RICE LAKE 350-10-3M Dual Ramp Digital Wheelchair Scale User Manual

350-10-3M
Dual-ramp Digital Wheelchair Scale
Software Version 11525
Operation Manual

350-10-3M Dual Ramp Digital Wheelchair Scale

© Rice Lake Weighing Systems. All rights reserved.

Rice Lake Weighing Systems®  is a registered trademark of
Rice Lake Weighing Systems.

All other brand or product names within this publication are trademarks or registered trademarks of their respective companies.

All information contained within this publication is, to the best of our knowledge, complete and accurate at the time of publication. Rice Lake Weighing Systems reserves the right to make changes to the technology, features, specifications and design of the equipment without notice.

The most current version of this publication, software, firmware and all other product updates can be found on our website:
www.ricelake.com
Revision History
This section tracks and describes the current and previous manual revisions for awareness of major updates and when the updates took place.

medical manuals; software version 11525

Table i. Revision Letter History

Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com/training or obtained by calling 715-234-9171 and asking for the training department.
© Rice Lake Weighing Systems ● All Rights Reserved

Rice Lake continually offers web-based video training on a growing selection of product-related topics at no cost. Visit www.ricelake.com/webinars
Visit our website www.RiceLake.com

Introduction

The 350-10-3M dual-ramp digital wheelchair scale is a user-friendly, quality scale, designed for safe weighing of mobility challenged individuals. Movement compensation technology ensures sound, accurate weighments.
The scale is set up to use motion sensing technology, to determine actual weight of a moving patient. The weight can be displayed in pounds or kilograms. To obtain a tare weight, See Section 3.0 on page 6.
The wheelchair scale has a unique folding feature that enables easy transportation and simplifies assembly, avoiding the need for field wiring and recalibration. All that is required is to open the packaging and unfold the scale.
Manuals, resources and warranties are available from Rice Lake Weighing Systems website at www.ricelake.com/health
1.1 FCC Compliance
United States
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Canada
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.
1.2 Safety
Safety Definitions:
Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. Includes hazards that are exposed when guards are removed.
Indicates a potentially hazardous situation that, if not avoided, could result in serious injury or death. Includes hazards that are exposed when guards are removed.
Indicates a potentially hazardous situation that, if not avoided, could result in minor or moderate injury.
Indicates information about procedures that, if not observed, could result in damage to equipment or corruption to and loss of data.
General Safety
Do not operate or work on this equipment unless this manual has been read and all instructions are understood.
Failure to follow the instructions or heed the warnings could result in injury or death. Contact any Rice Lake Weighing Systems dealer for replacement manuals.
Failure to heed could result in serious injury or death.
Ensure every individual who operates or works with this unit has read and understands all safety information.
Do not transport the scale while someone is on the scale.
Do not allow minors (children) or inexperienced persons to operate this scale.
Do not use in the presence of flammable materials.
Do not use this product if any of the components are loose or cracked.
Do not use near water.
Do not use the scale on slippery surfaces, such as a wet floor.
Do not use this scale when a person’s body or feet are wet, such as after taking a bath.
Do not place fingers into slots or possible pinch points.
To avoid cross contamination, the scale should be cleaned regularly.
Prior to cleaning, make sure the scale is disconnected from the power source.
People with disabilities, or who are physically frail, should always be assisted by another person when using this scale. Do not drop the scale or subject it to violent shocks.
Do not jump on the scale.
For accurate weighing, the scale must be placed on a flat, stable surface.
Operating at voltages and frequencies other than specified could damage the equipment.
Avoid contact with excessive moisture.
Do not make alterations or modifications to the scale.
Rice Lake Weighing Systems offers optional AC adapters; utilizing an adapter not supplied by Rice Lake Weighing Systems voids all warranties and approvals.
Weight exceeding the maximum capacity may damage the scale.

Assembly

Use the following information to unpack and set up the 350-10-3M dual-ramp digital wheelchair scale.
2.1 Unpacking
Place the unopened box in an open area that has ample room for unpacking the scale.
The 350-10-3M digital wheelchair scale box is bulky, so two people are recommended for unpacking.
Using scissors or a box cutter, cut the strapping bands that secure the box together. Immediately after opening the box, visually inspect the scale to ensure all parts are included and undamaged. If parts were damaged in shipment, notify Rice Lake
Weighing Systems and the shipper immediately.
Parts contained in the shipping box include:

• Scale
• Manual
• AA batteries (6)
• Scale feet (4)

2.1.1 Repacking
Retain the packaging for use in the event that the scale must be returned or moved. The product must be properly packed with sufficient packing materials. Whenever possible, use the original carton and packing materials when shipping the scale back.
Damage caused by improper packaging is not covered by the warranty.
2.2 Scale Setup
Move the scale into the area where the weighing process will occur. Place the scale on a hard, level surface for the most accurate weighments. Placing the scale on thin carpeting is not recommended.
Rice Lake Weighing Systems recommends using two people for lifting the scale and to use proper lifting techniques to prevent injury.
1.Using two people, remove the scale out of the packaging material that it came in by lifting the scale out of the box by the scale base.
Do not lift the scale out of the box by its handle as this can cause the hinges to break or affect the scale operation.
2. Gently set the scale base down to the floor.
2.2.1 Attaching Feet to the Scale
The 350-10-3M digital wheelchair scale comes with four feet that must be attached to the scale base for proper operation. The four feet are located in the parts box in the original shipping box. Use the following steps to attach the feet to the scale.

1. Tip the scale onto it’s side on a level surface so the scale base is accessible.
   When tipping the scale, be cautious of surroundings to prevent potential injuries.
   

2. Rotate the four round feet clockwise into the scale base until secure as shown in Figure 2-2. Feet are secure when no mechanical binding is present.

3. To prevent interference with the scale base, screw each foot counterclockwise four entire turns. The scale will not weigh properly if the feet restrict the scale platform.

4. Gently set the scale base down on to the floor. Ensure there is minimal clearance between the scale base and the floor without having the scale base contacting the floor.
   

5. It is important to ensure that the scale is completely level. Gently press down on all corners of the scale base to ensure that there are no high spots or rocking of the scale base.

6. Adjust feet as needed to level the scale base.

An uneven base will produce inaccurate weight readings.
2.2.2 Hinge Assembly

1. Loosen the knobs by rotating counterclockwise and set the scale arms upright.
   

2. Tighten the two hinges on the 350-10-3M digital wheelchair slcale by tightening the two knobs by rotating clockwise to secure the handrail mounted indicator.

2.2.3 Insert Batteries
The six AA batteries supplied with the scale provide an average of 25 hours of continuous use.
To install the batteries:

1. Turn thumbscrew counterclockwise then remove battery cover.

2. Insert batteries into the battery chamber as illustrated.
   

3. Put the cover in place and turn the thumbscrew clockwise to secure.

Remove the batteries prior to storing if the product is not going to be used for an extended period of time.
If the LO BAT indicator activates, for accurate weighing, replace the batteries or connect the scale to an AC power source as soon as possible.
2.2.4 Power Connection
An optional AC power adapter can be used when a power outlet is available.
Only use power adapters supplied by or purchased from Rice Lake Weighing Systems. The use of a power adapter not from Rice Lake Weighing Systems voids the warranty.
The battery annunciator on the display turns off when using an AC power connection.
The brightness of the backlight is reduced to 60% when using battery power.

Operation

This section describes the front panel and includes procedures for operation of the scale. 3.1 Key Descriptions
The display has 10 front panel keys. Key functions are described in the table below.
The front panel keys are very sensitive, so only a gentle press is required.

Key| Name|

Function

---|---|---

__

| On/Off| Powers the scale on or off

__

| Print LB/KG| Sends data out from the RS-232 port; Allows to toggle between kilograms and pounds providing that it is enabled in  Configuration mode; Cannot toggle while in the BMI mode
__| Zero| Only functions if the current weight is stable and less than 2% of the capacity of the scale. Anything over 2% requires a recalibration
__| Hold Release| Displays most current weight value on the display and holds that value when the patient is off the scale. A second press releases the weight value. Not active while in BMI mode
__| BMI| Pressing the BMI key enables access to the BMI (Body Mass Index) mode (defaults when scale is turned on). The patient is gets on the scale, weight stabilizes and press the BMI key. The display then asks for the patient height to calculate out the patient BMI.
| TARE| Used to remove the weight initially of anything on the scale that shouldn’t be included in the total weight of the patient on the scale
| CLEAR| When using the BMI function, the display looks for a height entry. Pressing Clear changes this entry back to 190.0 cm (default) or 5 ft, 7.5 in.Once BMI is displayed, pressing the Clear key exits BMI
| ENTER| Used to accept height in BMI mode; accepts the value of the parameter last entered and moves to the next stage Pressing and holding Enter during startup will display ID. This is the first setup on entering into configuration mode
__| Up Arrows| Adjusts the value of the flashing digit/number
Adjusts height input (0.5 in/0.5 cm) while in BMI mode
__| Down Arrows| Adjusts the value of the flashing digit/number
Adjusts height input (0.5 in/0.5 cm) while in BMI mode

Table 3-1. Key Functions
3.2 Weighing
Use the following steps to weigh.

1. Press to turn on the scale. 0.0 appears on the display along with the ZERO annunciator.
2. Place the patient on the scale. The patient’s weight is displayed, the LOCK annunciator is on and the indicator beeto indicate the end of the weighing process.
3. Press to change the display from lb to kg and vice-versa.
4. Press and hold until OFF displays to turn off the scale.

3.3 Hold/Release Function
Use the following steps to use the Hold/Release function.

1. Press to turn on the scale. 0.0 prompts along with ZERO on the display.
2. Press once the patient’s weight stabilizes. The patient’s weight and the HOLD and LOCK annunciators remain on the display when the patient is off the scale.
3. Press again to return the scale to zero.

Pressing will not work while using Hold/Release function.
Pressing prior to the patient getting on the scale will also hold the weight display.
3.4 Preset Tare
Use the following steps for the Preset Tare function prior to patient weighing if additional items are being used by the patient.

1. Press to turn on the scale. 0.0 appears on the display along with the ZERO annunciator.

2. Place additional item(s) on the scale.

3. Press until the display returns to 0.0 and NET annunciator appears on the display.

4. Remove additional item(s) from the scale. The weight displays with a negative symbol to the left of it.
   Not removing the additional item(s) prior to patient weighing will also work.

5. Position the patient and additional item(s) on the scale. The display identifies the patient weight. The NET annunciator
   is still active. The weight of the additional item(s) remains stored in memory for the duration of this weigh in.

6. To cancel the tare weight, remove patient from the scale and press until NET disappears from the display and the display turns back to 0.0 and GROSS appears.

Tare weight is also canceled when the scale is turned off.
3.5 Toggle Tare
Use the following steps to use the Toggle Tare function when the additional item to be weighed is known.

1. Press when the scale is empty and 0.0 displays. The default values prompts while 0.0 is flashing on the display (default is programmed to be 33.0 lb/15.0 kg).
2. Use __ and __ to adjust the value. Press to start the tare function. The NET annunciator turns on instead of the GROSS annunciator.

3.6 Using the Body Mass Index (BMI) Function
Use the following steps in determining the BMI.
3.6.1 LB Mode

1. Ensure that the scale is at zero.
2. Place the patient on the scale to obtain a weight. The LOCK annunciator appears on the display.
3. Press __. The BMI and FT/IN annunciators appear on the display and a default height value of 5 feet – 7.5 inch (5 – 07.5) is flashing.
4. Use __ and __ to adjust the height value.
5. Press .
6. The BMI value and BMI annunciator are shown on the display. Press to return to the Weighing mode and the BMI function will be turned off.

3.6.2 KG Mode

1. Ensure that the scale is at zero.
2. Place the patient on the scale to obtain a weight. The LOCK annunciator appears on the display.
3. Press __. The BMI and CM annunciators appear on the display and a default height value of 170.0 cm (170.0) is flashing.
4. Use __ and __ to adjust the height value.
5. Press .
6. The BMI value and BMI annunciator are shown on the display. Press to return to the Weighing mode and the BMI function will be turned off.

Troubleshooting

Refer to the following table to check and correct any failure before contacting service personnel.

Symptom

| Possible Cause|

Corrective Action

---|---|---
Scale does not turn on| Dead batteries| Replace batteries or connect to AC power
Faulty electrical outlet| Use a different electrical outlet
Bad power supply| Replace 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 scale is level and begin the weighing process again
Scale is out of calibration| Check the weight with a certified calibration weight
Scale base is touching floor during a weighment| Adjust height of feet so fingers can slide between the base of scale and the floor all the way around the platform
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 specifications
The display shows LO Bat message| The battery is low| Replace batteries
The display shows E and Err 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 usable- one bar left on indicator display
E4U| Battery low and unstable – no bars left on indicator display
E11| CAL| Calibration Error – recalibrate scale
Err 1| Load cell cable may be plugged into wrong connection port| Ensure cable is connected to the load cell connection port. Note: Load cell connection point is located underneath the curved plastic cover of the indicator. Remove four back retaining screws, remove curved back cover to access load cell connection point.
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 cell mechanical surroundings and ensure nothing is contacting the load cell and that the cables are properly welded
Err 7| Scale isn’t moving| Make sure feet are installed on the scale. Turn the feet all the way in and then back them out three full turns, then level the scale
SAT| Damaged load cell cable| Replace load cell cable
Load cell cable may be plugged into wrong connection port| Ensure cable is connected to the load cell connection port. Note: Load cell connection point is located underneath the curved plastic cover of the indicator. Remove four back retaining screws, remove curved back cover to access load cell connection point.

Table 3-2. Troubleshooting Table

RS-232 Communication

The unit comes with an RS-232 port that enables weight data to be transmitted to other equipment, such as a computer or printer. The RS-232 cable with DB-9 connector (PN 100719) is available from Rice Lake Weighing Systems. That connection is shown in USB Connection section on the next page.
The RS-232 parameters are:

• 9600 baud (selectable in the programming mode)
• 8 data bits
• 1 stop bit
• no parity
• no handshaking

There are three methods of communication:

• Push-button keypad print
• Standard remote protocol
• Escape protocol

4.1 Push-button Keypad Print
With a stable, in-range weight, press and hold for at least three seconds, or until the scale emits two quick beeps.
If the scale does not beep after five seconds, release as the weight was either in motion or out of range.
If displaying weight and not BMI, the scale will send out the following 21 character string:
xxxxxxxxxuummmmm

Table 4-1. Print Format Tokens
Example:
-10 Lb net = -10.0lbNet
10 Lb gross = 10.0lbGross
• The scale will send out the following data while in BMI mode (displaying the BMI value):

Table 4-2. BMI Data
4.2 USB Connection
The scale has the capability of connecting to a Windows® computer (PC) using a USB cable (not included) and a terminal emulation program. A terminal emulation program allows the transfer of data between the scale and PC using a serial port.
Apple® and Macintosh® computers are unable to transfer the necessary data to the scale. Only use a PC for data transfer.
Connecting software and downloads should always be addressed by the IT department for safety reasons and can vary depending on what type of computer platform is being used.
Consult the IT department if driver protections are preventing the use of the USB driver. Driver protections may need to be temporarily disabled on Windows 10 or later computers to allow for the installation of the USB driver.

1. Connect the scale’s indicator to a PC using a USB-Type B to USB-Type A cable (not included).

2. Turn the indicator on.
   In most cases, the PC should find the driver and automatically configure the driver when the scale is plugged into a USB port.

3. Open a terminal emulation program, such as Advanced Serial Port Terminal, pUtty or Hercules (used in this example).

4. Connect to the serial port assigned by the PC (COM5 in example). This can be found in Device Manager. Once selected, press Open.
   5. With weight on the scale, press and hold the Print button on the indicator for three seconds. The patient’s weight is sent to the PC.
   

Maintenance

The following section provides instructions for maintaining and cleaning the unit.
Do not immerse the scale in cleaning or other liquid solutions.
Do not use Isopropyl alcohol or other solutions to clean the indicator display surface.
5.1 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 a qualified service personnel.
Go through the following steps for basic maintenance.

• Check the overall appearance of the entire scale for any obvious signs of damage
• Inspect the condition of the AC power adapter cord for cracking, fraying or for broken or bent prongs

5.2 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.

• 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
• Do not immerse the scale into cleaning or other liquid solutions
• Do not use Isopropyl alcohol or other solutions to clean the display surface

Specifications

Power
120 VAC – 9 VDC – 60Hz / 230 VAC – 9 VDC – 50Hz
Battery Type
6 AA size Alkaline batteries
Battery Use
25 hours continuous use
Automatic power-off can be configured
Data Communications
RS-232 with RJ-45 jack
USB Connection
Selectable baud rate, default – 9600
8 bits
No parity
1 stop bit
No handshaking
Environmental
Operating Temperature: 50°F to 95°F (10°C to 35°C)
Storage Temperature: 32°F to 122°F (0°C to 50°C)
Humidity: 85% relative humidity
Capacity and Graduation
1000 lb x 0.2 lb (453 kg x 0.1 kg)
Dimensions
Platform Dimensions: 48.5 in W x 29.5 in L x 3 in H
Certifications and Approvals
E113986

© Rice Lake Weighing Systems Specifications subject to change without notice.
230 W. Coleman St. • Rice Lake, WI 54868 • USA
U.S. 800-472-6703 • Canada/Mexico 800-321-6703 • International 715-234-9171 • Europe +31 (0)26 472 1319
August 17, 2022
www.ricelake.com
PN 194980 Rev A
Visit our website www.RiceLake.com

References

• Rice Lake Weighing Systems
• Health Scales | Rice Lake Weighing Systems
• Training | Rice Lake Weighing Systems
• Videos and Webinars | Rice Lake Weighing Systems
• Rice Lake Weighing Systems
• Rice Lake Weighing Systems
• Rice Lake Weighing Systems

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