Xylem AC5660 Series A-C 1500 Vertical In-Line Pump - Manual (Page 18)

1. Unlock power to the driver.
2. Make sure that everyone is clear, and then jog the driver long enough to determine
that the direction of rotation corresponds to the arrow on the pump.
3. Lock out power to the driver.
Prime the pump
CAUTION:
Do not run the pump dry.
Make sure that the pump body is full of liquid before startup. If the system does not
automatically fill the pump body with liquid, then you must manually prime the pump.
1. Loosen the vent plugs on the pump body.
2. While venting the air from the pump body, rotate the pump shaft a few times by hand.
3. After all air has been purged from the pump, close the vent plugs.
Start the pump
CAUTION:
• Observe the pump for vibration levels, bearing temperature, and excessive noise. If
normal levels are exceeded, shut down the pump and resolve the issue.
Before you start the pump, you must perform these tasks:
• Open the suction valve.
• Open any recirculation or cooling lines.
1. Fully close or partially open the discharge valve, depending on system conditions.
2. Start the driver.
3. Slowly open the discharge valve until the pump reaches the desired flow.
4. Immediately check the pressure gauge to ensure that the pump quickly reaches the
correct discharge pressure.
5. If the pump fails to reach the correct pressure, perform these steps:
a) Stop the driver.
b) Prime the pump again.
c) Restart the driver.
6. Monitor the pump while it is operating:
a) Check the pump for bearing temperature, excessive vibration, and noise.
b) If the pump exceeds normal levels, then shut down the pump immediately and
correct the problem.
7. Repeat steps 5 and 6 until the pump runs properly.
Commissioning, Startup, Operation, and Shutdown
16 Series A-C 1500 Installation, Operation, and Maintenance Manual