Hitachi Compute Rack 220H Replacement Manual page 18

Aluminum electrolytic capacitors
An aluminum electrolytic capacitor has a limited service life. Do not use it
past its service life. Otherwise, leakage or depletion of the electrolyte may
cause smoke or electric shock. To avoid such hazardous situations, replace
limited-life parts once they are past their designated service life.
Distribution board
Install a distribution board close to an entrance/exit to protect the devices in
your computer system and to serve as an emergency power breaker.
Signal cables
•
Route cables not to trip over them. Tripping over cables could cause
injury or failure of devices connected to the equipment, and also could
cause loss of valuable data.
•
Do not place heavy items on the cables. Avoid routing cables close to a
thermal appliance. If you do, it could cause damage to cable sheaths,
resulting in failure of the connected devices.
Before turning off the power
•
Follow the prescribed procedure for power operation. Power input or
output not according to the prescribed procedure may cause problems on
the system equipment.
•
Before turning off the power, confirm that all devices connected to the
equipment stop. Turning off the power during operation of the equipment
may cause equipment failure or data loss.
•
When you are using an OS which requires the shut down procedure, be
sure to finish the shut down procedure before turning off the power.
Otherwise, data may be lost.
xviii Safety guidelines
Hitachi Compute Rack 220H CRU Replacement Guide