2.
Increasers, if used in discharge line, should be placed between the pump and check valves.
3.
If quick-closing valves are installed in the system, cushioning devices should be used to protect
the pump from surges and water hammer.
2.10
Connection of piping
Connect suction and discharge piping to the pump. Rotate pump shaft several times by hand to be sure
there is no binding and that all parts are free. Recheck alignment.
NOTICE:
On non-metallic pumps, use gaskets which are suitable for the flanges. PTFE envelope style is
recommended.
2.11 Rotation
Serious damage may result if pump is run in wrong direction. Before coupling is connected, the motor
should be wired and the direction of rotation checked. The direction of rotation is marked on the pump.
Make sure driver rotates in the same direction.
2.12 Connection of coupling
Connect coupling. Follow the manufacturers instructions. Spider-Insert type couplings are pre-assem-
bled. If a coupling guard is furnished with the unit, make sure it is securely fastened.
2.10
Connection of piping
3107 Installation, Operation and Maintenance Instructions
21