Brush Maintenance - Tennant 3220 Manual Del Operador

OPERATION
5. Wind power cord around cord hooks rather than
loosely looped over handle.
6. Clean machine housing with an all purpose
cleaner and damp cloth.
WEEKLY (Every 20 Hours of Use)
1. Remove secondary filter and tap or blow off dust
build--up, filter is located below filter bag. Do not
clean with water. Replace filter if needed
(Figure 13).
2. Remove exhaust cover and inspect exhaust filter
(Figure 14). Replace filter if needed.
3. Inspect brush bristles for wear. If bristles are worn
to 14 mm (0.56 in) or less in length, see Brush
Maintenance.
LY (Every 250 Hours of Use)
QUARTER
Check motors for carbon brush wear. Replace brushes
when worn to 10 mm (0.38 in) or less in length.
Contact Service Center for carbon brush inspection.
WARNING: Hazardous Voltage. Shock or
electrocution can result. Unplug machine before
servicing.
8
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FIG. 13
FIG. 14

BRUSH MAINTENANCE

If brush bristles are worn to 14 mm (0.56 in) or less,
rotate the bearing blocks to extend brush life as
follows:
WARNING: Hazardous Voltage. Shock or
electrocution can result. Unplug machine before
servicing.
1. Remove metal brush shoe from brush base.
(Philips screwdriver is required.)
2. Remove brush assembly. Grip brush on opposite
side of belt and pull outward.
3. Inspect drive belt(s) for wear; replace if necessary.
4. Rotate both bearing blocks 180_ and reinstall
brush (Figure 15).
NOTE: Brush bearing blocks are labeled with
numbers. To extend brush life, position label "2"
outwards when reinstalling brush.
5. Replace metal brush shoe after brush is properly
installed.
1
1
FIG. 15
Tennant 3220 (05- -99)
2
2