Gen 1.3 - Troubleshooting

Gen 1.3: Troubleshooting ERR3

Homer Jon Young — Thu, 01 Jan 1970 00:00:00 +0000

This post will detail the definition of an ERR3, as well as the common and potential causes of the solution. It will also delve into simple troubleshooting methods that can be used to diagnose and treat the issue.

What is ERR3?

ERR3 is displayed when the actual MIST volume is significantly greater than the target volume.

Most Common Cause:

Leak in the nozzle circuit.

Other Potential Causes:

There are more nozzles installed in the nozzle circuit than entered as the NOZ count in the SET-UP menu.
The actual flow rate (AFR) is much greater than the estimated nozzle flow rate (NFR) in the DATA Menu.
The tolerance in the error calculation (TOL) is too small.
Flow meter is not working properly.

Troubleshooting Steps:

1. Before running any tests, note the AFR in the DATA menu.

This will be used to determine if a slow-line leak is present within the system.
To access the AFR, press the red menu button to access the side menu.
Use the up/down buttons to navigate to the DATA menu, and use the green button to access it.
Use the up/down buttons to find “AFR” and note this value for later.

2. Attempt to reproduce ERR3.

Clear error – press Red MENU/Stop button for 5 seconds.
Run Manual Mist – press the Up and Down arrow simultaneously and hold for 2 secs.
If ERR3 results, proceed with next steps. Otherwise, run more Manual Mists to ensure system is working properly. If the error seems to have resolved itself, see Step 5 (Determining a slow, “line-fill” leak).

3. Confirm System Setup is correct.

Confirm nozzle count in controller (NOZ in Setup Menu) reflects number of nozzles installed.
Confirm nozzle flow rate (NFR in DATA Menu) is reasonable (35 – 50 ml/min)
Confirm tolerance (TOL in DATA Menu) is correct:

Nozzle Count	Tolerance
Less than 30	75%
30 to 50	50%
Greater than 50	25%

If Setup changes are required, run Manual Mists to confirm system is working properly.

4. Visually inspect nozzle circuit for Leaks.

Run an extended inspection cycle (MTCE Menu, press and hold INS) and look for leaks
If you have a circuit that is primarily elevated, see Troubleshooting Error 3: Elevated Nozzle Circuits.

5. Determining a Slow, “Line-Fill” Leak:

If your AFR has stabilized after multiple manual mists and the system is no longer producing an ERR3, you are likely dealing with a Slow, “Line-Fill” leak.
- This can be seen by comparing your beginning AFR from step 1 with an AFR taken multiple manual mist cycles later
During the hours between mist cycles, fluid can leak out of a fitting or drip out of nozzles and drain the nozzle circuit. The next time the unit mists, the nozzle circuit must first be refilled completely and this may be a large enough additional volume to cause an ERR3. Small leaks are notoriously difficult to troubleshoot because they are difficult to reproduce while onsite.
For more detailed instructions regarding “line-fill” leaks, see Troubleshooting Error 3: Line-Fill Leaks.

Additional Resources for Troubleshooting ERR3:

Leak Diagnosis and Troubleshooting (w/ Leak Detection)

Leak Diagnosis and Troubleshooting (No Leak Detection)

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Leak Diagnosis and Troubleshooting (No Leak Detection)

Jim Jackson — Tue, 25 Jan 2022 23:38:03 +0000

Symptoms:

Visible Leak
Portion(s) of nozzle circuit not misting adequately
Drum’s actual fluid level runs empty before the controller’s volume gauge

Troubleshooting Tests:

1. Visually Inspect Nozzle Circuit To Find Leak

Run an inspection mist cycle by going to the controller’s “Maintenance” menu, looking for “INS“, and holding down the “green” button. Take note of/record the pressure that is being read by the pressure gauge on the misting unit.
Walk around and inspect nozzle circuit while unit is misting.
Look for difference in mist intensity between adjacent nozzles or sections of nozzles that are misting poorly/not misting at all.
Check for and fix any leaks in tubing or fittings around these areas.
Run another inspection mist cycle.
Compare the pressure at the misting unit and the mist intensity of the nozzles to the previous mist.
Repeat Test 1 as necessary until pressure and mist intensity of nozzles meets expectation.

2. Segment Nozzle Circuit Branches To Find Leak

Run an inspection mist cycle and take note of/record the pressure that is being read by the pressure gauge on the misting unit.
Stop the inspection mist cycle and choose the branch or section of the nozzle circuit that is not misting well to temporarily remove for testing purposes.
Block off the chosen branch of the nozzle circuit using a metal plug.
Run another inspection mist cycle and observe if pressure rises at the misting unit:
- If pressure goes up to expected levels (230 psi – 250 psi), then your leak can be found at the branch that was blocked off for testing.
- If pressure does not change, then the leak is in another area of the nozzle circuit and Test 3 will have to be repeated with a different branch.
- If pressure only marginally goes up, the nozzle circuit may have leaks in multiple branches. Re-add the currently removed branch to the nozzle circuit, run an inspection cycle, and look closely for any potential leaks to fix.
Repeat Test 2 as necessary until pressure and mist intensity of nozzles meets expectation.

3. Replace Buried Tubing With New Tubing Above Ground

This test is ideal for nozzle circuits that have a small amount of tubing that runs underground.
Run an inspection mist cycle and take note of/record the pressure that is being read by the pressure gauge on the misting unit.
Choose a section of tubing that is underground and disconnect it from the rest of the nozzle circuit at each end.
Connect a new line of tubing in its place above the ground.
Run another inspection mist cycle.
Compare the pressure at the misting unit and the mist intensity of the nozzles to the previous mist.
- If pressure or nozzle performance improves, that section of buried tubing has a leak.
- If there is no improvement in either metric, then other sections of buried tubing must be tested.
Fix any leaks or replace the chosen buried line with new tubing.
Repeat Test 3 as necessary at other sections of the nozzle circuit that are buried until pressure and mist intensity of nozzles meets expectation.

The post Leak Diagnosis and Troubleshooting (No Leak Detection) appeared first on TechSelfHelp.

Leak Diagnosis and Troubleshooting (w/Leak Detection)

Jim Jackson — Tue, 25 Jan 2022 21:01:14 +0000

Symptoms:

Error 3 on controller/High AFR in Data menu
Visible Leak
Portion(s) of nozzle circuit not misting adequately
Insecticide’s fluid level runs empty faster than expected

Record Info and Run Troubleshooting Tests:

1. Before running ANY mist cycle, record the AFR that caused the Error 3

The AFR value can be found by going to the “DATA” menu and looking for “AFR”.
- AFR stands for the Average Flow Rate (per nozzle) during a mist.
Run a short inspection mist cycle until all nozzles are misting, then stop the inspection by hitting the red “MENU” button.
Run a manual mist cycle by holding down the “UP” and “DOWN” arrows simultaneously while in the main menu.
After completion of the manual mist, check and compare the new AFR to the original AFR that caused the error 3.
- If the AFR remains the same/caused another error 3, proceed to Test 2.
- If the misting unit no longer displays error 3 after a mist AND the AFR goes down by at least “10”, then proceed to our article on (Line-Fill Leaks Article Link).

2. Visually Inspecting Nozzle Circuit To Find Leak

Run an inspection mist cycle.
Walk around and inspect nozzle circuit while unit is misting.
Look for difference in mist intensity between adjacent nozzles or sections of nozzles that are misting poorly/not misting at all.
- You can also use an in-line pressure tester (Part #28000) to check for noticeable drops in pressure between adjacent nozzles/branches to help determine the location of a leak.
Check for and fix any leaks in tubing or fittings around these areas.
Run a manual mist cycle.
- Observe mist intensity of nozzles now that a leak has been fixed.
- If error 3 returns once the manual mist cycle is complete, that would indicate that the nozzle circuit contains at least one more leak.
Double check the AFR in the DATA menu after the manual mist and compare to the AFR from Test 1.
- The AFR should at least have gone down after fixing the first leak.
Repeat Test 2 as necessary until error 3 no longer appears after a manual mist and the mist intensity of the nozzles meets expectation.
If there are no obvious visual differences in performance between nozzles, proceed to Test 3.

3. Segmenting Nozzle Circuit Branches To Find Leak

Choose a branch or section of the nozzle circuit to temporarily remove for testing purposes.
Block off the chosen branch of the nozzle circuit using a plug.
- Make sure to adjust the controllers original nozzle count by the number of nozzles on the plugged test branch to match the number of actively misting nozzles, otherwise this test will be inaccurate.
Run a manual mist cycle.
- If error 3 returns once the manual mist cycle is complete, that would indicate that the nozzle circuit likely contains a leak in another branch.
Double check the AFR in the DATA menu after the manual mist and compare to the AFR from Test 1.
- If the AFR has gone down, then there is a leak in the current branch that was removed for testing.
- If the AFR saw minimal (less than 5) or no change, then there is no leak in the current branch that was removed for testing.
Re-add the “test” branch to the nozzle circuit, run an inspection mist, and fix any leaks found.
- Adjust the controller’s nozzle count back to normal once the test branch is re-added.
Repeat Test 3 as necessary by choosing other branches until error 3 no longer appears after a manual mist.

4. Replace Buried Tubing With New Tubing Above Ground

This test is ideal for nozzle circuits that have only a small amount of tubing that runs underground.
Choose a section of tubing that is underground and disconnect from the rest of the nozzle circuit at each end.
Run a new line of tubing in its place above the ground.
Run a manual mist cycle.
- If error 3 returns once the manual mist cycle is complete, that would indicate that a different buried section of the nozzle circuit has a leak.
Double check the AFR in the DATA menu after the manual mist and compare to the AFR from Test 1.
- If the AFR has gone down, then there is a leak in the current buried branch that was removed for testing.
- If the AFR saw minimal (less than 5) or no change, then there is no leak in the current buried branch that was removed for testing.
Fix any leaks or replace the chosen buried line with new tubing.
Repeat Test 4 as necessary at other sections of the nozzle circuit that are buried until error 3 no longer appears after a manual mist.

The post Leak Diagnosis and Troubleshooting (w/Leak Detection) appeared first on TechSelfHelp.

Troubleshooting Error 3: Elevated Nozzle Circuits

Jim Jackson — Tue, 25 Jan 2022 23:32:49 +0000

This can be the root cause of an error 3 if the nozzle circuit is installed at a higher than normal (12 feet or above) height above the misting unit. An excess amount of fluid from the nozzle circuit lines can drain back into the misting unit during the post-mist hold (“HLD”) time. This excess fluid drained from the nozzle circuit lines must then be “re-filled” during the next mist, which cause the error 3. The hold time is necessary to drain some fluid pressure from the lines after the mist to ensure that the nozzles do not drip.

Symptoms:

Error 3 on controller/High AFR in Data menu
No Visible Leak
Fluid level in drum is higher than reflected in the volume gauge on the controller

Record Info and Run Troubleshooting Tests:

1. Before running ANY mist cycle, record the AFR that caused the Error 3

The AFR value can be found by going to the “DATA” menu and looking for “AFR”.
- AFR stands for the Average Flow Rate (per nozzle) during a mist.
Run a short inspection mist cycle until all nozzles are misting, then stop the inspection by hitting the red “MENU” button.
Run a manual mist cycle by holding down the “UP” and “DOWN” arrows simultaneously while in the main menu.
After completion of the manual mist, check and compare the new AFR to the original AFR that caused the error 3.
- If the misting unit no longer displays error 3 after the manual mist mist, proceed to Test 2
- If the AFR remains the same or caused another error 3, please proceed to our article on Leak Diagnosis and Troubleshooting.

2. Reduce Post-Mist HLD (Hold) Time

Find “HLD” in the DATA menu and reduce the duration of the hold time to 10 seconds by setting HLD to 100 (the controller counts this time in tenths of a second).
Run two manual mist cycles and check the AFR after the mist.
- If the first manual mist causes an error 3, disregard it and clear it. The change to the HLD time from above won’t take effect until the second manual mist cycle.
If the AFR went down AND no error 3 was displayed, then that will confirm that the original error 3 was caused due to the original hold time and verticality of the nozzle circuit.
- Note: If error 3 returns after the second mist but the AFR has gone down, continue adjusting the HLD time down and repeating the test. Two manual mists must be run each time the HLD time is adjusted.
- As it is an important setting for avoiding dripping nozzles, adjust the HLD time until the longest duration that does not cause an error 3 is found.

The post Troubleshooting Error 3: Elevated Nozzle Circuits appeared first on TechSelfHelp.

Gen 1.3: Controller displays “MIST” but Nozzles Not Misting

Homer Jon Young — Thu, 01 Jan 1970 00:00:00 +0000

Possible Causes:

Nothing to Pump:

Level of liquid in drum is at or below pump intake/filter

Failure to Pump:

Clogged intake filter – common, but not usually the culprit
Insecure pump intake – common on new systems
Pump failure – common, but not on new systems
Pump priming issues – not common
Controller relay failure – very uncommon
Motor failure – very uncommon
Low voltage at outlet – not common

Pumping but not generating pressure in nozzle circuit

Pump bypass too open – not common
Auto Drain Valve is off or has failed – not common
Agitation Valve not opening during mist cycle – not common
Leak in nozzle circuit – common
Too many nozzles for pump – not common

Pumping and generating pressure, but no mist

Blockage/kink in nozzle circuit – not common
Clogged nozzles – common

See Gen 1.3: Troubleshooting Nozzles Not Misting

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Gen 1.3: Troubleshooting Nozzles Not Misting

Homer Jon Young — Thu, 01 Jan 1970 00:00:00 +0000

This article covers how to diagnose the issue of nozzles not misting on a Gen 1.3 Drum unit, as well as going over the troubleshooting/repair process to determine the failed component and ultimately fix it.

See Gen 1.3: Controller displays “MIST”, but Nozzles Not Misting

Troubleshooting Steps:

1. Check internal contents of drum

Remove drum lid and confirm liquid level in drum is at or above intake filter and that filter is clean
- If liquid level is low, add water
- If filter is clogged, clean and replace
Check that pump intake line is secure
- If pump intake pipe isn’t secure, push it up all the way into the fitting
Make sure the Auto-drain valve is attached
- If the valve is missing, the unit will be unable to produce pressure. Either replace the valve or, for a temporary substitute, install a nozzle on the Auto-drain line using a 1/4″ coupling
  - The latter option is not recommended as a permanent solution
Run INSpect. If nozzles not misting, continue troubleshooting

2. Confirm motor is in working condition

Run INSpect and listen for the motor relay click
- If you don’t hear a click at the beginning of the mist, the cause is probably either: 1) controller relay failure or 2) motor failure
- If you do hear a click, then the motor relay on the controller is in good condition. Continue troubleshooting
Disconnect the pump from the motor by removing the cat clamp. With the pump isolated, grasp the grey, square metallic piece of the pump that interlocked with the motor shaft and attempt to turn it by hand.
- If the pump is difficult to turn by hand or completely seizes up after 1-2 turns, then the issue is the pump and will require a replacement.
- If the pump spins with little to no resistance, then proceed to testing the motor
With the pump still disconnected from the motor, run an INSpect and observe the motor shaft
- If the motor shaft does not spin, or if it spins but the motor reaches extreme levels of heating, then the problem is either the motor or the motor cable and it is recommended to replace both as a precaution
- If the motor shaft spins and the motor does not reach excessive levels of heat, then the motor is not the issue. Continue troubleshooting

3. Confirm pressure gauge is working and pressure is nominal during INSpect

First, check the pressure gauge while the system is idle (not doing anything)
- The pressure gauge should always read 0 psi in this state
- If it reads anything but 0 psi, the pressure gauge has failed and will need to be replaced before proceeding with pressure related problems
Run an INSpect mist
- If the pressure is in the system’s normal operating range of 220 – 250 psi and you have low mist, the cause is either:
  - Fouled nozzles
  - A blockage or kink somewhere in the nozzle circuit
  - A partially open Agitation Valve.
- If pressure is lower than 200 psi, continue troubleshooting

4. Run INSpect, then kink the 1/4″ nozzle circuit tubing just outside of the unit and observe pressure gauge

If the pressure increases to 250 psi or more, the cause of your nozzles not misting is either:
- A leak in the nozzle circuit
- The nozzle circuit has too many nozzles and exceeds the capacity of the pump (about 100 nozzles in total and 1000 feet of tubing)
If the pressure is less than 200 psi with the line kinked, continue troubleshooting

5. Run INSpect, reduce the flow bypassed by the pump with a flathead screwdriver (turning the screw clockwise) and observe pressure gauge

If the pressure increases in response to closing the bypass, the probable cause is that the pump bypass was too open for the size of the nozzle circuit. Do not increase the pressure higher than 250 psi
If the pump bypass is completely closed and the pressure is less than 200 psi, return bypass screw to original position and continue troubleshooting

6. Confirm whether the agitation valve is working

Remove the first nozzle by unscrewing the tip from the nozzle assembly, then run an INSpect
- If fluid shoots out of the open nozzle assembly, then fluid is flowing through the agitation valve as expected. Proceed to step 7
- If no fluid shoots out of the open nozzle assembly, then the Agitation Valve is not opening during the INSpect like it should
If the Agitation Valve is not opening during INSpect, the probable causes are either:
- An unplugged Agitation Valve connector from the back of the controller (Two-pronged white connected with a red-dot sticker on it)
- A mechanical failure of the valve, which necessitates a replacement of the Agitation Valve
- Low voltage from the outlet, which can be checked using a digital voltmeter/multimeter both at rest and at the time of misting (looking for 115 – 120 Volts). If low voltage is confirmed, an electrician will have to be consulted

7. Pump failure and replacement

If all of the tests above have passed without a solution, then the most likely cause of the low mist problem is a failing or failed pump. See Gen 1.3: Replace Pump

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Gen 1.3: Troubleshooting ERR2

Jim Jackson — Fri, 15 May 2020 20:50:49 +0000

This post will detail the definition of an ERR2 (Error 2), as well as the common and potential causes of the solution. It will also delve into simple troubleshooting methods that can be used to diagnose and treat the issue.

What is ERR2?

ERR2 is displayed when the flow meter returns a value of zero after a MIST cycle.

Most Common Cause:

Flow meter clog or failure

Other Potential Causes:

Pump failure or clogged intake filter
Flow rate of the nozzle circuit is too low to register. (Nozzle count may be less than 20)
Frozen fluid in nozzle circuit
Agitation valve not opening
Auto Drain Valve (inside drum) is unattached
Failed motor or controller

Troubleshooting Steps:

1. Confirm the nozzle count is 20 or more.

If not, the flow rate is too low for the flow meter to reliably read. Unplug the flow meter from the back of the controller and cycle the power.

2. Run a remote or manual mist.

If the nozzles are misting, the flow meter is clogged or has failed.

3. Remove and clean the flow meter then retest by running a mist to completion.

If the result is ERR2, replace the flow meter.
If you do not have a replacement flow meter on hand, you can enable the system to run without it by unplugging it from the back of the controller and cycling the power.
If the nozzles are not misting, the problem is not with the flow meter.

See Gen 1.3: Troubleshooting Nozzles not Misting.

The post Gen 1.3: Troubleshooting ERR2 appeared first on TechSelfHelp.

Unit not misting automatically

Homer Jon Young — Thu, 01 Jan 1970 00:00:00 +0000

Potential Causes:

System Mode is set to OFF or REM (or ON) and should be set to AUTO EVERYDAY or AUTO-CUSTOM. See Controller: Setting System Mode
There are no AUTO MIST cycles defined. See Controller: Setting AUTO MIST Cycles
The controller has calculated that the unit is empty and needs to be refilled.
- See Gen 1.3: Controller displays EMP and unit will not mist
- See Gen 3: Controller displays EMP CAR and unit will not mist
Unit has suspended operating for some reason. See Controller displays NOZ00, SKIP, ERR# or SUS and unit will not mist
The unit is plugged into the outlet but the display is blank.
- See Gen 1.3: Blank Controller Display
- See Gen 3: Blank Controller Display

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Gen 1.3: Displayed Tank Level does not match Actual Level

Homer Jon Young — Thu, 01 Jan 1970 00:00:00 +0000

Displayed Level is greater than Actual Level
Possible Causes:

Actual flow rate is greater than the controller Target Flow Rate (NFR entered into the DATA Menu) – which may also point to a leak or siphon in the nozzle circuit.
Actual nozzle count is greater than the controller nozzle count (NOZ in the SET-UP Menu)
The controller tank volume (TNK in the SET-Up Menu) is larger that the volume of the actual tank.
The controller Starting Level (bars entered into LEVEL in MAINTENANCE Menu) was higher than the actual starting level.

Displayed Level is less than Actual Level
Possible Causes:

Actual nozzle count is less than the controller nozzle count (NOZ in the SET-UP Menu)
Actual flow rate is less than the Target Flow Rate (NFR entered into the DATA Menu) – which may suggest clogged nozzles.
If the mist cycles are very short, the effective flow rate may be less than the Target Flow Rate (NFR entered into the DATA Menu)
The controller tank volume (TNK in the SET-Up Menu) is smaller that the volume of the actual tank.
The controller Starting Level (bars entered into LEVEL in MAINTENANCE Menu) was lower than the actual starting level

See Gen 1.3: How Tank Level Display Works for more explanation

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Gen 1.3: How Tank Level Display Works

Homer Jon Young — Thu, 01 Jan 1970 00:00:00 +0000

For Gen 1.3 units without leak detection:

The displayed level of solution remaining in the drum is calculated using factors entered into the controller during the setup process – Tank Size, Starting Level, Nozzle Count, Target Flow Rate
New Level = Old Level – (nozzle count x target flow rate x mist duration)
The unit will stop misting when the displayed level is zero
Because it is a calculated rather than measured value, there may be a difference between the displayed level and the actual level if the factors in the calculation do not reflect the actual configuration of the system . See Gen 1.3: Displayed Tank Level does not match Actual Level
It is possible for the unit to run dry if the actual level is zero, but the displayed level is positive. Running dry does not typically cause pump failure, but will reduce the lifetime of the pump.

For Gen 1.3 units with leak detection:

The displayed level of solution remaining in the drum is also calculated, but the calculation uses the actual flow out of the pump measured with the leak detection flow meter.
New Level = Old Level – measured flow out of the pump during the previous mist
The unit will stop misting when the flow meter detects essentially no flow during a mist cycle.
It is less likely for there to be a difference between the displayed level and the actual level in a unit with leak detection, but it is still possible if Tank Size or Starting Level are incorrect.
It is also possible for there to be a difference between Displayed and Actual Levels if the nozzle circuit is very small or if the mist cycles are very short. See Gen 1.3: Leak Detection and TOLerance

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Gen 1.3 - Troubleshooting

Gen 1.3: Troubleshooting ERR3

This post will detail the definition of an ERR3, as well as the common and potential causes of the solution. It will also delve into simple troubleshooting methods that can be used to diagnose and treat the issue.

What is ERR3?

Most Common Cause:

Other Potential Causes:

Troubleshooting Steps:

1. Before running any tests, note the AFR in the DATA menu.

2. Attempt to reproduce ERR3.

3. Confirm System Setup is correct.

4. Visually inspect nozzle circuit for Leaks.

5. Determining a Slow, “Line-Fill” Leak:

Additional Resources for Troubleshooting ERR3:

Leak Diagnosis and Troubleshooting (No Leak Detection)

Symptoms:

Troubleshooting Tests:

Leak Diagnosis and Troubleshooting (w/Leak Detection)

Symptoms:

Record Info and Run Troubleshooting Tests:

Troubleshooting Error 3: Elevated Nozzle Circuits

Symptoms:

Record Info and Run Troubleshooting Tests:

Gen 1.3: Controller displays “MIST” but Nozzles Not Misting

Gen 1.3: Troubleshooting Nozzles Not Misting

This article covers how to diagnose the issue of nozzles not misting on a Gen 1.3 Drum unit, as well as going over the troubleshooting/repair process to determine the failed component and ultimately fix it.

Troubleshooting Steps:

1. Check internal contents of drum

2. Confirm motor is in working condition

3. Confirm pressure gauge is working and pressure is nominal during INSpect

4. Run INSpect, then kink the 1/4″ nozzle circuit tubing just outside of the unit and observe pressure gauge

5. Run INSpect, reduce the flow bypassed by the pump with a flathead screwdriver (turning the screw clockwise) and observe pressure gauge

6. Confirm whether the agitation valve is working

7. Pump failure and replacement

Gen 1.3: Troubleshooting ERR2

This post will detail the definition of an ERR2 (Error 2), as well as the common and potential causes of the solution. It will also delve into simple troubleshooting methods that can be used to diagnose and treat the issue.

What is ERR2?

Most Common Cause:

Other Potential Causes:

Troubleshooting Steps:

1. Confirm the nozzle count is 20 or more.

2. Run a remote or manual mist.

3. Remove and clean the flow meter then retest by running a mist to completion.

If the nozzles are not misting, the problem is not with the flow meter.

Unit not misting automatically

Gen 1.3: Displayed Tank Level does not match Actual Level

Gen 1.3: How Tank Level Display Works