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NOTE!
Use only rotors made from suitable materials and of the cor-
rect type.
10.
Clean the fit bores of the rotors.
11.
Lubricate the fit bores of the rotors with a suitable oil/lubricant
that is compatible with the medium, and also lubricate the O-
ring (7) of the rotating holding bush if its resistance allows
this.
12.
Attach the (new) rotors.
For screw rotors:
Attach the rotors uniformly in pairs, one
clockwise and one counter-clockwise screw rotor each.
NOTE!
Optimum rotors
can also be inserted one after the other:
— For polymer rotors pay attention to the exact positioning
so that the rubber coating is not damaged:
13.
Rotate the shafts so that the parallel keys (6) are at 12
o'clock.
14.
Insert the rotor with counter-clockwise screw profile [L] at the
bottom.
Maintenance and Repairs
BA-Classic FL_en-US, 03.05.2018
www.boerger.de / www.boerger.com
133