Rice Lake SURVIVOR ATV series User manual

ATV
Portable Truck Scale
Assembly Instructions
68982

i
Contents
1.0 Installation Overview................................................................................................................... 1
1.1 Assembly Time Estimates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Recommended Equipment and Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Lifting and Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4 Serial Tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.0 Assembly...................................................................................................................................... 4
2.1 Deck Module Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Scale Relocation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.0 Connecting Electronic Equipment ............................................................................................... 7
3.1 Indicator to Peripherals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Single-Point Ground Conductor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 J-box Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 Electrical Ground Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5 Installing Transient Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.0 Trimming and Calibration.......................................................................................................... 10
4.1 Overview and Equipment Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Trimming Individual Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 Trimming Paired Sections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.4 Calibrating with Test Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.0 Load Cell Replacement.............................................................................................................. 13
5.1 Replacement Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2 End Cleanouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.0 Vehicle Scale Limited Warranty................................................................................................ 14
7.0 Assembly and Foundation Drawings ......................................................................................... 15
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be found at www.ricelake.com or obtained
by calling 715-234-9171 and asking for the training department
© 2007 Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America.
Specifications subject to change without notice.
Version 2.0, March 2007

ii ATV Portable Truck Scale Assembly Instructions

Installation Overview 1
Introduction
This manual is intended for use by technicians
responsible for installing and servicing the
SURVIVOR®ATV Series portable truck scale. The
ATV truck scale has been designed to significantly
reduce installation time. A well-organized,
experienced installation crew should be able to install
a typical three module 70' x 11' ATV truck scale in
less than 4 hours. This estimated time may vary.
NOTE: This booklet covers ATV portable truck scale
installations. Use these instructions as general installation
guidelines unless the engineering drawings furnished with
your scale differ from the instruction in this booklet.
Engineering drawings furnished with your scale always take
priority over these general installation guidelines.
Refer to the engineering drawings furnished with the scale for all
component numbering sequences.
Authorized distributors and their
employees can view or download this
manual from the Rice Lake Weighing Systems
distributor site at www.ricelake.com.
Package includes: Bolt-on backfill ramp bulkheads
(removable for concrete approaches); assembled
weighbridge modules and weighbridge fasteners; load cells
with conduit fitting; load cell mounts; copper transient
bypass cables at each load cell; metal conduit on
weighbridge for load cell cable runs; flexible conduit from
load cell to metal conduit; conduit fittings for flexible to
metal conduit; polycarbonate junction box(es); homerun
cable to indicator (60'long) and print packages including
installation manual.
Package does not include: peripherals; freight charges
including material handling/crane; transportation
permits and fees; escort(s) charge; or insurance
transportation fees.
1.0 Installation Overview
The modular sections of the ATV truck scale are shipped pre-assembled and ready to be placed on a flat surface
using a crane. The self-contained modules are positioned on a prepared and level site. The weighbridge is
lowered onto the load cells by retracting the shipping stands.
The indicator is connected to one of the two junction boxes (J-boxes). That J-box is then connected to the other
J-box via an expansion cable.
You can then back fill material to bulkheads and calibrate to finish the installation.
General Assembly Order
1. Based on location of the indicator, place the first self-contained module into position on level compacted
ground or other flat surface. Asphalt is not recommended.
Note: Be sure to arrange module with the J-box positioned toward the indicator.
2. Install spacer tubes and set the other self-contained module.
3. Place center (bridge module) between end modules.
4. Retract shipping stands.
5. Back fill material.

2ATV Portable Truck Scale Assembly Instructions
6. Connect to indicator and calibrate.
Figure 1-1. Weighbridge with Self-Contained Modules in Place
1.1 Assembly Time Estimates
When scheduling installation for a typical three-module, 70' truck scale, plan for a two-hour minimum crane
rental to place the modules into position. A two-man crew, aided by a crane operator, can unload modules from
the truck and place them into position in approximately one hour.*
Retracting shipping stands and backfilling material can be done in approximately 1–2 hours.* Load cells in
self-contained modules are pre-wired to the J-box at the factory. Connect expansion and/or homerun cable to
complete wiring in approximately 1/2 hour.*
*Note: these estimated times may vary.
1.2 Recommended Equipment and Tools
• Crane – maximum module weight is
approximately 12,500 lbs.*
• Four chains or cables (8' minimum length
each) with hooks
• One low-profile 4-ton bottle jack
• 5/16" allen wrench
• Hammers, maul, pry bar
• Socket wrenches to 1-1/2" (drive compatible
with torque wrench)Box end wrenches to
1-1/4"
• Open end wrench set (7/16" to 1-1/4")
• 4' bubble level
• Hand tools for pulling and connecting
electrical wiring
1.3 Lifting and Handling
Deck modules can be lifted (see Figure 1-2) using four chains or cables attached to the four gussets mounted on
the outside of the main beams. The gussets provide balanced lifting of the modules with bulkheads attached.
End
Modules
Spacer Tube
Load Cell Pockets
Bulkhead
Spacer
Tube
* Typical self-contained module weight of 70' x 11', three module scale.

Installation Overview 3
Figure 1-2. Unloading Modules From Truck
1.4 Serial Tag
The serial tag on an ATV Series portable truck scale truck scale is found at the end of the scale near the
SURVIVOR logo (see Figure 1-3). A duplicate tag is placed inside of the J-box pocket (see Figure 1-4).
Figure 1-5. Serial Tag Placement (Module)
Figure 1-3. Figure 1-4.

4ATV Portable Truck Scale Assembly Instructions
2.0 Assembly
The following sections detail deck module assembly, setting load cell mounts, and scale relocation.
2.1 Deck Module Assembly
NOTE: The bridge module is placed on truck last. Set it off to the side when unloading modules at installation site.
1. Considering the location of the indicator, place first self-contained module of the ATV into position on a
flat surface. Be sure to arrange module with J-box positioned toward indicator (see Figure 2-1).
Figure 2-1. Module Placement
2. Install spacer tubes to the first module using the supplied hardware (see Figure 2-2).
Figure 2-2. Spacer Tube Installation
3. Set other self-contained module to other end of spacer tube (spacer tube is used to ensure proper distance
between self-contained modules for installation of bridge module). This module should also be arranged
with J-box positioned toward indicator.
4. Remove load cell cover plates (requires 5/16" allen wrench) and place bridge module into receptacles on
self-contained modules.
NOTES:
•Before installing the bridge module, check for debris that may have fallen into the two pin-connection receptacles.
• If the pins do not seat squarely in the receptacles, raise the module slightly and reset the module. Check the modules for
proper alignment.
Figure 2-3. Pin and Receptacle Interface Figure 2-4. Two Self-Contained Module Connection
(No Bridge Module)
Indicator
Self-contained module Self-contained moduleBridge module
J-box J-box
23’ 2”

Assembly 5
2.2 Setup
1. Back off shipping bolts located on ends of weighbridges (four for each self-contained module) until each
bolt is no longer inserted in the scale (see Figure 2-5).
Figure 2-5. Weighbridge Shipping Bolts
2. Remove the bolt which connects the stand to bulkhead base (see Figure 2-6). Re-install this bolt in the
bulkhead base after the stand is raised in Step 4.
Figure 2-6. Bolt Connecting Stand to Bulkhead Figure 2-7. Hitch Pin and Chain
3. Install jack under corner of scale and remove weight of scale from stand located in load cell pocket.
4. Remove hitch pin that holds the stand up (see Figure 2-7).
Lift stand up with chain located inside load cell pocket (See Figure 2-7).
Re-install the bolt and hitch pin previously removed, and the stand will hold in the retracted position.
5. Slowly lower weighbridge onto load cell link and remove jack.
Repeat for all load cell pockets.
6. Connect expansion cable between J-boxes on self-contained modules.
7. Wire homerun cable and indicator.
8. Apply anti-sieze compound to bolt threads and install load cell cover plates.
9. Install bolt-on wings (shipped on pallet). See Figure 2-8.
Figure 2-8. Bolt-on Wing
10. Back fill material against bulkheads to establish a ramp and approach as needed.
11. Calibrate the scale (see Section 4.0 on page 10).
Shipping Bolt
Stand/Bulkhead
Connection
Bolt
Pin
Chain
Bolt-on Wing

6ATV Portable Truck Scale Assembly Instructions
2.3 Scale Relocation
Use the following steps when relocating the ATV portable truck scale series truck scale.
1. Remove load cell cover plates.
Figure 2-9. Load Cell Cover Plate Removed
2. Remove hitch pin that holds stand in retracted position (see Figure 2-9).
3. Jack up each corner of module until hitch pin can be re-installed in shipping position.
4. Install bolt connecting stand to bulkhead base (see Figure 2-6 on page 5).
5. Install shipping bolts on end of modules (see Figure 2-5 on page 5).
6. Remove homerun cable and expansion cable.
7. Remove spacer tubes.
8. Remove backfill material.
9. Relocate modules starting with bridge module.
Chain Pin Load
Cell
Wiring

Connecting Electronic Equipment 7
3.0 Connecting Electronic Equipment
Sixty feet of six-wire homerun cable is supplied for
wiring the J-box to the indicator. It is best to run this
in 3/4" galvanized metal or plastic conduit from the
J-box to the indicator. Conduit for this purpose and for
connecting peripherals is to be obtained locally. A
section of flexible conduit with connector is provided
where this cable exits the load cell pocket. Do not run
any other electrical cables in or near the conduit to the
indicator.
3.1 Indicator to Peripherals
Conduit runs may be buried in a trench or secured
above ground. Use separate conduit runs for AC
power and DC data lines to avoid interference. As a
general guideline, run AC and DC cables in separate
trenches if possible. When DC data cables must run in
the same trench as AC power lines, separate cables as
much as possible.
Figure 3-1. Conduit Run in Trench
3.2 Single-Point Ground Conductor
A bare 10 gauge solid wire is run from the scale frame
to the main AC power earth ground. If DC transient
protection is included, it must be properly grounded to
function correctly.
3.3 J-box Connections
Each J-box contains a JB8SPT summing board with
DC transient protection devices. A desiccant such as
the RLWS Industrial Corrosion Inhibitor (PN 16037)
should be added to the J-box before final closure.
Each self-contained module has a single J-box located
in the J-box pocket. A summing card mounted within
the J-box is used to make all cable terminal
connections. All terminal pins are clearly marked as to
function.
3.4 Electrical Ground Connections
Improper grounding systems on outdoor
truck scales often cause corrupted data
from ground-loop current flows and costly
lightning damage to electronics.
Always strive for a single-point grounding system
(see Figure 3-3 on page 9). Do not drive ground rods
at the scale location to establish separate earth
grounds for the scale. These separate earth grounds do
not share the same zero reference as the existing earth
ground for the AC power system. This difference in
electrical potential invites ground-loop current flow
between the separate grounds, often corrupting serial
data like RS-232 which depends on a stable zero
reference.
In addition, a separate earth ground system at the scale
can actually invite lightning or power surge damage:
• A minor powerline surge in the scale house
electrical supply should immediately be
shunted to ground. If a separate ground
system exists at the scale with a lower
potential than the main ground, the surge may
travel out to the scale ground rod, damaging
load cells on its way.
• A nearby lightning ground strike may
instantly raise the zero potential of a ground
rod at the scale location, while leaving the
scale house ground rod unaffected. That
lightning surge now takes the easiest path to
the lower-potential ground—through the scale
wiring and back to the scale house ground,
possibly damaging the indicator on its way.
Therefore, the best grounding system for the scale is
the same one used for the incoming AC power system.
The 120 VAC power source used to power the
indicator is connected to an existing earth-grounded
rod system at the scale house or other building where
the indicator is located. This should consist of a
double ground rod system of two 5/8" x 8' copper rods
driven 8' deep at the service entrance where the local
utility company brings their lines into the building.
The local utility company can test the resistance of the
existing ground rods with a clamp-on megohmeter
that measures zero resistance. A reading of 3¾ or less
is acceptable as a ground. If the test determines that
the grounding system is inadequate, the utility
company can suggest methods to improve the system.
It is crucial that the scale owner authorize and make
the recommended improvements to ensure an
adequate electrical ground. Do not connect the scale
to the AC power supply until the grounding system is
adequate.
Caution

8ATV Portable Truck Scale Assembly Instructions
Be certain each load cell grounding strap is securely
connected to the top plate and bottom plate of each
load cell mount. Some models have ground straps
included to install between modules. These
inter-module straps ensure that the entire scale is
connected to the same single-point ground. There
should be metal-to-metal contact with no presence of
paint or grout. This strap is designed to channel power
surges on the deck around—rather than through—the
load cell to ground. A thick coating of anti-oxidant
grease should be maintained on all ground
connections to prevent corrosion.
A separate grounding system conductor must extend
uninterrupted from the main service panel ground to
the scale to protect load cells and scale wiring from
lightning and other transient damage. This ground
wire conductor must be an unsheathed #10 copper
wire or larger. Run the bare ground wire conductor
intact from the AC power ground rod to the scale in a
separate trench. Bring the wire up from the trench
near the J-box and attach it to the ground lug located
in the J-box pocket. This grounds the scale frame to
the same single-point ground as the AC power for the
indicator.
A ground wire is included to attach the J-box ground
lug to the ground lug located in the J-box pocket.
Grounding of the J-box is essential for operation of
the DC transient protection incorporated into the
J-box.
3.5 Installing Transient Protection
A two-year lightning protection package comes standard all truck scales. The individual components of this
comprehensive package are designed to protect AC and DC portions of the system. The lightning protection
package includes:
• DC transient protection included with standard J-box board(s). This DC transient protection handles up
to eight load cells. Scales with more than eight load cells require additional J-boxes.
• Self-contained DC transient protection unit in the homerun cable at the indicator.
• A 115 VAC uninterruptable power supply/surge protector in the AC line before the indicator.
• Number 10 bare ground conductor cable buried in earth from scale frame to DC transient board at
indicator and finally to the AC power ground lug.
Figure 3-2. Grounding and Transient Protection on ATV Scale
NOTE: Serial communications (if used) may also require transient protection to fully protect entire system. A TP-232 DC Transient
Protection is suitable protection for serial communications lines. In addition, printers, remote displays and other devices
connected to serial communications should be protected with AC transient protection.
10 ga. bare ground wire to DC
protection ground before indicator
Ground Lug
Located in
J-box Pocket

Connecting Electronic Equipment 9
AC Power
Supply
#10 Copper
Ground Wire
Serial
Communication
Homerun
Cable
Load Cell
Cable
UJB-3T6
DC Transient Protection
RLWS PN 21134
TP-232
DC Transient Protection
RLWS PN 33185
TP-232
DC Transient Protection
RLWS PN 33185
SOLA S2K
AC Transient Protection
RLWS PN 80928
AC Outlet
SOLA S2K
AC Transient Protection
RLWS PN 80928
AC Outlet
Power Company Ground Rod
*Always verify that installed wiring is properly grounded
JB8SPT
Junction Box
With Transient Protection
RLWS PN 91783
R41
JP17
JP7
R52
R50
R40
R24
R14
R15
JP20
JP10
R26
R51
R49
R47
JP16
R45
R43
JP9
R23
R21
JP6
JP8
R17
R38
R36
R34
JP11
R32
R30
R28
R10
R8
JP1
R4
R2
R33
JP12
JP2
VR9
JP19
R48
VR7
JP18
R42
R44
R22
R25 R16
R18
VR2
R19
R39
VR10
R35
R37
VR11
R27
R29
R31
R9
R11
R12
R1
R3
R5
VR5
R6
JP5
JMP/NEGJMP/POS
VR8
VR3
VR1
VR12
VR6
J1
VR4
J2 R13
R7
EXPANSION/J9
J5
ARC
R46
JP4
JP3
ARGND
JP14
JP15
JP13
L3
L4
L2
J8
J4
J3
J6
L1
R20
J7
INDICATOR/J10
JP
TRIM
TRIM
TO
-EX
+EX
+SI
-EX
+EX
+SI
-EX
+EX
1
+SI
-EX
+EX
+SI
JP
JP
TO
SIGNAL
2005
SIGNAL
CUT TO
DISABLE
CUT
CELL# CELL# CELL#
SHD
1
SHD
-SI
1
-SI
SHD
-SI
1
-SI
SHD
SIGNAL
CUT TO CUT
SECT#
DISABLE
CELL# CELL#
SIGNAL SIGNAL SIGNAL
D
L
D
DISABLE
CELL#
SECT#
DISABLE
CELL#
RICELAKE WEIGHING SYSTEMS
JP
-EX
+EX
+SI
-EX
+EX
+SI
-EX
+EX
+SI
-EX
+EX
+SI
SIGNAL
TRIM
TRIM
TRIM
TRIM
TRIM
TRIM
Assembly
-EX
-EX
+EX
+SI
SHD
1
SHD
-SI
1
-SI
1
-SI
SHD
1
-SI
SHD
CONNECTBOTHSHUNTS
TOAPPLY SIGNAL
SECT#
SIGNAL SIGNAL SIGNAL
CELL#
PNRev.
+SI
-SI
-SI
SECT#
+SEN
SHD
+SEN
SHD
DISCONNECTBOTHSHUNTS
TOREMOVE SIGNAL
+EX
-SEN
-SEN
CUTTRACETO ISOLATESENSE LINE
TransientBoard Connectors
GroundingLug
Figure 3-3. Single-Point Grounding Diagram

10 ATV Portable Truck Scale Assembly Instructions
4.0 Trimming and Calibration
The following section describes steps in trimming individual cells and pairs of cells, and calibration of the ATV
truck scale. See J-box instructions located in the J-box for details on trimming.
4.1 Overview and Equipment Required
Load Cell Trimming
Individual load cell signal trimming (equalizing the signal output from each load cell) must be done first along
each side of the scale so all cells on a side have equal signal output. Adjustments can be interactive, so each side
should be done at least twice.
Once that is done, load cell pairs—one from each side—are trimmed as paired sections until each sectional output
is equal. Adjustments to each section should also be done at least twice.
Figure 4-1. Load Cell Trimming Diagram
Equipment Required
Both of these trimming operations can be done using a
weight cart parked in various locations on the scale.
Final verification of equal output trimming, however,
requires test weights to be placed on the deck in
various locations.
4.2 Trimming Individual Cells
Connect all load cells to the summing board terminals
in the J-box and connect the main interface cable from
the J-box to the indicator. Power up the indicator.
Turn all load cell potentiometers (individual and
section) in the J-box clockwise so all signals are at full
strength. Refer to the J-box instruction manual for
proper set-up of jumpers and dip switches prior to
trimming, then proceed to individual cell trimming.
Side 1
The first objective is to adjust individual load cells
along one side of the scale for equal signal output
when equal weight is put on those cells. For
convenience, that side of the scale is referred to as
side 1. The trimming weight you use is the loaded
weight cart.
1. Park the cart as close as possible to side 1
being trimmed with the wheels centered over
the end load cell mount (No. 1 in Figure 4-2).
Record the indicator reading. Remember that
the scale is still uncalibrated, so the indicator
readings are simply raw counts rather than
weight units.
Figure 4-2. Trimming Load Cell Number One
2. Move the cart directly over mount No. 2 and
record that reading. Move the cart directly
over mount No. 3 and record that reading.
Move the cart so the wheels are centered
directly over mount No. 4 (you may have to
turn the weight cart around so all wheels
remain on the scale) and record the reading.
Figure 4-3. Trimming Load Cell Numbers 2, 3, and 4
143
2
85 67
1st – Trim Side 1 Cells (1, 2, 3, 4)
2nd – Trim Side 2 Cells (5, 6, 7, 8)
3rd – Trim Sections
(1,8; 2,7; 3,6; 4,5)
Weight
Cart
Junction Box
143
2
85 67
143
2
85 6
7

Trimming and Calibration 11
3. The lowest reading of the four is the reference
cell. Do not change that cell’s signal. Instead
use the individual cell potentiometers for the
other three cells to reduce those signals to
match your reference cell. Remember that you
turned all pots to full signal before starting, so
you can not increase the signal from any cell
— only decrease signal by trimming with the
pots.
4. Note that the best trim is always the least trim.
If one of the four readings differs from the
others by more than 5% of the displayed
counts, there is probably a mechanical
problem with that load cell mount causing the
large difference. Find it and correct it before
going on. Check for binding, an out-of-level
or misaligned link, or similar problems with
the load cell and mount. Do not try to trim
down large signal differences with resistance
pots — that only adds larger problems later
because of interaction between mounts.
5. Park the loaded weight cart over one of the
high-reading cells on side 1. Turn that cell’s
individual potentiometer until the displayed
reading equals your recorded reference cell
reading. Repeat for the other two high-reading
cells on side 1.
6. As adjustments are somewhat interactive,
repeat the process in steps 1 – 5 until all four
cells on side 1 read within .1% of each other.
7. Repeat steps 1 – 6 for load cells 5 – 8 on side
2 of the scale.
4.3 Trimming Paired Sections
Now that all individual load cells are trimmed for
equal output, pairs of load cells on opposite sides of
the scale must be trimmed for equal sectional output.
This process is called section trimming.
1. Park the loaded weight cart in the middle of
the scale and directly over an imaginary line
connecting an end pair of cells (1 and 8 in
Figure 4-4). Record the indicator reading.
Figure 4-4. Trimming Paired Section 1:8
Move the weight cart directly over the next paired cell
section (2, 7 in Figure 4-5) and record the indicator
reading. Do the same for the last two paired sections
(cells 3, 6 and 4, 5).
Figure 4-5. Trimming Paired Sections 2:7, 3:6, and 4:5
2. Choose the lowest reading of the four as your
reference section, which is not adjusted.
Using the section potentiometers, reload the
other three sections in turn and trim the
sections to match the reading of the reference
section. Recheck section readings a second
time as the adjustment made can be somewhat
interactive.
3. As a final verification of the load cell
trimming, do a final corner check. Place a
1000 lb weight on one corner of the platform
and record the raw-count reading on the
indicator. Move the weight to all of the other
corners in turn and record those readings. The
readings should be within .1% of each other.
4.4 Calibrating with Test Weights
The calibration procedure can only be done after all
trimming as described above has been completed. A
qualified scale technician with a test weight truck and
the expertise to access the scale indicator’s setup or
calibration mode must perform the calibration
procedure.
Figure 4-6. Calibration with Test Weights
143
2
85 67
143
2
85 67
143
2
85 67

12 ATV Portable Truck Scale Assembly Instructions
Equipment Required
Truck scales are routinely calibrated using 25% of the capacity weight of the scale. Certified Class F test weights
equaling at least 12.5% of the scale’s capacity are required for calibrating a commercial legal-for-trade truck
scale. In addition, some type of weight for a substitution test of an additional 12.5% of the capacity is required.
This can be the test-weight truck, bags of sand, or any convenient items easy to load onto the scale. This total
calibration weight of 25% of scale capacity (12.5% test weights, 12.5% substitution weight) is required by
weights and measures officials for commercial truck scales in most states. Check with your local weights and
measures officials for the requirements in your jurisdiction.
Industrial scales not used for legal-for-trade transactions do not require certified test weights. Weight equal to
25% of scale capacity is recommended for calibrating such scales.
See NIST Handbook 44 for detailed calibration requirements and procedures.

Load Cell Replacement 13
5.0 Load Cell Replacement
5.1 Replacement Procedure
1. Position jack beneath one of the weighbridge’s main frame members close to the load cell mount. (Allow
room for load cell removal and installation.) Raise jack approximately 1/2" and put setting block(s)
under the scale deck.
2. Disconnect the load cell terminal connections in the junction box.
Disconnect the flex conduit from the rigid conduit at the frame.
NOTE: Attach a pull cord to the load cell
cable at the junction box before pulling the
cable through the conduit.
3. Pull the load cell cable out of the
conduit.
4. Remove the two load cell bolts and lift
out load cell and link assembly.
5. Remove 90° conduit connector and
flexcable. Install 90° conduit
connector and flex conduit on new
load cell in the same position as was
removed.
6. Install link over new load cell.
Reinstall load cell and link assembly
onto the baseplate. Install load cell
mount bolts and torque to 50 – 75 ft-lb.
7. Pull load cell cable through conduit using pull cord. Make a loop in flex conduit between the load cell
and the rigid conduit. Reconnect flex conduit to rigid conduit.
8. Remove setting blocks and lower scale module so that it rests on the link. Check link to verify that it is
centered and plum.
9. Connect wiring to terminals in junction box.
NOTE: RLWS has 1/4" (PN 67293), 1/8" (PN 67294) and 1/16" (PN 67291) shims available to level scale. Do not exceed
over 3/4" of shims combined. If more is necessary, contact RLWS for other options.
5.2 End Cleanouts
End cleanouts are standard on all ATV truck scales. Simply remove the bolts and cover plate to gain access.
Apply anti-seize compound to bolt threads prior to re-installing cover plate.
Figure 5-1. End Cleanouts with bolts and cover plate removed
Caution
As a safety precaution, always use setting blocks when jacking scale module.
Load
Cell
Load Cell Bolts
Link
Baseplate Figure 0-1. Load Cell Replacement

14 ATV Portable Truck Scale Assembly Instructions
6.0 Vehicle Scale Limited Warranty
Rice Lake Weighing Systems (RLWS) warrants that all RLWS brand equipment and systems properly installed
by a Distributor will operate in accordance with written specifications as confirmed by the Distributor and
accepted by RLWS. All systems and components are warranted against defects in materials and workmanship for
2 years from date of shipment from the manufacturer. Furthermore, the seller warrants the fabricated
weighbridge against faulty workmanship and defective materials for 5 years from date of shipment from the
manufacturer.
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:
•Upon discovery by Buyer of such non-conformity, 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 pre-
vent electrostatic discharge (ESD) damage in shipment. Packaging requirements are listed in a publi-
cation, “Protecting Your Components From Static Damage in Shipment,” available from RLWS
Equipment Return Department.
•Examination of such equipment by RLWS confirms that the non-conformity 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 non-conformities.
•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.
•Vehicle scale products are eligible for warranty labor and mileage charges with pre-approval by
RLWS Service Department, and only to the limits described in the vehicle scale reimbursement pro-
gram.
•RLWS will not 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 BE LIABLE FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
RLWS AND BUYER AGREE THAT RLWS’ SOLE AND EXCLUSIVE LIABILITY HEREUNDER IS
LIMITED TO REPAIR OR REPLACEMENT OF SUCH GOODS. IN ACCEPTING THIS WAR-
RANTY, THE BUYER WAIVES 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.
© 2003 Rice Lake Weighing Systems, Inc. Rice Lake, WI USA. All Rights Reserved.
RICE LAKE WEIGHING SYSTEMS • 230 WEST COLEMAN STREET • RICE LAKE, WISCONSIN 54868 • USA

ATV Portable Truck Scale Assembly Instructions 15
7.0 Assembly and Foundation Drawings
Figure 7-1. 70’ x 11’ ATV Assembly Drawing

16 Assembly and Foundation Drawings
Figure 7-2. ATV Single Module (30') Assembly Drawing