Diodes
Inspection
PV modules come equipped with bypass diodes in the junction box to minimize heating
and current losses. Do not attempt to open the junction box to change the diodes if they
malfunction, as it can pose electrical hazards and void the module's warranty.
Battery
System
If your system uses a battery, consider placing blocking diodes between the battery and
the PV module output to prevent battery discharge at night.
Additional
Checks
n
Cleaning frequency depends on environmental conditions; high windy or dusty
areas may require more frequent cleaning.
n
For excessive soiling, use a non-conductive soft brush or sponge before using
water.
n
Cleaning should be done by trained personnel who understand the risks of
applying water to electrical components.
n
Wear safety gloves and appropriate electrical insulation PPE during cleaning or
inspection.
n
Clean modules during dusk to dawn to avoid generation time.
n
Perform maintenance at least once a year by trained personnel with safety gear.
975-1029-01-01 Rev E
February 2024
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