Tanita 4521 Battery Charging, Charging the Battery, Product Description, Special Features

BATTERY CHARGING

The rechargeable battery in this scale is similar to the no-maintenance lead-acid batteries used in automobiles. Since the battery is sealed, no checking of water level or adding of water to the battery is necessary. However, recharging at proper intervals and proper storage procedures are necessary, similar to an automobile battery. A fully charged battery will provide approximately 250 normal weighings before requiring recharging. When the display flashes “Lo-b,” the battery needs to be recharged.

Charging the Battery

A. Plug the battery charger power cord into the 3-prong jack on control panel box. Secure by turning the knurled ring.

B. Plug the battery charger into a 120 VAC outlet.

C. The battery will fully charge in 8 hours. THE SCALE MAY BE USED WHILE THE BATTERY IS CHARGING.

NOTE: The specially designed charger built into this scale prevents the battery from being overcharged. Use of a charger or adapter other than the one designed for this scale can result in SERIOUS DAMAGE TO THE SCALE OR BATTERY.

Optimum battery life will be obtained if the scale is operated and stored connected to 120 VAC. Always check the plug to see if the scale is charging before moving.

STORAGE: When storing the scale for an extended period of time (and the unit is not connected to a 120 VAC), the battery should be fully charged. The battery should then be charged every three months. A discharged battery should be recharged as soon as possible to prevent its useful life from decreasing significantly. A discharged battery left in the scale can leak and cause permanent damage to the battery and scale. Store the unit in a cool, dry place.

PRODUCT DESCRIPTION

Pounds Kilos	Keypad
	63911

WEIGHT

ZERO

www.tanita.com	Push “ON” button
	POUNDS

and wait until zero

Switch	Primary Function	Secondary Function
On/Off	Depress to turn scale
	on or off.
Kilos	Depress to display	While in Kilos mode, depress for average
	weight in kilograms	reading when excessive movement
	(light over switch will	prevents stationary measurement.
	illuminate to indicate	Depress after any reading to “lock”
	kilogram mode).
		reading. Reading remains displayed for
		approximately 1 minute after patient is
		removed from scale, or until switch is
		depressed again. Kilos light will flash to
		indicate average or locked reading.
Pounds	Depress to display	Depress while in Pounds mode to
	weight in pounds	average reading.
	(light over switch will	Depress after any reading in pounds
	illuminate to indicate
		mode to “lock” in reading. Light will flash
	pounds mode).
		to indicate average or locked reading.
Zero	Zeros readout	Depress after initial weight is taken to
	(zeros out the weight	reweigh individual.
	of foreign object,
	e.g. blanket placed
	on platform).

Special Features

Tanita Corporation’s electronic scales come standard with these special features:

1.	Autozero: The scale will automatically display “0” when
	turned on. If a foreign object is placed on the platform
	before turning the scale on, it will automatically zero
	out that object’s weight.
2.	English-Metric Readout: You may switch between
	metric (kilos) and English (pounds) readouts before or
	after a reading, and the scale will convert one reading
	to the other.
3.	Recalculate Weight: If the first reading of a patient’s
	weight is suspect, a second reading can be taken
	without removing the patient from the scale. To reweigh
	the patient, simply depress the Zero switch.
4.	Average Weight: In most cases, the 4521 Scale
	displays an actual weight based on a series of
	consistent stable measurements. However, if the
	wheelchair/patient keeps moving, the scale may not
	get the readings required to give a “stable weight.” In
	these instances an average weight can be determined

appears before

stepping on scale

Control Panel Box

KILOS

ON

OFF

by activating the Average Locking feature. Depress the

Pounds (or Kilos) switch (dependent upon

measurement preference). The indicator light should

start flashing. A weight should appear in place of the

moving dashes. Depress the Pounds or Kilos switch

again to deactivate the feature.

The 4521 control panel keypad has four membrane switches. The POUNDS, KILOS, and ZERO switches have both primary and secondary functions listed below. Only the primary functions are listed on the switch.

5. Zero Ability: The operator can “zero out” the weight of

a blanket, etc., upon which a patient is to be weighed.

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