Preventive Maintenance

Extending Battery Life

•Avoid exposing the battery to direct sunlight or tempera- tures over 104° F (40° C).

•Always use a Zebra charger designed specifically for Lithium-Ion batteries. Use of any other kind of charger may damage the battery.

•Use the correct media for your printing requirements. An authorized Zebra re-seller can help you determine the optimum media for your application.

•If you print the same text or graphic on every label, con- sider using a preprinted label.

•Choose the correct print darkness, and print speed for your media.•Use software handshaking (XON/XOFF) whenever pos- sible.

•If your printer has the optional LCD display, use the dis- play backlight only when necessary. Turn it off whenever it is not needed.

•Remove the battery from the printer if it won’t be used for a day or more and you’re not performing a maintenance charge.

•Consider purchasing an extra battery.

•Remember that any rechargeable battery will lose its ability to maintain a charge over time. It can only be recharged a finite number of times before it must be replaced. Always dispose of used batteries properly. Refer to Appendix D for more information on proper bat- tery disposal.

•Don’t print while the LI 72 Wall Charger is plugged into the unit. Unreliable battery charging can result.

Cleaning Instructions

CAUTION- Use only cleaning agents specified. Zebra Technologies Corporation will not be responsible for damage caused by any other cleaning materials used on this printer.

Clean the printer with either the cleaning pen supplied with the printer or a cotton swab saturated with alcohol.

WARNING: To avoid possible personal injury or damage to the printer, never insert any pointed or sharp objects into the printer. The Tear Bar has sharp edges. Use care when cleaning the Tear Bar or the Printhead to avoid possible personal injury.

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RW 420 User Guide