12
Part No. 891817 Rev A
February 2007
3.2.4. Meter Check (Calibration) - For Units Equipped with a Meter/Register
All meters are tested and calibrated for gasoline at the factory before shipping. As part of the
start-up procedure, the meter accuracy should be verified based on the actual product
dispensed, added accessories, installation conditions, or any changes that could have occurred
during rough transit..
Step 1
Dispense product in a certified 5 gallon or 20 liter calibration container to wet the
container and then empty it back into the tank, allowing it to drain for 10 seconds.
Step 2
Dispense product into the container until exactly 5 gallons (20 liters) are shown on
the register display.
Note:
When verifying the accuracy, dispense at a flow rate that will be typical of the
flow rate normally used. Changing the flow rate during or between
verification tests may cause your results to vary.
Step 3
Compare the reading on the container’s sight glass to the register value. If you
desire to get the measurement closer to zero on the test container, follow step 4.
Step 4
The meter is adjusted by turning the calibration screw on the left side of the
register. Turn the screw clockwise to correct a plus cubic inches reading on the test
container sight glass, and turn the screw counterclockwise to correct a minus cubic
inches reading.
Note: Track the direction of the turns and the number of full and fractional turns
made with each adjustment in case additional corrections must be made after
re-verifying the accuracy.
Step 5
Repeat Steps 1-4 until the desired level of accuracy is reached.
3.2.5. Complete
Installation
•
After all tests have been completed successfully, and a proper installation and operation
are verified, the conduit openings should be appropriately sealed.
•
The installer should make sure all documentation and manuals are left with the pump
owner.
Calibration Screw
