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:
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.
5
PROBLEM
Scale won’t turn on
Incorrect patient weight
readings
Display flashes “Lo-b”
Patient weight readings
consistently too high or
too low
SOLUTION
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.
A. Platform too low and hitting platform feet or
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.
Recharge battery. See “Charging the Battery”
on page 3.
Check scale calibration and calibrate if necessary.
See “Calibration” on page 5.
