Hitachi X200 Series instruction manual General Warnings and Cautions

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Warnings and Cautions for Troubleshooting and Maintenance

WARNING: Wait at least five (5) minutes after turning OFF the input power supply	… 6-2
before performing maintenance or an inspection. Otherwise, there is the danger of
electric shock.
WARNING: Make sure that only qualified personnel will perform maintenance,	… 6-2
inspection, and part replacement. Before starting to work, remove any metallic
objects from your person (wristwatch, bracelet, etc.). Be sure to use tools with
insulated handles. Otherwise, there is a danger of electric shock and/or injury to
personnel.
WARNING: Never remove connectors by pulling on its wire leads (wires for cooling	… 6-2
fan and logic P.C.board). Otherwise, there is a danger of fire due to wire breakage
and/or injury to personnel.
CAUTION: Do not connect the megger to any control terminals such as intelligent	… 6-10
I/O, analog terminals, etc. Doing so could cause damage to the inverter.
CAUTION: Never test the withstand voltage (HIPOT) on the inverter. The inverter	… 6-10
has a surge protector between the main circuit terminals above and the chassis
ground.
CAUTION: Do not connect the megger to any control circuit terminals such as	… 6-10
intelligent I/O, analog terminals, etc. Doing so could cause damage to the inverter.
CAUTION: Never test the withstand voltage (HIPOT) on the inverter. The inverter	… 6-10
has a surge protector between the main circuit terminals above and the chassis
ground.
HIGH VOLTAGE: Be careful not to touch wiring or connector terminals when	… 6-14
working with the inverters and taking measurements. Be sure to place the

measurement circuitry components above in an insulated housing before using them.

General Warnings and Cautions

WARNING: Never modify the unit. Otherwise, there is a danger of electric shock and/or injury.

CAUTION: Withstand voltage test and insulation resistance tests (HIPOT) are executed before the units are shipped, so there is no need to conduct these tests before operation.

CAUTION: Do not attach or remove wiring or connectors when power is applied. Also, do not check signals during operation.

CAUTION: Be sure to connect the grounding terminal to earth ground.

CAUTION: When inspecting the unit, be sure to wait five minutes after turning OFF the power supply before opening the cover.