Citizservicemanual
145
F U N C T I O N T E S T S
9.9.3 Testsequence
Dangerofelectricalshock/shortcircuit!
Donotpluginthecoffeemachineduringinsulationtest.
Dangerofelectricalshock!
Donottouchtipoftestprobes.
Donottouchmetallicpartsofcoffeemachineduringtest.
Readandobservesafetyinstructionsinusermanualoftestequipment.
ASwisspowerplugis
shownhereasan
example.
Useashortcircuit
plugorspecialalliga
torclipsetc.assub
stituteforthistestadapter.
1) Connectthephaseandneutralpinof
thepowerplugtogetherwithatest
adapter(procuredbytherepair
centre).
2) Connecttheblackmeasuringcableto
thetestadapter(seeimage).
3) TurntheONOFFmachine'smain
switchonpositionI(ON).
Symbolicillustration
oftestequipment.
4) Switchontestequipmentandselect
aninsulationtestvoltageof500VDC.
Sometestequipment
displaystestpassed
orfailedinsteadof
theinsulationresistance.
5) Touchclosinghandlewithredtest
probe.
6) Press"measure"button.
7) Readoffdisplayedinsulationresist
anceortestresult.
Theinsulationresistancemustbe
higherthan300 kOhm
(300,000 Ohm).