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8. ASSEMBLY AND PUTTING ACTUATOR INTO OPERATION
After. unpacking. the. actuator,. inspect. and. check. it. for. possible. visible. damage. during. transportation. or. storage..
If. no. visible. defect. was. detected. connect. the. actuator. to. external. control. and. feeding. circuits.. By. short. starting..
of.the.actuator.in.an.intermediate.position.of.working.stroke,.make.sure.that.the.actuator.output.shaft.rotates.in.correct.
direction..For.the.electronics.DMS2.ED.in.version.CONTROL.and.electronics.DMS2.the.sense.of.rotation.is.electroni-
cally.guarded..
In.case.of.actuators.with.single-phase.electric.motor,.the.sense.of.rotation.of.the.output.shaft.is.changed.by.interchanging.
inlet.phase.conductors.to.the.electric.motor..
In. case. of. actuators. with. three-phase. electric. motor,. interchange. any. two. conductors. of. terminals. U,. V,. W..
of.the.actuator.terminal.board..Then,.repeat.functional.check..After.securing.correct.electric.connection.of.the.actuator,.
fit.it.to.the.valve.and.adjust,.either.manually.or.with.a.connected.computer,.according.to.particular.part.of.these.instruc-
tions..
Important warning!
1). In. carrying-out. adjustment,. repair,. and/or. maintenance,. secure. the. actuator. in. a. prescribed. way. to. prevent. its..
connection.to.supply.mains.and,.thus,.a.possibility.of.injury.by.electric.shock.or.rotating.gear.wheels..
2)..In. reversing. run. of. the. actuators. with. single-phase. electric. motor,. phase. must. not. be. present. on. both. outlets..
of.the.starting.capacitor,.not.even.for.a.moment;.otherwise,.the.capacitor.can.be.discharged.via.contacts.of.torque.
limit.switches.that.can.be.baked.together..
3)..When.the.thermal.protection.built-in.in.the.electric.motor.is.activated.it.should.be.considered.that.the.actuator.can.
start.automatically.after.winding.of.the.electric.motor.has.cooled.down.–.in.case.that.there.is.supply.voltage.present.
on.the.electric.motor.terminals.
After.adjusting.the.actuator,.check.its.function..In.particular,.check.whether.the.actuator.starts.correctly..If.this.is.not.the.
case. switch. off. power. supply. to. the. actuator. immediately. to. prevent. damaging. the. electric. motor. and. find. out..
the.defect..
9. OPERATION AND MAINTENANCE OF ACTUATORS
The.actuators.can.be.controlled.both.remotely.electrically.and.manually.from.their.installation.site..The.manual.control.
is.realized.by.a.hand.wheel.of.the.actuator;.it.requires.no.change-over.switch.and.can.be.used.without.any.danger.to.
the.operator.even.in.case.the.electric.motor.is.running..
Maintenance.of.the.actuators.consists.in.possible.replacement.of.defective.parts.and.adjustment.of.the.electro-
magnetic.brake.of.electric.motors.fitted.with.this.brake..The.brake.should.be.adjusted.after.0.5.x.10
5
.closing.operations..
The.air.gap.between.the.armature.and.the.core.of.the.brake.electromagnet.is.adjusted.to.the.value.0.6.–.0.8.mm...
The.adjustment.is.performed.by.means.of.nuts.on.the.brake.pull.rod..Use.the.nut.closer.to.the.electric.motor.to.adjust.
size.of.the.air.gap;.the.other.nut.is.securing..After.adjustment,.check.correct.function.of.the.brake.and.secure.the.nuts.
with.drops.of.paint..The.grease.filling.is.stable.for.the.actuator.life.time,.i.e..at.least.6.years..If.the.actuator.is.capable.of.
operation.even.after.6.years.old.grease.should.be.removed.from.the.power.part.and.replaced.with.new.one..
Once.in.two.years,.it.is.recommended.to.lightly.smear.the.driving.wheel.gearing.on.the.output.shaft.and.the.gear.
wheel.of.the.position.sensor.in.the.control.box..Use.the.lubricant.CIATIM.201.or.PM.MOGUL.LU.2-3..
Within.6.months.at.the.latest.after.putting.the.actuator.into.operation.and.then.at.least.once.a.year,.connecting.bolts.
between.the.valve.and.the.actuator.should.be.tightened.in.a.cross-wise.manner.
