PAGE 89 ALMAC s.r.l.
6.2.11 Checking the differential circuit breaker
With the frequency indicated in the general chart, check the differential circuit
breaker
Connect the plug in the ladder to an electric power supply that conforms to the
following specifications:
• Voltage: 230 v ± 10%
• Frequency: 50 Hz
• Grounding line working and equipped with a differential circuit breaker
• Use an extension power cord with an appropriate section depending on its
length
Press the button indicated in the figure and make sure that the differential
switch is triggered.
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