CHAPTER 3. INSTALLATION 22
• Motor connector must be properly
mounted on the 3 pins of compressor her-
metic terminal. Bad connection will cause
compressor malfunction.
• The screws shown in Figure 3.1 and Figure
3.5 must be xed with a torque within 0.8 –
1.2 Nm range.
• The handling of Inverter enclosure must be
careful to avoid contact with the internal
electronic board, in order to prevent possi-
ble electrostatic discharges.
• Make sure all necessary connections are
properly done before connecting the In-
verter to AC supply line.
• The electronic Inverter must be installed in
the vertical position.
• When using Serial or Frequency commu-
nication mode the inverter has reinforced
isolation. When using Drop-in mode (ener-
gized contact) the inverter has functional
insulation.
• In order to avoid ESD discharge to the in-
verter circuit, insert the earth terminals at
rst.
3.1.3 Forced ventilation
Recommended position of fan + compressor + inverter are shown in the gure 3.8.
*
.
All mentioned positions are acceptable. Considering specic aspects as inverter
and motor-compressor cooling, the most recomendated are positions 1-4. The last
recomendated but still acceptable are positions 5 and 6.
Both air ow directions are acceptable, but position above illustrated is preferred.
The inverter heat sink air ow is shown in Figure 3.9. As reference, the heat sink
also is shown on Figure 3.1.
*
The gures displayed here are merely illustrative
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