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Chapter 5 5 5 5 Maintenance

Chapter

Maintenance

Inspect all modules annually for safe electrical connections, sound mechanical connection,

and corrosion.

BenQ Solar PV module may use anti-reflective coating (ARC) glass to enhance power

output.

Do not to touch glass surface unless wearing clean gloves in order to prevent

fingerprints or smudges on the ARC. Fingerprints may be removed with standard glass

cleaner.

Periodically clean glass and the module surface only with a soft cloth or sponge using

mild detergent and water.

Do not use harsh cleaning materials such as scouring powder, steel wool, scrapers,

blades, or other sharp instruments to clean the glass surface of the module. Use of such

materials will void the product warranty.

Dirt piled up on the module's transparent surface reduces its performance and may cause the

module hot spot effect. This problem may become serious in the case of industrial waste and

bird droppings collecting on the module surface.

Thin layers of dust (normal soiling) that reduce the sun's intensity evenly are not dangerous

and the power reduction is not as significant as other debris.

Clean the module array regularly to address reduced production due to soiling.

frequency of cleaning depends on how quickly material accumulates. Mounting the module at

or above a 15 degree angle will help prevent dust and debris from collecting on the module.

In many cases, rainfall may reduce or remove the need to clean the modules. It is best to

clean the module during early morning, late afternoon or cloudy day. Do not clean module

during high temperature, temperature lower than zero degrees Celsius, or any time when

there is a large temperature difference between module and cleanser.

If it is necessary to clean back side of module, do not damage any components. Avoid allowing

any oily liquids such as paraffin liquid, animal oil, or vegetable oil contacting with junction box,

cable and connector. BenQ Solar PV modules can withstand snow pressure of 2400 Pa.(UL

1703) Please use soft brush lightly removing snow pileup. Do not try to remove frozen snow

and solid ice on the module (it will eventually melt off).

2013/7/25

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