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1
SAFETY INSTRUCTIONS
• Use caution to reduce the risk of dropping a metal tool on the battery. It could
spark or short circuit the battery or other electrical parts and could cause an
explosion.
• Remove metal items like rings, bracelets and watches when working with
batteries. The batteries can produce a short circuit current high enough to weld a
ring or the like to metal and thus cause a severe burn.
• If you need to remove a battery, always remove the ground terminal from the
battery rst. Make sure that all the accessories are off so that you do not cause a
spark.
Charge Controller related
• It is to be ensured that the input voltage fed to the Charge Controller does not
exceed 50 VDC to prevent permanent damage to the Charge Controller. Ensure
that the maximum Open Circuit Voltage Voc of the 12 V nominal Solar Panel /
the Solar Array is less than 50 V. If two 12 V nominal Solar Panels are being used
in series to make a 24 V nominal Solar Array, make sure that the maximum Open
Circuit Voltage Voc of each of the 12 V Panels is less than 25 V.
• Do not exceed the maximum current rating of 30 A. The Short Circuit Current of
the Solar Array should be less than 30 A
• Do not exceed a battery voltage of 24V (nominal) . Do not use a battery less than
12V.
• Charge only 12, or 24 volt Lead-Acid batteries when using the standard battery
charging programs or Ni-Cd batteries when DIP Switch number 2~4 is in the ON
position.
• DO NOT short circuit the PV array or load while connected to the controller. This
will damage the controller.
• The controller should be protected from direct sunlight. Ensure adequate space
for air ow around the controller’s face plate.
• Do not install in a sealed compartment with batteries.
• Never allow the solar array to be connected to the controller with the battery
disconnected. This can be a dangerous condition with high open-circuit solar
voltage present at the terminals.
• Use only copper wire with minimum 75°C insulation rating and between 10 AWG
(5.2 mm
2
) and 14 AWG (2.1 mm
2
) gauge.
• The Negative system conductor should be properly grounded. Grounding should
comply with local codes.
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