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8.2 Controller and Junction Box Maintenance
Controller and junction box
The controller is electronic with no moving or wearing parts. It requires no
maintenance. There are rubber gasket seals at the top and bottom, and rubber plugs to seal unused
conduit holes. Inspect them to insure that the controller is sealed from moisture, insects, etc. Check that
mounting and conduit hardware is tight.
8.3 Solar Arr ay Maintenance
Solar array mounting bolts
Bolts tend to loosen as the array structure flexes in high winds. Check
tightness. All bolts should all have lock washers to keep them tight.
Sun exposure
Cut away any vegetation that will grow enough to block solar illumination. Shading even
a small corner of the solar array may stop the pump, or greatly reduce its flow.
Solar array cleaning
If there is dirt, mineral deposits, bird droppings or other debris stuck to the solar
array surface, clean it with water, vinegar or glass cleaner.
Solar Array Tilt
Inspect the tilt of the array. The optimum tilt angle varies with the season. Some
people adjust the tilt twice per year. Other people set it at a single setting as a permanent compromise.
Section 3.5 for details.
Solar Tracker
If the system uses a solar tracker, lubricate the bearings, check mounting bolts and
mechanism. Refer to tracker manufacturer's instructions. On a passive tracker, the shock absorber(s)
may fail every few years. To test, swing the tracker by hand. It should return slowly due to damping
action of the shock absorber. If it returns immediately (and swings in the wind) replace the shock
absorber(s).
8.4 Electrical Wiring Maintenance
Power wiring
Inspect wires and connections carefully. Any wires that are hanging loose should be
secured to prevent them from swinging in the wind. Exposed wiring must be sunlight resistant and in
good condition. In the case of a tracking array, look carefully for any wire damage due to rubbing,
bending, or pulling as the tracker swings. If wiring was not performed to professional standards, improve
it to prevent faults in the future.
Grounding
Inspect the grounding system carefully. All connections must be tight and free of corrosion.
Poor grounding can lead to damage from lightning-induced surges. See Section 4.2.
Содержание SunCentric P
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