Completing Installation Purging Air from System and Testing
Page 8-6 MDE-5427E Latitude
™
Installation Manual · July 2022
5 Return the nozzle to the nozzle boot.
6 Empty the approved container into an appropriate product tank.
7 Repeat steps 1 on page 8-5 through 6 for each affected hose and each meter.
Do not substitute the pulser while power is being supplied to the unit. Lethal voltages exist
within the dispenser and damage to the unit could occur if certain critical steps are not
followed. It is recommended that only Gilbarco-certified ASCs, who are trained in the
service and operation of Latitude dispensers, perform this procedure.
WARNING
Latitude units have enhanced security software. You must periodically spin the pulser to
maintain a higher purging flow rate.
Verifying Shear Valve, Nozzle, and Dispenser Shutoff Operation
To verify correct shutoff function of the shear valve, nozzle, and dispenser, perform the
following after purging air for all nozzles:
1 Close the shear valve.
2 Activate the fueling position associated with the shear valve.
3 Open the nozzle. Fuel must not continue to dribble out of the nozzle for more than a few
seconds. If fuel continues to flow for a longer period, check the shear valve or nozzle for
problems.
4 Close the nozzle.
5 Open the shear valve.
6 Activate the fueling position for the same fuel on the opposite side of the unit.
7 For the side to be tested (opposite activated side), remove the nozzle from the boot but do not
activate the boot switch by raising the nozzle boot lever or allowing the auto-on flapper to
activate.
8 Open the nozzle. Fuel must not continue to dribble out of the nozzle for more than a few
seconds. If fuel continues to flow for a longer period, check the nozzle or inform the ASC to
check the dispenser valve or valve O-rings.
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