Xylem AquaForce Variable Speed Package System - Manual (Page 19)

Pump station startup
Confirm the job site voltage
1. Check these items before you apply power or close the disconnect:
a) Check all of the power wiring connections and secure them as required.
b) Confirm with the owner/installing contractor if there are plans for any required
building automation or remote connections.
c) Inspect and/or install any customer remote terminations.
2. Make note of the design data supplied on the data label. The label is located on the
inside of the control panel door.
3. Use a volt meter to check the voltage on the incoming power terminals at the
disconnect.
4. Compare the voltage to the data on the nameplate.
Connect the storage tank
DANGER:
Explosion hazard. Prevent tank explosion. Do not install the tank when the system shut-off
pressure exceeds the tank pressure rating.
DANGER:
Explosion hazard. Prevent tank explosion. Install a pressure relief valve on the tank inlet
with a set point no greater than tank rating.
1. Precharge the storage tank before you connect it to the system.
The air precharge needs to be 5 to 10 psi less than the system operating pressure.
2. If the storage tank has already been installed and not precharged, then disconnect the
system piping from the tank and equalize it to atmospheric pressure. If an isolation
valve and drain are provided, then use them.
3. Apply air pressure to the tank through the air charging valve and pressurize to field
conditions.
This needs to be equal to the NFSD restart pressure of 5 to 10 psi below the operating
pressure.
4. Reconnect the tank to the system piping. Tank should be installed on the discharge
side of the system.
Check for available suction water
1. Open all supply, discharge, and pump isolation valves. Also open any other package
valves.
2. Close the bypass valve if it is installed in the piping by others.
3. Inspect the capillary tubing from the pump discharge to the suction header:
a) Open the petcocks that feed the tubing.
b) Make sure that the plastic tubing does not touch any metal surface. Protect the
tubing with insulation in order to prevent abrasion where it can possibly touch
metal.
4. Open a faucet in order to create a demand for water on the system pressure piping.
5. Observe the suction pressure and confirm that it is equal to or greater than the suction
pressure listed on the nameplate. System is designed for a specific suction pressure.
Deviation results in degraded system performance. Contact factory if suction pressure
varies from design specifications.
Commissioning, Startup, Operation, and Shutdown
AquaForce Variable Speed Package System Mechanical Installation, Operation, and Maintenance Manual 17