Tanita 3500 specifications Care and Maintenance, Cleaning, Calibration, Troubleshooting

Taking a Weight Measurement

1.Once an object’s (blanket, etc.) weight has been zeroed out and the display is reading “0,”

have the patient stand on the scale platform.

2.The moving dashes will lock in and display the patient’s actual weight.

3.Weight measurement should automatically be displayed on the control panel box.

•Measurement automatically defaults to pounds. If kilograms are required, depress the Kilos switch.

•If a reweigh is required, depress the Zero switch.

4.Excessive movement may prevent a repeatable reading. In this case, a series of moving dashes continues to appear on the console, rather than a weight reading. If moving dashes persist, activate the “Average Lock” by depressing the appropriate Pounds or Kilos switch to obtain an average reading of the patient’s weight.

Note: This reading is now an instantaneous average of weights that the computer calculates.

5.After weight is obtained and recorded, have the patient step off the scale.

6.Depress On/Off switch to turn scale off.

IMPORTANT: Make certain the platform height is adjusted so the wheels and platform bottom edge do not touch the floor or carpet. An incorrect patient weight reading will result if bottom of the platform touches. (See “Leveling the Platform” on page 3.)

CARE AND MAINTENANCE

Proper care and cleaning of all Tanita Corporation scales and accessories is essential to ensure a long life of accurate and effective operation. In addition to routine cleaning, include a regular check of all structural apparatus to ensure stability.

Cleaning

Disconnect battery charger from scale before cleaning.

1.All external surfaces can be wiped clean with a damp cloth or tissue. Mild soap and water solution may be used. Wipe unit dry with a clean, soft cloth.

2.DO NOT immerse control panel box into cleaning or other liquid solution.

3.DO NOT use isopropyl alcohol or other solutions to clean surface of control panel box.

4.Check for overall appearance of the whole scale for any obvious damage, wear and tear. Inspect the AC charger for cord cracking or fraying or for broken or bent prongs.

Calibration

Note: Your scale has been accurately calibrated at the factory; however, there is always a possibility that calibration has changed due to jarring in shipping. The following procedure should be followed to check and/or correct any error in calibration.

1.Depress On/Off switch on scale and wait for display to show “0.”

2.Place an accurately known weight on the platform.

3.If display is other than know weight, then scale is out of calibration.

4.Remove the 4 screws nearest the face switch panel (2 on each side – near the aluminum trim). Slightly loosen the remaining 4 screws (2 on each side), but do not remove. Lift off the top portion of the head. Be careful, since it is attached to the bottom portion with a ribbon cable. Looking at the bottom from of the head (underneath), you will see 2 small adjustment screws. The left metal screw (VR2) is for coarse adjustments; it adjusts for large errors. The right plastic screw (VR1) is for fine adjustments; it adjusts small errors.

5.Turn the left metal coarse calibration screw (VR2) in small increments, CLOCKWISE to increase weight or COUNTERCLOCKWISE to decrease weight. In most cases, this is the only adjustment needed.

6.If necessary, make adjustments with the right screw (fine adjustment). CLOCKWISE to decrease weight;

COUNTERCLOCKWISE to increase weight.

7.Remove weight and depress the Zero switch. Wait for a display reading of zero. Again add known weight to platform. If reading is correct, no further adjustments are necessary. If reading is incorrect, repeat steps 5 and 6 until correct reading is obtained.

TROUBLESHOOTING

The following guide will help you solve common problems:

PROBLEM	SOLUTION
Scale won’t turn on	A. Make sure plug in firmly plugged into wall power
	source.
	B. Check fuses or circuit breaker to ensure voltage
	is present in wall power source.
Incorrect patient weight	A. Platform too low and hitting platform feet or
readings	carpet. Increase platform height. See “Leveling
	the Platform” on page 3.
	B. Person, other than person being weighed,
	touching or leaning on scale handlebar.
	C. Weight of wheelchair or chair not taken into
	account. See “Operating Instructions” on page 4.
	D. Platform not level. See “Leveling the Platform” on
	page 3.
Display flashes “Lo-b”	Recharge battery. See “Charging the Battery”
	on page 3.
Patient weight readings	Check scale calibration and calibrate if necessary.
consistently too high or	See “Calibration” on page 5.
too low

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