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.
