| 27
EN-Rev IM/GN-EN/1.2 Copyright © April, 2023. CSI Solar Co., Ltd.
deflection of the module is 25mm.
7 MAINTENANCE
Do not
make modifications to any component of the PV
module (diode, junction box, connectors or others).
Regular maintenance is required to keep modules clear of
snow, bird droppings, seeds, pollen, leaves, branches, dirt
spots, and dust.
Modules with sufficient tilt (at least 15°), generally may not
require cleaning (rain will have a self-cleaning effect). If the
module has become soiled, wash with water and a non-
abrasive cleaning implement (sponge) during the cool part
of the day. Do not scrape or rub dry dirt away, as this may
cause micro scratches.
Snow should be removed using a soft brush.
Periodically inspect the system to check the integrity of all
wiring and supports.
To protect against electric shock or injury, electrical or
mechanical inspections and maintenance should be
performed by qualified personnel only.
8 MODULE CLEANING GUIDELINES
This manual covers the requirements for the cleaning
procedure of Canadian Solar photovoltaic modules. The
purpose of these cleaning guidelines is to provide general
information for cleaning Canadian Solar modules. System
users and professional installers should read these guidelines
carefully and strictly follow these instructions.
Failure to follow these instructions may result in death, injury
or damage to the photovoltaic modules. Damages induced by
inappropriate cleaning procedures will void Canadian Solar
warranty.
SAFETY WARNING
Cleaning activities create a risk of damaging
the modules and array components, as well as increasing
the potential electric shock hazard.
Cracked or broken modules represent an electric shock
hazard due to leakage currents, and the risk of shock is
increased when modules are wet. Before cleaning,
thoroughly inspect modules for cracks, damage, and loose
connections.
The voltage and current present in an array during daylight
hours are sufficient to cause a lethal electrical shock.
Ensure that the circuit is disconnected before starting the
cleaning procedure, as contact with leakage of electrically
active parts can result in injury.
Ensure that the array has been disconnected to other
active components (such as inverter or combiner boxes)
before starting with the cleaning.
Wear suitable protection (clothes, insulated gloves, etc.).
Do not
immerse the module, partially or totally, in water or
any other cleaning solution.
Rear side cleaning of the modules is not required, if
cleaning the rear of a module is desired, care should be
taken to ensure there is no damage caused to the module,
especially the soft surface of the backsheet, by simply
clearing the contaminant by hand or with a soft sponge.
HANDLING NOTICE
Use a proper cleaning solution and suitable cleaning
equipment.
Do not
use abrasive or electric cleaners on the module.
Particular attention should be taken to avoid the module
rear glass or frame coming in contact with sharp objects,
as scratches may directly affect product safety.
Do not
use abrasive cleaners, de-greasers or any
unauthorized chemical substance (e.g. oil, lubricant,
pesticide, Gasoline, white flower oil, active oil, mold
temperature oil, machine oil (such as KV46), grease (such
as Molykote EM-SOL, etc.), lubricating oil, anti-rust oil,
stamping oil, butter
，
cooking oil, propyl alcohol, ethyl
alcohol, essential oil, bone-setting water, Tianna water,
mold release agent (such as Pelicoat S-6, etc.), glue and
