Xylem P81547D Series 90 In-Line Centrifugal Pump - Manual (Page 17)

Pump rotation is clockwise when viewed from the back of the motor. An arrow is
provided to show rotational direction.
3. Lock out power to the driver.
Lubrication requirements
Motor size Lubrication schedule
5 hp and smaller These pumps are permanently lubricated.
7.5, 10, and 15 hp These pumps are furnished with grease fittings and should be
lubricated in accordance with the nameplate instructions from the
manufacturer.
Xylem supplies a high quality lubricant specifically for this
purpose which you can purchase from your Xylem representative
(part number L23401).
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
WARNING:
Pressurize the pump body slowly while you check for leaks at all joints with gaskets. Failure
to follow these instructions can result in serious personal injury and/or property damage.
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) Restart the driver.
6. Monitor the pump while it is operating:
Commissioning, Startup, Operation, and Shutdown
16 Series 90 Installation, Operation, and Maintenance Manual