Rice Lake RL-350-2 User manual

114724
Rice Lake Bariatric Wheelchair
Wheelchair Scale
Software Revision 11387
Operation Manual
To be the best by every measure

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Contents
1.0 Introduction and System Overview.............................................................................................. 1
2.0 Scale Setup.................................................................................................................................. 2
2.1 Unpacking Your Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 Repacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.3 Setting Up Your Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.4 Scale Feet Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.5 Cable Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.0 Indicator Setup ............................................................................................................................ 5
3.1 Load Cell Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 AC Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 6
3.3 Getting Ready to Weigh a Patient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.0 Scale Operation ........................................................................................................................... 8
4.1 Weighing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.2 Using the Body Mass Index (BMI) Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3 Using the Tare Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.0 RS-232 Communications ........................................................................................................... 11
5.1 Pushbutton Keypad Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.0 Maintenance .............................................................................................................................. 12
6.1 Transporting & Storing the Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.0 Rice Lake Bariatric Wheelchair Scale Specifications ............................................................. 14
7.1 Indicator Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
For More Information ..............................................................................................................................15
Rice Lake Bariatric Wheelchair Scale Limited Warranty ..................................................................... 16
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
October 2010 Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America
Specifications subject to change without notice.
Rice Lake Weighing Systems is an ISO 9001 registered company

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

Introduction and System Overview 1
1.0 Introduction and System Overview
The Rice Lake Bariatric Wheelchair Scale is a heavy-duty scale that easily accommodates wheelchairs with its
large platform size and easy-access ramp in either a single ramp (RL-350-1) or dual ramp model (RL-350-2). It
provides exceptional performance in applications where typical wheelchair scales are not large enough to meet
the needs of the patient.
The Rice Lake Bariatric Wheelchair Scale is a fully electronic, low profile floor scale that measures 34 in x 34 in
(.86 m x .86 m), and has a capacity up to 1000 lbs (500 kg). The Rice Lake Bariatric Wheelchair uses four
corner-mounted, alloy steel shear beam load cells, with the cells recessed into the frame channels for protection.
The Rice Lake Bariatric Wheelchair Scale offers two integral handles and wheels for ease of portability.
Load cell cables are run through the main channels, and held down with replaceable cable ties near each corner,
eliminating the possibility of cable damage in portable applications.
The Rice Lake Bariatric Wheelchair Scale comes equipped with a anti-slip rubber surface on the scale platform
and a large 1" LCD indicator display and a 120 VAC or 230 VAC adaptor to use when power is readily available.
It is also capable of operating on the internal sealed lead-acid rechargeable battery when no power source is
available.
Dual Ramp 
Model (RL-350-2)
Single Ramp Model with
Wheel Stop (RL-350-1)
Figure 1-1. Rice Lake Bariatric Wheelchair Scale
The scale is set up to use motion sensing technology, to determine actual weight of a moving patient. The weight
can be displayed in either pounds or kilograms and you can enter a tare weight. The Scale Operation Section on
page 8 of this manual explains the scale operation and how to obtain a tare weight.
This manual can be viewed and downloaded from the Rice Lake Weighing Systems web site at
www.ricelake.com/health. Technical 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.

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2.0 Scale Setup
The following sections describe the correct installation procedures when installing the Rice Lake Bariatric
Wheelchair Scale.
2.1 Unpacking Your Scale
The Rice Lake Bariatric Wheelchair Scale comes shipped in a wooden two piece box. Place the unopened box in
an open area that has ample room for unpacking the scale.
Recommended tools needed to set up your scale include:
• Scissors or box cutters
• Small Phillips screwdriver
Using scissors or a box cutter, cut the strapping bands that secure the box together. Lift off the top cover.
Immediately after opening the box, visually inspect your scale to ensure all parts are included and undamaged.
Parts contained in the shipping box include:
• Rice Lake Bariatric Wheelchair Scale
• This manual
• Parts box which contains the indicator display
2.2 Repacking
If the Rice Lake Bariatric Wheelchair Scale must be returned for modification, calibration or repair, it must be
properly packed with suffiencient packing materials. Whenever possible, use the original box when shipping the
wheelchair scale 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 Bariatric Wheelchair Scale.
1. Locate the users manual and set aside as it will provide instructions on the proper scale set up.
2. Using two people, remove the scale off of the shipping platform that it came in as shown in Figure 2-1.
Figure 2-1. Un Box the Scale
3. Move the scale into the area where the weighing processs will occur. It’s recommended to place the scale
on a hard, level surface for the most accurate weighments. Thin carpeting is fine but not recommended.

Scale Setup 3
4. Stand the scale on its side so that the plastic packaging material can be removed.
Figure 2-2. Remove Plastic Wrapping off of Scale
2.4 Scale Feet Adjustment
The scale feet are shipped attached to the scale. Adjustments need to be made in order for the scale to sit properly
on the floor.
1. There must be adequate clearance between the scale base and the floor so screw each foot out counter
clockwise two full turns. This will ensure that there is enough clearance between the scale base and the
floor.
Figure 2-3. Backing Out the Scale Feet
2. Carefully unwrap the load cell cable located on the underside of the scale. It will run out the underside of

4Rice Lake Bariatric Wheelchair Scale Operation Manual
the scale.
Figure 2-4. Unwrap the Cable from the Underside of the Scale
3. Gently set the scale base down to the floor. There should be minimal clearance between the scale base
and the floor without having the scale base actually touching the floor.
NOTE: By not having clearance around the scale base will create inaccurate weighments.
4. It’s also important to make sure 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.
NOTE: An un-level base will produce innacurate weight readings.
2.5 Cable Connections
Ten feet of 4-wire cable to connect the scale to the weight indicator is supplied with each scale.
NOTE:The cable is pre-installed from the factory.
The cable must be routed to the indicator in a manner that will protect the cable from damage. Cabling should
exit the underside of the scale on the portable wheel side of the scale and not the ramp side(s). When planning
cable routing, leave a loose coil of excess cable under the scale to facilitate future lifting of the scale for servicing
or cleaning.
Cable should
exit the
underside of
the scale on
the wheeled
side of scale.
Figure 2-5. Indicator Cable Exiting the Side of the Scale Platform
5. When the interface cable is protected and in its final position, complete connections to the indicator as
described in Section 3.1.

Indicator Setup 5
3.0 Indicator Setup
To protect the indicator during transit, the indicator is shipped in a separate box inside the main shipping
container. The following sections apply to indicator connections and setup.
3.1 Load Cell Connections
Your scale comes with ten feet of load cell cable which comes from the bottom of the scale (shown in
Figure 3-1). The load cell cable must be connected to the indicator display.
To gain access to the load cell connection point, do the following:
1. Unscrew and remove the tilt stand bracket from the indicator.
Unscrew tilt stand knobs
and remove tilt stand from
indicator
Figure 3-1. Remove Tilt Stand From Indicator
2. Remove the four back retaining screws as shown in Figure 3-2 and remove the back cover to the
indicator.
Figure 3-2. Remove Back Cover of Indicator

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3. Figure 3-3 illustrates where the load cell connection point is located.
Load Cell Connection Point
Figure 3-3. Load Cell Connection Point
Plug the end of the load cell cable into the load cell connection point shown in Figure 3-3. You will hear a "click"
when the load cell cable has been properly seated into the connection point.
Replace the back cover on the indicator with the four back retaining screws and re-attach to the tilt stand.
3.2 AC Power Connections
The Rice Lake Bariatric Wheelchair 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 3-4.
Connect the AC power
source here
LED indicator light
illuminates from red to
green when charged
Store the 120 VAC
adaptor here when
not in use
RS-232 port
connection
Store the 230 VAC
adaptor here when
not in use
Back cover to
indicator
Figure 3-4. LED Light Location
The AC adaptor, when not in use, plugs into the back housing of the indicator. Figure 3-4 shows that location.
The Rice Lake Bariatric Wheelchair 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.