Huawei NetCol8000-E220 User Manual page 138

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
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Air Filter
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Electrical Control
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Smart Cooling Product Frame
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Common Faults
If an exception occurs during the running of the smart cooling product, locate the
fault immediately. You can continue to use the smart cooling product only after
you rectify the fault. Do not blindly continue to use the smart cooling product to
prevent unpredictable losses.
Issue 06 (2020-08-19)
Do not operate when the equipment is powered on. Even after the equipment
is powered off, the intermediate circuit is still energized. Wait at least 3
minutes.
To disconnect electrical connections safely, take other measures if necessary.
For all operations on energized parts or circuits, there must always be two
persons present, so that one person can cut off the power supply in the case
of emergency.
The ventilation equipment can only be connected to a circuit with an
omnipolar isolator switch.
Follow the local standards for electromagnetic compatibility of the entire
equipment.
Periodically check the electrical equipment. Tighten the loose connector and
replace the damaged conductor or cable immediately.
When the final resistance of the air filter reaches the specified value, clean or
replace the air filter. Air filters are wearing parts.
Exercise caution when removing a dusty air filter from a metal frame to avoid
polluting the smart cooling product and damaging the filtering materials.
Replace the air filter.
Perform routine check on all electrical components and safety devices.
Periodically check valves that control the flow of media.
Check whether the grounding devices of the electric devices are complete and
functional.
Check the performance of safety protection devices such as circuit breakers
and AC contactors to ensure their safety and reliability.
Check the built-in lighting detection device. If it is damaged, replace it in a
timely manner.
Apply lubricants to all locking fixtures for lubrication.
Repair the damaged parts to avoid corrosion.
Check the tightness and connection.
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6 System Operation and Maintenance
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