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Technical Information DFS 700 / 09.2008 1-1

1 Backup Battery Replacement

This document shows how to replace a backup battery in a DFS 700. The backup battery

should be replaced routinely every 12 months to ensure continuity of data collection and DFS

parameter settings.

(1) Remove both grey covers on the rear of the DFS 700 door.

(2) Ensure that battery / 12V power from transformer box is still connected to the sign and

the signs power switch is turned off.

(3) Carefullly remove the battery from its spring clip, being careful not to bend the clip back

too far and repalce with the new battery. Ensure that the battery is held in place by the

clip and is not loose. (Figure 1).

Figure 1

(4) Replace the grey covers as necessary to the rear of the door unit.

There is a slight risk of a short circuit occurring if the battery is accidentally dropped

while being replaced. Should this happen damage may occur to the circuitry.

To avoid these risks please take care when replacing the battery. Do not let the battery

drop onto the open soldering contacts below the battery housing or come into contact

with any other soldering joints.

Please dispose of the used battery in accordance with your local government laws and

regulations. Used batteries can be returned to the distributor or deposited in suitable

public waste collection facilities.

Do not dispose of the battery in normal domestic waste.

NOTE

3M DFS 700 Replacement Guide

Other manuals for 3M DFS 700