Rice Lake Mechanical Physician Scale
Model RL-MPS-40
Operation Manual
PN 186212 September 20, 2017
An ISO 9001 registered company
© 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
Contents
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.
Contents
1.0 Introduction.................................................................................................................................................. 1
1.1 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.0 Assembly....................................................................................................................................................... 2
2.1 Scale Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1.1 Pillar Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1.2 Steelyard Rod Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1.3 Height Rod Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Wheel Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.0 Counterpoise Weights ................................................................................................................................. 7
4.0 Maintenance and Troubleshooting............................................................................................................. 8
4.1 Zero Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.2 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
© Rice Lake Weighing Systems ● All Rights Reserved i
Rice Lake Mechanical Physician Scale Model RL-MPS-40
Rice Lake continually offers web-based video training on a growing selection
of product-related topics at no cost. Visit www.ricelake.com/webinars
ii Visit our website www.RiceLake.com
Introduction
DANGER
WARNING
CAUTION
IMPORTANT
WARNING
1.0 Introduction
The Rice Lake Mechanical Physician Scale (RL-MPS-40) is ideal for use in health clinics and doctors’ practices for height and
weight measurement.
The scale is durable, having a sturdy enameled steel body, removable slip resistant cover, a retractable aluminum height rod
d rear wheels. This manual guides the user through basic instructions on pillar assembly, wheel installation, height rod
an
installation and the zero adjustment of the scale.
Manuals and Firmware/Software are available for viewing and/or downloading from the Rice Lake Weighing Systems
website at
Warranty information can be found on the website at www.ricelake.com/warranties
1.1 Safety
Safety Signal Definitions:
www.ricelake.com/manuals
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 i
Weighing Systems dealer for replacement manuals.
Failure to heed could result in serious injury or death.
Do not transport the scale while someone is standing on it.
To avoid cross contamination, the scale should be cleaned regularly.
Avoid contact with excessive moisture.
Do not allow minors (children) or inexperienced persons to operate this scale.
Do not jump on the scale.
Do not place fingers into slots or possible pinch points.
Do not use in the presence of flammable materials.
Use the scale only to determine weight of pe
Do not make alterations or modifications to the scale.
People with disabilities, or who are physically frail, should always be assisted by another person when using this scale.
Do not use the scale on slippery surfaces, such as a wet floor.
Do not use this scale when the body/feet are
Weight exceeding the maximum capacity may damage the scale.
Do not drop the scale or subject it to violent shocks.
For accurate weighing, the scale must be pla
ople while standing.
wet, such as after taking a bath.
ced on a flat, stable surface.
n injury or death. Contact any Rice Lake
© Rice Lake Weighing Systems ● All Rights Reserved 1
Rice Lake Mechanical Physician Scale Model RL-MPS-40
IMPORTANT
Weight Beam
Height Rod
Pillar
Platform/Scale Base
Rear Wheels
Frame
Poise Weight (lower large)
Poise Weight (upper small)
2.0 Assembly
Place the unopened shipping container in an open area with room for unpacking the scale.
When unpacking the RL-MPS-40,
damage. If any parts were damaged in shipment, notify Rice Lake Weighing Systems and the shipper immediately.
ensure that all assembly parts are accounted for. Check the RL-MPS-40 for any visible
Figure 2-1. RL-MPS-40 Parts
The RL-MPS-40 must be properly packed with sufficient packing materials prior to being moved or shipped.
Retain the original shipping materials and container, if possible.
Damage caused by improper packaging is not covered by the warranty.
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2.1 Scale Assembly
Scale Base Ties
Cable Tie
Pillar - Small Face
Scale Base
The following tools are required to assemble the RL-MPS-40. Use the following sections to assemble the scale.
• Phillips head screwdriver
• Wrench (included)
2.1.1 Pillar Installation
1. Set the scale base on a hard level surface.
2. Remove the ties from the scale base and the cable tie that holds the steelyard rod from shifting during shipping.
Figure 2-2. Remove Ties
Assembly
3. Insert the pillar into the scale base assembly ensuring that the smaller face of the weight beam faces the scale base.
Figure 2-3. Install Pillar
4. Secure the pillar to the scale base using a Phil lips head screwdriver and eight bolts with washers.
Figure 2-4. Secure Pillar to Scale Base
© Rice Lake Weighing Systems ● All Rights Reserved 3
Rice Lake Mechanical Physician Scale Model RL-MPS-40
2.1.2 Steelyard Rod Connection
The steelyard rod is located inside the scale pillar. Once the pillar is attached to the scale base, the steelyard rod must be
attached to the bottom of the scale.
1. Lay the scale on a table. Ensure that the scale base ties have been removed.
Figure 2-5. Lay Scale on Table
2. Insert the hook end of the included wrench into the small hole in front of the steelyard rod. Pull the rod to connect it to
the scale base.
3. Push the long lever frontward, then hook the bearing of the steelyard rod on the pivot of the long lever.
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Figure 2-6. Connect Steelyard Rod to Scale Base
Figure 2-7. Steelyard Rod Connected
Assembly
IMPORTANT
Linkage Alignment Plug
Force Lever
Assembly Linkage
Figure 2-8. Linkage Underneath the Top Weigh Beam
4. Visually ensure the force lever assembly linkage is centered and properly aligned by loo king underneat h the top weigh
beam. Tip scale slightly if needed. The linkage must be free floating in order for the scale to w eigh properly.
5. Place the scale gently back on the floor, ensure all feet are out from under the scale location.
Ensure that the linkage is straight and free floating, if twisted it can cause weighing issues.
2.1.3 Height Rod Installation
Use the following steps to install the height rod.
1. Insert the slotted holes of the heigh
t rod onto the two hex-head screws on the front side of the pillar.
2. Use the wrench to tighten the two hex-head screws until snug, do not over tighten.
3. Press the red button at the top of the height rod and ensure it moves easily.
Figure 2-9. Attach Height Rod
© Rice Lake Weighing Systems ● All Rights Reserved 5
Rice Lake Mechanical Physician Scale Model RL-MPS-40
IMPORTANT
CAUTION
Bracket must be
on the bottom
2.2 Wheel Installation
To install the wheels onto the scale, use the following instructions.
Figure 2-10. Attach Scale Wheels
Ensure the wheel mount bracket is toward the bottom of the scale, as illustrated in Figure 2-10. If wheels are
mounted upside down, it can cause scale errors.
1. Align the wheel mount to the scale frame, ensuring the bracket is facing the bottom as illustrated in Figure 2-10.
2. Insert the screws with washers (included) through the bracket and the scale frame.
3. Adjusting the bracket to a level position and tighten screws.
To move the scale, hold both sides of the pillar top and tip slightly to keep the front side of the platform away from the floor while
ushing to new location.
p
Ensure all feet and other body parts are clear from the location before setting the scale upright.
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Figure 2-11. Moving the Scale
Counterpoise Weights
3.0 Counterpoise Weights
A 50 lb and 20 kg counterpoise weight are included and can be added to the first slot in the main beam of the mechanical
physician scale to enable it to weigh larger capacities.
Figure 3-1. Counterpoise Weights
Weigh in Kilograms
Position the 20 kg counterpoise weight in the first slot and move the main poise weight to the 180 kg slot.
Now the scale is ready to weigh 200 - 220 kg.
Figure 3-2. Weigh in Kilograms
Weigh in Pounds
Position the 50 lb counterpoise weight in the first slot and move the main poise weight to the 390 lb slot.
Now the scale is ready to weigh 440 - 490 lb.
Figure 3-3. Weigh in Pounds
© Rice Lake Weighing Systems ● All Rights Reserved 7
Rice Lake Mechanical Physician Scale Model RL-MPS-40
Weigh Beam
Scale Pointer
Eye Loop Area
Zero Adjusting
Screw
4.0 Maintenance and Troubleshooting
4.1 Zero Adjustment
To ensure accurate weighments, a zero adjustment should be done to the scale after assembly is complete.
Figure 4-1. Eye Loop Area and Zero Adjusting Screw Location
To perform a zero adjustment:
1. Ensure the scale is sitting on a level surface.
2. Check the eye loop area of the scale to ensure that the scale pointer is equally balanced between the eye loop area.
• Gently press the scale pointer down until it touches the bottom of the eye loop area.
• Release the scale pointer, it rises up and down in the eye loop area. It should settle in the center of the eye loop
area.
3. If the scale does not settle in the center, the small zero balance weight must be adjusted. Turn the zero adjusting
screw using a flat head screwdriver. The zero balance weight moves accordingly.
4. Perform Step 2 again. Continue adjusting the screw until the scale pointer settles in the center of the eye loop area.
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Maintenance and Troubleshooting
4.2 Troubleshooting
The accuracy of the RS-MPS-40, when calibrated at the factory, falls within plus or minus 1/4 pound. For the most accurate
weight, always use the scale on a hard, level surface and stand in the center of the scale platform with the weight distributed as
evenly as possible.
If an error occurs or seems excessive, chec
Problem Possible Fix
Zero balance of beam
Beam does not move freely
Platform rocks excessively Ensure scale is setting on a level surface
Beam does not move at all
uring a weighment
d
Scale is out of calibration Recalibrate by placing a known weight on the scale and moving the zero adjusting screw to bring the scale back to zero
The weigh beam must be balanced so the pointer settles in the center of the eye loop when both poise weights are set at zero
Adjust the balance by turning the zero adjusting screw at the left end of the weigh beam; see Section 4.1 on page 8
Ensure the pointer is not touching the side of the eye loop in its range of travel
Visually ensure that the linkage is centered and properly aligned; see Section 2.1.2 on page 4.
Ensure the poise weights are not set at a higher weight than the person’s actual weight; if so set the weights lower
Check to see that the steelyard rod is properly connected and aligned; see Section 2.1.2 on page 4
k the following:
Table 4-1. Troubleshooting Guide
4.3 Specifications
Maximum Capacity.............................. 440 lb (200 kg)
with Counterpoise weights .........490 lb (220 kg)
Graduation..........................................0.25 lb (0.1 kg)
Height Rod Range............................... 24-84" (60-212 cm)
Min. Value of Height per Division........ 0.125" (0.1 cm)
Platform Size.......................................14.75" x 10.75" (374.65 x 273.05 mm)
© Rice Lake Weighing Systems ● All Rights Reserved 9
Rice Lake Mechanical Physician Scale Model RL-MPS-40
10 Visit our website www.RiceLake.com
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
Rice Lake Weighing Systems is an ISO 9001 registered company.
© Rice Lake Weighing Systems Specifications subject to change without notice.
www.ricelake.com
September 20, 2017 PN 186212
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