Installation
Initial Start Up of Pump
27
Initial Start Up of Pump
1.
If a ball valve is installed down line from the pump, close it.
2.
Open the air purge screw 2 - 3 turns counterclockwise (see Figure 19).
The air purge screw is retained by a hitch pin to limit travel. Do not attempt to rotate
beyond 3 turns.
3.
Turn the pump on and let it run for about 2 minutes to purge air from the manifold’s hydraulic cavities. While
the pump is still running, turn the air purge screw clockwise until it is completely closed.
4.
If applicable, open the ball valve down line from the pump.
5.
Turn on the pump and 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.
6.
Pump start up is now complete.
NOTE: 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 contactor observing color code shown in Figure 15 A
and B. 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, shut-off power and reverse power leads at T1 and T2. 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 T1 and T2 (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
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’.
Pump Tests
Verifying Relief Pressure
The relief pressure is factory set to 19 to 25
psi (131 - 172 kPa). There are two methods
used to verify the relief pressure setting;
• The pressure reading can be taken from the
control unit of an electronic line leak
detection system if one is in operation.
Observe the pressure that occurs after the
pump turns off - this is the relief pressure.
• Pressure may be observed using a gauge
attached at the impact valve or to the
pump’s line test port (see Figure 23).
Figure 23. Locating Pump Line Test Port
WARNING
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