ENGLISH
pag. 55
instruction manual
for use and maintenance serie MEC, STAR, AGRI
Standard blades are suitable for no-strong uses, for short and not frequent periods.
Special blades are made of a special material suitable for strong uses and for Rotary blades vacuum pump used in agricultural field.
These blades offer an excellent resistance to wear and mechanical and thermical stress. These are suitable for more frequent uses
and to suck thick sewages. They are recommended for installation with frequent uses even during the same day.
Apart from normal wear, it may be necessary to replace the blades following incorrect use of the Rotary blades vacuum pump. The
most frequent causes come from heat, lack of lubrication, entrance of sewage, high pressure or vacuum, formation of rust inside the
body due to prolonged inactivity.
With the heat too high pallets stretch to touch the plate front and rear, this causes the breakdown of the pallets.
Lack of lubrication means the blades are completely dry like the inside of the pump. This increases their fragility and causes them
to break lengthways.
The same type of breakage can be caused by entrance of sewage or by a too high working pressure.
A too high vacuum causes the blades to beat against the cylinder with consequent damage to the outside of the blades. Moreover,
the lining becomes wavy.
11.3.2 INSPECTION OF BLADES MEC/STAR/AGRI
To check the state of wear of the blades in the Rotary blades vacuum pump
proceed as follows:
• Remove the threaded inspection plug;
• Rotate the rotor until a blades lines up with the inspection hole;
• Compare the height of the blades with the reference ring on the rotor;
• Replace the entire set of blades when the height is less than the reference
ring on the rotor.
Figure 11
11.3.3 REPLACEMENT OF BLADES
1) Check that there is sufficient space at the back of the Rotary blades vacuum pump to be able to work easily; if there is not, the
Rotary blades vacuum pump should be taken off its support beforehand;
2) Remove the back
3) Extract the blades from the rotor;
4) Replace the blades;
5) Clean the Rotary blades vacuum pump.
6) Re-fit the back of the Rotary blades vacuum pump
7) Use original spare parts Battioni Pagani
®
only
Ask for Rebuild kit for rotary blades vacuum pump which is made of: original Battioni Pagani
®
blades, gaskets,
oilseals in one blister only.
