4” Standard Pump Installation, Operation & Service Manual
Adjusting the Functional Element
10
NOTICE:
If a siphon system is being utilized, it is especially important to follow the 5 psi (34 kPa) rule, that is
the pump must create 5 psi more pressure than the relief pressure setting. For example, if a relief pressure of
25 psi (170 kPa) is desired, the pump in use must be capable of producing 30 psi (210 kPa).
4.
Turn on the pump and purge the system of air by pumping at least 15 gallons (57 liters) through each
dispenser. Begin with the dispenser furthest from the pump and work toward the pump.
5.
Pump start up is now complete.
Table 1.- Approximate Pressures At Shut-Off
Pump
Approximate Shut Off Pressure
AGUMP33R1, UMP33R1
25 psi (172 kPa) .74 SG@ 60°F (15°C
AGUMP75S1, UMP75S1
28 psi (193 kPa) .74 SG @ 60°F (15°C)
AGUMP150S1, UMP150S1
30 psi (207 kPa) .74 SG @ 60°F (15°C)
X3AGUMP150S1, X3UMP150S1
43 psi (297 kPa) .74 SG @ 60°F (15°C)
AGUMP75S3-3, UMP75S3-3
30 psi (207 kPa) .74 SG @ 60°F (15°C)
AGUMP150S3-3, UMP150S3-3
32 psi (220 kPa) .74 SG @ 60°F (15°C)
X4AGUMP150S3, X4UMP150S3
40 psi (275 kPa) .74 SG @ 60°F (15°C)
AGUMP75S17-3, UMP75S17-3
29 psi (200 kPa) .74 SG @ 60°F (15°C)
AGUMP150S17-3, UMP150S17-3
32 psi (220 kPa) .74 SG @ 60°F (15°C)
X4AGUMP150S17, X4UMP150S17
39 psi (267 kPa) .74 SG @ 60°F (15°C)