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ground should be avoided as much as possible in order to
increase the bifacial gain.
5.5 Bifacial Electrical Considerations
The overall electrical bifacial gain is determined by the
combination of surface albedo, irradiance, module tilt
angle, shading losses from the rearside, rearside mismatch
and module elevation above ground. Please refer to the
Maxeon datasheet for the electrical outputs with respect
to the overall bifacial gain. Please utilise a suitable
performance software package to simulate the overall
bifacial gain.
5.6 Handling of Modules during Installation
Do not place modules face forward in direct contact with
abrasive surfaces like roofs, driveways, wooden pallets,
railings, stucco walls, etc...
The module front surface glass is sensitive to oils and
abrasive surfaces, which may lead to scratches and
irregular soiling.
During storage, modules need to be protected from rain or
any kinds of liquids. Required storage temperature is
between 10°C to 40°C in a dry environment (humidity
between 30 to 80%). Do not store modules outdoor to avoid
moisture and wet conditions.
Modules that feature antireflective coated glass are prone
to visible finger print marks if touched on the front glass
surface. Maxeon recommends handing modules with anti-
reflective glass with gloves (no leather gloves) or limiting
touching of the front surface.
resulting from installation will naturally disappear over
time or can be reduced by following the washing
guidelines in Section 6.0 below. Any module coverage
(colored plastic tarps or similar) during installation can
lead to permanent front glass discoloration and is not
recommended. The use of vacuum lifting pads can cause
permanent marks on the front glass. Never lift or move the
module using the cables or the junction box under any-
circumstances.
Ties or tapes used to secure cables are designed for
transportation. They are not designed to comply with local
requirements for securing PV cable to the array, and may
cause shading on bifacial panels reducing performance.
Shading incidence need to be avoided during PV system
operation. The system is not supposed to be energized
until the mounting scaffolding, fences or railing have been
removed from the roof.
Systems should be disconnected in any cases of
maintenance which can cause shading (e.g. chimney
sweeping,
any
roof
installations, etc).
When a residential installation (with "RES" in the
description)
is
SunPower/Maxeon modules with different Part Numbers
(SKU's), in order to minimise cosmetic differences between
modules, please ensure the anti-reflective supplier of the
modules are identical. This can be done by referring to the
product description, and looking for AR-XX, where "XX"
denotes the supplier and these characters shall be all
identical.
©2024 Maxeon Solar Technologies, Ltd. All rights reserved. Specifications included in this manual are subject to change without notice.
Any finger print marks
maintenance,
antenna/dish
designed/planned
using
Safety and Installation Instructions - Document 001-15497 Rev.AB
6.0 Maintenance
Maxeon recommends visual inspection on a regular basis
of all modules for safe electrical connections, sound
mechanical connection, and free from corrosion. This
visual inspection should be performed by trained
personnel. The standard frequency is once a year
according to environmental conditions, periodic cleaning
of modules is recommended but is not required. Periodic
cleaning has resulted in improved performance levels,
especially in regions with low levels of annual precipitation
(less than 46,3cm (18,25 inches)). Consult your dealer or
supplier about recommended cleaning schedules for your
area.
To clean a module, wash with potable, non-heated, water.
Normal water pressure is more than adequate, but
pressurized water up to 100 bar (min.50 cm distance) may
be used. Maxeon recommends using a large hosepipe and
not to perform cleaning at high outside temperatures.
Fingerprints, stains, or accumulations of dirt on the front
surface may be removed as follows: first rinse off area and
let soak for a short period of time (5 mins). Re-wet and use
a soft sponge or seamless cloth to wipe glass surface in a
circular motion.
Fingerprints typically can be removed with a soft cloth or
sponge and water after wetting. 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.
As dry cleaning is also risky for Anti-Reflective (AR) coated
module surface, spinning brush is not recommended for
module cleaning.
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