Veeder-Root Red Jacket Quick-Set Installation, Operation And Service page 34

4" Standard Pump Installation, Operation & Service Manual
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).
AGUMP33R1, UMP33R1
AGUMP75S1, UMP75S1
AGUMP150S1, UMP150S1
X3AGUMP150S1, X3UMP150S1
AGUMP75S3-3, UMP75S3-3
AGUMP150S3-3, UMP150S3-3
X4AGUMP150S3, X4UMP150S3
AGUMP75S17-3, UMP75S17-3
AGUMP150S17-3, UMP150S17-3
X4AGUMP150S17, X4UMP150S17
Initial Start-Up Of Pump
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.
Pump start-up is now complete.
NOTE: For Three-Phase Pumps Only!
Where it is not convenient to predetermine the power supply phase rotation, the proper rotation can be
determined by pump performance. The pump head pressure and capacity will be considerably less than rated
when rotating backwards.
Connect the pump leads to terminals T1, T2, and T3 of the magnetic starter observing the color code shown in
Figure 25 A, B, and C. With ample product in the tank and the system purged of air, start the pump and make a
pressure gauge reading of the system pressure with the ball valve closed; or, open valve and calculate the
pumping rate.
Next, reverse power leads at L1 and L2. Repeat either the pressure or capacity test, as described above. If the
results are higher than the first test, the rotation of the second test is correct. If the second test gives lower
performance than the first, reconnect the power leads to L1 and L2 (as under test 1) for the correct rotation.
Where the power supply has been properly marked L1, L2, and L3 in accordance with the accepted phase
rotation standards, it is possible to predetermine the proper rotation of these units. The pump power leads are
color coded orange, black, and red, and if connected through the magnetic starter to L1, L2, and L3 respectively,
the UMP will rotate in the correct direction. It is recommended, however, that the performance tests always be
made whether or not the power supply has been properly 'phased out' .
Table 7. Approximate Pressures at shut-off
Pump
25 psi (172 kPa) .74 SG@ 60°F (15°C
28 psi (193 kPa) .74 SG @ 60°F (15°C)
30 psi (207 kPa) .74 SG @ 60°F (15°C)
43 psi (297 kPa) .74 SG @ 60°F (15°C)
30 psi (207 kPa) .74 SG @ 60°F (15°C)
32 psi (220 kPa) .74 SG @ 60°F (15°C)
40 psi (275 kPa) .74 SG @ 60°F (15°C)
29 psi (200 kPa) .74 SG @ 60°F (15°C)
32 psi (220 kPa) .74 SG @ 60°F (15°C)
39 psi (267 kPa) .74 SG @ 60°F (15°C)
29
Approximate Shut Off Pressure
Initial Start-Up Of Pump