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The Atlas Fuel System
Operating Sequence for Series 9800 Only
Page 3-42
MDE-4363G Atlas™ Fuel Systems Owner’s Manual · August 2018
Calibration for 9850 Only
All Gasboy pumps and remote dispensers are adjusted for accurate measure at the factory.
However, since the conditions of the installation can affect pump accuracy, it is the
responsibility of the installer to inspect the pump for accuracy and make the required
adjustments. When required, it is the owner’s responsibility to report this device to the local
Weights and Measures officials for their inspection before the unit is put into service.
Calibration methods are given in gallons. When calibrating liter pumps, the same procedure is
used, but gallons is converted to liters (1 gallon = 3.78 liters, 1 gallon = 0.83267 US Imperial
gallons).
9850K and 9850KX Models
To adjust the calibration for 9850K and 9850KX Models, proceed as follows:
1
Inspect the meter registration by delivering the product to a reliable, accurate, 50, or 100
gallon (or metric equivalent) Prover Can.
2
Convert the amount of error to gallons per 100 (provides a percent figure) or gallons per
thousand (provides one-tenths of a percent figure).
3
Read the setting indicated on the adjuster. The amount of error is added to or subtracted from
this setting. The adjuster is shown in graduated divisions of 1%, 0.1%, 0.02%.
Figure 3-25: Models 9850K and 9850KX
4
Reset the adjuster by loosening the clamp.
To decrease the amount delivered, turn the thimble in on the barrel.
To increase the amount delivered, turn the thimble out (unscrew it). After resetting the
adjuster, tighten the clamp.
Note: Always make the final adjustment by turning the thimble in. If the new setting is a
higher number than the original, turn it back beyond the required figure and come back
to it.