1380 Legion Road
Detroit Lakes, MN 56501
Toll Free: 1.800.725.7761
www.patientlift.com
Hanging and Dual Display Scale
Calibration Instructions
PC450/HD450
1.
Should calibration be necessary, all that is required is a 25 Lb precision weight. Do not use
packaged goods, fitness weights or other items that say they weigh 25 Lbs. Failure to use a
precision weight may cause the scale to display an inaccurate weight. Using a certified
weight is the method preferred. 25 Lb certified weights are available from SMT Health
Systems.
2.
When calibrating scale, have the beam positioned in the middle of its stroke.
3.
To enter calibration mode, push
“
ON/ZERO
”
button.
4.
While holding the
“
ON/ZERO
”
button, press and hold the
“
LB/KG
”
button. After ap-
proximately 3 seconds the message on the display will change from
“
ZERO
”
to
“
CAL
”.
Release both and the display will show
“
C O
”.
5.
Hang strap or sling that will hold calibration weight on the hanger hooks. If using a sling,
make sure it is empty. Push the
“
ON/ZERO
”
button and release. The display will count
down from
“16”
to
“0”.
When finished the display will show the message
“
C
25”.
6.
Now hang 25 Lb calibration weight on strap which you previously attached to the hanger
(step 4, above) or place it in the sling and permit the scale to stabilize. (Failure to stabilize
the unit may cause the scale to display an inaccurate weight –
see below.)
7.
Push
“
ON/ZERO
”
button again. Scale will count down from
“16”
to
“0”
as before and
then the display should read
“25”
, which is the weight of the calibration weight.
Calibration is now complete.
Do not touch lift while it is counting down
.
8.
Remove the 25 Lb precision weight, stabilize the sling or strap, and press the
“
ON/ZERO
”
button to zero the scale. The scale is ready to use.
Note:
To stabilize the unit, weight must be centered directly below the beam.
Do not side load the scale.
Permit the weight to stop bouncing or swinging.
Switching between LBS. and KG. may trigger a need to recalibrate.
Call SMT Customer Service if you have any questions. 800
-
725
-
7761
11
