2. RW
  3. Onboard Load Scale
Onboard Load Scale

RW Onboard Load Scale User manual

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ONBOARD LOAD SCALE
EXTERIOR DIGITAL | AIR / SPRING SUSPENSION
2
LOW
Thank you for choosing to drive more and scale less! Here at Right




(503) 628-0838
(888) 818-2058 - Toll Free (USA ONLY)


FOLLOW US!
WELCOME
2
IMPORTANT!



the vehicle.








www.rwls.com/warranty.
      
 

Trailer
Straight Truck
Sensor Checking / Adjustment

Set / Change Security PIN Code



 
Warranty Statement & Return Policy
4
5
8
8
9
10
12
13
14
15
17
18
19
CONTENTS
3
ONBOARD LOAD SCALE
EXTERIOR DIGITAL | AIR / SPRING SUSPENSION










4
7-¼”
5”
2”
POWER
ON/OFF
MENU/
ENTER
(1)
CAL HIGH (2)
CAL LOW (3)
DOWN ARROW
(4)
UP ARROW
62 mm
127 mm
406 mm
87 mm
184 mm
208 mm
114 mm
114 mm
Scan here to download the “Right


Right Weigh Load Scales App:
Scan here for instrucons

along with a video tutorial
Technical Specificaons:
5
SCALE INSTALLATION
& ELECTRICAL CONNECTIONS
INSTALL NEW STREET TEE FITTING
4

tee.
Air Bag
Air Bag
Street tee
tting
Air Bag




5
INSTALL NEW 1/4” AIR LINE

INSTALL STRAIN SENSOR(S)
1



manufacturer. Doing so may void the warranty with the vehicle manufacturer.
CHOOSE LOCATION
2




DUMP AIR FROM SUSPENSION SYSTEM
3
!


!

(2 air sensor models only)
7


Air Bag HCV 1
Air Bag HCV 2
SCALE INSTALLATION
& ELECTRICAL CONNECTIONS
6
ROUTE AIR LINE TO GAUGE
6





INSTALL CONNECTION HARNESS
8
i

(OPTIONAL)
STRAIN SENSOR CONNECTIONS










STRAIN SENSOR
CONNECTIONS
POWER CONNECTION
RED = POWER

RS-232 FORWARD
CONNECTION
HARNESS
i
iii
ii
SECTION 1
SECTION 2
ii
7
SCALE INSTALLATION
& ELECTRICAL CONNECTIONS
RED wire to a


POWER CONNECTION

9


 
 
 
 
iii
DO NOT connect directly to a baery or any constant power source, gauge should be connected to a switched
source so that it can be disconnected from power when not in use. Most users connect the power to vehicle
marker lights or the AUX/ABS wire.
Electrical connecons MUST be insulated, see Appendix B for instrucons.
!
If you need to change the number of strain sensors at any point, follow these steps:
1. Turn off the scale
2. Press and hold the C HIGH buon and the MENU buon, press the POWER buon, then release all 3
3. Use the UP arrow buon to change the number of strain sensors to the number desired
4. Turn off the scale to save seng
Please note that by changing the number of strain sensors the scale recognizes, all calibraon data will be LOST
!
8
OPERATING MODES
www.rwls.com
ON/OFF
HOLD 3 SECONDS
CALIBRATE
C
HIGH
1C
LOW
234
ENTER
MENU
i
EL-003-0004
1 2 3 4 C/H C/L KG LBS
www.rwls.com
ON/OFF
HOLD 3 SECONDS
CALIBRATE
C
HIGH
1C
LOW
234
ENTER
MENU
i
EL-003-0004
1 2 3 4 C/H C/L KG LBS
Axle Group 1 - Fixed Spring Suspension Single or Tandem Axle Group
Axle Group 2 - Air Li Axle
www.rwls.com
ON/OFF
HOLD 3 SECONDS
CALIBRATE
C
HIGH
1C
LOW
234
ENTER
MENU
i
EL-003-0004
1 2 3 4 C/H C/L KG LBS
www.rwls.com
ON/OFF
HOLD 3 SECONDS
CALIBRATE
C
HIGH
1C
LOW
234
ENTER
MENU
i
EL-003-0004
1 2 3 4 C/H C/L KG LBS
VEHICLE CONFIGURATION OPERATING MODE
Axle Group 1 - Fixed Spring Suspension Single or Tandem Axle Group
Axle Group 2 - Front Air Li Axle
Axle Group 3 - Back Air li Axle
12
13
2






PRESS
HOLDING
PRESS
CHANGING OPERATING MODES

SA-AA
SA-Ai

AIR SUSPENSION SPRING SUSPENSION
TRAILER



1
2
The load scale can only be setup in one operang mode at a me. If the mode is changed, the calibraon
data will be reset to factory defaults, requiring re-calibraon.
!
9
OPERATING MODES
1 2
Axle Group 1 - Leaf Spring Steer
Axle Group 2 - Air Suspension Drive Axle Group with
1 or 2 HCV
www.rwls.com
ON/OFF
HOLD 3 SECONDS
CALIBRATE
C
HIGH
1C
LOW
234
ENTER
MENU
i
EL-003-0004
1 2 3 4 C/H C/L KG LBS
www.rwls.com
ON/OFF
HOLD 3 SECONDS
CALIBRATE
C
HIGH
1C
LOW
234
ENTER
MENU
i
EL-003-0004
1 2 3 4 C/H C/L KG LBS
VEHICLE CONFIGURATION OPERATING MODE
Axle Group 1 - Twin Spring Steer
Axle Group 2 - Air Suspension Drive Axle Group with 1 or 2 HCV
Axle Group 1 - Leaf Spring Steer
Axle Group 2 - Air Suspension Drive Axle Group with 1 HCV
Axle Group 3 - Air Li Axle
Axle Group 1 - Twin Spring Steer
Axle Group 2 - Air Suspension Drive Axle Group with 1 HCV
Axle Group 3 - Air Li Axle
3
12
2
1
13
2


& ADJUSTMENT
10
Only perform the following checks when the vehicle is empty



ADJUST STRAIN SENSOR


With the gauge displaying the sensor value that needs adjusted,
remove the sheet metal cover of the corresponding strain
sensor.



range is within 6.500 and 7.500.

strain sensor(s).
ENTER DIAGNOSTICS MENU

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
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
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REPEAT FOR ADDITIONAL SENSORS
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



CHANGING UNITS



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
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
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


rs.
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
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









weight, etc.
!
SET/CHANGE PIN CODE
OPTIONAL
13





again to save the code.






“Good”.


PRESS
HOLDING
PRESS
HOLDING
PRESS
PRESS
PRESS




SET PIN CODE
CHANGE PIN CODE
OPERATE & WEIGH
14










15
 CAUSE SOLUTION

Weight Readings

a level surface
Park on level concrete ground.



if one or more of the












Check air lines for leaks. Having a leak could cause the
















Gauge Will Not


not changing






to the Gauge
Scale is connected to a




wire). 

reconnected to work again.
Scale is connected to
another device

through your device.
 



Gauge reading “noAir” 
not receiving air (If 2 air
sensors are set to Average
mode and one isn’t
receiving air, gauge will read
noAir message)








the gauge will read the noAir message.

16
Scale Does Not Power
On
Scale is not connected to a








Scale is connected directly







on.
Polarity is incorrect


Cannot Change



code





 CAUSE SOLUTION
17
APPENDIX A



1/4 Inch Air Line
Street Tee Fing
Male Straight Fing
20 or more Zip Ties


(1/4” NPT or 3/8” NPT)



18




Aer all connecons have been made, heat shrink
the enre group of splices so that it seals on the
outer jacket of both cables.
With a heat gun or heat torch, heat the connector
unl it shrinks completely around each wire end.
Make sure you do not burn the wire jacket.
After crimping and heat shrinking
Add heat shrink
After heat shrinking
Crimp each end of the wire into the connector with
a wire crimp tool (tool not provided).
WARRANTY & RETURN POLICY
19
Warranty Statement














Return Policy and Authorizaon








Repairs/Replacements


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
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PP-003-0028 Revision G
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Thank you for choosing to drive more and scale less! Here at Right
Weigh, we are commied to making our products simple to install and
easy to use. We understand that installaon can vary between vehicles
and yours may not be described in this manual. In any event, our
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