Huawei NetCol8000-E220 User Manual page 66

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
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Issue 06 (2020-08-19)
Connect power terminals in the phase sequence of L1, L2, and L3. Check
whether the phase sequence is correct using a phaser or other devices. In
addition, you need to connect one ground cable.
Connect the fan motor to the power supply with an overload protection
device.
Perform electrical tests before startup to check whether safety requirements
are met.
See the electrical diagram provided with the NetCol8000. The terminal ports
of peripheral devices in the NetCol8000 are usually short-circuited before
delivery. You need to remove the short-circuit cables and connect the
terminals to related devices according to the electrical diagram.
WARNING
● Keep away from device when preparing cables to prevent cable scraps
(such as iron chips, copper wires, and aluminum chips) from entering the
device. Cable scraps may cause ignition during power-on and result in
personal injury and device damage.
● After installing cables, clean up the sundries inside the device, electric
control box, copper cable, and other positions. Ensure that there is no dust
or scraps inside and around the device and electric control box.
Figure 3-32 NetCol8000 electrical port
(1) Signal transfer
terminals
Copyright © Huawei Technologies Co., Ltd.
(2) Crankcase heater relay
K3/K4, Water inlet motorized
valve of spray water tank relay
K5, Drain motorized valve relay
K6
3 Installation Guide
(3) Neutral wire terminal
57