7.7 Fans and fan connections
Fan packages with EC motors
WARNING:
EC-fans
: Electrical load (>50 μC) between mains wire and protective earth
connection after switching of the supply when switching multiple devices in parallel.
Electric shock, risk of injury. Ensure that you have sufficient protection against
accidental contact.
Before working on the electrical connection, short the connections to the mains
supply and PE.
EC-fans
: Terminals and connections have voltage even in a unit that is shut off.
Electric shock. Wait for five minutes after disconnecting the voltage at all poles before
opening the device.
WARNING:
EC-fans
: High temperature at the electronics enclosure. Danger of burn injuries.
Ensure that you have sufficient protection against accidental contact.
The fan package is suitable for 380...420 V 50/60 Hz electric network.
The protection glass is IP54, as the option fans are prewired to the safety switch (IP65).
Fan motors/electronics are over temperature protected.
Fans installed in horizontal position
Route the cable in a loop (water trap).
Fans installed in upright position
When routing the cable, ensure that you arrange the screwed cable glands at the bottom. Always route the
cables downwards.
The fan units are preset at the factory to the required fan speed. Ask the condenser/liquid cooler manufacturer
about the technical data of the fan motors.
©
Alfa LU-VE, Rev-04
50
Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.