Thrush PC2G - Manual (Page 2)

Figure 1
MOUNTING
The pump unit should be set on the foundation, being careful not to damage the threads on the
foundation bolts. The flexible coupling halves should be disconnected. Shims should be inserted
and the pump leveled. A spirit level should be used on the faces of the flexible coupling halves
and on the suction and discharge flanges. If the pump has threaded nozzles, a short piece of
pipe inserted in the nozzles will serve as a smooth surface for a leveling reference point. The
shims should be adjusted until the pump is leveled horizontally and vertically. Tighten the
foundation bolts finger tight.
GROUTING, IF BASE PLATE IS USED
Grouting the base plate prevents lateral movement of the base plate and improves the vibration
absorbing characteristics of the foundation by increasing its mass. A wooden dam should be
constructed around the base plate to contain the grout while it is being poured. The entire base
plate should be filled with grout. Allow 48 to 72 hours for grout to dry. After grout is thoroughly
dried, firmly tighten foundation bolts.
PIPING
The piping practices you follow will directly affect the efficiency and power consumption of your
pump. Pay particular attention to the seemingly insignificant details involved in piping for they
make the difference between a good and bad installation. BOTH THE SUCTION AND THE
DISCHARGE PIPING SHOULD BE INDEPENDENTLY SUPPORTED NEAR THE PUMP;
LIBERAL USE OF PIPE HANGERS AND SUPPORT BLOCKS WILL PREVENT EXCESSIVE
STRAIN ON THE PUMP CASING AND THE PIPE JOINTS. The suction diameter should be at
least the same diameter as the suction nozzle on the pump and preferably larger. Use of a
smaller diameter pipe will result in loss of head due to friction. All joints must be tight to maintain
prime on the pump.