Check And Top Up The Battery Acid Level; Changing Fuses; Replacing Side Brush; Checking And Adjusting Sweeping Area Of The Side Brush - Kärcher KMR 90/45 R Operating Instructions Manual

Operating instructions
Check and top up the
battery acid level
Danger!
Always heed safety precautions for
handling batteries!
! Screw out all cell plugs
! Draw a samble from each cell
with the battery hydrometer
! Return each acid sample to the
same cell
At 20 °C, the acid of a fully-
charged battery has a specific
weight of 1,28 kg/l
The acid of a partially-charged
battery has a specific weight
between 1,00 and 1,28 kg/l
The specific gravity of the acid
must be identical in all cells
! If the battery acid level is too low,
top-up the cells with distilled
water until the top edge of the
plates is just covered with liquid
! Charge the battery until a specific
weight of 1,28 kg/l is reached

Changing fuses

1. Drive control/electronics fuses
The fuses for the drive
control/electronics are installed
under the front covering.
The front covering must be removed
when a fuse needs replacing.
Warning!
Disconnect the battery prior to
replacing a fuse.
! Unscrew the screws at both sides
of the covering
Note:
Longer screws are used in the
upper bore holes.
! Replacing blown fuses
! Refasten front covering
KM 90/45 R
Note:
— See the label on the control
electronics for the fuse
assignment
— Use only fuses with the same
current rating
2. Battery terminal fuse
! Removing rear trim panel
! Screw out fastening screws of
unit cover
! Open unit cover
! Disconnect connecting cable at
negative terminal post (1)
! Loosen fastening nut (2) at fuse
bracket
! Replace defective fuses
! Retighten fastening nut (2)
! Connect connecting cable to
negative terminal post (1)
! Close unit cover
! Screw the cover's fastening
screw back in
! Mount rear trim panel
Note:
— Use only fuses with the same
current rating

Replacing side brush

! Unscrew Allen screw of side
brush fastening at carrier
! Slip new side brush on carrier
plate
! Fasten with Allen screws
English
Checking and adjusting
sweeping area of the side
brush
! Raise the side broom
! Drive sweeper over a flat, smooth
surface covered with a clear layer
of dust
! Lower side brush and start up
! Raise the side broom
! Drive aside backwards
! Check the sweep mirror
Width of sweeping range should be
between 40 - 50 mm
Note:
— The sweeping pattern is
automatically adjusted to wear of
the brushes due to the floating
suspension of the side brush.
— Replace the side brush when the
bristles are too worn.
28