Gasboy Atlas Start-up - Manual (Page 139)

MDE-4334D Atlas™ Start-up and Service Manual · July 2013 Page 6-19
Measuring Pressure and Vacuum Hydraulic/Mechanical Components
Measuring Vacuum for Pump
• Wear eye protection. Residual pressure and entrapped fuel may still be present and may
drain or spray while removing the parts.

• Fire and explosion could result in severe injury or death.

• Remove the parts slowly. Collect fuel in approved containers.

• Clean up all spills promptly.
WARNING
About Vacuum Readings
Use vacuum readings to determine if the pumping unit has the ability to move the product
from the storage tank to the pump. Inability to pull a vacuum may indicate that air is entering
the system. Use vacuum gauges that read in inches of mercury (scale 0-30 Hg.).
Figure 6-9: Vacuum Gauge
0
20 100
40 80
60
PSI
PRESSURE
Typical Vacuum
Gauge Dial
Face
Measuring Dry Vacuum for Pump
Use this test to determine the priming ability of a self-contained pumping unit (only run the
test if priming problems exist). Always follow all safety warnings and cautions.
Figure 6-10: Vacuum Gauge Port on Global Pumping Unit (GPU)
5
10
30
15
25
20
Gauge
Vacuum Gauge
and Extenuation Pipe