Nespresso Essenza C91 - Protective Insulation Test Introduction

30
FunctionTests
ServiceManualC91/D91 enVersion1.0
Protectiveinsulationtest(1)
Performtheprotectiveearthconti
nuitytestatfirst,ifitismandatory.
Whatistheprotectiveinsulationtest
about?
Thistestisnecessary
 forclass1and2equipment(with/without
protectiveearth),
 afterarepairwheneverthehousingwas
openedandforexampleageneraldisas
semblywasperformed. 
General
Legalregulation
Incaseofarepair/modificationofthecoffee 
machine,therepaircentreisboundbylawto
protecttheuser/consumerby
 restoringtheregularconditionoftheappli
anceand
 performingtherespectivetestsaccording
toE N/IEC603351“Safetyofhousehold
andsimilare lectricalappliances”and
nationalregulations(e.g.DINVDE0701).
Description
Theinsulationtest
 assuresthatwiringandinsulationofthe
coffeemachinefullfillthenormative
requirementsafterarepair,
 ratestheinsulationcapabilityofthecoffee
machine,
 isaverydangeroustestbecauseofahigh
testvoltage(500VDC).
Fortheinsulationtest,phaseandneutralwire
areshuntedatthepowerplug.Thenatest
voltageisappliedbetweenphase/neutraland
selectedpartsofthecoffeemachine.
Testequipment
Specialtestequipmentisneededthat
complies
withtheregulationstoperforminsu
lationandwithstandingvoltagetests.Detailed
requirementsandtolerancesmustbeverified
withyourlocalauthoritiesormeasurement
supplierinanycase.
Ideallythetestequipmenthasanational
powersocketfortesting,sothatthecoffee
machinecanpluggedindirectly.Otherwisea
specialshuntisnecessarytoconnectthe
phaseandneutralpinofthecoffeemachine’s
powerplug.
Ask Nespresso forrecommenda
tionsabouttestequipment.
Testreport
Forlegalreasonsarepairortestreportshould
bepreparedandfiledwithfollowinginforma
tion
 customer(name,address)
 typeandserialnumberofcoffeemachine
 dateofrepair/test(s)
 performedtest(s)/measuringvalue(s),test
points
 usedtestequipment
 signature
Testsequence
Dangerofelectricalshock/short
circuit!
• Donotpluginthecoffeemachine
duringinsulationtest.
Dangerofelectricalshock!
• Donottouchtipoftestprobes.
• Donottouchmetallicpartsofcoffee
machineduringtest.
•
Readandobservesafetyinstructions
inusermanualoftestequipment.
Continuedonnextpage.