IMER SYNTESI 140 EL Manual

SYNTESI
140 -160 -190 - 250 -
300 - 350 EL
CONCRETE MIXER
Operating & maintenance
GB

IMER INTERNATIONAL S.p.A.
SYNTESI 140 - 160 - 190 - 250 - 300 - 350 EL
2
7
11 10 15 9
1
12
13 43
5862
14
FIG.1
POS.
GB
1
Frame
2
Wheel
3
Arm
4
Motor
5
Belt
6
Bowl rotation reduction
gear
7
Tank
8
Drive belt guard
9
Arm closure
10
Bowl tipping reduction
gear
11
Handwheel
12
Start and stop switch
13
Electrical connection
socket
14
Tow bar
15
Tipper stop
Special attention must be given to warnings with this symbol:

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IMER INTERNATIONAL S.p.A.
SYNTESI 140 - 160 - 190 - 250 - 300 - 350 EL
Dear customer,
congratulations on your choice of purchase: the IMER CONCRETE
MIXER,theresultofyearsofexperience,isaveryreliablemachine
equippedwith allthe latest technical innovations.
- WORKING IN SAFETY
Inordertobeabletoworkincompletesafety,thefollowinginstruc-
tions must be readcarefully.
This OPERATINGAND MAINTENANCE manual must bekeptonsite by
thepersonresponsiblefortheworksite,e.g.thesiteforeman,andmust
always be available forconsultation.
Themanualshouldbeconsideredasbeinganintegralpartofthemachi-
ne,andmustbekeptforfuturereference(EN12100)untilthemachine
itselfisdisposedof.Inthecaseofdamageorlossitwillbepossibleto
ask the manufacturer for another copy.
The manual contains important information regarding site preparation,
installation, machine use, maintenance procedures and requests for
spare parts. In any case, adequate experience and knowledge of the
machineisessentialformaintenancepersonnelandtheuser.
Toguaranteecomplete safetyoftheoperator,safeoperation andlong
life of equipment, follow the instructions in this manual carefully, and
observeallsafetystandardscurrentlyinforceforthe preventionof
accidents at work. Use personal protection (safety footwear, suitable
clothing, gloves, goggles,etc.).
- Always make sure that signs arelegible
- Itisstrictlyforbiddentocarryoutanyformofmodiicationto
the structureor workingparts ofthe machine.
IMER INTERNATIONALdeclineanyresponsibility in the caseofnon-
compliance with laws and standards governing the use of this equip-
ment.Inparticular:improperuse,defectivepowersupply,lackofmain-
tenance, unauthorised modifications, partial or total failure to comply
withinstructionscontainedinthismanual.
IMER reserves the right to modify the characteristics of the concrete
mixerand/orthecontentsofthismanualwithoutanyobligationtoupda-
te previous machines ormanuals.
1. TECHNICAL SPECIFICATIONS
Table1 reports the technical specifications of the concrete mixer, with
reference to figure1.
2. DESIGN STANDARDS
TheSYNTESI140concretemixerhasbeendesignedandmanufactu-
redapplyingthefollowingharmonisedstandards:EN12151:2008;EN
12100-1/2:2005; EN60204-1:2006.
3. SOUNDPRESSURELEVELANDVIBRATIONS
Table2showsthesoundpressurelevelmeasuredloadlessattheope-
rator’s ear(LPA)andofthevibrationstransmittedduringoperation.
4. DESCRIPTION ANDOPERATION
- The concrete mixer is designed for use on construction sites,
for preparing and mixing concrete, mortars, cement mixes, etc.
-Useofthemachineisunadvisablewithtemperaturesbelow
0° C.
Theconcretemixercomprisesaframe(ref.1,fig.1)withtworigidwheels
(ref.2,fig.1);whichsupportsaswingarm(ref.3,fig.1).
Onthisismounted the reduction unit (ref.6, fig.1), that is setinmotion
bytheelectricmotor(ref.4,fig.1)viaapoly-Vbelt(ref.5,fig.1).
The mixing drum (ref.7, fig.1) is connected on the reduction unit taper
output shaft, locked in place by a special screw.
Drumtippingisgovernedbymanualrotationofthehandwheel (ref.11,
fig.1),thatactsonthehelicalwheel-worm screwreductionunit(ref.10,
fig.1) connected to thearm.
The electric motor is turned on and off by two special buttons on the
electric panel (ref.12, fig.1).
The electric panel has a plug (ref.13, fig.1) for connecting to the electric
power supply.
There is a handle (ref.14, fig.1) for on-site handling (with the machine
unloaded).
5. SAFETY PRECAUTIONS
TheIMERconcretemixerhasbeendesignedforworkonbuildingsites
anddoesnothaveitsownlighting,thereforetheplaceofworkmustbe
well lit (min. 300lux).
-It must never be usedinenvironments where the danger of
explosions and/or iresexists.
1. TheIMERconcretemixercanonly workiffittedwithallthepro-
tective devices in perfect conditions.
2. Do not useimprovised and/or faultypower lines.
3. Theconnectionlinesonthesitemustbelaidinsuchawayas
nottobeabletobe damaged. Donotplacetheconcrete mixeron
the powercable.
4. Socket-plug connections must be placed in such a way as to
prevent the admission of water. Only use connectors fitted with
protectionagainst splashesof water (IP67).
5. Repairs to the electric systems must be carried out by skilled
personnelonly.Donotcarryoutadjustmentormaintenanceope-
rationswith themachine powered ormoving.
-Keepallpartsof body and/ortoolsclearofmixingdrumdu-
ring operation.
-Whenhandlingthecomponents neededforpreparingmor-
tars,take carenottoraisedustthatcouldbe inhaled. Ifthis is not
possible,wearamasktoprotectthemouthandnose.
TABELUL 2
Model
Type of motor
LpA
Aeq
Syntesy 140 EL
Electric
72 dB
2.14 m/s
Syntesy 160 EL
Electric
72 dB
2.14 m/s
Syntesy 190 EL
Electric
72dB
2,14 m/s
Syntesy 250 EL
Electric
72dB
2,14 m/s
Syntesy 300 EL
Electric
72dB
2,14 m/s
Syntesy 350 EL
Electric
72dB
2,14 m/s
ORIGINAL INSTRUCTIONS

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IMER INTERNATIONAL S.p.A.
SYNTESI 140 - 160 - 190 - 250 - 300 - 350 EL
Table 1 - TECHNICAL DATA
Model
Syntesi 140
Syntesi 160
Syntesi 190 EL
Syntesi 250 EL
Syntesi 300 EL
Syntesi 350 EL
Drum capacity
160 l
138 l
190 l
235 l
314 l
345 l
Mix capacity
(approx.)
115 l
100 l
160 l
190 l
250 l
280 l
Effective
output
(approx.)
70 l
60 l
120 l
140 l
190 l
210 l
Drum speed
24 rpm
Direction of
drum rotation
(view from
loading mouth)
Anti-clock wise
Wheel
dimensions
200 x 50 mm
295 x 54 mm
370 x 85 mm
385 x 90 mm
Motor rating
0.3 kW
1 kW
1.4 kW
1.1 kW
1.4 kW
1.1 kW
Voltage
230 V
230 V
380 V
230 V
380 V
230 V
380 V
230 V
380 V
Current
2.2 A
5 A
2 A
5 A
2 A
8 A
2.7 A
8 A
2.7 A
Frequency
50 Hz
Motor rpm
2750 rpm
2850 rpm
2800 rpm
2850 rpm
2800 rpm
2840 rpm
2840 rpm
Protection
category
IP 55
Overall
dimensions (w
x l x h)
800x1330x1280mm
793x1465x1334 mm
840x1465x1476 mm
930x1610x1575 mm
930x1610x1600 mm
Weight
59 kg
54 kg
106 kg
119 kg
173 kg
175 kg

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IMER INTERNATIONAL S.p.A.
SYNTESI 140 - 160 - 190 - 250 - 300 - 350 EL
-Tostoptheconcretemixerfromworking,usesolelythespe-
ciic switch (ref.12,ig.1).
6. ELECTRICAL SAFETY
The IMER concrete mixer is manufactured according to standard EN
60204-1. It is protected against water sprays (IP 55) and is equipped
withoverloadprotectionandaminimumvoltagecoil.
- If the protection guards are removed during repair opera-
tions, they must be correctly replaced when repairs are completed
(ref.8 and ref.9ig.1).
The risk of deteriorationofthepowercabletotheelectric motordueto
twistingispreventedbyastop(ref.15,fig.1)whichpreventsthecomple-
te rotation of the mixing drum.
- Check periodically the condition ofcables which come out
for electricpanel.
7. MECHANICAL SAFETY
All dangerous areas on the IMER concrete mixer have protective casing
whichmustbekeptinstalledatalltimesandmaintainedinperfectcon-
dition, e.g. the drive belt guard(ref.8fig.1).
-Themixingdrumtiltinghasastopper(ref.15,ig.1)toprevent
complete rotation and thus damage to the electrical motor connec-
tioncable.Neverapproachthisareawithpartsofthebodyduring
tilting.
-Whentippingthe bowl,neverrotatethecrankin suchaway
as to force itbeyond the stop device.
8. TRANSPORT
-Theconcretemixermustnotbetowedontheroadbyavehi-
cle,sinceitswheelsareonlysuitablefortransportingthemixeron
the building site, with themixing drum empty.
Tomovethemachinemanually,extractthedrawbaranduseitasalever
for lifting (ref.A;Fig.3).
Tocarrythemachinewithafork-lifttruck,engagetheforksinthespecial
seats (ref.B;Fig.3).
For liftingwiththe aidofahoist orsimilarequipment, itisnecessary to
turnthemouthofthedrumdownwardsand,usingastaywithtwoarms,
hookontothespecialholesonthearm (ref.C,fig.3).
- Always disconnect the plug from the power supply before
moving the cementmixer.
9. INSTALLATION
The concrete mixer is delivered ready for use.
- Install machine on lat and solid ground (maximum admis-
sible gradient: 5°; see ig.6)toprevent the mixer feetfrom sinking
into the ground or to prevent the mixer from overturning during
operation.
During mixer installation ensure easy access for barrows under the
mixer drum for loading.
10. ELECTRICAL CONNECTION
- Make certain that a residual current device and miniature
circuitbreakerareinstalledontheelectricalpowerline.
10.1 Connectingversionswithmotor230V/50Hz
Ensure that the supply voltage corresponds to machine dataplate speci-
fications. At full load it must be between 205V and 240V.
- To supply the machine it is necessary to use a 2-pole +
ground cable in order to ensure the machine's connection tothe
site's equipotentialsystem.
10.2 Connectingversionswith motor110V/50Hz
Ensure that the supply voltage corresponds to machine dataplate speci-
fications. At full load it must be between 95V and 130V.
- To supply the machine it is necessary to use a 2-pole +
ground cable in order to ensure the machine's connection tothe
site's equipotentialsystem.
10.3 Connectingversionswithmotor380V/50Hz
Ensure that the supply voltage corresponds to machine dataplate speci-
fications. At full load it must be between 360V and 400V.
If the direction of rotation of the drum is opposite the one required
(clockwisewhenseenfromtheloadingmouth),swapovertwowiresin
the supplyplug.
- To supply the machine it is necessary to use a 3-pole +
ground cable in order toensure the machine's connection to the
site's equipotentialsystem.
10.4 Sizing the power supplycable
The electrical powercable must be suitably sized to avoid voltage drops.
Cabledrumsmustnotbeused.Thesizeofthepowercablewiresmust
be based on operating current and length of the power line to prevent
excessive voltage drops(tab.3).
T
a
b
e
l
u
l
3
Model
Type of motor
Cable (mm²)
1,5
2,5
4,0
Syntesi 140L
230V 2.2 A
0-35
36-50
-
Syntesi 160 L
230V 2.2 A
0-35
36.50
-
Syntesi 190 EL
Syntesi 250 EL
230 V
5 A
0÷34
35÷57
58÷90
Cable
lenght
(m)
110 V
12 A
0÷14
15÷24
25÷38
380 V
2 A
0÷64
65÷100
-
Syntesi 300 EL
Syntesi 350 EL
230 V
8 A
0÷21
22÷36
37÷57
110 V
14,5 A
0÷12
13÷20
21÷31
380 V
2,7 A
0÷48
48÷80
-
Cables usedonconstructionsites must befittedwithsuitableexternal
sheathing that is resistant to wear, crushing and extreme weather condi-
tions (for exampleH07RN-F).
- All power supply installations must comply with CEI 64-8
standards(harmoniseddocumentCENELECHD384).
11. MACHINE START-UP
Before connecting the cement mixer to the power supply, check that
allthesafety devicesareinplaceand workingproperly,that thepower
supplycableisingoodconditionandthattheplugsandsockets(of
thewaterprooftype)arenotwet.Checkthatthemetalgrillesprotecting
theelectricmotor arenotclogged,toprevent overheating ofthemotor
itself.
Connectthepowersupplycabletotheelectricpanelplug.Startthe
concretemixerusingtheswitchontheelectricpanel(ref.12,fig.1).This
comprises two buttons: green for switching on, red for stopping. The
switch is provided with minimum voltage protection: in the event of a
power failure due toaccidentalcauses, tostartagain, pressthegreen
start button.
-The electricmotor is protected againstoverloads by atem-
perature sensor. In the event of overheating it stops automatically.
Wait5minutesbeforerestartingtheelectricmotor.
12. EMERGENCY STOP
-Inthecaseofanemergency,stopthemachinepressingthe
redstopbutton(protruding).Thendisconnectthepowerplug.To
startagain,re-connecttheplugandpressthestartbutton.
13. USE
To obtain optimum mixing and regular operation, the concretemixer
must be installed in the horizontal position.Theusershould adjustthe
inclinationofthemixingdrumdependingonthemixtobemade.
- Insert materials while the drum is turning.
Drumtiltmaybeadjustedwhile materials arebeingloaded, inorderto
keepthemixfrom drippingout of the drum.
Before beginning to load the materials inside the drum, it is best to pour
a certain quantity of water in first.
Whenloading,insertthevariousmaterialstobemixedalternately,inthe
amountsrequiredforthetypeofmixtobeobtained,soastoreducethe
mixing time to aminimum.
Keep the drum running until a smooth mix having the desired consisten-

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IMER INTERNATIONAL S.p.A.
SYNTESI 140 - 160 - 190 - 250 - 300 - 350 EL
cy is obtained.
Emptying must be carried out with the mixing drum working, moving
the drum mouth downwards by turning the hand-wheel provided (ref.11,
fig.1).
Ifpartofthebatchisleftinthedrumforlateruse,itisnecessarytoleave
the drum turning.Inany case, minimise the time the batch stays inthe
drumaftertherequiredconsistencyhasbeenreached.
-Donotintroducepartsofbodyand/ortoolsinsidethemixer
drum while it isrunning.
14. MAINTENANCE
- All maintenance operations must be done by experienced
personnel, after having shut down the motor, disconnected power
supply and emptied the mixing drum.
Every two working months, check the following:
• belt tension.
• signsofwearonthe poly-V belt orthepulleys.
• tighteningofthescrewssecuringthedrumontothegearunit.
• Cleantheventilationslotsandthebodyoftheelectricmotortoremove
dirt and rubbish.
• lubricatethewormscrewandgearteethwithgrease.
Check onaweekly basisthatthecontacts ofthe plugandsocket con-
nectorontheelectricalpanelareclean,dryandfreeofrust.
Ifthecementmixeristobeusedafterstandingforalongtimeoutside,
checkthatthetippingreductiongearisproperlylubricated.
14.1 Cleaning
After each daily work session or before long periods of inactivity, the
mixingdrummustbecleanedthoroughlybothinsideandoutside.
-Donotstartthemixerwhilecarryingoutcleaningopera-
tions.
- If the protection guards are removed for cleaning, always
replacethemcorrectlyattheendofthecleaningoperation.
Whenusingahoseforcleaning,donotdirectthesprayintotheplug-
switch unit.
14.2 Cleaning instructions
Clean the outside of the mixer with a brush and water. Scrape off any
cement or concretedeposits.
Thereshouldnotbeanydepositsofcementorconcreteinsidethedrum.
Theinsideofthedrumcanbecleanedbetterif,attheendofthework
session or before a prolonged period of inactivity, the drum is rotated
withafewshovel-fullsofgravelandwater.Thiswillpreventanyresidue
of cement orconcretefrom hardening.
Themixingdrummustnotbestruckwithhardobjectssuchashammers
orshovels,etc.Adenteddrumwillreducethemixingeffectsandmake
cleaning moredifficult.
14.3 Tensioning the drivebelt
1. Switchofftheelectricmotoranddisconnectthepowerplug.
2. Removethebeltguard(ref.A,fig.8)slackeningitsfasteningscrews.
3. Loosen the 4 screws (ref.B, fig.4) locking the support of the electric
motorandpullthebelt(ref.C,fig.4)bymeansofthescrew(ref.D,fig.4):
ifthebelttensioniscorrect,applyingaforceofapprox.F=0.6Kgatthe
centreofthefreepartofthebelt,theresultingcambershouldbeapprox.
f=5 mm(fig.9).
-Donotstretchthebeltexcessively;thiswillreducebeltlife,
aswellasthelifeofthegearboxandelectricmotorbearings.
4. Aftertensioning,tightenthe 4screws(ref.B,fig.8).
5. Refitthebeltguard(ref.A,fig.8)usingtherespectivescrews.
14.4 Changing the drivebelt
- Thebelt must be made of insulating material toensurethat
double electrical insulation of the cement mixer is maintained.
Only use original IMER spare belts.
1. Switchofftheelectricmotoranddisconnectthepowerplug.
2. Remove the belt guard (ref.A, fig.8) slackening its fasteningscrews.
3. Loosen the 4 screws (ref.B, fig.4) locking the support of the electric
motorandloosenthebelt(ref.C,fig.4)bymeansofthescrew(ref.D,
fig.4)tomakeitcomeoutofthepulleysoftheelectricmotorandre-
duction unit.
4. Insert the new belt,first intothepulley ofthe reduction unit and then
intothatoftheelectricmotor;makesurethesixcrestsofthebeltare
properlyinserted inthe races ofthepulleys.
5. Pullthebeltbymeansofthescrew (ref.D,fig.4): ifthebelttension is
correct,applyingaforceofapprox.F=0.6Kgatthecentreofthefree
partofthebelt,theresultingcambershouldbeapprox.f=5mm(fig.9).
6. After tensioning, tighten the4 screws (ref.B, fig.8)
7. Refitthebeltguard(ref.A,fig.8)usingtherespectivescrews.
14.5 Wheel replacement
Havingtoreplaceoneorbothwheels,itisrecommendedtouseafork-
lift truck:
1. Raise the machine by a few centimetres, engaging the forks in the
special seats (ref.B;Fig.3).
2. Pulloutthesplitpin(pos.28, pag.24)andremove the wheel(ref.29,
pag.24).
3. Insert the newwheel and refit the split pin.
4. Lower the machine to the ground.
If you do not have a fork-lift truck, proceed as follows:
1. Raise the machine a few centimetres from the ground, resting the
wheel axle on a sturdyandstable support (e.g. piece of wood or other
homogeneous material). The height ofthispiece should be slightly hi-
gher than the wheelradius.
2. Pulloutthesplitpin(pos.28, pag.24)andremove the wheel(ref.29,
pag.24).
3. Insert the newwheel and refit the split pin.
4. Lower the machine to the ground.
14.6 Removing and reitting thedrum
If it is necessary to remove the drum, when refitting it is necessary to:
1. carefullycleantheconeoftheshaftofthereductionunitandthecone
of the bush of the drum.
2. Install the drum on the reduction unit, centring the bushing with the
reduction unit tapershaft.
-The slotformedin the bowl bushing mustit ontothepinon
the reduction gearshaft.
3. Tightenwiththespecialscrew,usingthetorquesettingsgivenintable
4.
Table 4
Model
Tightening torque
Syntesi 190 EL
Syntesi 250 EL
22 ± 2 Kgm
Syntesi 300 EL
Syntesi 350 EL
30 ± 2 Kgm
14.7 Drum tilting brake
Therotationshaftofthetippinghandwheel(ref.A,fig.6)isfittedwithtwo
brakes(ref.B,fig.6),topreventitturningindependentlywhenthemixing
drum isemptied.
Ifthis occurs, it is necessarytoreplace these brakes with other IMER
spares.
14.8 Repairs
Repairs to electrical systems must be carried out exclusively by spe-
cialist staff.
Original IMER spare parts only must be used and must not be modified
in any way.
- Donotstartupthemixerwhilerepairsarebeingcarriedout.
- Iftheprotection guards are removed duringrepairoperations,
theymustbecorrectlyreplacedwhenrepairsarecompleted.

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IMER INTERNATIONAL S.p.A.
SYNTESI 140 - 160 - 190 - 250 - 300 - 350 EL
15. RESIDUALRISKSAND SAFETYSIGNS
Though the concrete mixer has been manufactured infull compliance
with current standards, residual risks exist that cannot be eliminated,
which involve the use of suitable individual protective devices.Adequate
warningsignsfittedonthemachinepointoutboththerisksandthe
behaviour to befollowed.
NOISE RISK
16. TROUBLESHOOTING
-CAUTION!!!Allmaintenanceoperationsmustbeperformed
exclusivelywiththemachineswitchedoff,withtheselectorsetto
"0"andthepowerplugdisconnectedfromthemains.
Ear protection must be worn
RISK OF INJURY TO THE HANDS
Safety gloves must be worn
RISK OF INJURY TO THE EYES
Eye protection must be worn
ABNORMAL USE RISK
Reading the manual before use is compulsory
RISK OF DRAGGING, ABRASION AND CUTTING
Do not remove the guards
Do not touch transmission components
RISK OF ELECTROCUTION
Danger electricity
Please be reminded that checking the use ofIPDs is delegated tothe
employer.
Fault
Cause
Remedy
Motor does not
start when switch is
turned
Defective power cable
Check power cables *
Plug not inserted in
socket correctly
Ensure correct
connection
Power cable from
plug to control panel
detached
Remake the
connection *
Loose wire inside
motor circuit board
Remake the
connection *
A wire has become
disconnected inside
the panel
Remake the
connection *
Faulty main switch
Replace switch
The overload safety
device has been
activated
Wait for a fewminutes
and then try restarting
the machine
When unloading,
the handle will turn
by itself
Tipping brake worn
Replace the brake
During mixing the
mixer drum rpm
decreases
Belts are worn or
slack
Tension or replace
the belts
* Operation to be carried out by an electrician