ARIETE 9020 - Page 23

• Applianceshallbeinstalled,operatedandstoredinaroomwith
afloorarealargerthan10m2•
• Stagnation of possible leaks of refrigerant gas in unventilated
roomscouldleadtofireoranexplosionhazardshouldthere-
frigerant come in contact with electric heaters, stoves or other
sources of ignition.
• Use care when storing the appliance to prevent mechanical
faults.
• Onlypersonsauthorizedbyanaccreditedagencycertifyingtheir
competence to handle refrigerants in compliance with sector leg-
islationshouldworkonrefrigerantcircuits.
• Maintenanceandrepairsrequiringtheassistanceofotherquali-
fiedpersonnelmustbecarriedoutunderthesupervisionofspe-
cialistsintheuseofinflammablerefrigerants.
INSTRUCTION FOR REPAIRING APPLIANCES CONTAINING R 290
1. Checks to the area
Priortobeginningworkonsystemscontainingammablerefrigerants,safetychecksare
necessarytoensurethattheriskofignitionisminimised.Forrepairtotherefrigerating
system,thefollowingprecautionsshallbecompliedwithpriortoconductingworkonthe
system.
Workprocedure
Workshallbeundertakenunderacontrolledproceduresoastominimisetheriskofa
ammablegasorvapourbeingpresentwhiletheworkisbeingperformed.
2. General work area
AIImaintenancesta󰀨andothersworkinginthelocalareashallbeinstructedonthenature
ofworkbeingcarriedout.Workinconnedspacesshallbeavoided.Theareaaroundthe
workspaceshallbesectionedo󰀨.Ensurethattheconditionswithintheareahavebeen
madesafebycontrolofammablematerial.
3. Checking for presence of refrigerant
Theareashallbecheckedwithanappropriaterefrigerantdetectorpriortoand during
work,toensurethetechnicianisawareofpotentiallyammableatmospheres.Ensurethat
theleakdetectionequipmentbeingusedissuitableforusewithammablerefrigerants,
i.e.nonsparking,adequatelysealedorintrinsicallysafe.
4. Presenceofreextinguisher
Ifanyhotworkistobeconductedontherefrigerationequipmentoranyassociatedparts,
appropriatereextinguishingequipmentshallbeavailabletohand.Haveadrypowderor
CO2reextinguisheradjacenttothechargingarea.
5. No ignition sources
Nopersoncarryingoutworkinrelationtoarefrigerationsystemwhichinvolvesexposing
anypipeworkthatcontainsorhascontainedammablerefrigerantshalluseanysources
ofignitioninsuchamannerthatitmayleadtotheriskofreorexplosion.AIIpossible
ignitionsources,includingcigarettesmoking,shouldbekeptsu󰀩cientlyfarawayfromthe
siteofinstallation,repairing,removinganddisposal,duringwhichammablerefrigerant
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