Adjusting Brushes - Nobles Speed Scrub 2601 Opérateur Manuel Et Liste Des Piéces

3. Reconnect solution tank drain hose securely after
draining.

ADJUSTING BRUSHES

On a monthly basis or after installing new brushes,
check the brush pattern to ensure brushes are
properly adjusted. Brushes that are installed
improperly will result in premature brush wear and
poor scrubbing performance.
NOTE: If machine is equipped with air- -filled tires, fill
solution tank before checking or adjusting brushes.
1. Apply a powdered substance, such as chalk, on a
smooth, level floor.
2. With scrub head raised, position scrub head over
test area.
3. Place blocks behind each drive wheel to keep
machine stationary and turn speed control knob to
slowest setting.
4. Lower scrub head to floor and apply maximum
down pressure.
5. Make sure that the solution switch is in the OFF
position.
6. Briefly rotate control grips forward for 2 seconds.
7. Raise scrub head and reverse machine from test
area.
8. Observe brush pattern on floor. Both brushes
should leave an even, parallel pattern (Figure 21).
CORRECT BRUSH PATTERN
Tapered
INCORRECT BRUSH PATTERNS
Pattern
FIG. 21
9. If brush pattern represents one of the incorrect
patterns, adjustment is required.
Speed Scrub 2601 Cylindrical Brush (06- -06)
Even and
Parallel
Pattern
Uneven
Pattern
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TO ADJUST BRUSH WITH UNEVEN PATTERN:
1. Lower scrub head to floor and apply maximum
down pressure.
2. Turn machine off and remove key if equipped.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface and turn off
machine.
3. Measure the distance from top edge of scrub head
to floor at front and rear. The dimension at front of
scrub head should be 0.25 in / 6.35 mm lower
than the rear (Figure 22).
FIG. 22
4. To adjust scrub head, slightly loosen the (4) lock
nuts on the roller mounting bracket and the jam
nut on the scrub head leveling knob (Figure 23).
Turn knob clockwise to lower rear of scrub head
and counter--clockwise to lower front. 13mm
socket wrench required.
FIG. 23
5. After adjustment is made retighten nuts and
recheck brush pattern. Readjust if necessary.
OPERATION
LEVELING
KNOB
LOCK NUT
13