Nespresso Gran Maestria EF 287, Руководство по обслуживанию

Страница: 133 / 162

Maestria / Gran Maestria service manual
133
F U N C T I O N T E S T S
9.9.4 What to do if the protective earth continuity test fails
• Check/measure ground wire connections on:
• terminal block for power cord (Maestria: 64, Gran Maestria: 145)
• terminal screw on base (Maestria: 160, Gran Maestria: 141)
• terminal screw on both thermoblocks (809, 810)
• terminal screw on holder of brewing unit (78).
• Check/measure ground connection on milk frother connector (refer to page 80 and
page 91 for wiring diagram). Replace milk frother connector if necessary.
• Clean ground contact on milk frother. Measure resistance between ground contact
and jug of milk frother. Replace milk frother if necessary.
3) Press tip of red test probe onto
selected test point.
4) Press "measure" button and read off
displayed resistance.
The resistance must be lower than
0.3 Ohm.
Fill in measured value(s) in a test report.
4.
MEASURE
LOCK/ST
OP
COMP
LIGHT
0Ω ADJ
0.215 Ohm
Test passed
3.