Impeller Type - Alamarin Jet COMBI-FRAME AJ 285 Repair Manual

Figure 38. Impeller rings
3.1. Impeller type
The type of the impeller is defined according to the number, pitch, and surface
area of the blades. The number and total pitch of the blades are unambiguous,
but the surface area may vary according to the diameter and length of the
blades.
The impeller type that is used varies according to the situation because the
AJ 285 can be attached to various types of motors. Therefore, each impeller
must be type-marked. The type marking has been punched into the rear of
the impeller hub (figure 39). The type of the impeller must be declared, for
example, when ordering a new impeller. The format of the type marking is
"285-X/N+T.
Figure 39. Impeller type marking
28
Impeller
Repair manual
KM/285/EN/1.1.0