Gasboy Atlas Start-up - Manual (Page 130)

Page 6-10 MDE-4334D Atlas™ Start-up and Service Manual · July 2013
Hydraulic/Mechanical Components Purging Air from System
Purging Product Lines (New Installations)
To purge the product lines, proceed as follows:
Amount to Purge at Nozzle
Use the following table to determine the amount of fuel that is to be dispensed when purging
the unit through the nozzle. Use an appropriately-sized Prover Can:
For Pump This Amount
Start-ups (installing new systems) 35* gallons (132.5 liters) per hose
*Applies to the amount purged through the dispenser hydraulics after
purging the underground plumbing of air.
Figure 6-4: Typical Shear Valve and Test Port
Test Port
To purge all air from lines and pumps/dispensers for new installations, proceed as follows

(see Figure 6-4 ):
1 Shut off all power to the STP involved.
2 Start with the unit farthest from the tank and then move to units that are closer to the tank.
3 Use a UL-approved sealant and connect a fuel-resistant hose and petcock valve to the shear
valve test port for dispensers. Leave the valve closed.
4 Place the end of the hose into an approved container.
5 Restore power to the STP. Activate the STP for the line being purged.
6 Open the mechanical valve and purge the product lines slowly, until a steady stream of fuel is
observed.
7 After purging, shut off power to the STPs and remove the line and petcock valve from the
shear valve.