INSTALLATION/OPERATION/PARTS
INSTALLATION
The 4860 meter can be installed either vertically or horizontally in a piping system. The inlet and
outlet are 90
o
apart and can be rotated in relation to the register by 90
o
increments. Install a
strainer in the meter inlet to prevent jamming from foreign material. A 40 mesh or finer basket is
required.
OPERATING CHARACTERISTICS
The 4860 meter uses a nutating disc type measuring chamber and can be calibrated using an
adjusting screw. The pushbutton register records in gallons or liters up to 999 9/10. The totalizer
is a 7-wheel counter which records up to 999,999.9 gallons or liters. Pushing in the reset button
resets the four-wheel register to zero. Change gears permit the meter to be US gallons or liter
measure. The 4860 meter will accurately measure liquids with viscosities of less than 120 SSU
(60
o
F) (16
o
C) at flow rates from 4 to 15 GPM or 15 to 57 LPM. Although designed specifically for
petroleum products, the 4860 meter can be used in applications where the materials are
compatible with recommendations of the manufacturer of the chemical or substance under
consideration.
CALIBRATION
NOTES:
This meter was redesigned causing the calibration procedure to be different depending
on the age of your meter. Meters made after May 10,1995 are referred to as new style
meters; meters made before that date are referred to as old style.
This meter is for consumer use only and not for re-sale. It is not sealable by Weights
and Measures.
All GASBOY meters are adjusted for accurate measure for diesel .05 gallons at the
factory.
However, since the conditions of the installation can affect pump accuracy, it is the
responsibility of the installer to check the pump for accuracy and make any needed adjustments.
Choose the flow rate at which the meter will be used most often for the zero calibration point. For
example, if the pump is being used with an automatic nozzle, calibrate with the nozzle set on the
middle or top notch position, whichever is used most frequently.
Use a certified five-gallon measure with a sight glass and scale showing cubic inches over or
under an exact five gallons. Fill and drain the test measure to completely wet the interior surfaces.
Reset the register to zero and deliver an exact measured five gallons into the test measure at the
selected flow. Read the level of the liquid in the sight glass on the scale in + cubic inches.
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