If you finish a job and notice the physical level in your tote doesn't match what the Mixmate recorded, it usually indicates that the gear meter is "miscounting." This is typically caused by air in the lines or a mechanical issue within the meter itself.
The most frequent cause of measurement errors is an air leak on the suction side of your plumbing.
The "Invisible" Leak: Because the system is under vacuum while running, an air leak will pull air into the pipes rather than leaking chemicals out onto the ground.
The Result: The gear meter is designed to measure liquid, but it will spin much faster when air bubbles pass through it. This causes the tablet to "think" you have used more chemical than you actually have.
Action: Inspect all joints, clamps, and seals between the tote and the meter. Even a small pinhole or a slightly loose cam-lock can introduce enough air to throw off the accuracy.
If you have recently disassembled your gear meter for cleaning or inspection, the gears may have been reinstalled incorrectly.
The Rule: When placing the gears back into the meter, the magnets must be visible to the person looking at them.
The Result: If the gears are flipped so that the magnets are facing the back of the housing, the sensor will not be able to "see" them properly. This causes the meter to read fewer pulses than it should.
The Danger: Because the system thinks it isn't hitting the target yet, it will keep pumping. This results in doubling the amount of product dispensed into your mix.
Action: Open the meter housing and verify that the magnets are facing out toward you.
Small "chunks" or crystallized chemicals can partially jam a gear or cause it to skip.
Action: Check the filter screen before the meter to ensure no debris has bypassed the screen and entered the meter housing.