51
r.4.6.3Electericheatingbattery
Checkthatthebuilt‐insafetythermostatwithanautomaticresetfunctionandtheoverheatthermostat
withmanualresettingarefullyoperational.
r.4.7PlugfansDVE
Dustcanaccumulateonthefanimpellerwhichcancauseimbalanceandvibrations.Thefanimpellermust
thereforebecheckedonceayearandcleaned,ifnecessary.Anti‐vibrationmountsand
flexible
connec
tions
shouldbecheckedatthesametime.Iftheanti‐vibrationmountsare
dama
gedinanywaytheymustbe
replaced.
r.4.7.1Motor
Themotor are
usually
fittedwithfactorylubricatedbearingswhichrequirenofurtherlubrication.
Largermotorscanbefittedwithgreasingnipplesandbearingswhichrequireregularlubrication.
Lubricatingthesetypesofbearingsmustbecarried
out
accordingtothe
manufactur
er
’
s
instruc
tions.
r.4.8SilencerDVD
Duringoperationdustparticlescanaccumulateonthesurfaceofthebaffles.Silencersthataredesignedfor
dryandwetcleaningarefitted
with
bafflesthatcanbeextractedfromtheunitcasing.Largeinspection
doorsgiveaccesstoeasilyextractionofthebaffles.Bafflesdesignedfordrycleaningcanbecleanedusinga
softbrushortheycanbevacuumcleaned.Bafflesdesignedforwet cleaningcanbewasheddown usinga
softbrush
andsoapywater.Thedetergentused
must
benon‐aggressive.Afterwashing,thebafflesmustbe
wiped
drywitha
cloth.
Reme mber tocleantheinsidesurfaceofth eunitcasingbeforerefittingthebaffles.