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IMPORTANT SAFETY INSTRUCTIONS
DANGER: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, CAREFULLY
FOLLOW THESE INSTRUCTIONS.
WARNING: This unit should not be directly connected to a battery for charging or
for battery back-up. Battery charging and battery back-up may be undertaken only
when the battery is connected through suitable external isolating diodes and
charge limiting resistor. The isolating diodes will ensure that battery does not back
power the power supply. When a battery is deeply discharged, it will initially draw a
very large charging current and force the power supply into current limit mode for
prolonged periods. This is harmful for the power supply. The charge limiting resistor
will limit the charging current to ensure the maximum charging current is well
below the current limit value of the power supply.
This manual contains important safely and operating instructions for this power
supply. Before you use the power supply, read all the instructions and cautionary
markings in this manual, power ON the power supply, and the product that you
will connect to the power supply, to reduce the risk of injury:
• Do not use the power supply near water (for example, a bathtub, washbowl,
kitchen sink, laundry tub, wet basement, or swimming pool).
• Do not place the power supply on an unstable cart, stand or table. lf the power
supply falls, it could injure a person or cause serious damage to the power supply.
• Do not overload power outlets or extension cords. An overload can result in fire or
electric shock.
• Do not use an extension cord unless absolutely necessary. Using an improper
extension cord could result in a risk o re and electric shock. If an extension cord
must be used, make sure:
a. The pins on the extension cord's plug are of the same number, size, and shape
as those of the plug on the charger.
b. The extension cord is properly wired and in good electrical condition.
c. The extension cord's wire size is at least 18 AWG.
• Do not disassemble the charger; take it to a qualified service technician when
service or repair is required. Improper reassembly may result in a risk of electric
shock or fire.
• Do not use an attachment not recommended, this could result in a risk of fire,
electric shock, or injury to persons.
• Never push any object into the slot in the power supply. It could touch dangerous
voltage points or short out parts resulting in a fire or electrical shock.
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