Cleaning; Inspection Of Connector And Cable - JinkoSolar JKM350PP-72-DV Installation Manual

c) No sharp objects are in contact with the PV module surfaces
d) PV modules are not shaded by unwanted obstacles and;or foreign material
e) Corrosion along the cells' bus-bar. The corrosion is caused by moisture intrusion
thought the module rear cover. Check the rear cover for damage.
f) Check whether the rear cover is burn out.
g) Check if screws and mounting brackets are tight, adjust and tighten as
necessary.

4.2 Cleaning

a) A build up of dust or dirt on the module(s) front face will result in a decreased
energy output. Clean the panel(s) preferably once per annum if possible (depend
on site conditions) using a soft cloth dry or damp, as necessary. Water with high
mineral content may leave deposits on the glass surface and is not
recommended.
b) Never use abrasive material under any circumstances.
c) In order to reduce the potential for electrical and thermal shock, Jinko
recommends cleaning PV modules during early morning or late afternoon hours
when solar radiation is low and the modules are cooler, especially in regions with
hotter temperatures.
d) Never attempt to clean a PV module with broken glass or other signs of exposed
wiring, as this presents a shock hazard.
e) Never use chemicals when cleaning modules as this may affect the module
warranty and energy output.

4.3 Inspection of Connector and Cable

It's recommended to implement the following preventive maintenance every 6
months:
a) Check the sealing gels of the junction box for any damage.
b) Examine the PV module(s) for signs of deterioration. Check all wiring for possible
rodent damage, weathering and that all connections are tight and corrosion free.
Check electrical leakage to ground. The Eagle Dual modules of the non-metallic
frame should not earthed.
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