Hitachi WJ Series User Manual page 93

Chapter 6
6.2 Residual Risk Checklist
Operation
Work
No.
stage
1
Installation Installation
2
Installation Installation General CAUTION
3
Installation Installation General CAUTION
4
Installation Installation
5
Installation Installation General CAUTION
6
Installation Installation General CAUTION
7
Installation Installation General CAUTION
Installation
8
Wiring
Maintenance
Installation
9
Wiring
Maintenance
Use Wiring
10
Maintenance Inspection
Use Wiring
11
Maintenance Inspection
12 Installation Wiring
13 Installation Wiring
Target Residual
Details of hazard
section risk
Damage caused by
(B) CAUTION
careless carrying.
Reduction of component
life due to use in a location
exposed to direct sunlight
or at a temperature outside
of the specification range.
Short-circuit failure due to
use in a location with
humidity or condensation
outside of the specification
range.
The cooling fin that is
heated to exceed 150°C
(B) DANGER
ignites a flammable wall.
Component failure due to
ingress of dust, corrosive
gas, or other substances.
Reduction of a component
life due to degradation of
cooling capability by
horizontal installation.
When the fin of the inverter
is installed outside of
cabinet, the cooling fan
fails due to droplet, oil
mist, etc.
The arc discharge due to
screws loosened by
(A) DANGER
vibration, and ignites the
internal components.
The arc discharge due to
screws loosened by
General DANGER
vibration, and ignites the
flammable materials.
When the cover is
removed, electric shock is
(A) DANGER
caused in a high-voltage
section.
When the operator
removes the cover, electric
shock is caused when a
(C) DANGER
tool ouches a high-voltage
section.
Due to long wiring length,
the insulation of the motor
(D) DANGER degraded by surge, which
eventually burns the
motor.
By connecting a motor to
the different voltage class
inverter, insulation of the
(D) DANGER
motor degraded, which
eventually burns the
motor.
6-2-1
Operation Check/Residual Risk
Protection measures
Do not drop the product. Do not
carry the inverter in a manner
that applies force to the cover or
the keypad.
Ensure that the ambient
temperature is within the
standard specification range in
the whole year by means of
cooling and ventilation.
Ensure that the ambient
temperature is within the
standard specification range in
the whole year by means of
cooling and ventilation.
Otherwise, install the product in a
location free from condensation.
Install the inverter on an
inflammable metal wall.
Install the inverter inside a totally
enclosed panel.
Install the inverter vertically.
When the fin of the inverter is
installed outside of cabinet,
install it in a location free from
droplet, oil mist, etc.
Check screws are appropriately
tightened on a regular basis.
Check screws are appropriately
tightened on a regular basis. Do
not place flammable materials
around the installed inverter.
Do not remove the cover when
power is supplied.
After power is turned off, wait 10
minutes or more to perform
working.
Do not remove the cover when
power is supplied.
After power is turned off, wait 10
minutes or more to perform
working.
If the wiring length exceeds 20 m,
shorten the motor wiring length.
Or install the optional LCR filter
and output-side AC reactor.
Match the voltage class of the
inverter and the motor.
☑
□
□
□
□
□
□
□
□
□
□
□
□
□