Eisele GTWS 740 Manual

Operating and Maintenance Instructions
Submersible Mixer GTWS/B/I 740/1040/1540/204/254/304
MTe12318a1p.
FRANZ EISELE u.SÖHNE GmbH u.Co.KG
Pumpen- und Maschinenfabrik
D-72488 Sigmaringen
EISELEproductsarerenownedfortheirgoodqualityandsoundmoderntechnology.
Itisessential,however,thatthecustomershouldpaycloseattentiontothe operating and
maintenanceinstructions,asanydamagecausedtothedeviceduetoincorrecthandling
ornon-compliancewiththeinstructionscannotberemediedbyEISELE.
Casesofindirectconsequentialdamageand natural wear and tear are generally excluded from
liabilityandguarantee claims. If mixers aretobe used in chemically corrosivemedia,please
consultthe factory priortostart-up.
Contents
1. Description and applications
2.Transportationandstorageregulations
3.Electricalconnection
4.Start-up
5.Maintenanceandinspection
6. Repairs
7.Troubleshooting
8.Safety information
1. Description and applications
Max.submersiondepth:40m
Medium:chemicallyneutral
Max.temperature: 65°C
Ensuresufficientlyfree-flowing
consistency- dilute if necessary.
EISELEmixers have anextremely
strongstirringaction which may cause
thewall of the tank to vibrate.
Forthis reason, they may only be installed
intanks which arein good condition!
2. Transportation and storage regulations
Thesubmersibleagitatorshouldbefixedsecurelyinahorizontalpositionfortransportationand
storagepurposes.Itmayonlylifted by the screw provided. Make sure thepropellerisnotexposed
toany unilateral forces. Never lift themixerbythecable.
1/8
Suspension
screw
Submersible
motor
Oil
chamber

Operating and Maintenance Instructions
Submersible Mixer GTWS/B/I 740/1040/1540/204/254/304
MTe12318a1p.
FRANZ EISELE u.SÖHNE GmbH u.Co.KG Telefon[phone]
Pumpen- und Maschinenfabrik Telefax 07571/10988
D-72488 Sigmaringen www.eisele.de .[email protected] 2/8
3. Electrical connection
Allinstallation work may only becarried out by aqualified electrician in accordancewith the relevant
regulations.Electricalinstallationonsite has to be carried out insuchawaythat overload and
short-circuitprotectionofalllinesandoperatingequipmentis ensured.
3-pole line circuit breakers of characteristic Karerecommended.
Allelectricalinstallations must comply with the VDE regulations.
Mainequipotentialbondingandadditionallocalequipotential bonding between all conductive
parts(guiderail,mixer, immersed vessel, actuating device, catch,
Wirecable,installationframe,cover, service cover etc.) and the earthed conductor of the
operatingequipmentaretobecarriedoutonsite.Effectivenessistoberecordedandregularlychecked.
Whenusing remotecontrols/ switches,thefollowingpoints mustalsobeobserved. Thecontrol/switch
isto be made weather-proofin the operating and visible area ofthe mixer.
Ifthisisnotthe case, an EMERGENCY-STOPswitchmust be provided by the customer in thisarea.
Theregulationsof VDE 0113 or other existing regulationsare to be observed.
3.1 Neutral wire
Theneutralwiremustberoutedtotheswitchorcontrolsystem. 5-core wires must be used for
extensions.
3.2 Residual current device
Aresidual current device(RCD)withamaximum rated residualcurrentof30mA is also tobeinstalled
bythecustomerinadditiontothespecified fuse protection for each individual mixer. In the eventof
afault,thisRCDshould disconnect all power circuits,includingthesealcontrolandthermalsensor.
3.3 Nameplate
Beforeconnectingthemixer, make sure the ratings on thenameplatecoincidewiththeavailable
mainsvoltageandfrequency.
3.4 Thermal monitoring
Thermalcontactsare installed in the submersible motor for temperature monitoring. This ensures
thatthemotorisreliablyswitchedoffintheeventof inadequate cooling.
Inaddition,amotorprotectionswitchmustbe used.
Themotorprotectionswitch/motorprotectionrelaymustbetemperature-compensatedand
phasefailuresensitive.
Themotorcannotbeswitchedon again until it has cooled down.

Operating and Maintenance Instructions
Submersible Mixer GTWS/B/I 740/1040/1540/204/254/304
MTe12318a1p.
FRANZ EISELE u.SÖHNE GmbH u.Co.KG Telefon[phone]
Pumpen- und Maschinenfabrik Telefax 07571/10988
D-72488 Sigmaringen www.eisele.de .[email protected] 3/8
3.5 Electronic leakage control
Anelectrode isinstalledinthe gearboxoilcompartmentwhich indicates theingressoffluid viaasignal
lampof the electronic evaluation system (on theswitchorinthecontrolbox).
Whenafaultis indicated, change the oil and checkthemotorcompartment (see 5. Maintenance and
inspection).Ifthelamplightsupagain,themechanicalsealmustbe replaced.
Attention:thisleakagecontrolisaveryimportantcomponenttoensurethatthemixerfunctionscorrectly.
Atthesame time it is anitem of operating equipment whichensures protection.
Itisnotpermittedtooperatetheunitwithouttheleakagecontrol.
Correctfunctioning is tobecheckedandensured on start-upandmonitored at regular, short intervals.
The electronic evaluation system required for this is available as an accessory (not included in the
scopeofsupplyofthemixersGTWSBandGTWSI).
3.6 Motor protection
Whenmotorprotectionswitchesareusedwithonlyabi-metalactuator,noreliableshut-downisensured
inthe eventofoverheating,i.e. thethermalcontactsinstalled inthesubmersiblemotor mustbelooped
withthe control power circuit.
Thethermalcontactsare designed as normallyclosed (standard:230VAC,1.6Amax.)
3.7 Unit cable
Tomountacontrol/switch,the mixershouldbe loweredcompletelydue tothelength ofcableavailable.
Onlyoriginalcableorlineterminalsmaybeused.
Thedistancebetweenthe cable clampsmust notexceed50cm (GTWSB:70cm).Allscrewsareto be
protectedagainstworking loose.
Inareasinwhichscrapingagainststructuralpartsis to be expected, the connection cable should
beadditionallyprotectedand/ or fixed. The connection cable, protectivetubeandlineterminals are
tobechecked at regular,short intervalsfordamage and replaced after2 years atthelatest.
3.8 Recommended protective equipment
Topreventapotentiallydangeroussituation and prevent operation of the mixer when not submerged
asquicklyaspossible,westronglyrecommendinstallation
ofanautomaticloadgauge which switches the mixer offwhenitrunsempty.
4. Start-up
4.1 Free movement
Before start-up and after long periods of standstill, free movement is to be checked by turning the
propellertoandfro (first disconnect unit from power supply).
4.2 Checking oil level (see5. Maintenance and inspection)
Beforestart-up,the specified oil levelis to be checked byunscrewing the oil fillerplug marked in red
(01 19 mm af).

Operating and Maintenance Instructions
Submersible Mixer GTWS/B/I 740/1040/1540/204/254/304
MTe12318a1p.
FRANZ EISELE u.SÖHNE GmbH u.Co.KG Telefon[phone]
Pumpen- und Maschinenfabrik Telefax 07571/10988
D-72488 Sigmaringen www.eisele.de .[email protected] 4/8
4.3 Direction of rotation
Selectthe“thrust“direction. The propeller should rotate anti-clockwise (GTWS740/1040) as you
lookatit from the frontsideof thepropeller,clockwise at GTWS 1540/204/254/304.
TheoriginalEISELEswitchhasa phase inverter. If the propeller rotates in the wrong direction, press
thescrewdriverintotheslotintheplugandrotatethecontactsby180°untilthephase
inverterisre-engaged.
4.4 Checks
Ifthereare no obstacles in the tank, can the mixer make contact anywhere?
Doesthemixer also turn (two-phase cycle orblockage)?Switch off immediately and do notwaituntil
thermalcontactsaretriggered!
Allscrewsandconnectionsare to be checked for tight fit. Thesechecksaretobe repeated at regular
intervals.
Thewirecable/plasticcablemustnotruborjamanywhere.
The anti-rotation device must be secured with additional limit stops in such a way that the propeller
doesnotmake contact even if the retainingboltswork loose.
4.5Attention
Whenmoving the mixer,payattention totheconnectioncable.
Thewirecable must always be taut. Withaloose wire cable, the mixer couldsuddenlyswing against
the cable and damage it.
Donotoperate the mixer half submerged. Vibrationsonthe mixer and walls aretoogreat.
Operationisonlypermitted when the mixer is covered withatleast0.6 m of fluid.
Ifoscillations and vibrationsbeyond the normalamount occur during operation, the unit is to be shut
downimmediatelyandinspected. This also applies to all fastenings,connectionsandcable clamps.
5. Maintenance and inspection
Allmaintenanceand inspection work etc.may only be carried outwhen the electrical system isto be
disconnectedandprotected against being switchedonagain.
Duringallinspectionand maintenance work, no explosive atmosphere may exist.
Maintenanceandserviceworkmayonlybecarriedoutbyqualified,experiencedpersonnel.
5.1 Cleaning
Themixeristoberegularlycleanedofexternalencrustationandblockages.
Ifcorrosionbecomes visible, it must berectified by suitable means.
5.2 Check connection cable and fastenings
The motor cable is to be checked at regular, short intervals for bends and pinches as well as for
damage.
Thecableprotectionsystem(protectivetube,cableclamps)isalsotobe checkedfordamage,pinches,
movedor loose clamps etc.

Operating and Maintenance Instructions
Submersible Mixer GTWS/B/I 740/1040/1540/204/254/304
MTe12318a1p.
FRANZ EISELE u.SÖHNE GmbH u.Co.KG Telefon[phone]
Pumpen- und Maschinenfabrik Telefax 07571/10988
D-72488 Sigmaringen www.eisele.de .[email protected] 5/8
5.3 Cable winch and fixing cable
WhenEISELEhoisting tackle is used, the cable winch and the wire cablemustbecheckedaccording
toconditionsofuse, but at least once ayear.Thebearingbushesof the drive shaftandthedrum hub
aretobe oiled regularly and thecrown gear greased.
The brake mechanism itself must not be lubricated. It must be possible to turn the hand crank freely
counter-clockwisewithout load.
The wire cable (where applicable plastic cable) is to be checked for fibrous fractures, pinches and
otherdamage along the complete length.
5.4 Checking the gearbox oil
Theoilshouldbechecked every 6 months, or after 500 operating hours atthelatest.Todo this,
unscrewtheredscrewplug (01 19mm af) and insert athinobjectdiagonally downwards in order to
removeasampleofoil from the bottom area. If theoilcontainstoomuch foreign fluid, it will have
astronglyemulsified(creamy)appearanceandshouldbechanged.Thisinspectionshouldbe
repeated14days after changing the oil.
Iftheoilstillcontainstoomuchforeignfluid,thisprobablymeansthattheoutermechanicalsealis
defective.Thisshouldonly be repaired at aspecialistworkshop.
Theoilmustcomeuptotheprescribed level. If necessary,topitupwith normal transmission oil
SAE80-90.Donot overfill, but leave an air cushiontoallowthe oil to expand with heat.
Type 740/1040 :
Air cushion appr.. 3-5 cm
03
01
02

Operating and Maintenance Instructions
Submersible Mixer GTWS/B/I 740/1040/1540/204/254/304
MTe12318a1p.
FRANZ EISELE u.SÖHNE GmbH u.Co.KG Telefon[phone]
Pumpen- und Maschinenfabrik Telefax 07571/10988
D-72488 Sigmaringen www.eisele.de .[email protected] 6/8
Type 1540/204/254/304 :
5.5 Insulation measurement
Every 6 months, but at the latest after every 500 operating hours, an insulation measurement of the
connectioncable is to be carriedout.Thesensorwiremust be disconnected andthethermalcontacts
connectionsshort-circuitedinordernottodamagesensitiveelectroniccomponents.Thetestvoltage
mustbeselectedsothattheinsulationsarenotdestroyed.
5.6 Motor inspection
Themotor compartment is to beinspected when the oilis checked. The screwplug of the inspection
openingistoberemoved(0313mmaf).Iffluidruns out,themixermustno longerbeoperated;slightoil
leakagesofthe axial seal may bepresent. Have the mixer checkedby a specialist company.
Checksmoothrunningofthemixer, itsgear and all bearings by turning.
5.7 Oil change
Anoilchangeistobecarried out at least once a year or ifuseddailyforlongperiodsafter every 1000
operatinghours.Unscrewredscrewplug(0119mmaf),releaseanyoverpressure.Unscrewoildrain
plug(02 24mmaf).Ensurethattheoilisthoroughlydrainedbefore fillingwithnew oil. TheDowtyrings
necessaryforsealing the plugs are tobe replaced.
Theairspace remaining above the oilis essential and enables thermal expansionof the oil.
Oiltype:conventional gear oil SAE80-90
Oilquantity, type 740/1040 approx.3.6 l, type 1540/204 approx. 5.6l,type 254/304 approx. 4,6 l
Oillevel
01
02 03

Operating and Maintenance Instructions
Submersible Mixer GTWS/B/I 740/1040/1540/204/254/304
MTe12318a1p.
FRANZ EISELE u.SÖHNE GmbH u.Co.KG Telefon[phone]
Pumpen- und Maschinenfabrik Telefax 07571/10988
D-72488 Sigmaringen www.eisele.de .[email protected]
5.8 Changing the propeller
Beforedismantlingthepropeller, allow any excess pressure in theoilchamber to escape by
looseningtheredplugscrew(0119mmaf)slightlyandthentighteningitagain.Themechanical
sealremainsontheshaft.Beforeassembly,clean the shaftendandfeatherkey,remove
anybursand treat with fretting rust preventives (anti-seize or possibly grease/oil).
Usenew securing elements.
5.9 Other
Allscrewconnectionsaretobe checked regularly for tight fit.
The customer is to ensure that all protective and monitoring equipment is connected and functional.
Thisisto be permanently ensured with suitable measures.
6. Repairs
Repairsbeyondthose mentioned above may onlybecarried out in the Eiselefactory or in a
specialistworkshopauthorisedbyus.
6.1 Bearings
Thebearingsare to be completely replacedat the latest after11000 operating hours.
6.2 Mechanical seals
Themechanicalseals are to be replaced atthe latest after every 3000 operatinghoursor after
2years.Mechanicalsealsmayonlybereplacedcompletely. Mechanical seals which have been
removed(disassembled)oncemustnotbe reinstalled.
6.3 Cables and cable protections systems
Theconnectioncable,protective cable tube and cable clamps mustbereplacedat least every
2years.Damagedcables must never continue to be used.
7. Troubleshooting
7.1Agitator won't start.
Check: -residual-current-operatedcircuitbreaker,mainswitchandfuses
-Motorpreviously overloaded, thermal switchesactivated
due to-two-phaseoperation
-overload
-inadequatecoolingduetoinsufficientsubmersiondepth
Eliminatethecause of the error andletthe agitator cool down beforeswitching it on again.
7/8

Operating and Maintenance Instructions
Submersible Mixer GTWS/B/I 740/1040/1540/204/254/304
MTe12318a1p.
FRANZ EISELE u.SÖHNE GmbH u.Co.KG Telefon[phone]
Pumpen- und Maschinenfabrik Telefax 07571/10988
D-72488 Sigmaringen www.eisele.de .[email protected]
7.2 Leak test indicator lamp illuminated.
Changeoil as described insection 5.7. If theindicator lamp lights up again after ashort time, this
meansthatforeignfluidhasgotintothe gearbox between the motor and agitator.Continued
operationcan cause seriousdamage to the seals, bearing and motor. Such damageis not covered
bytheguarantee.Inthiscase,the outer mechanical seal is probably defective.
Thedamagemay only be repairedby a specialist workshop.
7.3 RCD device
Iftheresidual-current-operatedcircuitbreakerisactivated,theinstructionsinsection5.6mustbe
observedwithout fail.
8. Safety instructions
Pleasetakeexplosionprotectionveryseriously. Observe all relevant regulations and safety
instructions.Theslightestcarelessnessmaycauseseriousdamagetopropertyandinjuries!
Allmaintenanceworketc.mayonlybecarriedoutwhentheunitisdisconnectedfromthepower
supplyandprotectedagainst being switched on again.
Thewindingsareto be discharged, all wiresdisconnectedand short-circuited.
Electrostaticchargesandmechanical sparks must always be avoided.
8.1 The applicable regulations concerning
-industrialsafety
-plantdesign
-andelectrical connection
e.g.specifications of professional associations,VDE (German EngineeringAssociation),etc.
mustbe strictly observed.
8.2 Toxic gases! Risk of explosion!
Mostofthefluidsprocessedconsist of fermenting biomass (e.g. liquid manure, sludge), which
canformtoxic and explosive gases.The release of these gasesis intensified by pumping and
stirringactions.
Forthisreason, smoking and naked flames areprohibited,adequate ventilation must be
ensured,andthe specifications of the professional associationmust be observed.
8.3 Use in agriculture
Bindingthreads,strings andsimilar matter in liquid manure leadtooperatingfaultsinthe mixer.
Thesethreads will not rot .The long-fibres ofthethreadswrapthemselvesaroundthepropeller,
oftenresulting in a significantly reduced output. Such threadsmayalsogetcaughtbetweenthe
propellerandgearcase and so destroy the seal. Inyourowninterest, please bear in mind the
possibledisadvantagesofdischarging these threads into the liquid manurecycle.
8/8