Installation Manual

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b The period of the PV module cleaning shall be determined by the condition of the weather & pollution. O&M operator shall
keep record of weather condition everyday with photo and data.
5.5 Condition of Cleaning
5.5.1 Use clean water or ltered water with soft type material (a sponge) to wipe the PV module. Never use chemicals on the
surface of the module.
5.5.2 Cleaning after sunset or before sunrise is recommended for safety of O&M operator shock from heat stroke.
5.5.3 Do not use abrasive powder, abrasive cleaners, scrubber cleaners, polishers, sodium hydroxide, benzene, nitro-thinners,
acid or alkali and other chemical substances.
5.5.4 Do not clean broken glass or modules with broken lines or exposed wires, as it may cause the electric shock.