Twin City Fans With CE Mark - ES-2-06 - Manual (Page 2)

2. Twin.City.Fan.Engineering.Supplement.2-06
Handling
Handling. of. all. air. moving. equipment. should. be. con-
ducted.by.trained.personnel.and.be.consistent.with.safe.
handling. practices.. Verify. the. lift. capacity. and. operat-
ing. condition. of. handling. equipment.. Maintain. handling.
equipment.to.avoid.serious.personal.injury.
. On. most. units,. lifting. lugs. are. fashioned. to. protect.
the. fan. and. fan. housing. from. damage.. Secure. lifting.
equipment.to.all.provided.lifting.lugs.to.avoid.instability.
while. moving. the. equipment.. Units. shipped. completely.
assembled.may.be.lifted.with.slings.and.spreader.bars..
(Use.well-padded.chains,.cables.or.nylon.straps.).Never.
lift. a. fan. by. the. inlet. or. discharge. flange,. shafting. or.
drives,.wheel.or.impeller,.motor.or.motor.base,.or.in.any.
other.manner.that.may.bend.or.distort.parts..Never.lift.
with.slings.or.timbers.passed.through.the.fan.inlets.
Partial.or.disassembled.units.require.special.handling..All.
parts.should.be.handled.in.a.fashion.which.protects.the.
coatings.and.parts.from.damage..Components.should.be.
handled.such.that.forces.are.not.concentrated.to.avoid.
bending.or.distortion.
. The.housing.should.be.lifted.using.straps.and.spread-
ers..Do.not.distort.housing.or.side.plates.when.lifting.
. Bearing. pedestals. should. be. lifted. using. straps. or.
padded. chains.. Under. no. circumstance. should. an.
attached.or.separated.bearing.pedestal.be.lifted.by.the.
shaft,.bearings,.drives,.motor.or.wheel.
. The. shaft. and. wheel. assembly. may. be. lifted. using.
a. hoist. and. a. spreader. with. a. sling. around. the. shaft.
at. points. nearest. the. wheel.. Use. the. spreader. bar. to.
ensure.that.the.slings.do.not.push.against.the.sides.of.
the.wheel.as.this.may.distort.the.wheel..Take.care.not.
to. scratch. the. shaft. where. the. wheel. or. bearings. will.
be.mounted..Never.lift.or.support.the.assembly.by.the.
wheel..Always.support.the.assembly.by.the.shaft.when.
lifting.or.storing..Do.not.support.the.shaft.or.the.wheel.
on.the.housing.sides.
. Wheels.shipped.separately.can.be.lifted.by.slings.run-
ning.between.the.blades.or.around.the.hub..Never.lift.
the.wheel.by.blades.or.flanges..Always.transport.wheels.
by. lifting.. Do. not. roll. the. wheel. as. this. can. damage.
coatings.and.change.the.balance.of.the.wheel.
. Bent. shafting. is. a. source. of. vibration. and. bearing.
failure,.so.handle.the.shaft.with.care..Any.scratches.on.
the. shaft. may. be. removed. with. fine. emery. cloth. or. a.
stone.
. For.roof.ventilators,.also.see.instructions.specific.to.
handling.roof.ventilators.in.Appendix.A.
. Pins. to. hold. insulation. to. the. housing. are. supplied.
for. some. high. temperature. fan. designs.. Use. caution.
when.handling.and.working.around.fans.that.have.these.
insulation.pins.as.the.points.are.sharp.
Unit Storage
If. fan. installation. is. to. be. delayed,. store. the. unit. in.
an.environmentally.stable.and.protected.area..Vibration.
should.not.exceed.0.051.mm.peak.–.peak.displacement.
at. the. storage. site. unless. the. fan. is. properly. isolated.
from.the.vibration..The.unit.should.be.reasonably.pro-
tected. from. any. accidental. impacts.. Cover. the. fan. to.
protect.coatings.and.to.prevent.any.foreign.material.or.
moisture.from.entering.the.inlet.or.discharge..Take.care.
to.protect.the.motor,.drives.and.bearings..The.following.
precautions.should.be.taken.during.extended.storage.to.
ensure.the.equipment.is.not.damaged:
•. Extended. storage. requires. monthly. inspections..
Check.for.corrosion.or.damage.to.the.unit.and.for.
debris.within.the.fan..
•. Bearings. tend. to. take. on. moisture. if. the. atmo-
sphere. they. are. stored. in. is. not. at. a. constant.
temperature..To.avoid.corrosion,.it.is.necessary.to.
keep.the.bearings.full.of.grease.and.to.rotate.them.
periodically..Even.when.full.of.grease,.bearings.will.
take.on.moisture,.so.it.is.necessary.to.purge.the.
bearings.with.new.grease.to.expel.moisture.every.
thirty.days..It.is.recommended.that.the.bearings.be.
purged. with. grease. while. being. rotated. by. hand..
Do. not. use. high-pressure. greasers. as. they. may.
ruin.the.bearing.seals..
•. The.drives.and.belts.should.be.removed.if.the.fan.
is.to.be.stored.for.a.prolonged.period..The.drives.
should.be.labeled.for.service.and.stored.in.a.dry.
place.. Belts. should. be. removed,. coiled. without.
kinks,. placed. in. a. heavy. carton,. and. stored. in. a.
dry,.well-ventilated.place..To.prevent.belt.deterio-
ration. storage. conditions. should. not. exceed. 85°F.
and.70%.humidity..If.belts.show.signs.of.deteriora-
tion,.they.should.be.replaced.prior.to.startup.
•. Motors.should.be.stored.in.a.clean,.dry,.vibration-
free.location..The.packaging.should.be.opened.up.
enough. to. allow. air. circulation. around. the. motor..
The. winding. temperature. should. be. kept. slightly.
above.that.of.the.surroundings.to.prevent.conden-
sation.. This. can. be. accomplished. by. energizing.
the. internal. heaters,. if. the. motor. is. so. equipped,.
or. by. using. space. heaters.. If. it. is. impossible. to.
heat. the. windings,. the. motor. should. be. wrapped.
tightly.with.a.waterproof.material.that.also.encloses.
several. bags. of. desiccant.. Replace. the. desiccant.
regularly.to.prevent.moisture.problems..The.motor.
rotor.should.also.be.rotated.regularly.(monthly).to.
assure.the.bearing.parts.are.well.greased.
Foundations and Supporting Structures
— Industrial Fans
The.best.means.of.floor.mounting.a.fan.is.on.a.well-
designed,.flat,.level.concrete.foundation..The.foundation.
should. have. a. mass. of. at. least. three. times. that. of.
the.supported.assembly..The.foundation.should.extend.
150mm. beyond. the. outer. dimensions. of. the. fan. and.
driver;. however,. it. should. be. no. more. than. twice. the.
area.required.for.the.equipment..If.it.is.made.larger,.the.
mass.should.be.increased.accordingly.to.resist.rocking.
modes.of.vibration..J.or.T.type.anchor.bolts.using.one.
size.smaller.than.the.nominal.dimension.of.the.base.hole.
shall.be.used..Anchor.bolts.should.be.tied.into.the.rein-
forcing.bar.of.the.foundation.for.the.foundation..A.pipe.
Figure 1. Lifting Lug Locations
Lifting Lugs
Lifting Lugs