Digital Chair Scale Operation Manual - Troubleshooting and Testing
17
6.0
Troubleshooting and Testing
Refer to the following instructions to check and correct any failure before contacting service personnel.
Table 6-1. Troubleshooting Table for the Rice Lake Scale Line
Symptom
Possible Cause
Corrective Action
Scale does not turn on
Dead battery
Connect the scale to a power source.
Faulty electrical outlet
Use a different electrical outlet.
Bad power supply
Replace optional adapter.
Questionable weight or the scale
does not zero
External object is interfering with the
scale
Remove the interfering object from the scale.
Display did not show 0.0 before
weighing
Help the patient off the scale, zero the scale and
begin the weighing process again.
Scale is not placed on a level floor
Ensure the scale is level and begin the weighing
process again.
Scale is out of calibration
Check the weight with a known weight value.
The display shows a
STOP
message The load on the scale exceeds the
capacity of the scale
Remove the excess weight and use the scale
according to manufacture’s specs.
The display shows
LO Bat
message
The battery is low
Recharge the battery.
The display shows Err message as detailed in the table below
Err 2
Low saturation state (low A/D)
The load cell is not connected properly. Check
the cables and mechanical connections. If the
problem persists, replace the set of load cells.
Err 3
High saturation state (high A/D)
See Err 2
Err 6
Unstable weight. Cannot calibrate
Check the load cells’ mechanical surroundings
and see that nothing touches them and that the
cables are properly welded.
6.1
Maintenance
The following section provides instructions for maintaining and cleaning the Rice Lake line of scales.
Maintenance operations other than those described in this section should be performed by qualified service
personnel.
6.1.1
Basic Maintenance
Before the first use of the scale and after periods of non-use, check the scale for proper operation and function. If
the scale does not operate correctly, contact qualified service personnel.
Go through the following steps for basic maintenance.
1. Check the overall appearance of the entire scale for any obvious signs of damage, abuse, etc.
2. Inspect the condition of the optional AC adapter for cord cracking or fraying or for broken or bent prongs.
6.1.2
Cleaning
Proper care and cleaning is essential to ensure a long life of accurate and effective operation. Before beginning
the cleaning process, disconnect the scale from the AC power source.
1. Clean all external surfaces with a clean, damp cloth or tissue. Mild soap and water solution may be used.
Dry with a clean soft cloth.
2. Do not immerse the scale into cleaning or other liquid solutions.
3. Do not use Isopropyl alcohol or other solutions to clean the display surface.
