Sime Aqua Serie Instrucciones Para El Instalador página 81

of. the. combustion. head. of. even-
tual.deposits.
–. Upon. completion. re-assemble.
the. unit. in. the. opposite. way. as.
described. above. taking. care. to.
respect. the. indicated. measure-
ments.
4.7.3 Substitution of nozzle
The. nozzle. should. be. substituted.
at. the. beginning. of. every. heating.
system. for. guaranteeing. the. cor-
rect. fuel. flow. and. a. good. spray.
efficiency..
The.nozzle.is.substituted.in.the.fol-
lowing.manner:
–. Disconnect.the.high.tension.cables.
from.the.electrodes.
–. Loosen. the. fixture. screw. (A. fig..
16). of. the. electrodes. support. and.
remove.it.
–. Block.the.spray.door.using.a.n°19.
spanner. and. unscrew. the. nozzle.
with.a.n°16.spanner.(fig..17).
4.8 FAULT FINDING.
There.follow.a.list.of.some.reasons.
and. the. possible. remedies. for. a.
series.of.faults.which.could.happen.
causing. a. failure. or. an. irregular.
function. of. the. appliance.. A. func-
tion. fault,. in. most. cases,. causes.
the. "lock. out". signal. on. the. control.
panel. to. turn. on.. When. this. light.
turns. on,. the. burner. can. only. func-
tion.again.after.the.reset.button.has.
been. pressed;. once. this. has. been.
done. and. a. regular. ignition. occurs,.
the. failure. can. be. defined. momen-
tary.and.not.dangerous..
On.the.contrary,.if.the."lock.out".per-
sists,.then.the.cause.of.the.fault.as.
well. as. the. remedy. must. be. looked.
for.in.the.following.faults:
The burner does not ignite
–. Check.the.electric.connections.
–. Check. the. regular. fuel. flow,. the.
cleanness. of. the. filters,. of. the.
nozzle.and.air.vent.from.the.tube.
–. Check. the. regular. spark. ignition.
and. the. proper. function. of. the.
burner.
The burner ignites regularly but
the flame goes out immediately
–. Check.the.flame.detection,.the.air.
calibration.and.the.function.of.the.
appliance..
Difficulty in regulating the burner
and/or lack of yield
–. Check:.the.regular.flow.of.fuel,.the.
cleanness. of. the. boiler,. the. non.
obstruction.of.the.smoke.duct,.the.
real. input. supplied. by. the. burner.
and.its.cleanness.(dust)..
The boiler gets dirty easily
Fig..17
–. Check. the. burner. regulator.
(smoke. analysis),. the. fuel. quan-
tity,. the. flue. obstruction. and. the.
cleanness. of. the. air. duct. of. the.
burner.(dust).
The boiler does not heat up
–. Control.the.cleanness.of.the.shell,.
the.matching,.the.adjustment,.the.
burner. performances,. the. pre-
adjusted.temperature,.the.correct.
function.and.position.of.the.regu-
lation.stat.
–. Make.sure.that.the.boiler.is.suffi-
ciently.powerful.for.the.appliance.
Smell of unburnt products
–. Control.the.cleanness.of.the.boiler.
shell. and. the. flue,. the. airtight-
ness. of. the. boiler. and. of. the. flue.
ducts.(door,.combustion.chamber,.
smoke.ducts,.flue,.washers).
–. Control.the.quality.of.the.fuel.
A
2 - 2,5 mm
Frequent intervention of the boiler
shutoff valve
–. Control.the.presence.of.air.in.the.
system,. the. function. of. the. circu-
lation.pumps.
–. Check. the. load. pressure. of. the.
appliance,. the. efficiency. of. the.
expansion. tanks. and. the. valve.
calibration.
Fig..16
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