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19
PI Operation Manual
The startup procedure is as follows:
1. Before starting the pump, check the security of all bolting, piping, and wiring.
2. Check all gauges, valves and instruments for proper working order.
3. Check all equipment for proper rotation.
4. Verify that the discharge valve is closed.
5. Open the suction valve.
6. Open discharge valve and allow pump to fill with fluid. Since the pump is not self-venting, the
venting valve located in the discharge side must be opened, to allow any trapped air to vent when
the pump is filling with fluid. Once the air has come out and fluid leaves through the venting valve,
close the venting valve.
7. Keep the valves open approximately 60 seconds to ensure that pump is completely full of fluid.
8. Close discharge valve.
9. Start, and IMMEDIATELY STOP, the driver and observe the rotation of the shaft.
10. Correct rotation should be in direction of rotation arrow.
If shaft rotation is incorrect, consult driver manufacturer’s instructions in order
to change rotation.
11. Priming accomplished and correct shaft rotation established, the pump is ready for
continued operation.
12.
Ensure the discharge valve is open to approximately ¼ fully open.
13. Start driver again, and completely open the discharge valve IMMEDIATELY when the
operating speed has been reached.
Danger: Do not allow discharge valve to remain closed for any length of time. Pumped
fluid temperature will rise excessively causing damage to pump.
5.3 OPERATING CHECK
During the initial operating hours, the pump should be monitored constantly. It is thus possible
to detect irregularities immediately and to take appropriate measures for their elimination (See
SECTION NINE - TROUBLESHOOTING CHART).
