Nilfisk-ALTO 91WS - Manual (Page 23)

1-22 American-Lincoln
91 WS
HOW TO SWEEP
The sweeper is intended for use on hard relatively flat surfaces such as cement, asphalt and wood block floors.
Exercise care when maneuvering to keep wheels from dropping off curbs or into pot holes. Do not sweep over
obstructions.
The sweeper is designed for dry sweeping conditions. Wet clay and muddy type material will adhere to surface
of sweepingchamber and hopper. Sweeping performance will degrade if these surfaces are not kept clean. Large
heavy objects such as bricks, large stone and iron parts should not be swept. Damage to the main broom or
other sweeping system components is possible. String, rope, wire or or metal strapping longer than 18 inches
should not be swept. These items have a tendency to wrap around moving parts. This can cause damage or
degrade sweeping performance.
SWEEPING GUIDELINES
In actual sweeping, there is no single pattern that can be set forth in the manual. Each installation has its own
conditions, and the operator can readily set his own pattern using these guidelines.
1.
Pick up large debris and remove bulky cartons from aisles before sweeping.
2. Use the machine to sweep debris from the narrow aisles into the main aisle.
3. After the machine has made a sweeping run, move the main broom lever to the “UP” position and turn the
key switch to the “OFF” position. The filter shaker will operate for a short period of time. After the shaker
stops, turn the key switch to the “ON” position, lower the main broom to the “SWEEP” position and continue
sweeping.
NOTE
Replace main broom when bristles are reduced to 3.75 inch (9.5 cm) length. To order replacement brooms, see
MAIN BROOM section of this manual. Replace side broom when bristles fail to sweep debris into the path of the
main broom. To order replacement brooms see SIDE BROOM section of this manual.
SWEEPING VARIOUS TYPES OF DEBRIS
For heavy sand, dirt or excessive scattered debris, travel slowly with machine to allow main broom to deliver
best results. Do not expect a completely clean surface on the first pass under these conditions.
Sometimes it is necessary to have extra broom pressure where debris is excessively heavy. See “Main Broom
Adjustment” for information on adjusting broom to a “heavy” sweeping pattern. Material that adheres to the
sweeping surface: This type of wet or sticky material will require more broom pressure, as in the above para-
graph.
OPERATING INSTRUCTIONS
P4134/0001
SIDE AISLES
MAIN AISLE
SIDE AISLES
P4134 FIGURE 13