Gasboy 9120Q Series - Manual (Page 22)

GASBOY Series 9120Q
16 9120Q Compact Commercial Pumps
•
March 2004
Belts
Since belts do stretch slightly during the first few minutes of operation, check the belt tension after
completing the operational test; a properly tightened belt will permit twisting the belt 180 degrees
midway between the motor and pump pulleys.
On the 9122Q and 9123Q, the belt can be tightened by loosening the cap screw which holds the
idler arm and sliding the arm to obtain the correct belt tension of 6 3/4 lbs. (+ 3/4). When the
adjustment is complete, remember to retighten the cap screw.
Calibration
All GASBOY pumps 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
check the pump for accuracy and make any needed adjustments. Where 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.
Each meter is equipped with a mechanism for calibration, located on the side of the meter. To
adjust the volume dispensed:
1. Check meter registration by delivering product to a reliable, accurate, 50 or 100 gallon prover.
2. Remove the seal wire from the locking pin.
3. Remove locking pin and turn wheel to adjust measurement. Turn clockwise to decrease the
amount in the prover to match the display, turn counter-clockwise to increase the amount in
the prover to match the displayed. Moving the wheel one hole position changes the
calibration by 2/3 cubic inch per 5 gallons. To change by half of this amount, you may utilize
the alternate locking pin hole on the opposing side of the calibration wheel.
4. Repeat process until volume in prover and amount recorded are within tolerance.
5. After calibration is complete, reinstall locking pin and secure in place using a seal wire.