Muto Denki SF Series User manual

Sep. 2017
Muto Fan
SF Series TF Series
Instruction Manual
Muto Denki Corporation
Headquarters: 751,NishiHassaku-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,Aza Harayama,Tamagawa,ChinoCity,Nagano, Japan391-0011
TEL:[phone], FAX:[phone]
web: http://www.mutodenki.co.jp e-mail: [e-mail]
Read thismanualcarefully beforeusingtheproduct.
Wrongoperationsdeviating fromthis manual may lead toserious accidents ordamages.
Keepthismanualconvenientlocationforeasyaccess.
TMB-052E

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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·················································································· 6
8. Connection to Power and Test run ············································ 6
9. Precautions for Operation ······················································· 6
10.Maintenance ········································································ 7
11.Troubleshooting ···································································· 8
12.Instruction for belt tensionAdjusting and/or belt Replacing············· 9
13.Instruction for Disassembly and Reassembly······························ 10
14.Structural drawing·································································· 11
15.Motor·················································································· 12
16.Inquiry················································································· 12
17.Limited Warranty··································································· 12

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1. Introduction
Thank you forpurchasing theMutoFan.
Thismanual contains theinformation youneed forhandling,installing,operating andmaintaining 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
understandingofallproductinformation, safetyinformationandprecautions.
Inthismanual,safetyprecautionsareclassified as “Warning”and“Caution”.
Thistagindicatesthatwrongoperationorusemayleadtofatal lossor serious
injury.
This tag indicates that wrong operation or use may lead to human injury or
lossofproperty.
Eventheitemsunder mayleadto seriousresultsdependingonthecircumstances.
Those precautions include very important information and it is strongly recommended to follow them
strictly.
(Place toinstall ）
⚫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
firesmayoccur.
(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,explosionsorfires mayoccur.
(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 getclose to or look into theopeninletoroutlet 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:Astrongwindorflown thingsmaycauseinjuries.
⚫Do notinsert finger(s) or hand(s) into the opening ofthesafety covers such as external fancover
and cooling fan cover. Do not remove the safety cover during the product is running. Otherwise
injuriesmayoccur.
⚫Shutoff the mainpowerswitchin case ofpowerfailure.Otherwiseinjuriesmayoccur.
(DisassemblyandReassembly)
⚫Beforedisassemblyandreassembly,make suretoshutoffthemainpower and preventpower to
be turnedon. Otherwiseinjuriesorelectricalshocksmayoccur.
( Others )
⚫Follow thelabels attached totheproduct. Otherwiseserious resultsmayoccur.
(Transportation )
⚫Check the mass 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
injuriesorbreakagesmay occur.
(Installation)
⚫Remove all of the inflammable from the productanditsvicinity.Otherwise firesmayoccur.
⚫Ventilate the room to keep the ambient temperature below 40 deg. C. Otherwise burns, fires or
bearing-damagemay occur.
(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.
⚫If any abnormalities are found, stop the machine immediately. Otherwise injuries, electrical
shocksorburnsmay occur.
⚫OperatetheFan in correctdirection forrotation.Otherwisebreakages may occur.
(DisassemblyandReassembly)
⚫Disassembly and reassembly should be done by experts. Otherwise injuries or breakages may
occur.
⚫Do not use the parts of this product on other equipment. Do not use unauthorized parts for the
product. 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 order sheet,
drawings,invoices,etc.
(1) Check the nameplates on the Fan and the motor, and confirm if it matches what have been
ordered.
(2) Countthenumberoftheproduct,andconfirmifitagreeswithwhat havebeenordered.
(3) Confirmthatthereisno breakageduring transportation.
4. Transportation and Handling
Whentransporting the Fan, lift the casing and themotor together. Be careful not to give shocks to any
parts of the Fan.
5. Storage
IftheFanisstoredbeforeinstallation,becarefulasfollows:
(1) Store the Fan in a room where ventilated, not humid nor dusty. Otherwise the Fan may have
anytroubles.
(2) Beforeoperating the Fan which had been stored for longperiod of time,checkthat thebearing
andtheinsulationof the motor havenoproblem.
(3) While the Fan is stored, rotate the fan shaft several times by hand every month. If this
procedureisnotperformed,the lifeofthebearingmaybecomeshort.
(4) After stored for long period of time, carefully check that the Fan has no abnormality before
operating.
6. Installation
The Fan should be placed on the flat and rigid foundation. If there are gaps between the casing and
foundation,fill thegapswiththinsteelsheets(shimming).
Clearsomespacearound theFan forthe maintenance.
When anchorbolts are used to use vibration isolator pads, do not fasten nuts tightly so that the pads
willbeeffective.(Fig.1)
(Anchorboltandvibrationisolatorpadsare option.)
Fig.1 Anchorbolt

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7. Piping
Use rubber sleeves or flexible joints on the inlet and/or outlet to avoid unnecessary force from the
piping to the Fan and to isolate the vibration from the Fan. If direct connection to piping is inevitable,
do not give the force to the Fan by dimensional tolerances, weight of piping, thermal expansion of
piping,etc.
8. Connection to Powerand Test run
(1) Turn thefan byhandto verify freerotationwithout rubbing ornoise.
(2) Check the belt tension and the pulley alignment referring to “12. Instruction for belt tension
Adjustingand/or beltReplacing”.
(3) Check the nameplates of Fan and motor and confirm if they agree with the specification for
power supply,then connect to powerlineunderinstruction byelectrical engineer as per electric
technical standards andwiring regulation.
(4) Jog the Fan and confirm 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
exchanging 2 wires of 3 wires. If the Fan runs continuously with reverse rotational direction, it
cannotperform as specifiedandmaylead toserious accident.
(5) Run the Fan and measure the electric current (average of each of 3 phases) of the motor. If it
exceeds the rated current, use at below the rated current by adjusting the air volume with
damper 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
takenby referring to “11. Troubleshooting”.
9. Precautions for Operation
Beforeoperating the Fan,understand thefollowingthoroughly.
(1) Continuoususeatsmallairvolumewillleadto fan durability problem.
(2) The Fan is designed to handle clean air. It cannot handle for air containing particulates and
dust, corrosive gases nor inflammable gases. Temperatures of air which standard model can
handleareinthe rangeof -15 to 50deg.C.
(3) Because the belt has initial elongation, the belt tension may decrease. The belt tension should
be checked and adjusted before operating theFan. The initial elongation practically stopsafter
a few days beginning to use the Fan.During thattime, the belt tension shouldbechecked and
adjusted everyday.
Itisnoproblemthatpowderofthebeltcomesoutuntil thebelt fitinwith thepulley.
Pay attentiontofollowingprecautionincaseofthatheatresistantmodeloperate.
(4) Donotwrap the cooling fancoverina heatinsulationmaterial.
Otherwise the life of the motor bearing may be shortened because the heat insulator material
prevents heatloss.
(5) After starting the Fan, temperature ofthe gas should be raised slowly. Otherwise the Fan may
be strainedbyheatexpansion.
(6) Whenstopping theFan,keeprunningituntil the temperatureoftheFan becomesnearly room

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temperature. If the Fan stops suddenly, the pillow block unit may be broken because the heat
is transmittedto it.
10. Maintenance
The following maintenanceis recommendedtokeeptheFanin goodcondition.
(1) Pay attentionto ventilation tokeeptheambienttemperature intherangeof-15 to40 deg. C.
(2) Pay attention to abnormal noise, abnormal vibration, abnormal temperature and air leakage. If
abnormalityis found,takeactionsreferringto “11.Troubleshooting”.
(3) Periodically stop the Fan, and check the tension and condition of the belt. If the tension is too
loworthebeltisdamaged,adjustthetensionorreplacebelt referringto “12. Instruction forbelt
tensionAdjustingand/orbeltReplacing”.
(4) Lubrication
Note:Formotor, refertothenameplateorthemanualofthe motor.
(a) Grease type,LubricationamountandLubricationinterval
Referto thenameplateontheFan.
(b) Lubricationprocedure
Lubrication can be done during the Fan is running, but be careful for rotating object. Turn
the shaft by hand when lubricating during the Fan is stopped. Inject the grease using a
greasegun.
(5) If the Fan has filter at the inlet,check the cleanliness of the filter periodically. Replace or clean
the filter if and when the air filter is not clean, as it causes pressure loss. The filter can be
washed by soaking into water or neutral detergents. (Wash it gently, do not rub or do not
squeezeit.)Laythecleaner sideup todry.Itcanbecleanedforafew timeswiththismethod.

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11. Troubleshooting
The following tableisfor troubleshootingduring testrunand operation.
Trouble
Cause
What todo
Blownfuseor
Tripped circuit
breaker
Abnormalvoltage or frequency
Consultwithpowercompany.
Inappropriatecapacityofpower
sourceequipment
Replacewith appropriateone.
Missingphase
Checkwiring.
Imbalancedvoltageofphase
Consultwithpowercompany.
Excessivevoltagedrop
Checkthethicknessand lengthof
wiring.
Excessive current
Reduce airvolumebydamper.
Reversedrotation
Changewiring.(exchanging 2wiresof
3wires)
Fan touch
Repair.
Waterinthecasing
Drainand takesomepreventive
measure.
Abnormalityofbearing
Repair.
Insufficientair
pressureor
volume
Improperfrequency
ConsultwithMuto.
Toohighambientairtemp.
Improve airventilationofthe room.
Leakageorcloggedpiping
Checkpiping.
Missingphase
Checkwiring.
Damagedfan,etc.
Repair.
Reversedrotation
Changewiring.(exchanging2wiresof
3wires)
Dirtyorcloggingairfilter
Cleanorreplace.
Loweredmotorspeed
ConsultwithMuto.
Foreign materialonthefan
Cleanup.
Abnormalnoise
and/orvibration
Touchingorbrokenfan
Repair.
Reversedrotation
Changewiring.(exchanging2wiresof
3wires)
Imbalanceoffan
Fan cleaning. Ifvibration stillremains,
repairit.
Bad bearing
Repair.
Foreign objectorwater
Cleanup and protect.
Imbalancedvoltagebetween phase
Consultwithpowercompany.
Missingphase
Checkwiring.
Airleakage
Checkpipingand repair.
Weightofpiping orforceinducedby
thermalexpansion
Getridofany force to the Fan.

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12. Instructions for belt tensionAdjusting and/or belt Replacing
Turn thepoweroff beforeadjustingbelt tensionorreplacingbelt.
Following is instructive to adjust belt tension and/or to replace belt as referring to “14. Structural
drawing”.
(1) Remove beltcover ⑱.
(2) Lowermotor ②as looseningnutsofmotoradjuster ⑧,remove theoldbelt ④.
(3) Install the new belt ④. If multiple belts are used, it is recommended to use “matched set” of
whichthe circumference lengthisthe same.
(4) Adjust the parallelism and offset with motor adjuster ⑧as putting a ruler on motor pulley ③
and fan pulley ⑤, at the same time, adjust deflection as you give tension at the center of the
spantothebelt.(Fig.2and3)
Note: The deflection and the tension are shown on the nameplate (BELT SPEC.) on the
Fan.
(5) Putbackbeltcover ⑱.
Fig.2 ParallelismandOffset
Fig.3 Tension
Parallelism
Offset
Parallelism
Offset
Deflection
Span
Ruler
Ruler

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13. Instructions for Disassembly and Reassembly
Turn the power off before disassembly and reassembly.
Following is instructive to disassemble and/or to reassemble the Fan as referring to “14. Structural
drawing”. (It is very difficult to explain all of details of the work thoroughly in writing and by sketches.
Therefore it is recommended to understand and record that the parts put together or direction while
disassembled.)
13-1. Disassembly
(1) Remove belt cover ⑱, and remove belt ④. (See “12. Instruction for belt tension Adjusting
and/orbeltReplacing”)
(2) Remove fanpulley ⑤.
(3) Removeend head ⑬.
(4) Remove fanstopbolt ⑮andfanstopcollar ⑭.
(5) Pullfan ⑪outofshaft ⑨.
(6) Remove packing ⑩.
(7) Remove pillowblockunit (loadside) ⑦,pillowblockunit(opp.loadside) ⑥and shaft ⑨.
Caution：Iftherearelinersunderthepillowblockunit,don’t lose the liners.
(8) Loosen the set screw of pillow block unit (load side) ⑦and pillow block unit (opp. load side)
⑥,removeshaft ⑨.
13-2. Cleaning
Cleanthe disassembledparts.
13-3. Reassembly
Reassemblyisbasically thereversedorderofdisassembly.
(1) Insert shaft ⑨topillow block unit(loadside) ⑦andpillowblock unit(opp.load side) ⑥,and
tighteneachsetscrews.
(2) Place shaft ⑨and thetwounits ⑦⑥ oncasing ⑯.
Caution：Iftherewere linerswereunderthe pillowblock unit,return thelinersasbefore.
(3) Confirmshaft ⑨is thecenterofcasing ⑯,fix the twounits ⑦⑥.
(4) Installpacking ⑩tocasing ⑯.
(5) Insert fan ⑪inshaft ⑨.
(6) Tighten fanstopbolt ⑮tofixfan stopcollar ⑭.And fan ⑪is fixedto shaft ⑨.
(7) Whenturningshaft ⑨byhand, verify freerotationwithoutrubbingornoise.
(8) Installfanpulley ⑤.
(9) Install beltcover ⑱,and removebelt ④. (See “12. Instruction for belt tension Adjusting
and/orbelt Replacing”)

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14. Structural drawing
No.
Description
Qty.
1
Motorplate
1
2
Motor
1
3
Motorpulley
1
4
Belt
1～
5
Fan pulley
1
6
Pillowblockunit (opp.loadside)
1
7
Pillowblockunit(loadside)
1
8
Motoradjuster
4
9
Shaft
1
10
Packing
1
11
Fan
1
12
Fan hub (unitedwithfan)
1
13
End head
1
14
Fan stopcollar
1
15
Fan stopbolt
1
16
Casing
1
17
Shaft cover
1
18
Beltcover
1

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15. Motor
Regardingmotor, refertotheinstructionmanual of the motor.
16. Inquiry
If you need to contact us regarding this product, please kindly inform us the information on the
nameplate such as CAT. No. , PROD. No. , DATE. In case of troubles, inform us the broken portion,
running time(days)andcondition used andothers additionally.
17. Limited Warranty
The warranty period of this product is one year from the day of shipment unless otherwise specially
agreed. Within the period, the malfunctions induced by defects of material or technical reasons will be
repaired freeofcharge.Butunder followingsituation,thiswarrantywill notapply toanyproducts.
(1) Malfunctions thatoccurpastthewarrantyperiod
(2) Malfunctions thatoccurduetoinappropriateusage
(3) Malfunctions or breakage due to inevitable event such as fire, severe weather, earthquake or
such
(4) Byexceptus,theproducthasbeen repairedormodified.
We shallnotberesponsibleforanyincidentalorconsequentialdamages.
ThiswarrantyisvalidonlyfortheproductusedwithinJapan.

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