EKOM 447000001-066, User Manual

Page: 21 / 72

INSTALLATION
04/2022 21 NP-DK50-9x4VRTM-AD-EN-5_04-2022
Prior to installation, ensure that
the compressor is free of all
transport
packaging and
stabilizers to avoid any risk of
damage to the product.
Remove all devices used to
secure the air pumps once the
compressor
is installed and
levelled at the site of final
installation.
The electrical connection of both frames
follows the physical installation of the frames
(6x4VRT and 3x4VRT). (Fig. 6)
Connect motors M7-9 and fans E21-E26 to
the controller box using the Molex connectors
installed in the cable trays. (Fig. 7)
Connect as follows:
Motor M7 (bottom) + cable W40 + cable W43
Fans E21-22 + cable W31 + cableW34
Motor M8 (middle) + cable W41 + cable W44
Fans E23-24 + cable W32 + cable W35
Motor M9 (top) + cable W42 + cable W45
Fans E25-26 + cable W33 + cable W36
Thermostat B9 is installed on the top motor
M9 and activates the fans when the motors
are off if the temperature is above 40°C.
Connect this thermostat using cable W47
directly to the thermostat contacts after
removing the cover (no connector).
Then, connect both frames using the green
and yellow bonding wire in the lower part of
both frames. (Fig. 8)
Fig. 7: Connecting motors M7, M8 and M9
Fig. 8: Bonding the frames