Muto Denki MLIX Series User manual

Feb.2022
Muto Turbo Blower
MLIX・GLIX Series
Instruction Manual
Muto Denki Corporation
Headquarters: 751,Nishi Hassaku-cho,Midori-ku,Yokohama,Kanagawa,Japan226-0024
TEL:[phone], FAX:[phone]
OsakaBranch: 4-14, Toyosaki3,Kita-ku, OsakaCity,Osaka,Japan531-0072
TEL:[phone], FAX:[phone]
ChinoPlant: 11400-1107,AzaHarayama,Tamagawa,ChinoCity,Nagano,Japan391-0011
TEL:[phone], FAX:[phone]
web: http://www.mutodenki.co.jp e-mail: [e-mail]
Readthismanualcarefullybeforeusingtheproduct.
Wrongoperationsdeviating fromthismanualmayleadtoseriousaccidents or damages.
Keepthismanualconvenient locationforeasyaccess.
TMB-076E-01

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Table of contents
1. Introduction·········································································· 3
2. Safety precautions·································································3
3. Receiving Checkups ····························································· 5
4. Transportation and Handling···················································· 5
5. Storage ··············································································· 5
6. Installation············································································ 5
7. Piping·················································································· 5
8. Connection to Power and Test run ············································ 5
9. Precautions for Operation ······················································· 6
10.Maintenance ········································································ 6
11.Troubleshooting···································································· 7
12.Instruction for belt tensionAdjusting and/or belt Replacing············· 8
13.Instruction for Disassembly and Reassembly······························ 9
14.Structural drawing·································································· 11
15.Consumables······································································· 12
16.Motor·················································································· 13
17.Inquiry················································································· 13
18.Limited Warranty··································································· 13

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1. Introduction
Thankyou forpurchasingtheMutoTurboBlower.
Thismanual containstheinformationyou need forhandling,installing,operatingandmaintaining your
new equipment correctly, to ensure trouble-free operation and long service life. Please read it
thoroughly. Afterreadingthismanual,keepitinconvenientplaceforeasyaccess.
2. Safety precautions
Before starting any work such as handling, installing, operating and maintaining, carefully read this
manual and all documents attached to the product for proper use. Use the product after thorough
understandingofall productinformation,safetyinformationand precautions.
Inthismanual,safetyprecautionsare classifiedas“Warning”and “Caution”.
Thistagindicatesthatwrongoperationorusemayleadtofatallossorserious
injury.
This tag indicates that wrong operation or use may lead to human injury or
lossofproperty.
Eventheitemsunder may leadtoseriousresultsdependingonthecircumstances.
Those precautions include very important information and it is strongly recommended to follow them
strictly.
(Placetoinstall ）
⚫The product with non-explosion proof type motor shall not be installed in explosive or
inflammable atmospheres. Under those atmospheres, install the product with explosion proof
type motor conforming to the degree of danger in that place. Otherwise injuries, explosions or
firesmay occur.
(Gas)
⚫Unless otherwise agreed separately, the product can handle only normal air. It is cannot be
handled any other gas (explosive, toxic, corrosive, high temperature and so on), liquid or solid
materials. Otherwiseinjuries,explosionsorfiresmayoccur.
(Wiring)
⚫Refer to the instruction manual of motor. Otherwise fires, electrical shocks or explosions may
occur.
⚫Do not touch the wiring. Shut off the power before checking the wiring. Otherwise electrical
shocksmayoccur.
(Operation )
⚫Do not get close to or look into the openinlet or outlet manifold during the product is running as it
isverydangerousas follows.
Inlet : Clothing which you are wearing or a part of your body will be sucked in. As a result,
injuriesmay occur.

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Outlet:Astrongwindorflownthingsmaycauseinjuries.
⚫Do not insert finger(s) or hand(s) into the openingof the safety covers such as beltcover. Do not
remove the safetycoverduringtheproductisrunning.Otherwiseinjuriesmay occur.
⚫Shutoffthemainpowerswitchincaseofpowerfailure.Otherwiseinjuriesmayoccur.
(Safetycomponents )
⚫The product is shipped with metal mesh or pin attached to the inlet and outlet manifold, or
otherwise the optional parts are included. If these parts are removed by some reason, take
equivalentsafetymeasures.Otherwiseinjuriesmayoccur.
(DisassemblyandReassembly)
⚫Beforedisassemblyand reassembly,makesuretoshutoffthemain powerandpreventpowerto
be turned on.Otherwiseinjuriesorelectrical shocksmayoccur.
( Others)
⚫Follow thelabelsattachedtotheproduct.Otherwise seriousresultsmayoccur.
(Transportation )
⚫Check the weight of the product with the specifications, drawing or catalogue before
transportation, and be careful not to drop or tip over the product during transportation. Otherwise
injuriesorbreakagesmayoccur.
(Installation )
⚫Removeallofthe inflammablefromtheproductanditsvicinity.Otherwisefiresmayoccur.
⚫Ventilate the room to keep the ambient temperature below 40 deg. C. Otherwise motor-damage
orbearing-damagemayoccur.
(Operation )
⚫If the product has high temperature label, do not touch the product with body or hand during the
product is running. Take safety measures such as enclosing by fence or net. Otherwise burns
mayoccur.
⚫Stop operating as soon as abnormality is found. Otherwise injuries, electrical shocks or burns
mayoccur.
⚫Checkrotational directionofthemotorbeforeoperating.Otherwisebreakagesmayoccur.
(DisassemblyandReassembly)
⚫Disassembly and reassembly should be done by experts. Otherwise injuries or breakages may
occur.
⚫Do not use the parts of the product for the use on other equipment. Do not use unauthorized
parts fortheproduct.Otherwiseinjuries or breakagesmayoccur.

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3. Receiving Checkups
Check if the products you have received are what have been ordered by referring to the ordersheet,
drawings,invoices,etc.
(1) Check the nameplateson the blower and the motor,and confirm if it matcheswhat have been
ordered.
(2) Countthenumberofproductsreceived,confirmif itagreeswithwhathavebeenordered.
(3) Checkwhetherthereisanybreakageduring transportation.
4. Transportation and Handling
Whentransporting theblower,liftitsbase.Becarefulnottogiveshocks to anypartsoftheblower.
5. Storage
Iftheblowerisstoredbeforeinstallation, becarefulasfollows:
(1) Store the blower in a room where ventilated, not humid nor dusty. Otherwise the blower may
havesometroubles.
(2) Beforeoperatingtheblowerwhichhasbeen stored forlongperiodoftime,checkifthe bearing
and the insulation of the motor have no problem. And carefully check if the blower has no
abnormality.
(3) While the blower is stored, rotate the blower shaft several times by hand every month. If this
procedureisnotperformed, thelifeofthebearingmaybecomeshort.
6. Installation
The blower should be placed on the flat and rigid foundation with anchor bolt or vibration isolator. If
therearegapsbetweenthebaseand foundation,fillthegapswiththinsteelsheets(shimming).
Clearsomespace to maintaintheblower.
7. Piping
Use rubber sleevesor flexible joints toconnect to piping to avoidunnecessary force to the blower and
to isolate the vibration from the blower. If direct connection to piping is inevitable, do not give the force
to the blowerbydimensionaltolerances,weightofpiping, thermalexpansionofpiping,etc.
8. Connection to Power and Test run
(1) Turntheblowershaft by handtoverifyfreerotationwithoutrubbingornoise.
(2) Check the belt tension and the pulley alignment referring to “12. Instruction for belt tension
Adjustingand/orbeltReplacing”.
(3) Check the nameplates of blower andmotor and confirm if they agree with the specification for
power supply, thenconnecttopowerlineunderinstructionbyelectricalengineerasperelectric
technical standardsandwiringregulation.
(4) Jog the blower and check the rotational direction is the same as the mark. If the rotational
direction is opposite, change the wiring connection. The direction can be reversed by

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interchanging any two line leads. If the blower is run continuously with reverse rotational
direction, itcannotperformasspecifiedandmayleadtoseriousaccident.
(5) Runningtheblower,measuretheelectriccurrent(averageofeach of3 phase)ofthe motor.Ifit
exceeds the rated current, use at below the rated current by adjusting the air volume with
dumper and so on. After running for a while,if there is no abnormal vibration or noise, test run
can be concluded. If any abnormality were found during test run, corrective action should be
takenreferring to “11.Troubleshooting”.
9. Precautions for Operation
Beforeoperating theblower,understandthefollowingthoroughly.
(1) Continuoususeatsmallairvolumewillleadtofandurability problem.
(2) The blower is designed to handle clean air. It cannot handle for air containing particulates and
dust, corrosive gases nor inflammable gases. A standard model can handle the air in the
rangeof -15 to50deg.C.
(3) Because the belt hasinitial elongation, the belt tensionmay decrease. The belt tension should
be checked and adjusted before operating the blower. The initial elongation practically stops
after a few days beginning to use the blower. During that time, the belt tension should be
checkedandadjustedeveryday.
Itisnoproblemthatpowderof thebeltcomesoutuntilthebeltfitinwiththepulley.
10. Maintenance
Thefollowingmaintenance isrecommendedtokeepthebloweringoodcondition.
(1) Payattentiontoventilation to keeptheambienttemperatureintherangeof -15to40deg.C.
(2) Pay attention to abnormal noise, abnormalvibration, abnormal temperature and air leakage. If
abnormalityis found, takeactions referringto“11.Troubleshooting”.
(3) Periodically stop the blower, and check the tension and condition of the belt. If the tension is
too low or the belt is damaged, adjust the tension or replace belt referring to “12. Instructionfor
belttensionAdjustingand/orbeltReplacing”.
(4) The blower bearings are non-lubrication type. For motor bearings, refer to the instruction
manualofthemotor.
(5) If the blower has filter at the inlet, check the cleanliness of the filter periodically. Replace or
clean the filterif andwhen theair filteris not clean,as itcauses pressureloss. The filtercan be
washed by soaking into water or neutral detergents. (Wash it gently, do not rub or do not
squeezeit.)Lay thecleanersideuptodry. Itcanbecleanedforafewtimeswiththismethod.

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11. Troubleshooting
Thefollowing table isfortroubleshootingduring testrunandoperation.
Trouble
Cause
Whattodo
Blownfuseor
Trippedcircuit
breaker
Abnormalvoltageor frequency
Consultwithpowercompany.
Inappropriatecapacity ofpower
sourceequipment
Replacewithappropriateone.
Missingphase
Checkwiring.
Imbalancedvoltageofphase
Consultwithpowercompany.
Excessivevoltagedrop
Checkthethicknessandlengthof
wiring.
Excessive current
Reduceairvolumebydamper.
Reversedrotation
Changewiring. (interchanginganytwolineleads)
Fantouch
Repair.
Waterinthecasing
Drainandtakesomepreventive
measure.
Abnormalityofbearing
Replace.
Insufficientair
pressureor
volume
Improperfrequency
Consultwith Muto.
Too highambientairtemp.
Improveairventilationoftheroom.
Leakageorcloggedpiping
Checkpiping.
Missingphase
Checkwiring.
Loosebelt, damagedbelt
Adjustbelt tension,replacebelt.
Damaged fan,etc.
Repair.
Reversedrotation
Changewiring. (interchanginganytwolineleads)
Dirtyorcloggingairfilter
Cleanorreplace.
Loweredmotorspeed
Consultwith Muto.
Foreignmaterialon thefan
Cleanup.
Abnormalnoise
and/orvibration
Touchingorbrokenfanordeflector
Repair.
Reversedrotation
Changewiring. (interchanginganytwolineleads)
Loosebelt,damagedbelt
Adjustbelt tension,replacebelt.
Foreignmaterialin the pulleygroove
Getridof foreignmaterial.
Badpulleyalignment
Adjust the alignment.
Imbalanceof fan
Fancleaning. Ifvibrationstillremains,
repairit.
Badbearing
Replace.
Foreignmaterialorwater
Cleanupandprotect.
Imbalancedvoltagebetweenphase
Consultwithpowercompany.
Missingphase
Checkwiring.
Airleakage
Checkpipingandrepair.
Weightof pipingor forceinducedby
thermalexpansion
Getridofanyforce to theblower.

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12. Instruction for belt tensionAdjusting and/or belt Replacing
Turn thepoweroffbeforeadjustingbelttensionorreplacingbelt.
Followingisinstructivetoadjustbelttensionand/ortoreplacebelt.
(1) Removethebeltcover.
(2) Loosentheholdingbolts forthe motor.
(3) (When replacing) Bring the motor closer to the blower by the adjusting bolt of the motor-base,
andremove the oldbelt.
(4) (When replacing) Install the new belt. If multiple belts are used, it is recommended to use
“matched set” of which the circumference length is the same.
(5) Adjust the parallelism and offset by putting a ruler on motor pulley and blower pulley, at the
same time, adjust deflection as you give tension at the center of thespan to the belt. (Fig.1,2
andTable1)
(6) Tightentheholdingbolts to fix themotor.
(7) Putbackthebeltcover.
Fig.1: ParallelismandOffset Fig.2:Tension
Table 1:Belttension
Motor [kW]
δ[mm]
P[N]
5.5
6.0
18
7.5

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13. Instruction for Disassembly and Reassembly
Turn thepoweroffbefore disassembly and reassembly.
Following is instructive to disassemble and/or to reassemble the blower, referring to “14.Structural
drawing”. (It is very difficult to explain all of details of the work perfectly in writing and by sketches.
Therefore it is recommended to understand how the parts put together before disassembling and
record the directionandorderofthepartswhiledisassembling.)
13-1. Disassembly
(1) Remove the belt cover and belt㊳. (See “12. Instruction for belt tension Adjusting and/or belt
Replacing”)
(2) Removepulleystoppernut ㊲and pulleystopperwasher ㊸,andremoveblowerpulley ㉟.
(3) Removestay ㊷.
Note：Stay ㊷and bearing retaining cap ㉖are fixed together. Therefore, after removing
thestay, boltthecapagain.
(4) Removethebareblowerfrom thebase.Standthebloweronastandwiththeinletsideup.(Be
carefulnot to tipovertheblowerduringthework.)
(5) Removebearingcover ⑱andpacking ⑰.
(6) Remove bearingnut ⑯and bearing washer ⑮.
(7) Removethescrewholdingbearingbox(inletside)⑫.Pulloutbearing ⑭
andbearingbox(inletside) ⑫together.(Fig.3)
(8) Pull off bearing ⑭from bearing box (inlet side) ⑫. (Tapping the bearing
withahammer-handle frombacksidewillhelpforeasyremoval.)
(9) Afterloosen fan case fasteningnuts ㊵, remove fancasefastening bolts ㊴.
Removefancase(C) ⑤andfoots ㊶.
(10) Remove fanstoppernut ⑪andfanstopperwasher ⑩.
(11) Remove fan ⑥, fan case (B2) ③, deflector ⑦, collar ⑲, fan ⑥, fan case (B3) ④&
fancase(B) ②,deflector ⑦, collar ⑲, and fan ⑥throughthelastfaninthisorder.
Caution：Record thelocationoffanlinerwhichmightbeleftforfanlocationadjustment.
The catch portion of the fan case is filled with sealant, resulting difficult to
disassemble the fan case. Be careful not to break the components. It is
recommendednot toseparate fan case (B3) ④&fancase (B) ②.
(12) Remove fankey ⑨.
(13) Remove bearingbox(outletside) ㉕fromfancase(A) ①.Atthistime,
shaft ⑧shouldcomeofftogetherwithbearingbox(outletside) ㉕.
(14) Removebearing retainingcap ㉖.
(15) Laya wood-block on the floor and stand shaft ⑧on top of the block in
anuprightposition.(Fig.4)
(16) Remove bearing box (outlet side) ㉕from bearing ㉘by tapping
outsideuniformlywithplastichammer.
(17) Removebearingnut ㉚and bearingwasher ㉙.
(18) Removebearing ㉘from shaft ⑧,usingapuller.
Fig.4
Fig.3

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13-2. Cleaning
Clean the disassembled parts. (For the parts in the bearing portion, clean thoroughly with washing
solvents.)Visuallyinspect the parts.
13-3. Reassembly
Reassemblyisbasically thereversedorderofdisassembly.
(1) Pressbearing ㉘onto shaft ⑧untilseatedagainsttheshoulder.(Fig.5)
(2) Installbearingwasher ㉙and bearingnut ㉚.
(3) Pressbearing ㉘into bearingbox(outletside) ㉕.
(4) Installbearingretainingcap ㉖temporally.
Note: The capand stay ㊷aretightened togetherin(13).
(5) Installbearingbox (outletside) ㉕ontofancase(A) ①.
(6) Install fankey ⑨.
(7) Assemble fan ⑥, collar ⑲, deflector ⑦,fan case (B3) ④& fan case (B) ②,
fan ⑥, collar ⑲, deflector ⑦, fancase (B2) ③,andfan ⑥through thelastfan
inthisorder.
Note:puton sealantbetweenfancasesasnecessary.
Sealant:Siliconsealant5211(byThreebond)orequivalent.
(8) Install fanstoppernut ⑪andfanstopperwasher ⑩.
(9) Install fancase(C) ⑤and foot ㊶,tighteninglightly fancase fasteningbolts ㊴.
(10) Install bearingbox (inletside) ⑫onto fancase(C) ⑤.
(11) Press bearing ⑭onto shaft ⑧and into bearing box (inlet side) ⑫
untilseated againsttheshoulder.(Fig.6)
(12) Installbearingwasher ⑮and bearingnut ⑯.
(13) Installbearingcover ⑱andpacking ⑰.
(14) Put back the blower on the base. While adjusting stay ㊷and fan case
(C) ⑤in order to eliminate gaps, install bearing retaining cap ㉖and
thestaytogether.Tightenfirmlyfancasefasteningbolts ㊴.
(15) Adjustingfoot ㊶inordertoeliminategaps, tightenfirmlyfancase fasteningnuts ㊵.
(16) Installblowerpulley ㉟,heatingup100to150deg.C.
(17) Installpulleystopperwasher ㊸andpulleystoppernut ㊲.
Fig.5
Fig.6