Huawei NetCol8000-E220 User Manual page 134

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Compone
nt
Y-type
filter
Figure 6-1 Drain valve
(1) Drain valve 1
Issue 06 (2020-08-19)
Item (Quarterly Maintenance)
If the outdoor temperature is
lower than 3°C, close the water
inlet valve and manually open the
drain valve (as shown in
6-1) to drain water. When the
water pump runs for the first
time every year, open the water
inlet valve. When the water pump
works, manually open the
exhaust plug of the water pump
(Figure 6-2) to clean the air.
Clean the air filter in the Y-type
filter periodically.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Troubleshooting
If the air is not completely
exhausted, air blockage may
occur and the water pump
Figure cannot spray normally. In this
case, you need to manually
exhaust the air. When the
water pump is running, loosen
the exhaust plug of the water
pump. When water flows out
of the exhaust hole, reinstall
and tighten the exhaust plug.
Replace the Y-type filter.
(2) Drain valve 2
125