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11. MAINTENANCE
The modules are designed for long life and require very little
maintenance. If the angle of the PV module is 5 degrees or more,
normal rainfall is sufficient to keep the module glass surface clean
under most weather conditions.
If dirt build-up becomes excessive, clean the glass surface by using
water. If cleaning the back of the module is required, take utmost care
not to damage the back side materials. Please avoid the cleaning with
water when there is a danger of frost and strong temperature
differences between the module, water and air. Hard water used as a
cleaning agent should be decalcified beforehand in order to avoid
water staining. Remove any standing water from the module.
In order to ensure the operation of the system, please check the
connection of wiring and the state of the jacket of wires every now and
then.
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