CHECK AND MAINTENANCE
7
Tab 2.1 Power Supply Voltage Confirmation
Measuring Items
Correct Value
Correlate voltage
220V
（
+10%
，
-15%
）
（
7
）
Open Phase Check
Tab 2.2 Open Phase Check List
Check Item
Contents
Lead Cable Check
Confirm if the lead cable for the power supply is wired as shown in the following. If the wiring is
wrong or broken, repair it.
Input
Power
Supply
Check
Check the open phase voltage of input power supply with an electric tester.
(Normal value: 220V AC (+10%, -15%))
Main
Circuit
Power
Supply Check
Check the open phase voltage of breaker, filter, transformer, and contactor with an electric tester.
(Normal value: 220V AC (+10%, -15%))
Fig 2.1 Power Supply Wiring