Xylem IM158 R04 Model SMVT - Manual (Page 22)

20 SMVT Installation, Operation and Maintenance Manual
V. Commissioning, Startup, Operation
and Shutdown
Overview
This section covers the basic procedures to use in preparing your pump for startup, starting,
operating and shutting it down. DO NOT CONTINUE UNTIL ALL PARTS OF THE
INSTALLATION PROCESS (SECTION IV) HAVE BEEN COMPLETED.
Priming
Never start the pump until it has been properly primed. Several different methods of
priming can be used, depending upon type of installation and service involved.
Warning: SMVT pumps are not self priming and must be fully primed at all
times during operation. Loss of prime can lead to excessive heat and severe
damage to the pump and seal.
Suction Lift (Liquid below Pump Suction):
1. Install a foot valve at suction end.
2. Remove the vent plug. See Figure 16.
3. With a vented funnel, completely fill the casing with liquid at the vent plug opening.
4. Re-install the vent plug.
5. Open the suction valve.
Flooded suction (Liquid above Pump Suction):
1. Close the discharge valve.
2. Remove the vent plug. See Figure 16.
Figure 16: Vent/Drain Plug Locations
3. Slowly open the suction valve until liquid flows out of the vent plug opening.
4. Re-install the vent plug.
5. Open the discharge valve.
Commissioning, Startup, Operation and Shutdown