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H5-991-406A
H/G-25-SD Installation
Important Precautions
Adequate Fluid Supply.
. To. avoid. cavitation. and.
premature.pump.failure,.be.sure.that.the.pump.will.have.
an.adequate.fluid.supply.and.that.the.inlet.line.will.not.be.
obstructed...See.“Inlet.Piping”.
Positive Displacement.
.This.is.a.positive-displacement.
pump..To.avoid.severe.system.damage.if.the.discharge.line.
ever.becomes.blocked,.install.a.relief.valve.downstream.
from.the.pump..See.“Discharge.Piping”.
Safety Guards.
. Install. adequate. safety. guards. over.
all. pulleys,. belts,. and. couplings.. Follow. all. codes. and.
regulations. regarding. installation. and. operation. of. the.
pumping.system.
Shut-Off Valves.
.Never.install.shut-off.valves.between.
the. pump. and. discharge. pressure. regulator,. or. in. the.
regulator.bypass.line.
Freezing Conditions.
.Protect.the.pump.from.freezing..
See.also.the.Maintenance.Section.
Consult.the.Factory.for.the.following.situations:
•.. Extreme.temperature.applications.–.above.10°.F.(49°.
C).or.below.40°.F.(5°.C)
•.. Pressure.feeding.of.pumps
•.. Viscous.or.abrasive.fluid.applications
•.. Chemical.compatibility.problems
•.. Hot.ambient.temperatures.–.above.110°.F.(43°.C)
•.. Conditions.where.pump.oil.may.exceed.180°.F.(8°.C).
because.of.a.combination.of.hot.ambient.temperatures,.
hot.fluid.temperature,.and.full.horsepower.load.—.an.
oil.cooler.may.be.required.
Location
Locate.the.pump.as.close.to.the.supply.source.as.possible.
Install.it.in.a.lighted.clean.space.where.it.will.be.easy.to.inspect.
and.maintain..Allow.room.for.checking.the.oil.level,.changing.
the.oil,.and.removing.the.manifold.support.(43),.manifold.(7),.
and.valve.plate.(18).
Mounting
The.pump.shaft.can.be.rotated.in.either.direction.
To.prevent.vibration,.securely.attach.the.pump.and.motor.to.a.
level,.rigid.base.
On. a. belt-drive. system,. align. the. sheaves. accurately:. poor.
alignment.wastes.horsepower.and.shortens.the.belt.and.bearing.
life..Make.sure.the.belts.are.properly.tightened,.as.specified.by.
the.belt.manufacturer.
On.a.direct-drive.system,.align.the.shafts.accurately..Unless.
otherwise.specified.by.the.coupling.manufacturer,.maximum.
parallel. misalignment. should. not. exceed. 0.015. in.. (0.4. mm).
and. angular. misalignment. should. be. held. to. 1°. maximum...
Careful.alignment.extends.life.of.the.coupling,.pump,.shafts,.
and.support.bearings...Consult.coupling.manufacturer.for.exact.
alignment.tolerances.
W0198