the pump is equipped with a specific control panel L N Circular 230V single phase feeding to be connected only if the pump is equipped with a cooling jacket Ground 20
20. risks of electrical nature ATTENTION The instructions preceded by this word concern the main recommendations for correct installation operation preservation and dismountation of the electric aerator itself To ensure safe and reliable management of the electric aerator throughout its useful life you must follow all indications in this manual Read the use and maintenance manual IN 1 2 GENERAL CONDITIONS Check that the items indicated on the consignment note correspond to those you actually received and that these have not been damaged Before you proceed working on the aerator please become fully familiar with all the instructions given in the supplied documentation The manual and all the supplied documents including a copy of the data plates form an integral part of the aerator in use For example the additional data plates can be attached to the user s manual No part of these documents may be duplicated in any form unless prior authorization has been obtained from the manufacturer 1 3 EXEMPLIFICATION OF DATA PLATE ITALY Phone 34 0370 LET Fux amp MNT 364472 WS Type of equipment and serial number Date Type of equipment Nominal mains voltage Maximum absorbed current Type of connection Maximum power absorption Frequency Rotation speed Pm D og PB UA Class of motor protection The manufacturer reserves his right to modify the technical characteristics w
21. sive conditions make sure it is overhauled more frequently Oil inspection Put the aerator on its supports and remove the fill drain screw with a suitable key putting the oil in a container If only oil comes out this means that the seal is intact Make also sure that the oil quantity has not considerably decreased then pour the oil into the tank again If the oil appears lightly grey yellowish and viscous or there is a water presence it means that the seal bearing or the seal are damaged and they have to be replaced In this case the aerator must be taken to a workshop for a general revision Fill in the tank with AGIP ITE 360 oil from 0 61 to 4lt according to type Tighten the blowdown and the filling screws Replace the grommets under the screws These operations must be carried out by authorized workshops or at S C M Tecnologie General revision Considering the presence of spherical bearings the aerator needs a general revision every three years Take voltage from the aerator and disconnect the electric cable from the closest cutout box or the control panel 12 Take the aerator out of the basin using the suitable chain it is not necessary to unscrew any bolts or screws Clean the aerator with a jet of water Now the aerator is ready to be taken to the workshop for the revision Disassemble the aerator in all its parts clean all the seal surfaces and check their integrity Replace the damaged parts clean an
22. tection single phase version only has activated during operation The aerator fails to stop automatically The aerator delivers a very poor flow rate The aerator is noisy and vibrates 2 10 Damaged motor windings owing to the presence of liquid 3 1 The automatic monitoring devices level switch etc fail to enable the aerator to stop 4 1 The motor turns in the wrong direction 4 2 Worn aerator 4 3 Delivery duct or valve partially clogged 5 1 Plant installed incorrectly 5 2 Hydraulics excessively worn 5 3 Liquid contains an excessive amount of solids 16 CAUSES OF IRREGULAR FUNCTION TROUBLESHOOTERS 2 10 Check according to the procedure described in the Maintenance chapter If necessary send the aerator to an authorized after sales service centre 3 1 See 1 3 4 Invert two of the three phases 4 2 Inspect the aerator according to the procedure described in the Maintenance paragraph 4 3 Aerator clear water through the duct to flush or demount it if necessary 5 1 See 4 1 5 2 See 42 5 3 Check whether the right aerator has been chosen Electrical connection diagram Direct connection 380V for motor type FXXX To be connected to the water probe only if the aerator is equipped with specific control panel 10 LEAD ELECTRIC AERATOR CABLE X U 400V MAINS Y V 400V MAINS Z W 400V MAINS Thermal probes to be connected in series t
23. ubmerge the extreme ends of the cable and do not use the cable to lift or lower the aerator use the special chain instead The disrespect of these rules may lead to water in the cable or broken wires on the internal causing a motor out of order 8 If the cable must be extended do as follows handle the joint carefully and avoid submerging it do not extend the cable more than the necessary length choosing a suitable dimension of the cable A voltage drop may occur if the cable is too long or if the dimension is too small so as to give you problems to start the motor The installation depth has a great importance for the conditions of the motor The more the quantity of water increases the more the motor has to work For safety reasons do not exceed the following depths 3 5 m c a SC 10 6 5 m c a SC 180 5 0 m c a SC 30 7 m c a SC 220 255 m c a i SC 55 7 m c a SC 300 2 9 m c a SC 75 10 m c a SC 400 6 5 m c a SC 100 10 m c a i SC 500 6 5 m c a SC 120 10 m c a SC 800 Verify that the aerator is not in use until the motor is completely submerged by the liquid to be aerated otherwise a superheating of the motor will occur You are advised to install the aerator in square or round tanks if they are rectangular it will be better to use lower power aerators Alternatively we suggest using SC aerators together with SC mixers in order to avoid the stagnation of the liquid to be aerated into the
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