AquaForte IH30 Gebrauchs- Und Installationsanleitung Seite 6

* The pump inlet/outlet union size: optional with 48.5/50/60.3/63mm
2) Flooded suction systems should have gate valves installed on suction and return line for
maintenance; however, the suction gate valve should be no closer than seven times the
suction pipe diameter as described in this section.
3) Use a check valve in the return line where there is significant height between the return line
and the outlet of the pump.
4) Be sure to install check valves when plumbing in parallel with other pumps. This helps
prevent reverse rotation of the impeller and motor.
4.4 Check before initial startup
1) Check whether pump shaft rotates freely;
2) Check whether power supply voltage and frequency conform to the nameplate;
3) Facing the fan blade, the direction of motor rotation should be clockwise;
4) It is forbidden to run the pump without water.
4
Return to pool 63mm
350mm
Suction 63mm
Elbow
Figure 2