| 27
EN-Rev IM/GN-EN/1.0 Copyright © January, 2023. CSI Solar Co., Ltd.
potting glue that can generate oxime gas (such as KE200,
CX-200, Chemlok, etc.), TBP (plasticizer), cleaning agents,
pesticide, paint strippers, adhesives, antirust agent,
disincrustant, emulsifying agent, cutting oils and cosmetics,
etc.) on the module.
Do not
use cleaning corrosive solutions containing
hydrofluoric acid, alkali, acetone, or industrial alcohol. Only
substances explicitly approved by Canadian Solar are
allowed to be used for cleaning modules.
For cleaning methods using rotating brush, please consult
with Canadian Solar's technical support before using.
Dirt must never be scraped or rubbed away when dry, as
this will cause micro-scratches on the glass surface.
The
module damage due to improper dry cleaning method will
void Canadian Solar’s warranty.
Improper cleaning equipment design may cause localized
heavy loads onto the module. Localized heavy loads may
cause severe micro-cracks at cell level, which in turn may
compromise module reliability and void Canadian Solar’s
warranty. Please consult the Canadian Solar technical
support department for information on the use of cleaning
solutions and loading specifications. .
OPERATION PREPARATION
Noticeable dirt must be rubbed away by gentle cleaning
implement (soft cloth, sponge or brush with soft bristles).
Ensure that brushes or agitating tools are not abrasive to
glass, EPDM, silicone, aluminum, or steel.
Avoid cleaning during the hottest hours of the day, in order
to prevent thermal stress on the module.
CLEANING METHODS
Method A: Compressed Air
Canadian Solar recommends cleaning the soft dirt (like dust)
on modules just with air pressure. This technique can be
applied as long as the method is efficient enough considering
the existing conditions.
Method B: Wet cleaning
If excessive soiling is present on the module surface, a non-
conductive brush, sponge, or other mild agitating method may
be used with caution.
Ensure that any brushes or agitating tools are constructed
with non-conductive materials to minimize risk of electric
shock and that they are not abrasive to the glass or the
aluminum frame.
If grease is present, an environmentally friendly cleaning
agent may be used with caution.
Canadian Solar recommends the following to be used:
Water with low mineral content
Near neutral pH water
The maximum water pressure recommended is 4 MPa
(40 bar)
