Rice Lake BenchMark SL User manual

BenchMark® SL, SL/HE, CW-80B
Light-Capacity Spring Loaded Bench Scales
Technical Manual
PN 200150 Rev AMay 19, 2020

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
© Rice Lake Weighing Systems ● All Rights Reserved i
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.
1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 10'' x 10'' and 12'' x 12'' BenchMark SL, SL/HE and CW-80B Scales. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Leveling the Scale. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Connecting the Load Cell Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.4 Grounding the Scale Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.5 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.6 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.6.1 SL 10'' x 10'' and 12'' x 12'' Model Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.6.2 SL/HE 10'' x 10'' and 12'' x 12'' Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.6.3 CW-80B 10'' x 10'' and 12'' x 12'' Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.0 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3.1 BenchMark SL, BenchMark SL/HE and CW-80B Bench Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3.2 CW-80B Bench Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Load Cell Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.5 Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

BenchMark SL, SL/HE and CW-80B
ii Visit our website www.RiceLake.com
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
© Rice Lake Weighing Systems ● All Rights Reserved 1
1.0 Introduction
The manual provides an overview of the technical information for the BenchMark SL, SL/HE and CW-80B Light-Capacity Spring
Loaded Bench Scales.
Manuals and additional resources are available from the Rice Lake Weighing Systems website at www.ricelake.com
Warranty information can be found on the website at www.ricelake.com/warranties
1.1 Safety
Safety Signal 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.
Do not allow minors (children) or inexperienced persons to operate this unit.
Do not operate without all shields and guards in place.
Do not jump on the scale.
Do not use for purposes other then weight taking.
Do not place fingers into slots or possible pinch points.
Do not use any load bearing component that is worn beyond 5% of the original dimension.
Do not use this product if any of the components are cracked.
Do not exceed the rated load limit of the unit.
Do not make alterations or modifications to the unit.
Do not remove or obscure warning labels.
Before opening the unit, ensure the power cord is disconnected from the outlet.
Keep hands, feet and loose clothing away from moving parts.
DANGER
WARNING
CAUTION
IMPORTANT
WARNING

BenchMark SL, SL/HE and CW-80B
2 Visit our website www.RiceLake.com
1.2 10'' x 10'' and 12'' x 12'' BenchMark SL, SL/HE and CW-80B Scales
All of the 10'' x 10'' and 12'' x 12'' models have stainless steel covers and frame systems. All models use a single point load cell
with 10' of cable.
Figure 1-1. Overload Springs
The BenchMark SL, SL/HE and CW-80B scales use a sensitive 4-point, spring-plate suspension to minimize shock and overload
damage susceptible of light-capacity scales. The system uses a bolt and an overload protection spring at each of four loading
points beneath the top cover ( Figure 1-1 ). Each spring is set for a specific tension so that it will compress to prevent overload
damage. If a potentially damaging load is placed on a corner of the scale, the spring at that corner compresses. When the spring
compresses, the load is taken off the load cell. This eliminates the possibility of overloading the load cell. If a load more than
150% of total capacity is placed anywhere on the deck, the springs will compress and remove the load from the load cell.
In addition to the overload protection spring, the SL, SL/HE and CW-80B scales incorporate a load cell overload protection
screw beneath the load cell to help prevent overload damage.
To protect the load cell from being accidentally forced upward and damaged by improperly lifting the scale by the spider, a lift up
protection screw is incorporated into the design (Figure 1-2).
Figure 1-2. Lift up Protection Screw
Overload Protection Screw
Overload Protection Screw Lift-up Protection Screw

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 3
2.0 Installation
This section provides an overview of how to install the BenchMark SL, SL/HE and CW-80B .
2.1 Unpacking
Immediately after unpacking, visually inspect the scale to ensure that the unit is undamaged. The shipping carton should
contain the bench scale and this manual. If the bench scale was damaged in shipment, notify Rice Lake Weighing Systems and
the shipper immediately.
2.2 Leveling the Scale
1. Place the scale in the desired location that is reasonably level and free of unnecessary vibrations and air currents.
2. Lift off the scale top cover and locate the level bubble.
3. Adjust the four corner feet on the scale base until the level bubble and all feet contact the support surface so the scale
does not rock.
4. Lock the jam nuts on the feet when the final level is correct.
2.3 Connecting the Load Cell Cable
All models come with 10' of color-coded load cell cable.
Do not cut this cable. Cutting this cable voids the warranty.
See the indicator manual to determine the proper load cell cable input connectors. Use the following color codes to
wire the load cell cable to the indicator.
Connect Sense and Excitation wires together if using system without sense leads.
IMPORTANT
Note
Color Code Function
Green + Excitation
Black - Excitation
White - Signal
Red +Signal
Blue + Sense
Yellow - Sense
Table 2-1. SL Load Cell Wiring
Color Code Function
Green + Sense
Black - Excitation
White + Signal
Red - Signal
Blue + Excitation
Grey - Sense
Table 2-2. SL/HE Load Cell Wiring
Color Code Function
Green + Excitation
Black - Excitation
White + Signal
Red - Signal
Yellow Shield
Table 2-3. CW-80B Load Cell Wiring
Note

BenchMark SL, SL/HE and CW-80B
4 Visit our website www.RiceLake.com
2.4 Grounding the Scale Base
Bench scales can build up a static electricity charge during weighing operations. If powerful enough, this charge can travel
through the load cell cable to the indicator. To prevent this, all bench scales should be adequately grounded so that static
charges and transient electrical surges can drain directly to ground. Recommended practice is to connect the scale base to an
AC ground circuit using at least #12 wire. All BenchMark scales have either a grounding screw or a hole for such a grounding
screw located on the bottom of the lower frame for this purpose.
2.5 Calibration
It is recommended that the scale be exercised by loading it to near capacity two or three times before calibration to ensure
everything is seated. See the specific indicator manual for the proper calibration procedure.
To calibrate, see the following procedure:
1. With no load on scale, place the indicator in its calibration mode and perform a zero calibration.
2. Place certified calibration weights on platform equal to 70%–100% of scale’s capacity. If several weights are used,
distribute them evenly around the platform.
3. Perform a calibration.
4. Remove certified calibration weights and check the zero reading. If necessary, repeat the calibration process.
See the indicator manual for the specific indicator calibration procedure.
2.6 Replacement Parts
See the following information for replacement parts details:
Figure 2-1. SL, SL/HE and CW-80B Parts Illustration
Note
17 18
19
21 20
24
25
1
A
A
B
B
2
3
4
5
7
8
9
13
15
13
12
14
10
16
23
22
6

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 5
2.6.1 SL 10'' x 10'' and 12'' x 12'' Model Replacement Parts
Item No. Part No. Description Qty.
1 14920 Screw, Overload Protection, 8-32UNC x 1/4, SST 1
2 35128 Foot, 1/4 - 20 NC x 1 3/16 SST 4
3 14645 Jam Nut, Foot 1/4 - 20, SST 4
4 19086 Bottom Subassembly, (5 lb – 30 lb Scales) 1
6 19091 Cover, Top, 10 x 10 1
7 19088 Spider, Top, 10 x 10 1
8 15148 Lockwasher 1/4 SST 4
9 21948 Screw, Load Cell, 1/4 - 20 x 5/8 SST 4
10 15410 Bubble Level, Plastic, 15 mm 1
11 40956 Load Cell, SPT RL104, 2 lb SL Scale 1
188673 Load Cell, SPT RL42018A, 5 lb SL Scale
188675 Load Cell, SPT RL42018A, 10 lb SL Scale
188677 Load Cell, SPT RL42018A, 20 lb SL Scale
188678 Load Cell, SPT RL42018A, 30 lb SL Scale
12 15132 Lockwasher, #8, SST 1
13 14857 Pan Head Screw, 8 - 32 x 1/4 SST 1
14 15408 Rubber Grommet, 3/16 ID x 1/2 OD 1
15 16141 Cable Tie, 8'' 1
16 14984 Cap Screw (2 lb – 20 lb Scales) 4
21947 Cap Screw (30 lb Scale)
17 15412 Spring, Overload (2 lb Scale) 4
21945 Spring, Overload (5 lb Scale)
15416 Spring, Overload (10 lb Scale)
21946 Spring, Overload (20 lb Scale)
21944 Spring, Overload (30 lb Scale)
18 15149 Flat Washer, 1/4 type A, SST 4
19 14634 Nut, Nylon Insert, 1/4-20, SST 4
20 19089 Load Cell Shim, SST 1
21 15409 Plastic Wire Clamp 1
22 19090 Load Plate, (2 lb – 30 lb Scales) 1
23 15150 Washer, Rubber 4
24 15138 Washer, #8, SST 1
25 14862 Screw, 8-32 x 3/8 SST 1
– 15071 Cap Screw 1/2 - 20 NF x 1.939 4
Table 2-4. SL 10'' x 10'' Parts List
Item No. Part No. Description Qty.
1 14920 Screw, Overload Protection, 8-32UNC x 1/4, SST 1
2 35128 Foot, 1/4 - 20 NC x 1 3/16 SST 4
3 14645 Jam Nut, Foot 1/4 - 20, SST 4
4 35066 Bottom Subassembly, (30 lb – 100 lb Scales) 1
6 35069 Cover, Top, 12 x 12 1
7 35068 Spider, Top, 12 x 12 1
8 15148 Lockwasher 1/4 SST 4
9 21948 Screw, Load Cell, 1/4 - 20 x 5/8 SST 4
10 15410 Bubble Level, Plastic, 15 mm 1
11 188678 Load Cell, SPT RL42018A, 30 lb SL Scale 1
188679 Load Cell, SPT RL42018A, 50 lb SL Scale
188681 Load Cell, SPT RL42018A, 100 lb SL Scale
12 15132 Lockwasher, #8, SST 1
13 14857 Pan Head Screw, 8 - 32 x 1/4 SST 1
14 15408 Rubber Grommet, 3/16 ID x 1/2 OD 1
15 16141 Cable Tie, 8'' 1
16 21947 Cap Screw (30 lb Scale) 4
35199 Cap Screw (50 lb – 100 lb Scales)
17 21944 Spring, Overload (30 lb Scale) 4
35086 Spring, Overload (50 lb Scale)
35200 Spring, Overload (100 lb Scale)
18 15149 Flat Washer, 1/4 type A, SST 4
19 14634 Nut, Nylon Insert, 1/4-20, SST 4
20 19089 Load Cell Shim, SST 1
21 15409 Plastic Wire Clamp 1
22 35067 Load Plate, (30 lb – 100 lb Scales) 1
23 15150 Washer, Rubber 4
24 15138 Washer, #8, SST 1
25 14862 Screw, 8 - 32 x 3/8 SST 1
– 15071 Cap Screw 1/2 - 20 NF x 1.939 4
Table 2-5. SL 12'' x 12'' Parts List

BenchMark SL, SL/HE and CW-80B
6 Visit our website www.RiceLake.com
2.6.2 SL/HE 10'' x 10'' and 12'' x 12'' Model
Item No. Part No. Description Qty.
1 14920 Screw, Overload Protection, 8-32UNC x 1/4, SST 1
2 35128 Foot, 1/4 - 20 NC x 1 3/16 SST 4
3 14645 Jam Nut, Foot 1/4 - 20, SST 4
4 19086 Bottom Subassembly, (5 lb – 30 lb Scales) 1
6 19091 Cover, Top, 10 x 10 1
7 19088 Spider, Top, 10 x 10 1
8 15148 Lockwasher 1/4 SST 4
9 21948 Screw, Load Cell, 1/4 - 20 x 5/8 SST 4
10 15410 Bubble Level, Plastic, 15 mm 1
11 108685 Load Cell, SPT RLPWM15HE,
5 lb and 10 lb SL/HE Scales
1
108686 Load Cell, SPT RLPWM15HE,
20 lb and 30 lb SL/HE Scales
12 15132 Lockwasher, #8, SST 1
13 14857 Pan Head Screw, 8 - 32 x 1/4 SST 1
14 15408 Rubber Grommet, 3/16 ID x 1/2 OD 1
15 16141 Cable Tie, 8'' 1
16 14984 Cap Screw (5 lb – 20 lb Scales) 4
21947 Cap Screw (30 lb Scale)
17 21945 Spring, Overload (5 lb Scale) 4
15416 Spring, Overload (10 lb Scale)
21946 Spring, Overload (20 lb Scale)
21944 Spring, Overload (30 lb Scale)
18 15149 Flat Washer, 1/4 type A, SST 4
19 14634 Nut, Nylon Insert, 1/4-20, SST 4
20 19089 Load Cell Shim, SST 1
21 15409 Plastic Wire Clamp 1
22 19090 Load Plate, (5 lb – 30 lb Scales) 1
23 15150 Washer, Rubber 4
24 15138 Washer, #8, SST 1
25 14862 Screw, 8 - 32 x 3/8 SST 1
– 15071 Cap Screw 1/2 - 20 NF x 1.939 4
Table 2-6. SL/HE 10'' x 10'' Model
Item No. Part No. Description Qty.
1 14920 Screw, Overload Protection, 8-32UNC x 1/4, SST 1
2 35128 Foot, 1/4 - 20 NC x 1 3/16 SST 4
3 14645 Jam Nut, Foot 1/4 - 20, SST 4
4 35066 Bottom Subassembly, (30 lb – 100 lb Scales) 1
6 35069 Cover, Top, 12 x 12 1
7 35068 Spider, Top, 12 x 12 1
8 15148 Lockwasher 1/4 SST 4
9 21948 Screw, Load Cell, 1/4 - 20 x 5/8 SST 4
10 15410 Bubble Level, Plastic, 15 mm 1
11 108686 Load Cell, SPT RLPWM15HE, 30 lb SL/HE Scale 1
108687 Load Cell, SPT RLPWM15HE, 50 lb SL/HE Scale
108688 Load Cell, SPT RLPWM15HE, 100 lb SL/HE Scale
12 15132 Lockwasher, #8, SST 1
13 14857 Pan Head Screw, 8 - 32 x 1/4 SST 1
14 15408 Rubber Grommet, 3/16 ID x 1/2 OD 1
15 16141 Cable Tie, 8'' 1
16 21947 Cap Screw (30 lb Scale) 4
35199 Cap Screw (50 lb – 100 lb Scales)
17 21944 Spring, Overload (30 lb Scale) 4
35086 Spring, Overload (50 lb Scale)
35200 Spring, Overload (100 lb Scale)
18 15149 Flat Washer, 1/4 type A, SST 4
19 14634 Nut, Nylon Insert, 1/4-20, SST 4
20 19089 Load Cell Shim, SST 1
21 15409 Plastic Wire Clamp 1
22 35067 Load Plate, (30 lb – 100 lb Scales) 1
23 15150 Washer, Rubber 4
24 15138 Washer, #8, SST 1
25 14862 Screw, 8 - 32 x 3/8 SST 1
– 15071 Cap Screw 1/2 - 20 NF x 1.939 4
Table 2-7. SL/HE 12'' x 12'' Model

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 7
2.6.3 CW-80B 10'' x 10'' and 12'' x 12'' Model
Item No. Part No. Description Qty.
1 14920 Screw, Overload Protection, 8-32UNC x 1/4, SST 1
2 35128 Foot, 1/4 - 20 NC x 1 3/16 SST 4
3 14645 Jam Nut, Foot 1/4 - 20, SST 4
4 19086 Bottom Subassembly, (6 lb – 30 lb Scales) 1
6 19091 Cover, Top, 10 x 10 1
7 19088 Spider, Top, 10 x 10 1
8 15148 Lockwasher 1/4 SST 4
9 21948 Screw, Load Cell, 1/4 - 20 x 5/8 SST 4
10 15410 Bubble Level, Plastic, 15 mm 1
11 30783 Load Cell, SPT RL1380, 6 lb CW-80B Scale 1
30782 Load Cell, SPT RL1380, 10 lb CW-80B Scale
30781 Load Cell, SPT RL1380, 15 lb CW-80B Scale
30780 Load Cell, SPT RL1380, 30 lb CW-80B Scale
12 15132 Lockwasher, #8, SST 1
13 14857 Pan Head Screw, 8 - 32 x 1/4 SST 1
14 15408 Rubber Grommet, 3/16 ID x 1/2 OD 1
15 16141 Cable Tie, 8'' 1
16 14984 Cap Screw (6 lb – 15 lb Scales) 4
21947 Cap Screw (30 lb – 60 lb Scales)
17 21945 Spring, Overload (5 lb and 6 lb Scales) 4
15416 Spring, Overload (10 lb Scale)
21946 Spring, Overload (15 lb and 20 lb Scales)
21944 Spring, Overload (30 lb Scale)
18 15149 Flat Washer, 1/4 type A, SST 4
19 14634 Nut, Nylon Insert, 1/4-20, SST 4
20 19089 Load Cell Shim, SST 1
21 15409 Plastic Wire Clamp 1
22 19090 Load Plate, (6 lb – 30 lb Scales) 1
23 15150 Washer, Rubber 4
24 15138 Washer, #8, SST 1
25 14862 Screw, 8 - 32 x 3/8 SST 1
– 15071 Cap Screw 1/2 - 20 NF x 1.939 4
Table 2-8. CW-80B 10'' x 10'' Model
Item No. Part No. Description Qty.
1 14920 Screw, Overload Protection, 8-32UNC x 1/4, SST 1
2 35128 Foot, 1/4 - 20 NC x 1 3/16 SST 4
3 14645 Jam Nut, Foot 1/4 - 20, SST 4
4 35066 Bottom Subassembly, (30 lb – 60 lb Scales) 1
6 35069 Cover, Top, 12 x 12 1
7 35068 Spider, Top, 12 x 12 1
8 15148 Lockwasher 1/4 SST 4
9 21948 Screw, Load Cell, 1/4 - 20 x 5/8 SST 4
10 15410 Bubble Level, Plastic, 15 mm 1
11 30780 Load Cell, SPT RL1380, 30 lb CW-80B Scale 1
30779 Load Cell, SPT RL1380, 60 lb CW-80B Scale
12 15132 Lockwasher, #8, SST 1
13 14857 Pan Head Screw, 8 - 32 x 1/4 SST 1
14 15408 Rubber Grommet, 3/16 ID x 1/2 OD 1
15 16141 Cable Tie, 8'' 1
16 21947 Cap Screw (30 lb Scale) 4
35199 Cap Screw (60 lb Scale)
17 21944 Spring, Overload (30 lb Scale) 4
35086 Spring, Overload (60 lb Scale)
18 15149 Flat Washer, 1/4 type A, SST 4
19 14634 Nut, Nylon Insert, 1/4-20, SST 4
20 19089 Load Cell Shim, SST 1
21 15409 Plastic Wire Clamp 1
22 35067 Load Plate, (30 lb – 60 lb Scales) 1
23 15150 Washer, Rubber 4
24 15138 Washer, #8, SST 1
25 14862 Screw, 8 - 32 x 3/8 SST 1
– 15071 Cap Screw 1/2 - 20 NF x 1.939 4
Table 2-9. CW-80B 12'' x 12'' Model

BenchMark SL, SL/HE and CW-80B
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3.0 Appendix
This section provides additional information about the BenchMark SL, SL/HE and CW-80B scales.
3.1 Options
Optional ball transfer, roller conveyor tops and custom height columns for attaching indicators to the scale are available.
Consult the factory for available options.
3.2 Troubleshooting
For troubleshooting details, see the following information:
Issue Cause Solution
No display on indicator Power disconnected Connect power
Cable cut or disconnected Repair cable
Signal leads incorrectly wired at indicator Connect according to the manual
Indicator display remains at zero Incorrect load cell cable connections
Faulty indicator Service indicator
Erratic weight displays
on indicator
Vibration near the scale Remove the source of the vibration or adjust digital filtering of
indicator to minimize erratic display
Scale not level Level the scale
Water damage to the load cell or cable Replace the load cell
Faulty indicator Service the indicator
Loose load cell screws Tighten to correct torque
Faulty load cell Test and replace if necessary
Consistently low weight Indicator not properly adjusted to zero Zero indicator correctly
Scale cover binding Obtain adequate clearance
Overload stops set too high Reset the stops correctly
Indicator not calibrated for scale Calibrate the scale
Faulty load cell Test and replace if necessary
Table 3-1. Troubleshooting

Appendix
© Rice Lake Weighing Systems ● All Rights Reserved 9
3.3 Dimensions
For SL, SL/HE and CW-80B bench scale dimensions see the following information:
Figure 3-1. BenchMark Dimensions
3.3.1 BenchMark SL, BenchMark SL/HE and CW-80B Bench Scale
See Figure 3-1 for Table 3-2 dimension references.
3.3.2 CW-80B Bench Scale
See Figure 3-1 for Table 3-3 dimension references.
Capacity Product Dimensions (L x W x H) L1 x W1
2 lb (1 kg)
10'' x 10'' x 3.15''
(254 mm x 254 mm x 80 mm)
10.25'' x 10.25''
(260 mm x 260 mm)
5 lb (2.5 kg)
10 lb (5 kg)
15 lb (7 kg)
20 lb (10 kg)
30 lb (15 kg)
30 lb (15 kg) 12'' x 12'' x 3.25''
(305 mm x 305 mm x 83 mm)
12.25'' x 12.25''
(311 mm x 311 mm)
50 lb (25 kg)
100 lb (50 kg)
Table 3-2. SL and SL/HE Model Sizes
Part No. Capacity Product Dimensions (L x W x H) L1 x W1
35075 6 lb (3 kg) 10'' x 10'' x 3.15''
(254 mm x 254 mm x 80 mm)
10.25'' x 10.25''
(260 mm x 260 mm)
35076 10 lb (5 kg)
35077 15 lb (7 kg) 10'' x 10'' x 3.15''
(254 mm x 254 mm x 80 mm)
10.25'' x 10.25''
(260 mm x 260 mm)
35078 30 lb (15 kg)
35079 30 lb (15 kg) 12'' x 12'' x 3.25''
(305 mm x 305 mm x 83 mm)
12.25'' x 12.25''
(311 mm x 311 mm)
35080 60 lb (30 kg)
Table 3-3. CW-80B Model Sizes
H
W1L1
LW

BenchMark SL, SL/HE and CW-80B
10 Visit our website www.RiceLake.com
3.4 Load Cell Replacement
Use the following steps to replace load cells:
1. Unplug AC power from indicator and disconnect load cell cable from indicator.
2. Remove scale top cover.
3. Locate and uninstall the two upper load cell screws.
Do not remove four spring-loaded screws that attach load plate to spider assembly.
4. Remove load plate/spider assembly as a unit.
5. Remove spacer between load plate and load cell and set it aside.
Figure 3-2. Load Cell Mount Diagram
6. Turn scale over and back off overload protection screw one complete turn. Completely unscrew and remove lift up
protection screw.
7. Unscrew and remove two lower load cell screws. The load cell and cable can now be removed from scale. Do not lose
shim beneath load cell.
8. Thread cable of replacement load cell through rubber grommet. Position load cell on shim and screw in two lower load
cell screws. Torque to 80 in-lb.
9. Replace lift up protection screw by screwing it in until it lightly bottoms, then back it off 1/4 turn.
10. Turn scale right side up. Position spacer on load cell, then place load plate/spider assembly into position. Screw in two
upper load cell screws. Torque to 80 in-lb.
11. Using an accurate caliper, check compressed spring length on four overload springs (Figure 3-3 on page 11). If
necessary, adjust spring length to specifications shown in Table 3-4 on page 11. Replace top cover and re-level scale
if necessary.
12. Connect load cell cable to indicator.
13. Recalibrate scale as described in Section 2.5 on page 4.
IMPORTANT
Load Cell Screw
Top Sub-AssemblyLoad Plate / SpiderLoad Cell Screw
Overload Protection Screw
Scale Top Cover
Lift-up Protection Screw

Appendix
© Rice Lake Weighing Systems ● All Rights Reserved 11
14. Adjust overload protection screw on bottom of scale by loading scale to 125% capacity. Place this weight on top cover,
centered on platform. Use a hex wrench to screw in overload protection screw until it touches load cell, then back off
1/6 turn. Recheck calibration.
Figure 3-3. Spring Height
Scale Model Spring Length “H”
10 x 10 - 2 lb 1.25
10 x 10 - 5 lb 1.06
10 x 10 - 6 lb 1.25
10 x 10 - 10 lb 0.94
10 x 10 - 15 lb 1.25
10 x 10 - 20 lb 0.97
10 x 10 - 30 lb 1.43
12 x 12 - 30 lb 1.43
12 x 12 - 50 lb 1.12
12 x 12 - 60 lb 1.25
12 x 12 - 100 lb 1.16
Table 3-4. Overload Spring Length
H ±.0 2

BenchMark SL, SL/HE and CW-80B
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3.5 Limited Warranty
Rice Lake Weighing Systems (RLWS) warrants that all RLWS equipment and systems properly installed by a Distributor or
Original Equipment Manufacturer (OEM) will operate per written specifications as confirmed by the Distributor/OEM and
accepted by RLWS. All systems and components are warranted against defects in materials and workmanship for two years for
the Benchmark SL and CW-80B Bench Scale, and three years for the BenchMark SL/HE.
RLWS warrants that the equipment sold hereunder will conform to the current written specifications authorized by RLWS.
RLWS warrants the equipment against faulty workmanship and defective materials. If any equipment fails to conform to these
warranties, RLWS will, at its option, repair or replace such goods returned within the warranty period subject to the following
conditions:
• Upon discovery by Buyer of such nonconformity, RLWS will be given prompt written notice with a detailed explanation of
the alleged deficiencies.
• Individual electronic components returned to RLWS for warranty purposes must be packaged to prevent electrostatic
discharge (ESD) damage in shipment. Packaging requirements are listed in a publication, “Protecting Your Components
From Static Damage in Shipment,” available from RLWS Equipment Return Department.
• Examination of such equipment by RLWS confirms that the nonconformity actually exists, and was not caused by
accident, misuse, neglect, alteration, improper installation, improper repair or improper testing; RLWS shall be the sole
judge of all alleged nonconformities.
• Such equipment has not been modified, altered, or changed by any person other than RLWS or its duly authorized repair
agents.
• RLWS will have a reasonable time to repair or replace the defective equipment. Buyer is responsible for shipping
charges both ways.
• In no event will RLWS be responsible for travel time or on-location repairs, including assembly or disassembly of
equipment, nor will RLWS be liable for the cost of any repairs made by others.
These warranties exclude all other warranties, expressed or implied, including without limitation warranties of merchantability or
fitness for a particular purpose. Neither RLWS nor distributor will, in any event, be liable for incidental or consequential
damages.
RLWS and buyer agree that RLWS’s sole and exclusive liability hereunder is limited to repair or replacement of such goods.
In accepting this warranty, the buyer waives any and all other claims to warranty.
Should the seller be other than RLWS, the buyer agrees to look only to the seller for warranty claims.
No terms, conditions, understanding, or agreements purporting to modify the terms of this warranty shall have any legal effect
unless made in writing and signed by a corporate officer of RLWS and the Buyer.

Specifications
© Rice Lake Weighing Systems ● All Rights Reserved 13
4.0 Specifications
Load Cell
SL IP66 aluminum and environmentally sealed
SL/HE IP69K stainless steel, hermetically sealed
CW-80B IP67 stainless steel and environmentally sealed
Available Sizes
10'' x 10'', 12'' x 12''
Rated Output
0.91 mV/V
Maximum Overload
SL 200%
SL/HE 200%, except 150% for 30 lb
CW-80B 200%
Overload Protection
Shock-absorbing spider
Cable Length
10' (3 m) – 6 wire shielded
Output Impedance
350 
Compensated Temperature Range
14° F – 122° F (-10° C – 50° C)
Safe Temperature Range
-22° F – 158° F (-30° C – 70° C)
Certifications and Approvals
SL
NTEP
CoC 95-072
Accuracy Class III; 5000 d
Measurement Canada
AM-5082, Class III 5000 d
Load cell is cFMus approved
SL/HE
NTEP
CoC 95-072
Accuracy Class III; 5000 d
Measurement Canada
AM-5082, Class III 5000 d
Load cell is FM approved
CW-80B
NTEP
CoC 96-107
Accuracy Class III; 3000 d
Measurement Canada
AM-5156, Class III 3000 d
Load cell is FM approved

BenchMark SL, SL/HE and CW-80B
14 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 [phone]
Rice Lake Weighing Systems is an ISO 9001 registered company.
© Rice Lake Weighing Systems Specifications subject to change without notice.
www.ricelake.com
PN 200150 Rev AMay 19, 2020