Gasboy Atlas Start-up - Manual (Page 181)

MDE-4334D Atlas™ Start-up and Service Manual · July 2013 Page 6-61
Pumping Unit Hydraulic/Mechanical Components
Sump for 9850K
Sumps do not require a periodic inspection, unless leaks or problems occur. Careful
troubleshooting will help determine whether to replace the entire sump or individual parts.
Service Tips
Read and follow all safety precautions as outlined in “Read This First” on page 6-1 .
Sump overflows can be caused by:
• Defective sumps
• Air in pumping unit inlet lines
• Wrong sump type installed
• Internal sump float stuck
To determine possible causes, refer to “Sump Overflows” .
Above ground tanks must have a pressure regulator valve installed at the base of the pump.
Installation at other locations can cause flow or sump overflow problems. Ask Gasboy for the
valve type and follow the manufacturer’s instructions completely for installation.
Sump Overflows
Use the following table to help troubleshoot sump overflows:
If Sump Is Overflowing Check These Items/Probable Cause
Only in bypass With above ground tank Anti-siphon valve
With tank less than 3-feet of
product Replace pump
Sporadically in bypass • Small air leak (check all connections).
• Missing or defective check valves
• Leaky piping
Only at start-up • Missing or defective check valves
• Leaky piping
Only at full flow or both full flow and bypass • Air leak (check all connections)
• Shared suction lines with missing or defective
check valve
• Leaky piping
If after checking the above probable causes, the sump continues to constantly overflow in full
flow or shortly after being placed in bypass, then replace the sump.