Perlight Solar PLM-OM Series Installation Manual
16
www.perlight.com
V.01.2022 A1.0
10. Maintenance
Modules need to be inspected and maintained regularly, especially during the warranty
period. To ensure optimum performance of the modules, the following maintenance measures
are recommended.
Cleaning
When modules are working, there should not be environmental factors creating shadows on
the modules, such as other modules, supporting rail, plants, heavy dust, dirt etc., which may
directly reduce the power output and may even cause regional hot–spot effects. Therefore,
clean the glass surface on a regular basis, clean modules take measures so as:
The frequency of cleaning depends on the rate of dirt build-up. Under normal conditions, the
rain will clean the surface of the module, but it is still required to regularly clean the module
surface using a soft sponge or cloth (dry or wet).
Never use a rough surfaced material to clean modules, do not use acid and alkali cleaner to
remove dirt.
Avoid pressing hard during cleaning, which may cause glass deformation, cell damage and
reduction of the module’s life.
During snow, remove the snow covered on the module in time to avoid the module damage
caused by long-term accumulation of snow cover and freezing of melted snow.
When cleaning the rear of the module, avoid piercing backsheet.
It is recommended that modules be cleaned in the early morning or late afternoon when light
is low and the module temperature is low, especially for areas with high temperatures.
