Installation Operational Precautions
30
Operational Precautions
• Pump must be completely submerged in DEF (primed) prior for initial install to avoid a dry start condition.
• Do not allow pump to run dry or damage will occur.
• DEF freezes at approximately 12°F (-11°C).
• Bypass/relief valves (capable of minimum 5 gpm [19 lpm]) are needed for proper pump cooling when no
product is flowing through dispensers. These valves are provided by Veeder-Root as part of the plumbing
system.
• Do not allow DEF to freeze in plumbing, pump or in any fittings or damage may occur.
• Only skilled contractors may install the submersible DEF pump, accessories and controls.
Initial Start Up of Pump
1. If a ball valve is installed down line from the pump, close it.
2. Turn the pump on and let it run for about 2 minutes to verify or set discharge pressure (50 psi maximum).
3. If applicable, open the ball valve down line from the pump.
4. Purge system of air by pumping at least 15 gallons (57 liters) through each dispenser. Begin with the
dispenser furthest from the pump and work back toward the pump.
5. Turn off pump.
6. Pump start-up is now complete.
For Three Phase Pumps Only!
Where it is not convenient to predetermine the power supply phase rotation, proper rotation can be determined by
pump performance. Pump head pressure and capacity will be considerably less than rated when rotating
backwards.
Connect the pump leads to terminal T1, T2, and T3 of the magnetic starter observing color code shown in
Figure 21, Figure 24, Figure 25, Figure 28 and Figure 29. 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 pumping rate.
Next, reverse power leads at L1 and L2. Repeat either pressure or capacity tests, as described above. If 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 correct rotation.
Where the power supply has been properly marked L1, L2, and L3 in accordance with accepted phase rotation
standards, it is possible to predetermine the proper rotation of these units. The pump power leads are color coded
brown, grey and black, 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’.
Maintenance
• No maintenance of system is required. Service only as needed utilizing the included troubleshooting guide.
• UMP contains no internal serviceable parts.
• Check valves and pressure relief have no internal serviceable parts.
• All replacement parts are to be serviced by a qualified contractor.
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