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Calibration
Note: Your scale has been accurately calibrated at the
factory. However, there is always a possibility that the
calibration changed due to jarring during 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 a display
of “0.”
2. Place an accurately known weight on the platform.
3. If display is other than known weight, then the scale is
out of calibration.
4. Remove the upper 2 screws from each side of the
control panel. Slightly loosen the bottom 2 screws 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. You will see 2
small adjustment screws toward the front of the control
board. The left metal screw is for coarse adjustments;
it adjusts for large errors. The right plastic screw is for
fine adjustments; it adjusts small errors.
5. Turn the metal coarse calibration screw 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 plastic fine
adjustment screw (right). CLOCKWISE to decrease
weight; COUNTERCLOCKWISE to increase weight.
7. Remove weight and depress Zero switch. Wait for a
display reading of “0.” 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.
NOTE: The Top Knob is for fine adjustment and the
Bottom Knob is for coarse adjustment. The fine
adjustment knob works opposite of the coarse
adjustment knob—CLOCKWISE if too heavy and
COUNTERCLOCKWISE if too light.
Taking a Weight Measurement
1. Once the chair weight has been zeroed out and the
display reads “0,” have the patient sit on the chair.
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 console.
• Measurement automatically defaults to pounds.
If kilograms are required, push 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 average of weights that
the computer calculates.
5. After weight measurement is obtained and recorded,
have the patient stand up off the chair and step away
from the scale.
6. Depress the On/Off switch to turn the scale off.
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 scale from 120 VAC before cleaning.
1. All external surfaces can be wiped clean with a damp
cloth. 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 solutions.
3. DO NOT use isopropyl alcohol or other solutions to
clean surface of control panel box.
4. Check the overall appearance of the whole scale for
any obvious damage, wear and tear. Inspect the AC
cord and adapter for cord cracking or fraying or for
broken or bent prongs.
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