Mitsubishi Electric 800 Series, Instruction Manual, Page: 29 / 727

Installation of the inverter and enclosure design
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INSTALLATION AND WIRING
2.3.4
Inverter installation
 Inverter placement
• Install the inverter on a strong surface securely with screws.
• Leave enough clearances and take cooling measures.
• Avoid places where the inverter is subjected to direct sunlight, high temperature and high humidity.
• Install the inverter on a nonflammable wall surface.
• When encasing multiple inverters, install them in parallel as a cooling measure.
• For heat dissipation and maintenance, keep clearance between the inverter and the other devices or enclosure surface.
The clearance below the inverter is required as a wiring space, and the clearance above the inverter is required as a heat
dissipation space.
• When designing or building an enclosure for the inverter, carefully consider influencing factors such as heat generation of
the contained devices and the operating environment.

For the FR-A860-00090 or lower, allow 1 cm or more clearance.

For replacing the cooling fan of the FR-A860-02890 or higher, 30 cm of space is necessary in front of the inverter. Refer to page 661 for fan
replacement.
 Installation orientation of the inverter
Install the inverter on a wall as specified. Do not mount it horizontally or in any other way.
 Above the inverter
Heat is blown up from inside the inverter by the small fan built in the unit. Any equipment placed above the inverter should be
heat resistant.
Fix six positions for the FR-A860-02890 or higher.
Clearances (side)
Inverter
Clearances (front)
10 cm
or more
10 cm
or more
10 cm
or more 10 cm
or more
20 cm
or more
20 cm
or more
5 cm
or more
∗1
5 cm
or more
∗1
FR-A860-01080 or lower FR-A860-01440 or higher
Vertical
5 cm
or more
∗1, ∗2
Allow clearance.