GEA Bock HG66e Series - 2 Safety Instructions for Use of Flammable Refrigerants; Safety Instructions; Qualifications Required Of Personnel

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2 | Safety instructions for use of
flammable refrigerants
DANGER • Explosion and fire risk! Hydrocarbons and synthetic HFO
refrigerants are colourless, combustible gases which
occur naturally and which are explosive in a certain blend!
• Hydrocarbons are classied into the safety group A3 (highly-
inammablerefrigerant)accordingtoEN378.
•HFOrefrigerantsareclassiedintothesafetygroupA2L(hardly-
inammablerefrigerant)accordingtoEN378.
Astheyareheavierthanair,theoperatinglocationmustbeabove
groundleveltoallowunrestricteddischargeofthegas.
• By means of a risk andhazardanalysis, appropriate technical
measuresaretobeidentifiedinordertoachievesufficientrisk
reduction.Ifnecessary,a classificationof the hazardousareas
accordingtoEN60079-10-1shouldbecarriedout.Iftherefriger-
antconcentrationexceedsthevalueof25%ofthelowerflamma-
bilitylimit(LEL),allequipmentinthehazardousareawhichisnot
permittedforoperationinhazardousareasmustbeimmediately
switchedoffwithoutanyvoltage.
•Useonlysuitableequipmentapprovedforflammablerefrigerants.
•Observethenationalregulations.
INFO
Semi-hermeticcompressorsaretobeclassifiedas"technically
tight"(seee.g.TRBS2152part2/TRGS722).
2.1 Safety instructions
2.2 Qualicationsrequiredofpersonnel
WARNING Inadequatelyqualiedpersonnelposestheriskofaccidents,the
consequencebeing seriousorfatalinjury.Workoncompressors
isthereforereservedforpersonnelwhichisqualiedinhandling
ammablerefrigerants.