OMAC B430 - 4.1 Intended use; CHAPTER 7: SPARE PARTS OF THE B SERIES LDPU; 7.1 List of spare parts and section drawings of the lobe displacement pump; 7.3 How to order spare parts

15 - The horizontal sections of the suction pipe must be a bit inclinated towards to the top in order to avoid the creation
of air pockets, which can damage the pump priming.
16 - In vacuum sucking reduce at min. the friction losses
due to suction pipe. Arrange a check valve on outlet side
in order to:
– avoid the air or liquid reflux during the pause so that to
keep the piping completely full;
– to make easier the starting on load.
7
RIGHT
WRONG
Air
→
A = foot valve
B = check valve
Fig. 6
RIGHT
WRONG
Air
→
Air
→
Fig. 7
Fig. 8
VACUUM
VACUUM