Last revised: December 2011
9
Regular cleaning of the module
Regular cleaning of the module
Regular cleaning of the module
Regular cleaning of the module
Dirt piled up on the module’s transparent surface reduces its performance and may cause
reverse hot spot effects. The problem may become serious in the case of industrial waste and
bird droppings. The intensity of the effect depends on the waste’s opacity. The layers of dust
that reduce the sun’s intensity evenly are not dangerous and the power reduction is not
usually significant. The frequency of cleaning depends, of course, on how quickly dirt
accumulates. In many cases, rainfall may reduce or remove the need to clean the modules.
The cleaning operation must be performed, in general, by the user. It simply consists of
washing the modules with water and non-abrasive detergent.
Visual inspection of the module
Visual inspection of the module
Visual inspection of the module
Visual inspection of the module
The purpose of visual inspection of the module is to detect possible faults, specifically:
Possible broken glass.
Rust on the circuits and soldering of the PV cells: this is normally due to moisture
entering the module through a breakage in the encapsulating layer during installation or
transport.
Inspection of connections and cabling
Inspection of connections and cabling
Inspection of connections and cabling
Inspection of connections and cabling
Perform preventive maintenance every 6 months, carrying out the following operations:
Check the tightness and condition of the connection cable junctions.
Check the junction box sealing. Should sealing faults be observed, the items which have
been affected should be replaced and cleaned. It is important to monitor the junction
box sealing by using new sealing methods such as silicon sealing according to the case.
Certifications
IEC
IEC
IEC
IEC
–
The PV modules provided by BenQ Solar all pass the design qualification and type
approval standard IEC 61215 editions 2.
–
The PV modules provided by BenQ Solar all pass the safety qualification standard
IEC
IEC
IEC
IEC 61730
61730
61730
61730 certified for application class A.
–
Modules qualified for safety through EN IEC61730-1 and -2 within this application
class are considered to meet the requirements for Safety Class II.
ET
ET
ET
ETL
LL
L
This product meets or exceeds the requirements set forth by UL1703 for PV Modules.
This UL1703 Standard covers flat-plate PV modules intended for installation on
buildings and those intended to be freestanding. To satisfy the listing for this product
the modules must be mounted with a rack or standoff structure. It does not include
integration into a building surface because additional requirements may apply. This
product is not intended for use where artificially concentrated sunlight is applied to
the module.
BenQ Solar is a division of AU Optronics
© Copyright AUO Optronics Corp. All rights reserved. Information may change without notice.
