Rice Lake RL550 Digital Chair Scale Technical and Operating Instructions - Manual (Page 29)

Rice Lake 550 Digital Chair Scale - Troubleshooting and Testing 25
8.0 Troubleshooting and Testing
Refer to the following to check and correct any failure before contacting service personnel.
Table 8-1. 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 E messages as detailed below.
E06 Identifier - ADC AD too high
E07 AD too low
E10 Overload Scale has been overloaded. Remove load from scale.
E4L BAT
Battery low but still useable
—
1 bar left on the indicator display.
E4U
Battery low and unstable
—
no bars left on the indicator display.
E11 CAL
Calibration Error
—
recalibrate the scale again.
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.
SAT Damaged load cell cable Replace load cell cable.
9.0 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.
9.1 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.
2. Inspect the condition of the optional AC adapter for cord cracking or fraying or for broken or bent
prongs.
9.2 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 in cleaning or other liquid solutions.
3. Do not use isopropyl alcohol or other solutions to clean the display surface.