Instruction Manual

SP70 Solar Panel
FIGURE 17. Morningstar’s SunSaver SS-10-12V Regulator Mounted
on an Enclosure Backplate
FIGURE 18. Battery Terminal Strip Adapters for Power Connection to
External Battery
4. Maintenance
An occasional cleaning of the glass improves the solar panel's efficiency. If a
problem with the solar panel is suspected, the panel may be checked by
measuring the voltage output. Check the voltage with a voltmeter connected
between the two leads of the solar panel. There must be solar radiation
incident on the panel and there must be a load connected to the solar panel.
The load can be the datalogger, other equipment, or a 75 ohm resistor capable
of dissipating solar panel power between the two leads. No voltage output
implies a bad solar panel, regulator, or cable. The magnitude of the voltage
output depends on the incident solar radiation.
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