Rice Lake 540-10 Series User manual

113806
Digital Chair Scale
540-10 Series
Software Revision 11387
Operation Instructions
To be the best by every measure

Contents
1.0 Introduction.................................................................................................................................. 1
2.0 Scale Assembly ........................................................................................................................... 2
2.1 Unpacking Your Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 Repacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.3 Setting Up Your Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.4 Optional Footrest Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.5 AC Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.6 Getting Ready to Weigh a Patient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.0 Scale Operation ........................................................................................................................... 6
3.1 Weighing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Using the Body Mass Index (BMI) Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Using the Tare Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.0 RS-232 Communication............................................................................................................... 9
4.1 Pushbutton Keypad Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.0 Troubleshooting and Testing ..................................................................................................... 10
6.0 Maintenance .............................................................................................................................. 11
6.1 Basic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.0 Digital Chair Scale Specifications ............................................................................................ 12
For More Information ............................................................................................................................. 13
Digital Chair Scale Limited Warranty.................................................................................................... 14
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com or obtained
by calling 715-234-9171 and asking for the training department
© 2010 Rice Lake Weighing Systems. All rights reserved. Specifications subject to change without notice.
Series 540-10, Software revision 11387
November 2010

ii Digitial Chair Scale Operation Instructions
Rice Lake continually offers web-based video training on a growing selection
of product-related topics at no cost. Visit www.ricelake.com/webinars.

1
1.0 Introduction
The Rice Lake Digital Chair Scale is an easy to handle, quality scale designed for safe and convenient weighing
of patients who have a difficult time standing on a conventional scale. Advanced motion-sensing technology
compensates for any movement during the weighing process, ensuring sound, accurate weighing information.
The scale includes a durable rigid plastic (standard model) or a padded seat (premium model). Both models come
with arm supports that fold up for easy entry or exit. Also included are two large wheels and a handrail for easy
mobility. An optional footrest is available for both models.
This manual can be viewed and downloaded from the Rice Lake Weighing Systems web site at
www.ricelake.com/health. Technicial information on these products and other medical products are
available on the Rice Lake Weighing Systems web site.
Rice Lake Weighing Systems is an ISO 9001 registered company.
Standard - Model 540-10-1 Premium - Model 540-10-2
Figure 1-1. Digital Chair Scale (standard model and premium models shown)

2Digitial Chair Scale Operation Instructions
2.0 Scale Assembly
2.1 Unpacking Your Scale
Place the unopened box in an open area that has ample room for unpacking the scale.
Parts contained in the shipping box include:
• The scale
• This manual
• Small box containing the AC adaptor and RS-232 cable
2.2 Repacking
If the Digital Chair Scale must be returned for modification, calibration or repair, it must be properly packed with
sufficient packing materials. Whenever possible, use the original carton when shipping the scale back.
NOTE: Damage caused by improper packaging is not covered by the warranty.
2.3 Setting Up Your Scale
Use the following steps to set up the Rice Lake Digital Chair Scale.
1. Using two people, remove the ready assembled chair out of its packaging.
2. Visually inspect the chair scale to ensure the scale is undamaged.
2.4 Optional Footrest Installation Instructions
The Rice Lake Digital Chair Scale comes in two models and both models have an optional fold-up footrest
offering easy access and exit.
Optional Footrest
Figure 2-1. Digital Chair Scale Shown with Optional Footrest
The following steps instruct the user on how to install the optional footrest.
1. Remove the plastic covering from the chair scale by removing the three screws using a 7mm Allen key

Digitial Chair Scale Operation Instructions - Scale Assembly 3
and set those screws aside.
Remove all three screws
Remove plastic covering
Figure 2-2. Remove Screws and Plastic Covering from Chair Scale
2. Take the chair scale footrest and align the screw holes on the footrest with the three holes on the chair
scale. Use the three screws and tighten using an Allen key again.
Tighten screws with an Allen
key
Figure 2-3. Tighten Screws with an Allen Key
3. The footrest can then be flipped up or down.

4Digitial Chair Scale Operation Instructions
2.5 AC Power Connections
The Digital Chair Scale has a 120 VAC adaptor or 230 VAC adaptor to use when power is readily available. The
AC power adaptor plugs into the back of the indicator as shown in Figure 2-4.
LED indicator light
illuminates from red to
green when charged.
Connect the AC power
source here.
RS-232 Port
connection
Store the 230 VAC
adaptor here when not
in use
Store the 120 VAC
adaptor here when not
in use
Back cover to indicator
Retaining Screws
Figure 2-4. LED Light Location
The AC adaptor, when not in use, plugs into the back housing of the indicator. Figure 2-4 shows that location.
The Digital Chair Scale is capable of running its internal sealed lead-acid rechargeable battery if no additional
power source is available. Battery life is approximately 75 hours. If the LO Bat indicator is showing on the
display, recharge the battery or connect the scale to an AC power source as soon as possible for accurate
weighing.
Battery Charging
When the AC adaptor is connected to a power source, the rechargeable battery goes into recharge mode.
NOTE: To maintain battery longevity we recommend you charge it on a regular basis rather than waiting until it is fully
discharged.
The LED indicator light on the back of the scale housing will illuminate red during the charging period, and
change over to green when the battery becomes fully charged.

Digitial Chair Scale Operation Instructions - Scale Assembly 5
2.6 Getting Ready to Weigh a Patient
Once the scale is properly unpacked and set up, and prior to weighing a patient, step on the scale to check the
scale that all functions are working correctly. The scale is calibrated from the factory so simply turn on the scale
and step on the scale to get a weight reading. Press the REWEIGH key again to verify that weight.
Figure 2-5. Press the Reweigh Key to Verify Weight

6Digitial Chair Scale Operation Instructions
3.0 Scale Operation
The display has various front panel keys. They are shown below.
Figure 3-1. Front Panel Display Keys
Table 3-1. Key Functions
Key Name Function
ON-OFF/ZERO ON-OFF - Switches the scale on or off.
ZERO - Clears weight off the scale and returns it back to zero.
BMI/TARE BMI - Enables the user to access the BMI (Body Max Index) function.
TARE - Used to subtract a weight off the scale ie: wheelchair.
REWEIGH Allows you to reweigh a patient without having them leave the scale.
Kg-Lb/PRINT Allows the user to toggle between kilograms and pounds.
Press this key to print a weight if connected to a printer.
#AUTION
The keys on the front panel display are very sensitive so only a gentle pushing motion is required to
obtain results.
The scale has the capability of performing different operations beyond just calculating weight. The various
operating instructions are described below.
3.1 Weighing
Use the following steps to weigh a person.
1. Press the On-Off/Zero key to turn on the scale and 0.0 will appear on the display.
2. If the optional footrest is attached to the chair scale, make sure the footrest is folded up and out of the
way. Once the patient is seated, fold the footrest back down and have the patient place their feet squarely
in the center of the footrest and not on the floor.
3. The display shows WEIGH, then the person’s weight, and beeps to indicate the end of the weighing
process.
4. To ensure an accurate weighing, press REWEIGH key.
5. To change the display from Kg to Lb and vice-versa, press the Kg-Lb key.
6. The scale is set to lock in the weight when the weighing process is complete. The weight will remain on
the display even after the patient steps off the scale. To clear the weight, press the On-Off/Zero key.
7. If the optional footrest is attached, fold up the footrest so that the patient can safely exit out of the scale.
8. To turn off the scale, press and hold the On-Off/Zero key until OFF appears on the display.