Hitachi NES1-004SB Quick Reference Manual page 32

Chapter 4 Installation
(1)Caution during transportation
Please pay attention when carrying the product because it is covered by plastic case.
Especially, do not put pressure onto the front cover and terminal cover. Otherwise there is a risk of falling
down the product. Please do not use products having damage, and/or lacking components.
(2)Ensure Adequate Ventilation
To summarize the caution messages – you will need to find a solid, non-flammable, vertical surface that
is in a relatively clean and dry environment. In order to ensure enough room for air circulation around the
inverter to aid in cooling, it is recommended to maintain the specified clearance and the inverter
specified in the below diagram.
5 cm (1.97")
minimum
Installation of the method of "Side-by-Side" does
not have UL standard to comply.
(3)Caution for ambient temperature
Set ambient temperature at installation site within the standard specification range (-10~50C).
Measure ambient temperature at the place apart by 5cm from the bottom center of inverter main body
and confirm that it is within the allowable temperature range.
Using the inverter at higher temperature than allowable temperature may result in shortening of
lifetime of inverter (especially of electrolytic capacitor). Derating curve is shown on section 12.3.
(4)Do not install the inverter in such places as high temperature, high humidity, or easy to condensate.
Use the inverter within the allowable humidity range (20~90%RH) described in standard
specifications.
Especially, please use it in place where no dew condensation occurs. If dew condensation occurs and
beading is generated inside the inverter, electronic parts are short-circuited each other to cause a
failure. Also, please avoid installing it in a location which receives direct sunlight.
(5)Caution for installation environment
Please avoid installing the inverter in such places where dust, corrosive gas, explosive gas,
flammable gas, mist of grinding fluid, or salt pollution, etc. exists.
Invasion of dust, dirt etc. into the inverter may cause a failure. So, when you use it in dusty place by
necessity, please devise a countermeasure such as putting it into a closed type chassis.
- Reduction of the carrier frequency or using bigger kW model is required if depends on the load or ambient.
- Do not open the front cover during live parts inside.
10 cm (3.94")
minimum
5 cm (1.97")
minimum
10 cm (3.94")
minimum
CAUTION
WARNING
4 - 2
Airflow
Surface
Adequate space for the airflow
must be kept. Pay attention for
wiring duct installation.