Cleaning And Maintenance - Sime AQUA HE 25 ErP BE Instrucciones Para El Instalador

steps.shown.in.fig..13.
4.5 DISASSEMBLY
OF EXPANSION VESSEL
.
The. heating. expansion. tank. is. disas-
sembled.in.the.following.manner:
–..Make.sure.that.the.boiler.has.been.
emptied.of.water.
–..Unscrew. the. union. which. connects.
the.expansion.tank.
–..Remove.the.expansion.tank.
Before.filling.up.the.system.make.sure.
that.the.expansion.tank.is.reloaded.at.
the.pressure.of.0.8.÷.1.bar.
4.6 BURNER MAINTENANCE
(fig. 14)
To. dismantle. the. burner. from. the.
boiler.door,.remove.the.screw.(fig..14).
To. access. the. internal. part. of. the.
burner,. remove. the. air. lock. unit. held.
in.place.by.two.screws.to.the.sides.and.
remove.the.right.hand.shell,.which.is.
held. in. place. by. four. screws,. taking.
care. not. to. damage. the. O-ring. seal..
OR.
4.7 CLEANING
AND MAINTENANCE
Preventive. maintenance. and. check-
ing. of. the. efficient. operation. of. the.
equipment.and.safety.devices.must.be.
carried.out.at.the.end.of.each.heating.
season. exclusively. by. the. authorised.
technical.staff.
4.7.1 Cleaning smoke
ducts (fig. 15)
Use.an.adequate.swab.for.cleaning.the.
smoke.ducts.of.the.boiler..
After.cleaning,.position.the.circulators.
in.their.original.position.(fig..15).
4.7.2 Cleaning combustion head
(fig. 16)
The.combustion.head.is.cleaned.in.the.
following.manner.(fig..16):
–. Disconnect. the. high. tension. cables.
from.the.electrodes.
–. Unscrew. the. fixture. screws. of. the.
circulator.support.and.remove.it.
–. Brush.the.propeller.delicately.(tur-
bulence.disc).
–. Carefully. clean. the. photo-resist-
SCREW
VITE
ance. of. eventual. deposits. of. dirt.
deposited.on.its.surface.
–. Clean. the. remaining. components.
of.the.combustion.head.of.eventual.
deposits.
–. Upon. completion. re-assemble. the.
unit.in.the.opposite.way.as.described.
above. taking. care. to. respect. the.
indicated.measurements.
RONDO' 3/4 OF
ESTELLE 3/4 OF
RONDO' 5/6 OF
ESTELLE 5/6 OF
4.7.3 Substitution of nozzle
The. nozzle. should. be. substituted. at.
the.beginning.of.every.heating.system.
for.guaranteeing.the.correct.fuel.flow.
and.a.good.spray.efficiency..
The.nozzle.is.substituted.in.the.follow-
ing.manner:
–. Disconnect. the. high. tension. cables.
Fig..14
Fig..15
83