Welch Allyn Health-o-Meter Professional Scales - User Manual - Manual (Page 9)

8
CALIBRATION
These scales are factory calibrated and do not require calibration prior to use.
For KG scales, on the back of the display module, to the left of the DC IN power jack, is a small access cover
plate. The cover plate is held on by a hex sealing screw. Removing the cover plate exposes the Calibration
Enable / Disable (push off / push on) switch.
NOTE: The scale is shipped with the switch in the calibration disable position (push on).
For KL scales, the calibration procedure may be performed using a known / certified weight in either pounds or
kilograms. The default is in pounds, but calibration can be done in kilograms. The following instructions assume
the scale is set to pounds. If you prefer to calibrate in kilograms, please call Customer Service at one of the
numbers given on page 4.
Note: Calibration weight must be no less than 60 lb (27kg) and no more than 300 lb (150 kg).
ACTION DISPLAY SHOWS
For KG models only, the calibration switch on the display must be set to the
enabled position—toggle the calibration push switch to OFF (see above).
For KG models, while the display module is on and “START” is displayed
(for 3 seconds); Press
→
0
←
/ kg / kg /
→
0
←
“CAL” will appear on the LCD
For KL models, while the display module is on and “START” is displayed
(for 3 seconds); Press ZERO - KG/LB - KG/LB - ZERO “CAL” will appear on the LCD
Press ENTER Enter load weight “Load/150.0”
Press ENTER to calibrate with 150 kg (KG models) or 300 lb (KL models)
Press BMI to change the weight and then the arrows to change the flashing
digit, BMI to move to the next digit, until you reach the required weight (no
less than 28 kg / 60 lb and no more than 135 kg / 300 lb) “CLEAR”
Clear the platform and press ENTER Zero Calibration
“-----------”
Wait without touching or shaking the scale until the zero calibration process
is finished Weight calibration
“Put XXX.X”
Load the platform with the required weight and press ENTER “-----------”
Wait without touching or shaking the scale until calibration process is
finished “DONE”/“CLEAR”
Remove weight from the platform Scale will reboot. “StArt” will appear
followed by the software version and “0.0”
For KG models only, wait until the scale resumes normal operation then
reset the calibration switch to the disabled position—toggle the calibration
push switch to ON (see above). Replace the access cover.
TROUBLESHOOTING
5.
Refer to the following instructions to check and correct any failure before contacting Customer Service.
SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION
Scale does not turn on 1. Dead Battery
2. Faulty electrical outlet
3. Bad Power Supply (Check LED
light at back of display module to
determine if adapter cord is
working)
1. Replace batteries
2. Use a different outlet
3. Replace adapter
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 floor
4. Scale is out of calibration
1. Remove interfering object
from the scale
2. Ask the patient to get off the
scale, zero the scale and begin
weighing process again
3. Place the scale on a level floor
and begin weighing process
again
4. Check weight with known
weight value
The display shows “OVER” The load on the scale exceeds the capacity
(600 lbs / 272 kg)
Remove the excess weight and use the
scale according to its limits
The display shows “LO Bat”
message
The batteries are low. Replace batteries according to instructions