Commissioning, Startup, Operation, and Shutdown
Model 3410 Installation, Operation, and Maintenance Manual
36
b) Set the indicator button on the pump flange in the axial direction of the nozzle.
If the indicator moves as the filling proceeds, then the anchors and supports are not
adequate or are not set properly. Take corrective measures.
Start the pump
1. Close the drain valves.
2. Completely open all valves in the suction and discharge lines.
3. Turn on the seal water to the stuffing box.
These lines must always be left open if the pumped fluid is dirty or if there is the possibility
of air leaks.
4. Prime the pump.
NOTICE:
Make sure that the pump is properly primed. If it is not, then shut down the pump and
correct the condition.
5. Start the pump driver.
Turbines and engines can require a brief warm-up period. Consult the instructions provided
by the engine manufacturer.
6. When the pump is operating at full speed, make sure that the check valve has opened.
The check valve must open five seconds or less after startup in order to prevent damage to
the pump by operating at zero flow.
7. Adjust the liquid seal valves to produce the recommended pressure for either the
mechanical seal or the packed stuffing box.
Operational checklist
Check
Explanation/comment
Checked
Driver rotation
Check the rotation each time the motor leads are discon-
nected.
WARNING:
Check the rotation of the power unit
and pump in relation to that of the
drive as shown by the arrows on
the case. Rotate the drive manually
before you apply power-checking
rotation. Do not operate in the re-
verse direction of these arrows as
serious damage or injury can occur.
Stuffing box adjustment
Make stuffing box packing gland and lubrication adjust-
ments.
Flow
It is difficult to accurately measure flow rate (volume/
time). Any of the following methods of measuring can be
used:
• Venturi meters
• Flow nozzles
• Orifice plates
• Timing the draw down in the wet well
Record any reading for future reference.