OPERATING INSTRUCTIONS
Upper poise
weight
Balance ball
Balance ball
screw
Pillar head
Zero Balance Adjustment
Before first use, the scale needs to be zero balanced by following the instructions below. The scale
should also be checked and balanced periodically, particularly when moved.
Note: A flat head screwdriver is required.
1. Ensure that the scale is located on a hard, flat, and level surface. Step on and off scale several
times in order to align all internal parts.
2. Place both poise weights on the "0" value on both bars. The beam pointer should float gently up
and down, and not touch the top or bottom of the trig-loop.
3. If the beam pointer is not centered in the trig-loop opening, using a flat head screwdriver, rotate
the balance ball screw to correct the beam pointer. Turn the screw about ¼ turn forwards or
backwards and let poise bar settle. Based on which direction the poise bar moved turn ¼
forwards or backwards again and let poise bar settle until the pointer is centered in the trig loop.
Weighing Instructions
1. Set the upper and lower poise weights to indicate the patient's approximate weight.
2. Have patient step onto the scale. Ensure they are positioned directly in the center of the
platform. Continue to adjust the upper and lower poise weights until the pointer is centered.
Note: It is not necessary for you to wait for the pointer to stop moving in order to read the
correct weight. As long as the pointer is moving equally within the trig-loop opening, the
patient's weight can be determined.
3. To read the patient's weight, observe the location of the indicator arrow built into each poise
weight. Read the value on the poise bar, closest to the indicator arrow.
4. For easy identification, pounds (lb) have black graduations on a silver background, located on
the poise bars.
5. Add the indicated reading of the upper poise value to the indicated reading of the lower poise
value. The total amount is the patient weight. See the example on the next page.
Note: To transport your scale, acquire the optional wheel bracket (Item # 55000). Please refer to
the "Transportation" section on page 11 for assembly instructions.
P/N UM402LB REV20220928_web
Upper poise bar
Pillar
7
Lower poise weight
Lower poise bar
Pointer
Trig loop