How to Maintain Your Solar PV System
Solar PV systems are quite robust in construction and can provide trouble-free operation for several years. However, individual components of PV systems – such as inverters, cables, diodes, etc. – have their own life spans, and can be affected by factors that may work upon them in isolation.
Therefore set up and maintain a periodic system inspection schedule to ensure peak performance throughout the year. Ideally, here is what your basic inspection schedule should look like:
|Inspection Frequency||Component||What to Inspect|
|Daily||Inverter||Check for faulty displays.
Also check for heating up of the inverter. If the device is too hot to touch, immediately hut down system and call for a qualified technician.
Batteries (if present)
|Soiling/accumulation of debris: Check for bird droppings, fallen leaves, layer of dust caused by dust storms, air pollution etc. If present, clean with fresh water and a soft sponge. DO NOT use brushes or dry cleaning equipment
Check for any warping of structure caused by storms or extremes of temperatures or other mechanical stress.
Check for loose connections at the input and output side of each component (arrays, combiner box, inverter, energy meter, etc.)
Check for connections with charge controller and the inverter. Also check for acid formation at battery terminals.
|Every six months||PV Array|
PV Combiner Box/Junction Box (if present)
|Check for delamination
(If mounted outdoors) Is there any accumulation of moisture or presence of insects/rodents etc.
Check for blown fuses
Check for charred spots, breaks in insulation and any damage caused by animals or insects. Also inspect connections to individual components
|Every three – four years||Full System Scan|
For Outdoor Mounted Inverters
|(To be performed by a qualified technician) Repeat all system measurements performed during system commissioning
Check for presence of humidity and breaks in component housing
|As and when suspected||PV Modules|
PV Combiner/Junc-tion Box
AC Protective Equipment
|Check for I-V curves and peak output (to be performed by qualified technician)
Check string fuses
Check Line Circuit Breakers, AC fuses and Residual Current Devices (RCDs)
Note that most of the above checks are meant to be performed visually only. In the interest of your safety and system integrity, for any checks that require technical expertise, always call a qualified technician.
To read more about how to maintain your solar pv system, click here.