Canadian Solar CS5AH-180M Installation Manual Of Replacement page 18

 Ensure that brushes or agitating tools are not abrasive
to glass, EPDM, silicone, aluminum, or steel.
 Conduct the cleaning activities avoiding the hottest
hours of the day, in order to avoid thermal stress on the
module.
We recommend the following to be used:
 Water with low mineral content
 Near neutral pH water
 The maximum water pressure recommended is 4 MPa
(40 bar)
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 environmental friendly cleaning
agent may be used with caution.
EN-Rev IM/GN-RM-EU/1.21P Copyright © June, 2021. CSI Solar Co., Ltd. www.csisolar.com