Rotating Brush Heads - Increased Pressure Stages - HAKO Scrubmaster B 260 R Service Booklet

Mechanical components
7.
7.2.1 Rotating brush heads – contact pressure stages
The SCM B260R has 3 contact pressure stages for the brush unit.
The brush unit of the 3-disk rotating brush units is relieved using 2 springs in the 1st
contact pressure stage (Fig. 7.5 A and B) due to the extent of its own weight.
When the brush unit is removed, ensure that the tension in these springs is relieved
beforehand.
An additional spring (Fig. 7.5 C) is tensioned via the lifting element for the 2nd and 3rd
contact pressure stage, which also presses the brush head against the ground via a
bracket.
Slide 68