Owner manual

17
09704-09.2013-DGbFITrCn
D
GB
F
I
TR
CN
5| Commissioning
Aschangingtheshaftsealinvolvesopeningtherefrigerant
circuit, this is recommended only if the seal is losing
refrigerant.Replacingtheshaftsealisdescribedinthespare
partkitconcerned.
Emptyingtheoilreservoir:Theoilreservoircanbeemptied
very simple without having to dismantle the clutch and/or
beltdrive.Itisrecommendedthatthisisdoneatthesame
timeastheair-conditioningmaintenanceandmotorservice.
Toproceed,detachtheoilhosefromthebracket,removethe
sealingpluganddrainthe oilintoacollectingvessel.After
emptying,resealtheoilhoseandclampitintothebracket.
Dispose of the used oil in accordance with national
regulations.
Thecompressorshaftissealedtooutsideusingashaftseal.Thesealingelementrotateswiththe
shaft.
Thefollowingisespeciallyimportanttoensuringfault-freeoperation:
 Thecompleterefrigerantcircuitmustbecorrectlyexecutedandcleaninside.
 Heavyshocksandvibrationstotheshaftaswellascontinuouscyclicoperationaretobe
 avoided.
 Thesealingsurfacescansticktogetherduringprolongeddowntimes(e.g.winter).Therefore,run
 thesystemevery4weeksfor10minutes.
5.8 Shaft seal, emptying the oil reservoir
5.9 Avoidingliquidshocks
ATTENTION! Slugging can damage the compressor and cause refrigerant
to leak.
Topreventliquidshocks:
 Thecompleterefrigerationplantmustbecorrectlydesignedandexecuted.
 Thecapacitiesofallcomponentsmustbecompatible(particularlyevaporatorandexpansion
 valve).
 Suctiongassuperheatingattheevaporatoroutputshouldbeatleast7–10K(checksetting
 oftheexpansionvalve).
 Thesystemmustreachastateofequilibrium.
 Particularlyincriticalsystems(e.g.severalevaporatorpoints),suitablemeasures,e.g.
 useofliquidtraps,solenoidvalveintheliquidline,etc.arerecommended.
Fig.18