RW Onboard Load Scale Exterior Digital Air Spring Suspension Instruction Manual

Onboard Load Scale Exterior Digital Air Spring Suspension
Instruction Manual ONBOARD LOAD SCALE
EXTERIOR DIGITAL | AIR / SPRING SUSPENSION ****

WELCOME

Thank you for choosing to drive more and scale less! Here at Right Weigh, we are committed to making our products simple to install and easy to use. We understand that  installation can vary between vehicles and yours may not be described in this manual. In any event, our technical support team is ready to answer your questions!
503-628-0838 888-818-2058 – Toll Free (USA ONLY)
****support@rwls.com
www.rwls.com/how-to-calibrate- install/

IMPORTANT!
Please read instructions COMPLETELY and thoroughly before installation. Right Weigh, Inc. is not responsible or liable for any negative consequences as a result of  improper installation or operation including, but not limited to, product failure or damage that could affect the integrity of the vehicle.
The installation steps in this manual are for the sole use of trained installers. Right Weigh, Inc. accepts no responsibility or liability for issues involving, but not limited to,  incorrect installation that occur from misinterpretation of the steps outlined in this document.
It is the end user’s responsibility to be aware of vehicle manufacturer policies before making modifications to the vehicle. Right Weigh, Inc. is not liable or responsible for  issues regarding, but not limited to, warranties with other manufacturers. This is the responsibility of the end user. For a more detailed explanation of the the warranty and  liability of Right Weigh, Inc. please refer to the “Warranty Statement” and “Return Policy & Repairs” section of this document and www.rwls.com/warranty
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ONBOARD LOAD SCALE
EXTERIOR DIGITAL | AIR / SPRING SUSPENSION ****

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc.
and any use of such marks by Right Weigh, Inc. is under license. Other trademarks and trade names are those of their respective owners.

SPECIFICATIONS & OVERVIEW

Right Weigh Load Scales App:

Scan here to download the “Right Weigh Load Scales” App directly from the App store| Scan here for instructions about how to connect to your scale(s) and use the  app along with a video tutorial

Technical Specifications:
Operating Temperature: -22° F to +185° F (-30° C to +85° C)
Storage Temperature: -40° F to +185° F (-40° C to +85° C)
Power Requirement: 9 VDC to 32 VDC (Switched)
Units: Pounds (LBS) or Kilograms (KG)
Housing: High impact polycarbonate blend
Display: 0.8” LCD sunlight readable

SCALE INSTALLATION & ELECTRICAL CONNECTIONS

1. INSTALL STRAIN SENSOR(S)
   Follow the steps on the 218-SK or 221-SK Installation manual(s) to install all strain sensors onto the vehicle.

2. CHOOSE LOCATION
   The 201 series scale is designed to be mounted on the outside of a truck or trailer, however it must still be mounted in a protective enclosure. A protective box and  mounting bracket are included with the 201 scale. Be sure to choose a location that is easily accessible and safe from potential damage (forklift posts, tire caps, etc.)

**** DO NOT mount the scale directly to the chassis or any other main beam unless it is approved by the vehicle manufacturer. Doing so may void the warranty with the vehicle manufacturer.
Mount the bracket in the chosen location and install the gauge box to the bracket using supplied hardware.

**** Make sure to use BOTH supplied mounting bolts to secure the bracket to the vehicle. Using only one bolt can result in a cracked bracket and the scale falling off the vehicle.

DUMP AIR FROM SUSPENSION SYSTEM
INSTALL NEW STREET TEE FITTING

Remove the suspension air line fitting from the top of one of the air bags. Insert a street tee fitting into the top of the air bag that matches the thread size of the vehicle suspension. Reinstall the suspension air line and fitting into the street tee. For more information on the parts needed for air line installation, see Appendix A.

INSTALL NEW 1/4” AIR LINE
Install a new 1/4” air line and fitting into the remaining port on the tee.

ROUTE AIR LINE TO GAUGE
Route the new 1/4” air line from the tee fitting assembly to the gauge. Secure air line with zip ties. Insert the air line into the push-to-connect fitting on the back of the gauge. DO NOT ROTATE THE AIR FITTING!
REPEAT FOR SECOND HCV (2 air sensor models only)
For 201-217-32 installations, repeat steps 3-5 on an air bag attached to the second HCV.

INSTALL CONNECTION HARNESS

Insert the threaded male connector on the harness onto the female connector on the back of the scale. Make sure to orient the connector properly so that the small cutout on  both connectors line up. Once the connector has been pressed in, thread the collar into the scale until it is hand tight.

STRAIN SENSOR CONNECTIONS
On section 1 of the Connection Harness (labeled on image above), there are 3 pairs of wires for 3 different strain sensor connections (check wire labels to distinguish between  strain sensor A, B, and C). Use the butt connectors in the strain sensor installation kit to connect strain sensor A wires to strain sensor A on the vehicle. The polarity  of the strain sensor wire connections is not important. Refer to installation overview to identify which sensor is sensor A.
Complete connection for strain sensors B and C, if applicable.
Make sure all electrical connections are properly insulated, please see Appendix B for additional instructions.

RS-232 FORWARD & BACKWARD CONNECTION (OPTIONAL)
This connection is for RS-232 communication (use is optional). Use the RS-232 connectors to connect the gauge to a telematics device that supports RS-232 communication. For more information about this feature, please contact Right Weigh technical

POWER CONNECTION
The two unterminated wires coming out of section 2 of the harness are used to power the scale. Connect the RED wire to a switched positive (+) power source and the  BLACK wire to chassis ground (-). The required supply voltage must be between 9 and 32 volts DC. For more information on wiring connection and insulation, see Appendix B.
**** DO NOT connect directly to a battery 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 connections MUST be insulated, see Appendix B for instructions.

SET NUMBER OF CONNECTED STRAIN SENSORS
Once the gauge is connected to power, it will automatically turn on and display “bAr -” on the screen. Set the gauge to the number of strain sensors that are connected to the  gauge using the UP arrow button:
bAr 0 = 0 strain sensors
bAr 1 = 1 strain sensor
bAr 2 = 2 strain sensors
bAr 3 = 3 strain sensors (not applicable – will result in set up error)

**** 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 button and the MENU button, press the POWER button, then release all 3
3. Use the UP arrow button to change the number of strain sensors to the number desired
4. Turn off the scale to save setting
   Please note that by changing the number of strain sensors the scale recognizes, all calibration data will be LOST

OPERATING MODES

Each vehicle configuration requires a specific operating mode. The modes available on this gauge are:
SA-AA -Straight Truck, Tractor, or Trailer; One spring suspension axle group and one air suspension axle group or lift axle
SA-Ai – Straight Truck, Tractor, or Trailer; One spring suspension axle group and two air suspension axle groups or lift axles
See the tables on the following pages to find your vehicle configuration and set the gauge to the corresponding operating mode.
The load scale can only be setup in one operating mode at a time. If the mode is changed, the calibration data will be reset to factory defaults, requiring re-calibration.

CHANGING OPERATING MODES

With the scale OFF, press and hold both the UP and DOWN arrow buttons, and then press the ON/OFF button. Release all 3 buttons. The scale will display the current mode.

Press the UP arrow button to cycle through the operating modes. To confirm your selection, turn the scale off by pressing the ON/OFF button.

The numbers on the images indicate the axle groups that will be displayed on the gauge. To cycle through the axle group on the gauge, press the MENU button.

TRAILER

Axle Group 2 – Front Air Lift Axle
Axle Group 3 – Back Air lift Axle|

STRAIGHT TRUCK

Axle Group 2 – Air Suspension Drive Axle Group with
1 or 2 HCV|
| 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 Lift Axle|
| Axle Group 1 – Twin Spring Steer
Axle Group 2 – Air Suspension Drive Axle Group with 1 HCV
Axle Group 3 – Air Lift Axle

SENSOR CHECKING & ADJUSTMENT

At this time, you should have the scale and all strain sensors installed onto your truck. Once this is complete, it is time to adjust the strain sensor(s).
**** Only perform the following checks when the vehicle is empty

ENTER DIAGNOSTICS MENU
With the scale turned off, hold down the MENU button and then press the ON/OFF button – release both at the same time. This will display the software version on the scale.

CHECK SENSOR VALUES
Press the MENU button three times; a four digit number will appear representing the raw output from sensor A.
For applications with multiple sensors, press the UP ARROW to see the values for sensors B and C.

If all sensor value(s) are between 6.500 and 7.500, no adjustment is needed. Move on to step 5

ADJUST STRAIN SENSOR
In this example, strain sensor A is out of range and needs to be manually adjusted until it is between 6.500 and 7.500.

With the gauge displaying the sensor value that needs adjusted, remove the sheet metal cover of the corresponding strain sensor.

Find the mounting block with TWO set screws and loosen one set screw. GENTLY push the end of the sensor bar with an appropriate tool
Pushing inward will lower the number and pushing outward will raise the number.
NOTE: It takes a very small amount of force to adjust the sensor

While holding the sensor bar in place, tighten both set screws and re-check the display. It may take a moment for the scale to settle on a number. Repeat process until range is within 6.500 and 7.500.

REPEAT FOR ADDITIONAL SENSORS
For applications with multiple sensors, hit the UP ARROW and adjust values until all sensors are within the range of 6.500 to 7.500.
For sensors that are out of range, repeat step 3.

EXIT DIAGNOSTICS MENU
To exit the diagnostics menu, turn the scale off by pressing the ON/OFF button.

CALIBRATION & UNITS

CHANGING UNITS
With the gauge on, press and hold the UP ARROW and then press the MENU button.
This will toggle the settings between pounds and kilograms.

CALIBRATION
The 201 series load scale must be calibrated both empty and loaded to work properly. The scale associates the weight you enter with the air pressure in the suspension system  at the time of calibration. You will need to calibrate once while the vehicle is empty, and again while the vehicle is loaded for each axle group being monitored.
**** Only enter on-the-ground weight of axle or group being monitored. DO NOT use gross weight, tare weight, etc.

EMPTY CALIBRATION POINT
1: While the vehicle is empty, obtain axle group weights from a certified in- ground scale.
2: Park on a level surface. Shift the transmission to neutral and set the parking brakes. Chock the wheels to prevent unexpected vehicle movement, then release the parking and service brakes.
3: Make sure the Height Control Valve (HCV) has fully inflated the air bags. If needed, briefly dump the air from the suspension and allow the HCV to refill the system.

| 4: Press the ON/OFF button to turn on the Right Weigh load scale.
---|---
| 5: Press the blue MENU button to select the proper axle group or calibration set.
| 6: Press and hold the C LOW button until the “C/L” symbol appears.
| 7: Adjust the value using the UP and DOWN arrows so that it matches your scale ticket for the axle group.
| 8: To save, press and hold the C LOW button until the “C/L” symbol disappears.

9: Repeat steps 5-8 for all axle groups or calibration sets.
LOADED CALIBRATION POINT
Repeat “empty calibration point” steps 1-3 with the vehicle fully loaded.

| 4: Press the ON/OFF button to turn on the Right Weigh load scale.
---|---
| 5: Press the blue MENU button to select the proper axle group or calibration set.
| 6: Press and hold the C HIGH button until the “C/H” symbol appears.
| 7: Adjust the value using the UP and DOWN arrows so that it matches your scale ticket for the axle group.
| 8: To save, press and hold the C HIGH button until the “C/H” symbol disappears.

9: Repeat steps 5-8 for all axle groups or calibration sets.
RE-CALIBRATION
It is recommended to re-calibrate every 6 months for each axle group being measured.
It is optional to set a security PIN code on the scale. Once a PIN code is set, the feature is enabled and the 5 digit number will be required to gain access to the calibration and operating mode settings.
Once the PIN code feature is enabled, it can be changed but the feature cannot be disabled without resetting the calibration values. If you would like to disable the PIN code feature, please call Right Weigh Technical Support listed on page 2.

SET PIN CODE

With the gauge off, press and hold both the C LOW and C HIGH buttons, then press the ON/OFF button. Release all three buttons. The gauge will display “CodE”.
Press the MENU button and “00000” will display on the screen. Enter a 5 digit PIN code using the 1, 2, 3, and 4 buttons. Press the MENU button again to save the code.
**If the display shows “—–”, then there is already a code set.

CHANGE PIN CODE

With the gauge off, press and hold both the C LOW and C HIGH buttons, then press the ON/OFF button. Release all three buttons. The gauge will display “CodE”.

Press the MENU button and “—–” will display on the screen. Enter the previous PIN code. If the code entered is correct, the display will show “Good”.

Press the MENU button and enter the new 5-digit PIN code using the 1, 2, 3, and 4 buttons. Press the MENU button again to save the code.

OPERATE & WEIGH

Follow these steps while weighing your vehicle:

1. Park on a level surface. Shift the transmission to neutral and set the parking brakes.
2. Chock the wheels to prevent unexpected vehicle movement, then release the parking and service brakes.
3. Make sure the Height Control Valve (HCV) has fully inflated the air bags. If needed, briefly dump the air from the suspension and allow the HCV to refill the system. (This may take several minutes depending on the type of HCV.)
4. Press the ON/OFF button to turn on the Right Weigh load scale.
5. Adjust the suspension or the load itself until the Right Weigh load scale displays a weight value below your legal limit.
6. Press the blue MENU button to display other axle groups or calibration sets.
7. Press the ON/OFF button to turn off the Right Weigh load scale.

will cause the vehicle weight distribution to shift between the axle groups. Additionally, if one or more of the vehicle’s wheels are in a pothole, that could result in additional pressure or torque on the suspension air bags. This will cause the suspension to have a different air pressure than what is normally needed to hold up the given weight
The vehicle’s brakes are on| Release the parking brakes when weighing and/or calibrating. When the vehicle brakes are set, they could apply additional pressure or torque on the suspension air bags. This will cause the suspension to have a different air pressure than what is normally needed to hold up the given weight
There is a significant air leak in the suspension system| Check air lines for leaks. Having a leak could cause the HCV to refill the suspension at regular intervals to maintain the vehicle’s ride height If there is a significant leak, the gauge displaywill slowly decrease in value and then quickly increase in value when the HCV refills the suspension system.
The Height Control Valve (HCV) is malfunctioning or broken| If the HCV is not functioning correctly, the air pressure applied to the suspension system could be inconsistent and/or erratic. To test for an HCV problem, acquire a weight reading from the Right Weigh gauge and write it down (refer to gauge operating instructions for proper procedure). Drive the vehicle around the block and return to the same location. Acquire a second reading from the Right Weigh gauge. If the two readings are significantly different, then the HCV might be malfunctioning.
Gauge reading “noAir”| One or more air inputs are not receiving air Of 2 air sensors are set to Average mode and one isn’t
receiving air, gauge will read noAir message)| Check that all air inputs are receiving air. Pull airline out of air fitting(s) on the back of the gauge. Follow the airline along the vehicle to the airbags to check that it hasn’t been pinched or damaged. Dump suspension and refill to ensure air bags are full.
Lift Axle being measured is in the up position| If an air input is measuring a lift axle on the vehicle and the lift axle is in the up position, the air bags will be deflated of air and the gauge will read the noAir message.
App Won’t Connect to the Gauge| Scale is connected to a
constant power source| Connect the scale to a switched power source between 9 and 32 VDC (typically either the vehicle marker lights or the AUX/ABS wire). If the gauge is powered too long it can stop transmitting a Bluetooth signal and may need to be disconnected and reconnected to work again.
Scale is connected to another device| Disconnect the scale from the other device before connecting through your device.
Phone requires re-set| To reset your phone – close the app, turn off Bluetooth, and wait 10 seconds. Then open the app and turn the Bluetooth back on. Try rescanning for the scale. If this still doesn’t work, in some cases it is necessary to restart the phone completely.
Gauge Will Not Calibrate Low/High| Air pressure in the system is not changing| To enter low or high cal mode, the gauge must see a measurable change in air pressure. Make sure you calibrate high when the vehicle is near the legal limit and calibrate low when the truck is empty. Also, be sure the air line is connected directly to an air bag – NOT the main air supply or brake system.
Scale Does Not Power On| Scale is not connected to a switched power source of between 9 and 32 VDC| Connect the scale to a switched power source between 9 and 32 VDC (typically either the vehicle marker lights or the AUX/ABS wire). If there is a bad connection in the circuit which causes voltage to drop below 9 volts, the scale will not power on. Test the power source with a voltmeter.
---|---|---
Scale is connected directly to the battery| Connect the scale to a switched power source between 9 and 32 VDC (typically either the vehicle marker lights or the AUX/ABS wire). The scale is active anytime it is connected to power, even if the display is off. To reset it, disconnect and reconnect to the power source, wait 10 seconds. then try again to turn the display on.
Polarity is incorrect| Correct the polarity. The red wire must be connected to positive and the black to negative.
Cannot Change Calibration Data| The scale has an active user-defined security PIN code| If the scale is protected with a PIN code, the PIN must be entered before calibration data can be changed. To understand how to reset the PIN code, see page 16. If the PIN code has been forgotten, please call Right Weigh technical support listed on page 2 for further assistance.

APPENDIX A

The following is a list of additional parts needed for air line installation. This list is just a suggestion and may not be all of the parts needed for your specific vehicle. Check with your Right Weigh dealer for optional installation kits.

1/4 Inch Air Line
Approximately 20 to 30 feet (6 to 9 meters)

20 or more Zip Ties

Male Straight Fitting
Air line fitting for 1/4” air line, with a thread size to match the street tee fitting.

Street Tee Fitting
The thread size should match the air bag fitting. (1/4” NPT or 3/8” NPT)

It is very important that all wiring connections be made watertight.
Connections which are not watertight can allow moisture to travel through the individual strands of the wires and make it’s way into the scale, causing permanent damage to the electronics.

Heat shrinkable splices are included in the 201-SK Installation Kit.

Crimp each end of the wire into the connector with a wire crimp tool (tool not provided). With a heat gun or heat torch, heat the connector until it shrinks completely around each wire end. Make sure you do not burn the wire jacket.After all connections have been made, heat shrink the entire group of splices so that it seals on the outer jacket of both cables.

WARRANTY & RETURN POLICY

Warranty Statement
Right Weigh is committed to providing quality products that function as intended, and we always stand behind our workmanship. Our industry leading warranty is our best  effort to express this commitment. Products manufactured or sold by Right Weigh, Inc. are warrantied to be free from significant defects in material and workmanship 3 years  from date of purchase. During this time, and within the boundaries set forth in this warranty statement, Right Weigh, Inc. will, at its sole discretion, correct the product  problem or replace the product.
This warranty shall not apply to product problems resulting from: (1) Improper application, installation, incorrect wiring, or operation outside of the approved specifications  of the product. (2) Accidents, faulty suspension parts or power surges (3) Inadequate maintenance or preparation by the buyer or user (4) Abuse, misuse, or unauthorized  modification. (5) Acts of God, lightning strike, floods, fire, earthquake, etc.
Right Weigh, Inc. assumes no responsibility or liability for any loss or damages resulting from use of Right Weigh, Inc. products. In no event shall Right Weigh, Inc. be liable  for direct, indirect, special, incidental or consequential damages (including loss of profits or loss of time) resulting from the performance of a Right Weigh, Inc. product. In all  cases, Right Weigh, Inc. liability will be limited to the original cost of the product in question. Right Weigh, Inc. reserves the right to make improvements in design, construction, and appearance of products without notice.

Return Policy and Authorization
Before returning any product, please obtain a Return Merchandise Authorization number (RMA#) by calling Customer Service at +61 418 622840 or e-mailing leigh@rwls.com.au. Include the RMA# and information regarding the reason for the return with the returned product. Shipping costs for returns must be prepaid by the  customer. For your protection, items must be carefully packed to prevent damage in shipment and insured against possible damage or loss. Right Weigh, Inc. will not be responsible for damage resulting from careless or insufficient packing or loss in transit.
An RMA# must be obtained by the original purchaser before any product can be returned. Only new, unused products may be returned. Installed, used, damaged, modified  or customized products can not be returned for credit. Credit will be issued to the original purchaser after evaluation by Right Weigh, Inc.

Repairs/Replacements
An RMA# must be obtained before any product can be returned. Right Weigh, Inc. will evaluate returned products at no charge. If Right Weigh, Inc. determines that the  returned product is under warranty it will repair the product or parts thereof at no charge, or if unrepairable, replace it with the same or functionally equivalent product  whenever possible. Right Weigh, Inc. will return the product at its expense via a shipping method (carrier to be at sole discretion of Right Weigh, Inc.) equal to or faster than  the method used by the customer. Products or parts thereof not covered by warranty will be repaired or replaced at customer expense upon authorization by the customer. Right Weigh, Inc. will return the repaired product at customer expense via a shipping method (carrier to be at sole discretion of Right Weigh, Inc.) equal to or faster than the method used by the customer.

THANK YOU
FOR YOUR BUSINESS

Thank you for choosing to drive more and scale less! Here at Right Weigh, we are committed to making our products simple to install and easy to use. We understand that installation can vary between vehicles and yours may not be described in this manual. In any event, our technical support team is ready to answer your questions!

SCAN FOR ADDITIONAL RESOURCEShttps://uqr.to/y82w
CONTACT US FOR
ADDITIONAL SUPPORT
503-628-0838 888-818-2058 – Toll Free (USA ONLY)
****support@rwls.com
www.rwls.com/how-to-calibrate- install/

FOLLOW US!
RightWeighInc
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Right Weigh, Inc.
Hillsboro, Oregon USA
PP-003-0028 Revision G
Februaru 2022
©2015-2022 Right Weigh, Inc. All rights reserved.

Documents / Resources

| RW Onboard Load Scale Exterior Digital Air Spring Suspension [pdf] Instruction Manual
Onboard Load Scale Exterior Digital Air Spring Suspension, Onboard Load Scale, Exterior Digital Air Spring Suspension, Exterior Digital Air Suspension, Air Spring Suspension, Air Suspension, Spring Suspension
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References

• Manuals & Resources - Right Weigh
• Right Weigh | Onboard Load Scales
• rwls.com/warranty

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