Epson DW935 Using Automatic Tune-Up Mode, Using the Manual Tune-Up Mode, Important Charging Notes

feature, please see the appropriate section below. Because batteries slowly lose their charge when they are not on the charger, the best place to keep your battery pack is on the charger at all times.

Using Automatic Tune-Up™ Mode

The Automatic Tune-Up™ Mode equalizes or balances the individual cells in the battery pack allowing it to function at peak capacity. Battery packs should be tuned up after every 10th charge/ discharge cycle or whenever the pack no longer delivers the same amount of work. To use the automatic tune-up mode, simply place the battery pack in the charger and leave it for at least eight hours. The charger will cycle through the following modes.

1.The red light will blink continuously indicating that the 1-hour charge cycle has started.

2.When the 1-hour charge cycle is complete, the light will stay on continuously and will no longer blink. This indicates that the pack is fully charged and can be used at this time.

3.Whenever the pack is left in the charger after the initial 1-hour charge, the charger will begin the Automatic Tune-Up™ Mode. This mode continues up to 8 hours or until the individual cells in the battery pack are equalized. The battery pack is ready for use and can be removed at any time during the Tune-Up™ Mode.

4.Once the Automatic Tune-Up™ Mode is complete the charger will transition to a maintenance charge; no indicator light shows the completion of the Automatic Tune-Up™ Mode.

Using the Manual Tune-Up™ Mode

The manual Tune-up™ mode equalizes or balances the individual cells in the battery pack at its peak capacity. This mode takes up to 8 hours to complete. Battery packs should be tuned up weekly or after 10 to 20 charge/discharge cycles or whenever the pack no longer delivers the same amount of work.

1.To tune up your battery pack, place the battery in the charger as usual. The red light will blink continuously indicating that the charge cycle has started.

2.Press the Tune-Up™ Mode button any time after the charge cycle has started. The red light will stop blinking momentarily, blink quickly 3 times, and then resume blinking continuously. The charger is now tuning up the cells in your battery.

3.When the Tune-Up™ mode cycle is complete, the light will stay on continuously. The pack is fully charged and may be used at this time or left in the charger.

4.If you select Tune-Up™ Mode and then change your mind, remove the battery from the charger. After 5 seconds, insert the battery into the charger. The normal charge cycle will begin.

Important Charging Notes

1.Longest life and best performance can be obtained if the battery pack is charged when the air temperature is between 65°F and 75°F (18°- 24°C). DO NOT charge the battery pack in an air temperature below +40°F(+4.5°C), or above +105°F (+40.5°C). This is important and will prevent serious damage to the battery pack.

2.The charger and battery pack may become warm to touch while charging. This is a normal condition, and does not indicate a problem.

3.If the battery pack does not charge properly — (1) Check current at receptacle by plugging in a lamp or other appliance, (2) Check to see if receptacle is connected to a light switch which turns power off when you turn out the lights. (3) Move charger and battery pack to a location where the surrounding air temperature is approximately 65°F - 75°F (18°- 24°C). (4) If charging problems persist, take or send the tool, battery pack and charger to your local service center.

4.The battery pack should be recharged when it fails to produce sufficient power on jobs which were easily done previously. DO NOT CONTINUE to use under these conditions. Follow the charging procedure. You may also charge a partially used pack whenever you desire with no adverse affect on the battery pack.

5.Under certain conditions, with the charger plugged into the power supply, the exposed charging contacts inside the charger can be shorted by foreign material. Foreign materials of a conductive nature

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