Welch Allyn 500KLWA PROFESSIONAL DIGITAL BEAM SCALE - User Manual - Manual (Page 6)

6
MAINTENANCE AND CLEANING 500KLWA
Before first use and after periods of non-use, check the scale for proper operation.
Disconnect the scale from the power source, if plugged in.
1. This scale contains electronic parts. Use it carefully. Do not drop, kick or jump on it.
2. Do not store near chemicals, heaters or radiators.
3. Do not store scale on its side.
4. To clean the scale, wipe the outside of the scale with a soft cloth and mild detergent. Do not use abrasive cleaners. Do not use
isopropyl alcohol, other solutions or sanitizing wipes to clean the display surface.
5. Never place the scale in the water. Do not spray it with liquid.
6.
This scale is an extremely sensitive weighing device. Items such as clothing or towels placed or dropped on the scale may cause it
to activate. In order to prevent run down of the battery, do not store or leave anything on the scale.
CALIBRATION
This scale has been factory calibrated and does not require calibration prior to use.
For maintenance, the calibration procedure may be performed using a known weight in either kilograms or
pounds. Simply set the scale for the desired unit of measure using the LB/KG button
and start the calibration
procedure. The calibration is performed using kg or lb, according to the unit of measure used upon entering into
the calibration path, meaning the scale will default to either kg or lb, if that was the setting left on the scale for
weighing.
Note: Calibration weight must be no less than 40 kg (100 lb) and no more than 200 kg (500 lb).
TROUBLESHOOTING
7.
Refer to the following instructions to check and correct any failure before contacting Customer Service personnel.
SYMPTOM
POSSIBLE CAUSE CORRECTIVE ACTION
Scale does not turn on 1. Battery problem
2. Bad Power Supply or Not Plugged In
3. Electrical Outlet not functioning 1. Check / Replace the batteries
2. Check / Replace Power Supply Adapter
3. Use a different outlet
“LobAt”
shows in display
The batteries are low Replace batteries according to instructions
Questionable weight or
the scale does not zero 1. External object interfering with the scale
2. The display did not show “0.0” before
weighing
3. Scale is not placed on a level surface
4. Scale is out of calibration
1. Remove interfering object from the scale
2. Ask the patient to step off the scale. Zero the
scale and begin weighing process again.
3. Place scale on level surface
4. Check weight with know weight value
“OVER”
shows in display
Overload. The load on the scale exceeds
scale capacity (220 kg / 500 lbs) Remove weight, turn scale off, turn scale on again
and try again
“UNDER”
shows in display
Negative weight, indicating a tare was
present. Load on the scale is below initial zero
point Clear scale of any weight and re-zero scale by
pressing ZERO button
ACTION DISPLAY SHOWS
Press and hold the LB/KG and ZERO buttons at the same time, then press the ON/OFF
button to turn on the scale. “CAL” followed by a number indicates you can calibrate. “CAL” then
“XXXXX”
Press the ZERO button. "C-40” (for kg mode) or “C-100” (for lb mode) will flash on the display
and then the display will return to “0”. “C-40” or “C-100”
Place 40 kg or 100 lbs on the scale and when calibration number stabilizes, press the ZERO
button. “C-80” (for kg mode) or “C-200” (for lb mode) will flash on the display and then the
display will return to “0”. “C-80” or “C-200”
Place 80 kg or 200 lbs on the scale and when calibration number stabilizes, press the ZERO
button. “C-120” or “C-300” will appear on the display and then the display will return to “0”.
“C-120” or “C-300”
Place 120 kg or 300 lbs on the scale and when calibration number stabilizes, press the ZERO
button. “C-200” or “C-500” will appear on the display and then the display will return to “0”.
“C-200” or “C-500”
Place 200 kg or 500 lbs on the scale and when calibration number stabilizes, press the ZERO
button. “ END ” will appear on the display and then the scale will automatically turn off. “END”