WEL/ IM/ 05/ 18.03.2016
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For cleaning of Modules Fresh water (TDS < 1500 mg/l) may be used. If needed, a mild, non-abrasive,
non-caustic detergent with a final fresh water and detergent solution mix between 6.5 < pH < 8.5 at 25°C
may be used.
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When using water, RO water provides the best results. In absence of RO water, tap water with low
mineral content (total hardness <75 mg/l) or deionized water may be used. Calcium should not exceed:
75 mg/ml. Do not use solutions containing hydrochloric acid, D-Limonene, ammonia or sodium
hydroxide.
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Clean the Module either with a soft sponge or a soft rubber wiper. Do not use abrasive cleaners or de-
greasers on the Module. Do not scrub the Module with abrasive brushes. Such brush fibers may scratch
the glass, reducing the power output of the panel.
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In case if soft water (with low mineral content) is not available, Module can be dry cleaned with the help
of a soft cloth or with soft sponge to remove dirt, dust. One can also use wet cloth, sponge to clean dirt
which is not easily removed by dry cleaning.
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Do not clean or spray water at the Junction Box or any area on the backside of the Module.
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Frequency of Cleaning will vary depending upon any special conditions in the area where the Modules
are installed. Modules installed in high windy or dusty areas should be inspected more frequently.
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If excessive soiling is present, a non-conductive soft brush, sponge, or other mild agitating method may
be used before using water. Ensure brushes or agitating tools are not abrasive to glass.
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Module damage that arises as a result of improper cleaning will not be warranted by WAAREE Energies
Ltd.
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Do not clean the glass surface with chemicals. Do not let water stay on the glass surfaces of PV Modules
for a long time. This creates a risk of permanent damage to the glass, such as white efflorescence,
otherwise known as “glass disease,” which may cause reduced power output.
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To avoid dirt accumulation or white efflorescence due to water accumulation, do not install PV Modules
horizontally (flat).
WAAREE ENERGIES LIMITED
602, Western Edge-I, Off. Western Express Highway
Borivali (E), Mumbai 400066, Maharashtra, India
Tel: +91-22-66444400
waaree@waaree.com
