Viking Pump UDF400: DFO Start-UP Guide User Manual
Page 6
Viking Duplex Fuel Oil Package
Field Start-Up Guide
Bulletin:
Issue:
Page:
UDF400
2-Oct-06
5
CONTROL PANEL
Check the name plate rating of the Control Panel and compare with the incoming line voltage and
the motors ratings.
Adjust overload relay setting to full current rating
Check that motor protector push actuator(s) is (are) in start position.
Check that float switches are adjusted to the desired levels
Check that the controller is properly connected to the pump motors
If motors are rotating in the proper direction (as checked in steps 10 to 16 under Priming section),
and all the above checks out correctly, turn the “Hand-Off-Auto” switches for both P1 and P2 to
the “Auto” position.
Activate float switches manually and test if the pumps start and stop at desired levels.
Once the level falls below the start lead pump level float switch FL2 (as shown in diagram under
Float Controls), the pump motor is energized and the lead pump starts pumping fuel into the tank.
If the lead pump has failed and the level falls below FL2 start lead pump level float switch, the
“Lead Pump Failure” red pilot light is turned on and the lag pump motor is energized so that the
lag pump keeps pumping fuel into the fuel tank.
In order to turn off the “Lead Pump Failure” red pilot light, the manual “Reset” red pushbutton
must be pressed.
Once the level reaches the stop all pumps level float switch FL3, the pump motors are de-
energized and the pumps stop.
If the alternation selector switch “P1-Auto-P2” is in the “Auto” position, the stop all pumps float
switch FL3 triggers the alternator and reverses the order of the lead and lag pumps. For
example, if P1 was the lead pump before the trigger, P2 will become the lead pump after the
trigger.
RELIEF VALVES
Checking Relief Valves Current Setting
1. With the pump running notice the reading on the discharge pressure gauge.
2. Slowly close the discharge ball valve.
3. Operate only one pump at a time in manual mode.
4. The reading on the discharge pressure gauge will increase.
5. Make a note of the pressure reading when the valve is fully closed; this value is the pressure
relief valve setting. It should be approximate 15 to 20 psi greater than the specified pump
discharge pressure.
6. Open the discharge valve and turn the pump off.
7. If the pressure relief setting in satisfactory, repeat for the other pump.
VIKING PUMP, INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA
©2006 VIKING PUMP, INC., All Rights Reserved