Function; Roller Drive/Motor; Control Electronic; Figure 050-1: Roller And Drive Components - Miele B 890 Technical Information

Technical Information
2

Function

2.1

Roller Drive/Motor

A single drive shaft is connected to the roller via a free-wheel bearing which
permits the roller to turn in one direction only. The drive shaft is mechanically
connected to the drive motor (M17). Power to the motor (24VDC) is controlled
by the user's actions via the foot plate (refer to Section 010-2.3). Speed
control is via a 5-stage switch.
ROLLER

Figure 050-1: Roller and Drive Components

A Free-wheel retainer screws (3)
B Roller retaining screw (1)
2.2

Control Electronic

The B 890 and B 990 are equipped with two (2) separate electronic board
assemblies: the main electronic (N2), illustrated in Section 010-2.1, and the
control electronic (A1). The control electronic is attached to the inside of the
top cover, and houses the user controls. See Figure 050-2.
FREE WHEEL
BEARING
A
B
40
B 890/B 990
DRIVE SHAFT
DRIVE MOTOR (M17)