MDE-4334C Atlas Start-up and Service Manual · April 2008
Page 7-11
Purging Air from the System
Hydraulic/Mechanical Components
Purging Air from the System
• Wear eye protection. Residual pressure and entrapped fuel may still be present
and may drain or spray while removing parts.
• Fire and explosion could result in severe injury or death.
• Test and close the involved shear valves. Shut off power to the unit.
• Remove parts slowly. Collect fuel in approved containers.
• Clean up all spills promptly.
WARNING
About the Purging System
Purge air from the hydraulic system properly. Failure to properly purge air from the system
can damage components and result in inaccurate calibration and fuel delivery. Purge air from
the system for new installations or when fluid containing parts of the hydraulic system are
serviced.
Purging Product Lines (New Installations)
Amount to Purge at Nozzle
Use the table below 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
Figure 7-4: Typical Shear Valve and Test Port
Test Port