Xylem AquaForce Variable Speed Package System - Manual (Page 18)

Checks Checked
Check that the drain plugs are installed before filling system.
Inspect all piping joints for tightness.
Joints can become loose during transit due to vibration and shock.
Check all flanged joints for the proper torque.
Check that the system is full of liquid.
Check that all high points in the piping system are vented in order to remove trapped
air.
Check that all pumps and drivers are properly lubricated.
Check that the piping is clean and has been flushed.
Final installation checks
Installation checklist
CAUTION:
Serious damage to the pump may result if it is started dry. Make sure that the pump is
completely filled with liquid before it is started.
Check Checked
Check that the unit base is properly leveled, grouted, and secured.
Check that all lubrication points are properly lubricated.
Check that the outlet side of the high-temperature relief valve assembly (if option is
purchased) is connected to the drain with tubing or pipe sized 1/2 in. or greater.
Check that the shut-off valves to the transmitters are open.
Check that the pump and motor shafts are properly aligned.
Check that the pump rotation is correct.
Check that the piping is properly supported. This prevents strains on the unit.
Final adjustments
Make the final adjustments on these adjustable devices in order to match the exact system
requirements.
Thermal relief valve
An optional thermal relief valve is installed on the pump discharge in order to prevent
potentially dangerous thermal pressure buildup. The valve automatically opens on a
temperature increase and closes on a temperature decrease. This valve acts as a safety
device; do not remove or plug it. It is factory set to open and discharge when the water
temperature in the discharge header reaches between 125°F to 135°F (51°C to 57°C).
Make sure that the 1/2 in. NPT opening of this valve assembly is piped to a floor drain in
accordance with local codes.
After long periods of operation, the valve seat and disc can become worn or pitted. This
allows leaks through the valve in the closed position. You can replace internal parts, if
desired.
Low suction pressure switch (optional)
Adjust the setting to 10 psi below the rated suction pressure.
Commissioning, Startup, Operation, and Shutdown
16 AquaForce Variable Speed Package System Mechanical Installation, Operation, and Maintenance Manual