Protective Earth (Pe) Continuity Test; What Is The Protective Earth Continuity Test About; General - Nespresso ZENIUS ZN 100 PRO Service Manual

8.4 Protective earth (PE) continuity test

8.4.1 What is the protective earth test about?
This test is necessary
- for class 1 equipment (three-wire power cord with protective earth),
- after a repair whenever a general disassembly was performed.

8.4.2 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 60335-1 "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 of the power plug and
- the thermoblock,
- both side panels,
- the front cover.
This test assures that
- the ground (earth) connection does not have an interruption between the mains
plug of the power cord and the thermoblock as well as side panels,
- the permissible ground resistance 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
protective earth continuity measurements. Detailed requirements and tolerances must
be verified 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
information
- 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
F U N C T I O N T E S T S
Service manual ZN100 V 6.0
Depending on the
earth connection
circuit, only the last part
connected to earth can be
controlled (if the earth
wiring is in serie and not
parallel).
Ask Nespresso for
recommendations
about test equipment.
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