ET Solar ET-M660BH GL Series, Руководство по установке

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
Cleaning activities create risk of damaging the modules and array
components, as well as increasing the potential electric shock hazard.

Do not clean the modules during the hottest time of the day to avoid thermal
stress on the modules.

Cracked or broken modules represent an electric shock hazard due to leakage
currents, and the risk of shock is increased when modules are wet. Before
cleaning, thoroughly inspect modules for cracks, damage, and loose
connections.

During the daylight, the voltage and current present in the array are sufficient
to cause a fatal electric shock.

Please make sure that the array has been disconnected from other active
components before starting the cleaning.

Wear suitable protective clothing (clothes, insulating gloves, etc.) when
cleaning the modules.

Do not immerse the module, partially or totally, in water or any other cleaning
solution.

Do not use such as lubricants and organic solvents to clean the connectors.

Do not clean modules under the weather conditions of wind more than 4 class
(in Beaufort scale), heavy rain or heavy snow.

When cleaning the modules, it is forbidden to step on the modules, forbidden
the injection of water to the backside of the modules or cables. Please ensure
that the connectors are clean and dry to prevent electric shock and fire
hazards.

Do not use steam cleaner.
For detailed requirements regarding cleaning, please refer to Manual for PV
ModuleOperation and Maintenance, available from
https://www.etsolar.hk/res-documents/
CLEANING METHODS
Method A: Compressed water

Requirement for water quality:

PH: 5 ~7;

Chloride and Salinity
：
0 - 3,000 mg/L

Turbidity
：
0-30 NTU

Conductivity
：
1500~3000 μs/cm

Total dissolved solids (TDS)
：
≤1000 mg/L

Water hardness (calcium and magnesium ions)
：
0-40 mg/L

Non-alkaline water must be used; demineralized water shall be used when
conditions are available

The maximum water pressure recommended is 4 MPa (40 bar)
Method B: Compressed Air

ET Solar recommends using this method to clean the soft dirt (like dust) on