Rice Lake RoughDeck User manual

RoughDeck®QC
Quick Clean Floor Scale
Installation Manual
PN 178041December 13, 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
© 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 Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1.1 Options/Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Scale Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Unpack Floor Scale. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Junction Box Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4.1 Junction Box Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.5 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 5
2.6 Pit Installation – Optional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.6.1 Install Scale in Pit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.7 Safety Bar in Up Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.8 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.0 Adjustments and Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Corner Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.0 Service Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1 Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 Load Cell Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.1 Load Cell Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

RoughDeck QC Floor Scale
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
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 RoughDeck QC Floor Scale is a hostile environment, stainless steel floor scale customized for food, chemical and other
demanding wash-down applications. The QC’s exclusive gas-shock design provides easy lifting and soft closing of the top
plate, for use during extended under-deck cleaning.
This manual is intended for use by service technicians responsible for installing and servicing the floor scale.
Manuals are available for viewing and/or downloading from the Rice Lake Weighing Systems website at
www.ricelake.com/manuals
Warranty information can be found on the website at www.ricelake.com/warranties
1.1 Standard Features
• Rugged wash-down design
• Smooth, 304 stainless steel top deck
• Rigid 304 stainless steel tube frame
• 3/16'' thick smooth top plate
• 4 stainless steel, welded seal IP67, shear-beam load cells
• Remote stainless steel NEMA Type4X junction box
• Four adjustable stainless steel SUREFOOT support feet
• 20' of SURVIVOR®hostile environment load cell cable to connect an indicator to the junction box
• Manual drop-in-place safety bar
1.1.1 Options/Accessories
• Stainless steel deck with tread-plate
• Floor stand for indicator
• Access ramps to fit most scale sizes
• Pit frames

RoughDeck QC Floor Scale
2 Visit our website www.RiceLake.com
1.2 Safety
Safety Signal Definitions:
DANGER
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.
WARNING
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.
CAUTION
Indicates a potentially hazardous situation that, if not avoided, could result in minor or moderate injury.
IMPORTANT
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 use for purposes other then weight taking.
Do not place fingers, toes or other body parts 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.
Keep hands, feet and loose clothing away from moving parts.
WARNING

Installation
© Rice Lake Weighing Systems ●All Rights Reserved 3
2.0 Installation
Use this sectionto unpack and install the scale.
2.1 Scale Location
IMPORTANT
The scale must never be loaded beyond its capacity, even momentarily.
• Select a site where overweight loads can maneuver easily without crossing the platform.
• Avoid areas where damage could occur from side impacts of wheels or forklift tines.
• Avoid areas where falling objects could cause shock damage.
• Avoid areas where water may damage a scale not meant for a wash-down environment.
• The scale must be level within 1/4 inch. Choose a site where the floor is level to this standard to avoid excessive
shimming. The floor may require modification if unable to select and area up to standard.
• For systems where the scale is connected to a 120V AC circuit, the instrument must be directly connected to an earth
ground with a ground interface cable of no more than 3 resistance throughout itslength.
2.2 Unpack Floor Scale
Remove all packing material and inspect scale for visible damage caused during shipment. Report any damage to the shipping
company and Rice Lake Weighing Systems immediately.
CAUTION
Prior to lifting the scale, ensure the top plate is locked by securing the tool-less top plate lock down.
Figure 2-1. Top Plate Lock Down
Figure 2-2. Proper Lifting Technique
IMPORTANT
Lift the scale only with a properly designed spreader bar as shown in Figure 2-2. 
Lifting force must be vertical to avoid bending the eye bolts.
WARNING
Eye bolts must always be inserted into the topof the scale. Lifting should always occur with the top plate facing
up and the eye bolts securely attached through the nuts welded to the bottom sideof the top plate. Lifting from
the bottom of the plate could cause nuts to break loose and the scale to fall.
Single Chain Lift Double Chain Lift
1/2-20NF Eye Bolts
PN 17709

RoughDeck QC Floor Scale
4 Visit our website www.RiceLake.com
2.3 Junction Box Installation
Install the junction box in a convenient location, off from the floor, that is within 10' of the floor scale. See the junction box
manual.
2.4 Cable Connections
Each scale kit includes 20' of 6-wire cable to connect the scale to an indicator. The interface cable between the scale and the
indicator must be protected against crushing, cutting or moisture damage. See Figure 2-4 on page 4.
2.4.1 Junction Box Connections
1. Insert one end of the 20' cableinto the junction box.
2. Connect the wires to the indicator terminal as shown in Table 2-1.
3. Pull out excess and tighten the strain relief bushing tohold the cable snugly.
Figure 2-3. Junction Box Connections
4. Route the cable to the indicator considering the following:
• Load cell cables fromthe scale platform to the junction box should be protected with conduit.
• Leave a strain relief loop to facilitate future lifting of the scale for servicing or cleaning.
5. When the interface cable is in position, wire the cable to the indicator. See the indicator manual for correct wiring
arrangement.
Figure 2-4. Cable Protection
IMPORTANT
If the site has potential dangers, a method of protection is required, such as running the cable in conduit.
CELL 1
CELL 4
CELL 2
CELL 3
+EX
–EX
+SI
–SI
100 K
+SE
–SE
+EX
+EX +EX
+EX
–EX
–EX
–EX
–EX +SI
+SI
+SI
+SI
–SI
–SI
–SI
–SI SHD
SHD
SHD
SHD
23126
Rev. A
SHD
JU1 JU2
JU3
JU4
100 K
100 K 100 K
Load Cell
Connections
Load Cell
Connections
Indicator
Connection
Cable Color Junction Box
Bare #1 (Shield)
White #2 (-Signal)
Green #3 (+Signal)
Blue #4 (-Sense)
Black #5 (-Excitation)
Yellow #6 (+Sense)
Red #7 (+Excitation)
Table 2-1. Indicator Connection
Cable Color Junction Box
Red +Excitation
Black -Excitation
Green +Signal
White -Signal
Base or Clear Shield
Table 2-2. Load Cell Connections
Floor
Steel Cover Screw
Steel Cover
Cable

Installation
© Rice Lake Weighing Systems ●All Rights Reserved 5
2.5 Dimensions
Figure 2-5. Scale Dimensions
Table 2-3. Dimensions
Part No. Scale Size A B C D E F G H
50402 30.00 24.68 2.66 30.00 2.80 24.21 2.99 3.50
50403 36.00 30.68 2.66 36.00 2.80 30.21 2.99 3.50
50404 48.00 42.68 2.66 48.00 2.80 42.21 2.99 3.50
50405 48.00 42.68 2.66 48.00 2.80 42.21 2.99 3.50
50406 48.00 42.68 2.66 48.00 2.80 42.21 2.99 4.50
50407 60.00 54.68 2.66 48.00 2.80 42.21 2.99 3.50
50408 60.00 54.68 2.66 48.00 2.80 42.21 2.99 4.50
50409 60.00 53.68 3.16 48.00 2.80 42.21 2.99 4.50
50410 72.00 66.68 2.66 48.00 2.80 42.21 2.99 4.50
50411 72.00 66.68 2.66 48.00 2.80 42.21 2.99 4.50
50413 60.00 54.68 2.66 60.00 2.80 54.21 2.99 4.50
50414 60.00 54.68 2.66 60.00 2.80 54.21 2.99 4.50
50415 60.00 53.68 3.16 60.00 2.80 54.21 2.99 4.50
50416 84.00 76.68 3.66 60.00 2.80 54.21 2.99 5.50
50417 84.00 76.68 3.66 60.00 2.80 54.21 2.99 5.50
50418 84.00 76.68 3.66 60.00 2.80 54.21 2.99 5.50
2.5X2.5-2K
3X3-2K
4X4-2K
4X4-5K
4X4-10K
4X5-2K
4X5-5K
4X5-10K
4X6-2K
4X6-5K
5X5-2K
5X5-5K
5X5-10K
5X7-2K
5X7-5K
5X7-10K
A
B
H
G
E
C
D
F
4
12
3

RoughDeck QC Floor Scale
6 Visit our website www.RiceLake.com
2.6 Pit Installation – Optional
Each site has different concrete/foundation support requirements. Install the pit in a suitable poured-concrete foundation
according to standard construction practices. See Figure 2-8 on page 8.
• Length of conduit pipe is determined on site.
• Slope pipe for water drainage.
• Tie pit in with existing floor re-bar, if required.
• Ensure undersideis supported with concrete or grout (plate is an integral part of the frame).
• Keep pocket free of concrete.
• Coping must sit level in floor to allow proper scale operation.
IMPORTANT
The following statements should be adhered to when installing a pit scale.
* Use concrete of minimum yield strength 5,000 PSI or 6-bag mix.
* Allow 7 days to cure (wet concrete periodically during this time).
* Dimensions shown assume firm, stable soil conditions. When soil conditions are not adequate, place
foundation at sufficient depth.
* In wet or wash-down applications, the use of hermetically sealed load cells is recommended, and the
junction box should be mounted remotely in a dry location.
* Wire mesh to have minimum 0.75'' cover bottom and sides.
2.6.1 Install Scale in Pit
1. Place the scale frame into the pit. It should be seated on the corner plates.
2. Adjust feet as necessary so theplatform is level to within 1/4".
3. Feed load cell cables through the conduit. Route on the same side as the hinge. Leave a strain relief loop to allow
enough cable for free movement of the scale in the lifted position without tension in the cables.
4. Route the load cell cables through the fittings in the junction box.
Figure 2-6. Load Cell Corner Numbering
5. Wire the cables to the junction box according to the corner numbering diagram and load cell wiring in Section 4.2.1on
page 12.
6. Coil and store excess cable before hooking up to junction box.
• Do not cut excess load cell cable.
•Do not store the excess cable in the scale pit.
7. Make sure the scale opens and closes gently to prevent damage to load cells.
4
12
3

Installation
© Rice Lake Weighing Systems ●All Rights Reserved 7
2.7 Safety Bar in Up Position
A safety bar is provided that, when in proper position, allows access to work/wash-down the area under the scale.
WARNING
Ensure safety bar is in the proper position when working under the top plate.
Figure 2-7. Top Plate with Safety Bar in Position
1. Using the hand cutout, raise the top.
2. Holding the top plate, raise the safety bar and attach the end of it to the angle on the top plate with the hardware
provided.
3. Release the pressure on the cylinders to allow the frame to rest on the safety bar.

RoughDeck QC Floor Scale
8 Visit our website www.RiceLake.com
Figure 2-8. Example Pit Installation Drawing
Pit Frame Requirements for Scales
ScaleSize Capacity A B C D E F G
2.5' x 2.5' 2,000 lb 30.75 31.00 34.75 35.00 42.75 43.00 4.00
3' x 3' 2,000 lb 36.75 37.00 40.75 41.00 48.75 49.00 4.00
4' x 4' 2,000 lb 48.75 49.00 52.75 53.00 60.75 61.00 4.00
4' x 4' 5,000 lb 48.75 49.00 52.75 53.00 60.75 61.00 4.00
4' x 4' 10,000 lb 48.75 49.00 53.75 54.00 61.75 62.00 5.00
4' x 5' 2,000 lb 60.75 49.00 64.75 53.00 72.75 61.00 4.00
4' x 5' 5,000 lb 60.75 49.00 65.75 54.00 73.75 62.00 5.00
4' x 5' 10,000 lb 60.75 49.00 65.75 54.00 73.75 62.00 5.00
4' x 6' 2,000 lb 72.75 49.00 77.75 54.00 85.75 62.00 5.00
4' x 6' 5,000 72.75 49.00 77.75 54.00 85.75 62.00 5.00
4' x 6' 10,000 72.75 49.00 78.75 55.00 86.75 63.00 6.00
5' x 5' 2,000 60.75 61.00 65.75 66.00 73.75 74.00 5.00
5' x 5' 5,000 60.75 61.00 65.75 66.00 73.75 74.00 5.00
5' x 5' 10,000 60.75 61.00 65.75 66.00 73.75 74.00 5.00
5' x 7' 2,000 84.75 61.00 90.75 67.00 98.75 75.00 6.00
5' x 7' 5,000 84.75 61.00 90.75 67.00 98.75 75.00 6.00
5' x 7' 10,000 84.75 61.00 90.75 67.00 98.75 75.00 6.00
6' x 6' 5,000 72.75 73.00 78.75 79.00 86.75 87.00 6.00
6' x 6' 10,000 72.75 73.00 78.75 79.00 86.75 87.00 6.00
E
C
A
A/2
F
D
B
B/2
0.75"
0.75" All Around
5.0"
1.31"
G
4.0" Typ.
Ensure all four corner
pads are fully grouted.
Provide 3/4'' nominal bore galvanized
electrical conduit for load cell cable
2'' nominal bore drain pipe for
wet or washed locations. 
Scale must not be submerged.
Slope 1/2'' per foot from
all sides to drain.
4 x 4'' wire mesh
3/16'' Ø wire
Existing shop floor, typical all around.

Installation
© Rice Lake Weighing Systems ●All Rights Reserved 9
2.8 Replacement Parts
Figure 2-9. Floor Scale Parts Illustrations
Table 2-4. Repair Parts List
Item No. Description Qty.
3Foot, Floor Scale, Surefoot 4
4Screw, Cap 1/2-20NF X 1.909 8
5Load Cell 4
6Spring, Gas 4
9Pin: Hinge: 5/16" DIA. X 5" Long: SST 3
10 Ring, Retaining 5/16 Shaft 6
11 Pin: Clevis: 5/16 DIA. X 1-1/2 Long: SST 4
12 Pin: Cotter 1/8 X 3/4 4
13 Screw, Cap 5/16-24NFx1 Hex 1
14 Screw, Cap 5/16-18NCx1 Hex Socket SST 4
15 Screw, Cap 1/4-20NCX1 Hex 1
16 Nut, Lock 1/4-20NC Hex SST 1
17 Heavy Duty Corner Pin Lock 2
18 Ring, Retaining 1/2" Shaft 2
19 Safety Latch: Cover 1
21 J-Box,JB4SS 4 Channel 1
22 Cable,6 Conductor 20ft 1
17
20
6
16
15
19
18
13
5
10 911
14
6
12
10
3
4
6
21
22

RoughDeck QC Floor Scale
10 Visit our website www.RiceLake.com
3.0 Adjustments and Calibration
To accommodate minor unevenness, use the scale feet adjust the scale up or down to using the scale feet maintain the proper
height and ensure it is level. Raise the scale corner slightly and adjust the feet by hand until all feet are contacting corner pads
equally. After completing height adjustments, recheck the levelness of the deck with a level. The deck must be level within 1/4".
CAUTION
The scale is heavy so ensure there is adequate assistance to stabilize the scale while adjusting the feet. Use
lifting aids and proper lifting techniques to avoid muscle strain.
IMPORTANT
When adjusting scale feet, use care to prevent scale foot from bottoming out against the underside of the load
cell. Also, the foot stem may be damaged by bending or stripping threads if extended beyond the maximum
height adjustment.
3.1 Corner Correction
To calibrate the scale, all load cells need to be adjusted so the output signals are equal. Adjust the signals using the
potentiometers in the junction box, a process known as trimming.
Figure 3-1. Trim Potentiometers
Trim using the following:
1. Remove the junction box cover and identify the load cell terminals corresponding to each corner (CELL 1, CELL2,
CELL 3, and CELL 4).
2. Connect the indicator and calibrate using a test weight. A weight of 25% of scale capacity is recommended.
Example – 500 lbs for 2K-lb models.
3. Ensure there is no weight on the scale and the indicator is at zero.
4. Turneachofthefourpotentiometers clockwise to increase the reading until there is a clickingsound.This ensures the
maximum signal from each load cell.
5. Place the test weight on one cornerand record the indicated weight.
6. Repeat the process for each of the other corners.
7. Use the corner with the smallest output as a reference. Place the test weight on one of the other corners and adjust
that load cell's potentiometer to match the output of the reference cell.
8. Repeat this procedure with the other high corners.
9. Adjustments are interactive, so adjusting the higher outputs may affect the reference load cell output. Re-zero the
indicator andrepeat the test until all corners are within ± 1% of the test weight being used.
CELL 1
CELL 4
CELL 2
CELL 3
+EX
–EX
+SI
–SI
100 K
+SE
–SE
+EX
+EX +EX
+EX
–EX
–EX
–EX
–EX +SI
+SI
+SI
+SI
–SI
–SI
–SI
–SI SHD
SHD
SHD
SHD
23126
Rev. A
SHD
JU1 JU2
JU3
JU4
100 K
100 K 100 K
Potentiometers
Potentiometers

Adjustments and Calibration
© Rice Lake Weighing Systems ●All Rights Reserved 11
3.2 Calibration
See the indicator operation manual to determine indicator calibration procedures.
It recommended that the scale be exercised before calibration to be certain that everything is seated.
1. Load the scale to near capacity two or three times.
2. Ensure there is no load on the scale and place the indicator in its calibration mode.
3. Perform a zero calibration.
4. Place test weights equal to 70% – 80% of the scale capacity on the platform. When using several weights, distribute
them evenly around the platform.
5. Perform a span calibration.
6. Remove the test weights and check the zero reading.
7. Repeat the calibration process if necessary.

RoughDeck QC Floor Scale
12 Visit our website www.RiceLake.com
4.0 Service Information
4.1 Periodic Maintenance
Clean the space between the platform side and pit frame and the surface beneath the platform to prevent debris build up.
Use care with high pressure steam wash downs for hermetically-sealedload cells. The steam may not damage theload cells,
but the elevated temperatures may cause incorrect readings until the unit cools to room temperature.
4.2 Load Cell Replacement
Order replacement load cells from Rice Lake Weighing Systems.
IMPORTANT
Lift the scale only with a properly designed spreader bar as shown in Figure 2-2 on page 3. 
Lifting force must be vertical to avoid bending the eye bolts.
WARNING
Eye bolts must always be inserted into the top of the scale. Lifting should always occur with the top plate facing
up and the eye bolts securely attached through the nuts welded to the bottom sideof the top plate. Lifting from
the bottom of the plate could cause nuts to break loose and the scale to fall.
1. Remove foot from the load cell to be replaced.
2. Disconnect load cell cable from the junction box and cut cable ties.
3. Loosen the load cells screws to remove the existing load cell.
4. Pull the cable with the load cell out of the scale and discard.
5. Check that the threaded holes for theload cell screws are free of debris. Use compressedair to blow out holes if
necessary.
6. Position loadcellswithalignmentarrows pointedup toward the scale deck and loosely install the hexheadcapscrews
provided.
Figure 4-1. Load Cell Replacement.
7. Position the load cell to maintain the dimension.
8. Run the load cell cable through the conduit to the junction box. Route cables near each corner so cables are free from
contact with feet. See Section 4.2.1 on page 12.
9. Make a strain relief loop before routing the cables through the conduit.
10. Coil extra cable before it enters the junction box. Do not cut the load cell cables.
11. Pass the end of the load cell cable through the cable fittings in the junction box.
12. Wire the cable to the junction box. See Section 2.4 on page 4.
Corner correction, trimming, and calibration are necessary after replacing a load cell. See Section 3.0 on page 10.
4.2.1 Load Cell Wiring
Connect load cell cables to the junction box using corner numbering and Section 2.4.1 on page 4.

IMPORTANT
Service Information
© Rice Lake Weighing Systems ●All Rights Reserved 13
Do not cut the load cell cables.
Figure 4-2. Load Cell Cable Layout
4.3 Troubleshooting Guide
Table 4-1. Troubleshooting Guide.
Symptom Probable Cause Solution
System does not operate/no
display Power disconnected Check and reconnect
Indicator fuse blown Replace fuse, check for cause
Interface cable cut or disconnected Repair
Signal leads incorrectly installed at indicator Install according to indicator manual
Display stays at zero Faulty load cell connections Check cable connections in junction box at indicator
Faulty indicator Service the indicator
Erratic weights Vibration near scale Remove source of vibration or move scale
Platform not level to within 1/4'' Level the platform by adjusting feet or shimming
Load cell or cable water damage Replace load cell or cable
Debris under load cells or platform Clean
Indicator faulty Use simulator to test indicator stability; service indicator
Consistently high or low
weights Indicator not properly adjusted to zero Zero the indicator according to indicator manual
Platform binding Adjust clearance for free platform movement
Indicator not calibrated Calibrate according to indicator manual
Faulty load cells Test and, if necessary, replace load cells
Feet touching deck’s underside Adjust feet downward to provide clearance
4
12
3

RoughDeck QC Floor Scale
14 Visit our website www.RiceLake.com
4.4 Specifications
End Load Capacity:
100% full scale at 2,000 lb and 5,000 lb
80% full scale at 10,000 lb
Cable Length:
20' (6.1 m) (for connecting junction box to indicator)
Remote Junction Box:
Stainless steel enclosure can be located up to 10' away from scale
Welding:
Stitch, consult if continuous is required
Threaded Eye Bolt Hole:
1/2-20 NF located in center of deck for easy lifting
Warranty:
RoughDeck QC weldment five years, load cells two years, all other components one year
Approvals:
NTEP CC 92-001, Class III 5000 d
Load Cell Excitation
Rated Excitation: 10 VDC
Maximum Excitation: 15 VDC

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
December 13, 2017 PN 178041