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7. Operation and Maintenance
It is required to perform regular inspection and maintenance of the modules, especially within warranty
scope. It is the user's responsibility to report to the supplier regarding the damages found.
7.1 Cleaning
· HHI modules are designed for long life and require very little maintenance. Under most weather
conditions, normal rainfall is sufficient to keep the module glass surface clean.
· Do not touch the glass since finger prints or stains will easily mark the glass.
· For AR coating HHI modules utilize special materials to increase energy harvest. Always use gloves
when handling the module, never touch the glass with bare hands. If dirt build-up becomes excessive,
clean the glass surface only with no heated water only. Normal water pressure is more than adequate.
· 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 or cleaning without
consultation will invalidate the product warranty.
· PV modules that are mounted flat should be cleaned more often, as they will not "self-clean" as
effectively as modules mounted at a 15° tilt or greater.
· Do not clean the back of the module. If cleaning the back of the module is required, please contact
local representatives for more detailed information.
7.2 Visual Inspection of Modules
· Inspect the Modules visually to find whether there are appearance defects, the following need to be
paid more attention especially:
1) Whether the glass is broken
2) Corrosion along the cells' bus-bar
3) Whether there is burning vestige on the back-sheet.
7.3 Inspection of connector and Cable
In order to ensure proper operation of the system, please check all wiring connections and the
condition of the wire insulation periodically.
Sales Office
2nd Fl., Hyundai Bldg.,
75, Yulgok-ro, Jongno-gu,
Seoul 110-793, Korea
Page 13 of 16
www.hhi-green.com/solar
Factory
313, Soi-ro, Soi-myeon, Eumseong-gun,
Chungcheongbuk-do 369-872, Korea
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