Hitachi SJ Series, User Manual

Page: 94 / 786

8-3
Chapter 8 Operation Check/Residual Risks
8.4 Residual Risk Checklist
* Installation, wiring, and setting work need to be
performed by specialized technicians.
No.
Operation
stage
Work
Target
section
Residual
risk
Details of harm Protective measure
√
1 Installation Installation (B) Caution
Damage caused by careless
transport
Do not drop the product. Do not
carry the inverter in a manner that
applies force to the cover or
operator keypad.
2 Installation Installation
‐
Caution
Reduction of component life
due to use in a location
exposed to direct sunlight or
at a temperature outside the
specification range.
Check that ambient temperature is
within the standard specification
range in the whole year by means
of cooling and ventilation.
3 Installation Installation
‐
Caution
Failure due to short circuit
caused by using in a
location which humidity and
condensation are out of
standard range described in
specification.. Check that 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.
4 Installation Installation (B) DANGER
The cooling fin that is
heated to exceed 150°C
sets fire to a flammable wall.
Install the inverter on an
inflammable metal wall.
5 Installation Installation
‐
Caution
Component failure due to
entry of dust, corrosive gas,
or other substances.
Install the inverter inside a totally
enclosed panel.
6 Installation Installation
‐
Caution
Reduction of a component
life due to degradation of
cooling capability by
horizontal installation
Install it vertically.
7 Installation Installation
‐
Caution
When the fin is installed
outside the inverter, the
cooling fan fails due to
droplet, oil mist, etc.
When installing the fin outside the
inverter, install it in a location free
from droplet, oil mist, etc.
8
Maintenance
for installation
Electrical
connections
(A) DANGER
Arc flew out due to screws
that are loosened by
vibration, and set fire to the
internal components.
Check screws are appropriately
tightened on a regular basis.
9
Maintenance
for installation
Electrical
connections
‐
DANGER
Arc flew out due to screws
that are loosened by
vibration, and set fire to
combustibles. Check screws are appropriately
tightened on a regular basis. Do
not place flammable materials near
the installed inverter.
10
Maintenance
before use
Wiring
Inspection
(A) DANGER
When the cover is removed,
electric shock is caused in a
high-voltage section.
Do not remove the cover when
power is supplied.
After power is turned off, wait 10
minutes or more to perform
working.
11
Maintenance
before use
Wiring
Inspection
(C) DANGER
When the operator removes
the cover, electric shock is
caused when a tool touches
a high-voltage section.
Do not remove the cover when
power is supplied.
After power is turned off, wait 10
minutes or more to perform
working.