Maintenance And Care; Visual Inspection - Jinko Solar JKM M-72 Series Installation Manual

based on your condition. Please take the cable length into consideration before
designing the wiring layout.
i）It is recommend to adopt inverter negatively earthed installation to avoid the PID
effect for non-PID free modules.

4. Maintenance and care

It is required to perform regular inspection and maintenance of the modules,
especially within warranty scope. To ensure optimum module performance, Jinko
recommends the following maintenance measures:

4.1 Visual Inspection

Inspect the Modules visually to find whether there are appearance defects, the
following need to be paid more attention especially:
a) Whether the glass is broken;
b) No sharp objects are in contact with the PV module surfaces
c) PV modules are not shaded by unwanted obstacles and/or foreign material
d) Corrosion along the cells‟ bus-bar. The corrosion is caused by the dampness
infiltrated into the Modules because that the surface encapsulation materials are
damaged during the installation or transportation.
f) Whether there is burning vestige on the backsheet.
g) Check fixing screws and mounting brackets are tight, adjust and tighten as
necessary.
Figure 9: Junction box
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