TMC ET4000 manual Additional Information Replacing Your Battery, Operation During a Power Failure

Models: ET4000

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Additional Information

Replacing Your Battery

1Make sure the AC cord remains

attached to the telephone and to an electrical outlet.

2Turn the telephone over.

3Remove desk pedestal/wall mount bracket if attached.

4Remove battery door cover by using the tip of a ball-point pen, or paper clip, or similar object to release the battery door tab.

5Remove the old battery.

6Insert a new 9-volt battery.

7Close the battery cover.

Operation During a Power Failure

Your EPIC telephone uses AC power from a standard wall outlet. As long as the tele- phone is connected to a wall outlet, it will operate using the AC power. Please remem- ber to plug your telephone into a wall out- let that is not controlled by a wall switch. If AC power is disconnected or there is a power failure, the telephone automatically switches to battery operation for approxi- mately two hours. When the power is restored, the telephone automatically switch- es back to AC power and resumes normal operation. If the battery is missing or low on power when AC power is lost, the telephone will not function. However, all feature settings and memory numbers will be maintained, since they are stored in a static memory that retains its contents without electricity.

Please note that it is not necessary for you to install a battery in your Epic telephone for it to function normally. In fact, a battery is not even needed to preserve your memory dial numbers in the event of a power failure. This is because all memory dial numbers are stored in a static memory which retains its contents even with no electrical power. The only purpose of having a battery installed is so that the telephone itself can function for up to two hours in the event of a power failure. You may wish to install a battery in at least one Epic phone for emergency opera- tion, or have another standard phone available.

If you do choose to install a battery in your Epic telephone, we recommend only the use of an alkaline battery. Also, please make sure to install the battery after the telephone has already been plugged into the AC electrical out- let.

Note: It is recommended that you have at least one standard telephone connected, that does not require battery power, so that you are always sure to have use of a telephone during a power failure.

Page 78
Image 78
TMC ET4000 manual Additional Information Replacing Your Battery, Operation During a Power Failure