F U N C T I O N T E S T S
9.8Protective earth (PE) continuity test
9.8.1 What coffee machine has to be tested and when?
This test is only necessary
for class 1 equipment (threewire power cord with protective earth)
for models Citiz & milk, EF 485/486
after a repair whenever a general disassembly of the platform and/or core unit was performed.
9.8.2 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 appliance and
performing the respective tests according to EN/IEC 603351 “Safety of household and similar electrical appliances” and national regulations (e.g. DIN VDE 0701).
Description
Protective earth continuity measurements are made between the protective earth terminal and conductive, touchable parts of the coffee machine where dangerous voltage could occur if the basic insulation was to fail.
This test assures that
the ground (earth) connection does not have an interruption between the plug and touchable, conductive housing parts
the permissible ground resistance of those conductive, touchable parts is less than 0.3 Ohms (with a test current of 200 mA DC).
Test equipment
Special test equipment is needed that complies with the regulations to perform protec tive earth continuity measurements. Detailed requirements and tolerances must be veri fied by your local authorities or measurement supplier in any case.
Test report
For legal reasons a repair or test report should be prepared and filed with following infor mation
customer (name, address)
type and serial number of coffee machine
date of repair/test(s)
performed test(s)/measuring value(s)
used test equipment
signature
Ask Nespresso for
recommendations about test equipment.
Citiz service manual | 141 |
