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Installing and wiring telephone power supplies
110 Installing and Connecting the MDF and Telephones
4. Installing the battery mounting/wiring on page 115
5. Installing the expanded power distribution unit
on page 115
6. Powering up and testing the power supply
on page 116
7. Wiring the 1146B2 Power Distribution Unit
on page 117
8. Resetting LEDs on power distribution unit
on page 118
Important warning for 1145B2 power supply
!
WARNING:
WARNING: Important Safety Instructions follow.
When operating this equipment, basic safety precautions must be followed to reduce the risk of
fire, electric shock and personal injury, including the following:
● Read and understand all instructions.
● Do not attach the power supply cord to building surfaces.
● For continued back-up protection and battery reliability, replace batteries every four years.
● Follow all warnings and instructions marked on the products.
● Clean products only with a dry rag.
● Do not use this product near water.
● For mounting security, follow all installation instructions when mounting product.
● Openings on top and bottom of power unit are provided for ventilation. Do not block or
cover these openings. Do not exceed recommended environmental temperatures.
● Operate these products only from the type of power source indicated on the product
labels.
● The power unit is equipped with a 3-wire grounding plug; a plug having a third (grounding)
pin. This plug will only fit into a grounding power outlet. This is a safety feature. If you are
unable to insert the plug into the outlet, contact an electrician to replace the outlet. Do not
defeat the safety purpose of the grounding plug.
● Do not allow anything to rest on or spill into the products.
● To reduce risk of fire and electrical shock, do not overload power outlets.
● Never push objects of any kind through the power supply or distribution unit slots as they
may touch dangerous voltage points or short out parts that could result in a risk of fire or
electrical shock.
● To reduce risk of electric shock, do not disassemble these products. Return them for repair
when needed. Opening or removing covers may expose you to dangerous voltages or
other risks. Incorrect reassembly can cause electric shock when the products are
subsequently used.