AXEON Fluid-O-Tech Repair Rebuild - Manual (Page 15)

08/09 Ed., Rev. B Page 15of 16
this the pump performs properly without leaking, it has been successfully rebuilt. If the cap
leaks, the cap o-ring and mating surfaces should be checked and replaced if necessary and
re-tested. If the pump leaks from the weep holes, the seal and counterface should be
checked and/or re-placed, then reassembled and tested.
4) The max bypass pressure can also be adjusted at this time if desired. This only applies to
those pumps equipped with an acorn nut on the inlet. It is advisable to turn the screw out until
it is flush with the acorn nut as a starting point. Before undertaking this procedure, make sure
that the equipment you are using is able to withstand at least the maximum pressure you will
be setting the bypass to. To test the max attainable pressure, close off the ball valve all the
way (while closely monitoring the pressure gauge to make sure it doesn’t go above 240psi)
and take a pressure reading. Turn the screw clockwise to increase the max pressure and
counterclockwise to decrease it. Be careful that you do not exceed 240 psi, the max rated
pressure for the pump. Set the max pressure to a point above the maximum operating
pressure, but below the maximum rated pressure for your system. Please note that the
bypass pressure should be set a minimum of 30 psi for 070-400 series and 60 psi for 500-
1000 series above the normal maximum operating pressure of your system. If the differential
is less than this, the bypass will potentially be damaged by overusing itself during normal
operation, and flowrate will suffer. The bypass is also not to be used as a flow or pressure
regulator. That will also wear the bypass rapidly. It is only designed to be used as a safety
valve in case of a system malfunction.