4F Maschinentechnik LIMPAR Akku 26 User manual

Operating Manual
Akku 26 street sweeper
Language of the original operating manual: German. Retain for future use!
4F Maschinentechnik GmbH
Am Gasspeicher 6, D-49453 Rehden
Phone: [phone], Fax: [phone]
E-mail: [email protected], Internet: www.4-f.de
© 4F Maschinentechnik GmbH
4KM-BK-

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Preface
Dear Reader,
This operating manual conveys all information necessary for
safe operation of the
Limpar Akku 26 street sweeper
This street sweeper was designed and constructed in
accordance with the state of the art and recognized safety rules
and regulations. Nevertheless, dangers can arise that can
jeopardize people and property, because it is not possible to
eliminate all potential dangers while maintaining full
functionality. However, you can prevent accidents resulting from
these dangers by reading and observing the information in this
operating manual. In addition, you will be able to take full
advantage of the performance and functions of the street
sweeper and to avoid unnecessary faults.
CAUTION!
During assembly, operation and servicing of the street sweepe
r
there is a danger of personal injury and property damage.
Therefore:
Prior to assembly and operation of the street sweeper, first read
this operating manual carefully. Observe the notices and
information contained therein at all times, especially the safety
information.
If the operating manual (or parts of it) is lost or becomes
illegible, request a new copy from the manufacturer.
This operating manual applies only to the street sweeper
specified on the cover and at the bottom of each page.
Compare this information with the specifications on the type
plate of the street sweeper.
After reading the operating manual, store it in a safe place for
the entire life of the street sweeper for future reference.
In the event that you sell the street sweeper, pass the operating
manual on to the next owner.
All information, illustrations and dimensions in this operating
manual are non-binding. No claims whatsoever can be derived
therefrom.
Preface

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Reprinting and reproduction of any type, including excerpts,
requires the written permission of the manufacturer.
Conversion or modification of the street sweeper requires the
written permission of the manufacturer. Unauthorized
modifications will void all liability on the part of the
manufacturer, as well as the warranty.
Use only original replacement parts and accessories that are
approved by the manufacturer. Otherwise, the performance,
functionality or safety of the street sweeper could be adversely
affected. Use of other than original replacement parts will
therefore void any liability for the resulting damages.
Contact your dealer to order replacement parts or accessories.
You must also comply with the operating manual of the charger
manufacturer. You will find it in the box for the charger.
4F Maschinentechnik GmbH assumes no liability for the content
of the charger manufacturer’s operating manual.
Explanation of symbols, signs and directions
For better understanding the following conventions are used in
this operating manual:
1.
To emphasize important information, the following types of
special notices are used:
DANGER!
There exists an immediately dangerous situation that will result
in death or severe injuries if not avoided.
WARNING!
There exists a potentially dangerous situation that can result in
death or severe injuries if not avoided.
Preface

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CAUTION!

There exists a potentially dangerous situation that can result in
slight or minor injuries or property damage if not avoided.
ATTENTION!
...indicates a potentially dangerous situation that can result in
property damage if not avoided.
NOTICE
…provides useful tips and suggestions, as well as information fo
r
efficient and trouble-free operation.
...refers to important information in other sections and documents.
2.
Some texts serve a particular purpose. They are marked as
follows:
Enumerations.
Instructions, such as a sequence of activities.
3.
The text refers to sides of the street sweeper (left, right, front,
rear). Left or right means the side seen by the operator of the
machine when looking in the direction of travel. The sweeping
brush of the machine is mounted in the front, the steering bar in
the rear.
Preface

Limpar Akku 26 11/22/2021 page 5 of 38
Table of contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Intended use . . . . . . . . . . . . . . 7
1.2 Unintended use . . . . . . . . . . . . . . . 8
1.3 Product monitoring . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Operator and personnel requirements . . . 9
1.5 Danger zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.6 Work clothing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.7 Guards and safety devices . . . . . . . . . . . 11
1.7.1 Safety switches . . . . . . . . . . . . . . . . . . . . 11
1.7.2 Sweeping brush deck . . . . . . . . . . . . . . . . . . 11
1.7.3 Protective cover . . . . . . . . . . . . . . . . . . . . . 11
1.8 Safety and accident prevention regulations . . . . 12
1.9 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.10 Safety signs on the street sweeper . . . . . . . 14
2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.1 Type plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.3 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2 Steering bar adjustment . . . . . . . . . . . . . . . . . . . . . . 19
3.3 Mounting the swivel support for lateral adjustment
of the sweeping brush . . . . . . . . . . . . . . . . . . . . 21
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1 Preparatory tasks . . . . . . . . . . . . . . . . . . . . 25
4.1.1 Steering bar adjustment . . . . . . .. . . . . . . . . . . 25
4.1.2 Height adjustment of sweeping brush . . . . . . . 26
4.1.3 Operation of the charger ,
charging of the battery . . . . . . . . . . . 26
Table of contents

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4.2 Sweeping operation . . . . . . . . . . . . . . . . . . . . . . . . . .27
4.2.1 Starting the motor . . . . . . . . . . . . . . . . . . . . . . 27
4.2.2 Shutting down the motor . . . . . . . . . . . . . . . . .27
4.2.3 Activation and deactivation of sweeping brush 28
4.2.4 Activation and deactivation of power drive . . . .28
4.2.5 Overload protection of the operating circuit . . .29
4.2.6 Lateral adjustment of the sweeping brush . . .. 29
5 Maintenance and repairs . . . . . . . . . . . . . . . . . . . . 30
5.1 Safety regulations for maintenance
and repairs . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.2 Regular maintenance tasks . . . . . . . . . . . . . . . . 32
5.2.1 Maintenance schedule . . . . . . . . . . . . . . . . . . .32
5.2.2 Maintenance records . . . . . . . . . . . . . . . . 32
5.2.3 Checking movement of the Bowden cable . . . 32
5.2.4 Checking tire pressure . . . . . . . . . . . . . . 33
5.2.5 Cleaning the street sweeper . . . . . . . . . . . . . . . .
. . 33
5.2.6 Checking the electrical connections . . . . . . . . .35
5.3 Maintenance and repair documentation . . . . . . . 34
6 Decommissioning and preservation . . . . . . . . . . . . 35
7 Faults and troubleshooting . . . . . . . . . . . . . . . 35
8 Accessories . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . .36
8.1 Sweepings collector . . . . . . . . . . . . . . . . . . . . . 36
8.2 Snow chains and snow plow . . . . . . . . . . . . . . . . . 36
8.3 Sweeping brushes for snow clearing . . . . .. . . . . . . . 36
9 Dealer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
10 Batteries and charger . . . . . . . . . . . . . . . . . . . . . . . . . . 36
11 Declaration of Conformity . . . . . . . . . . . .. . . . . . . . . . . . .37
12 Circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table of contents

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1 Safety
Familiarization with the safety notices and safety regulations is
necessary to ensure safe and trouble-free operation of the
street sweeper.
You must therefore read this chapter carefully before operating
the street sweeper, and observe the information and warnings.
Observance of the safety notices and warnings contained in the
relevant sections of the following chapters is also obligatory.
The manufacturer cannot be held liable in the event of failure to
observe the notices and warnings.
In addition to the information in this operating manual, you must
also take into account the relevant statutory regulations, in
particular the safety and accident prevention regulations.
1.1 Intended use
The Limpar Akku 26 may be used only for cleaning pathways
and surfaces paved with concrete, asphalt, paving stones or
slabs in outdoor areas.
Intended use also includes observance of all information
contained in the operating manual.
DANGER!
Any other use of the street sweeper than that described above can
cause dangerous situations for human beings and/or property
damage.
Therefore:
Use the street sweeper only for the intended purpose.
Observe all information in this operating manual at all times.
In particular, do not use the street sweeper for the tasks listed
in section 1.2. They are deemed contrary to the intended
purpose.
Safety

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1.2 Unintended use
Any use of the street sweeper that deviates from that described
in section 1.1 is deemed contrary to the intended purpose.
Unintended use of the street sweeper includes
use for cleaning unpaved surfaces, such as gravel paths,
use for cleaning roofs or flat roofs,
use in enclosed areas, such as halls or stables,
use for transporting people or objects,
use for moving or towing objects or vehicles,
operation in faulty condition or with safety-related faults,
operation without the standard protective covers mounted,
use by unsuitable personnel.
1.3 Product monitoring
Please notify us immediately if faults or problems occur during
operation of your street sweeper, or in the event of accidents or
near accidents.
We will help you to find a solution for the problem and we will
incorporate the knowledge gained in our future work.
Safety

Limpar Akku 26 11/22/2021 page 9 of 38
1.4 Operator requirements
and personnel requirements
Use of the street sweeper is permitted only for personnel who
have reached the age of 16,
are physically and mentally capable,
have read and understood this operating manual, and
can be expected to carry out the tasks assigned to them in
a responsible manner.
Commissioning, maintenance, repair and disposal of the street
sweeper must be carried out by the dealer or personnel with the
appropriate technical training and experience.
1.5 Danger zone
The danger zone is the area in which the safety or health of
human beings is jeopardized. Therefore, no one is allowed to
enter this area during operation of the street sweeper.
WARNING!
A
nyone in the danger zone is in danger of being injured when the
street sweeper starts driving and from sweepings being kicked up.
Therefore:
Operate the street sweeper only if no one is within the dange
r
zone.
Watch the danger zone attentively and stop the street sweepe
r
if anyone enters the danger zone.
The danger zone is depicted in the drawing (Figure 1 on the
following page):
The street sweeper is shown in top view. The danger zone is
designated by the hatched area.
The danger zone is defined to the right and left side by the
width of the sweeping brush. Toward the front of the street
sweeper the length of the danger zone is 5 meters in front of
the sweeping brush.
NOTICE
When the sweeping brush is turned to the right or left, this change in
direction likewise applies for the danger zone.
Safety

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Safety
Figure 1:
Danger zone
2.5 m

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1.6 Work clothing
WARNING!
Unsuitable work clothing, such as loose-fitting clothing, kerchiefs,
neckties and scarves can be caught and pulled in by the sweeping
brush.
This will result in severe injuries.
Therefore:
Always wear suitable, close-fitting work clothing during
operation of the street sweeper and during maintenance and
repair work.
No special protective clothing is necessary for working with the
street sweeper. However, you should always wear close-fitting
work clothing that cannot get caught in the sweeping brush and
that is suitable for the weather conditions, as well as sturdy
shoes.
For commercial use, the owner is responsible for selecting
suitable work clothing and ensuring that it is worn by personnel.
1.7 Safety equipment and protective devices
1.7.1 Safety switches
The control levers for power drive and rotation of the sweeping
brushes are designed as safety switches. Pushing the control
levers down against the steering bar engages the sweeping
brush and power drive.
To stop the street sweeper, it is sufficient to release the control
levers.
1.7.2 Sweeping brush deck
The sweeping brush deck is mounted as a protective cover
above the sweeping brushes to protect operating personnel
from kicked up sweepings.
1.7.3 Protective cover
The V-belt drives inside the street sweeper are danger areas
that are protected by the front protective cover and the housing.
Safety

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1.8 Safety and accident prevention regulations
Observe the following information to prevent personal injury and
property damage. For commercial use, also observe the safety
and accident prevention regulations of the employers’ liability
insurance associations.
The street sweeper must always be operated with properly
mounted guards and safety devices (see section 1.7). This
equipment may be removed only for purpose of maintenance
and repairs. After completion of these tasks, the guards and
safety devices must be mounted again immediately.
Otherwise there is a serious danger of injury.
Use the street sweeper only for its intended use, to prevent
dangerous situations that can lead to injuries or death (for
intended use, see chapter 1.1).
Poor light conditions during operation can cause various
dangers. Operate the street sweeper only under sufficient
light conditions.
When sweeping along walls, there is a danger of the skin
being grazed. Avoid touching walls with your hands, and
wear protective gloves.
Maintenance and repair work may be performed only by the
dealer or by trained personnel.
Observe the safety stickers affixed to the street sweeper. Do
not remove them. If they have become illegible or have been
lost, they must be replaced (for meaning of stickers see
section 1.10). Please contact your dealer to obtain new
stickers.
Wear close-fitting clothing. Tie long hair back.
Safety

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Do not operate the street sweeper if it is in a defective
condition, since this can result in serious injuries. In the
event of faults, shut down the street sweeper and initiate
repairs.
Intended use of the street sweeper includes carrying out
the required maintenance and repair work, in particular
compliance with the maintenance intervals. If you fail to
carry out these tasks, trouble-free functioning of the
machine cannot be ensured. Dangers to people and
property can occur. We recommend that you keep
maintenance logs.
Shut down the street sweeper before carrying out
maintenance and repairs, and also before cleaning the
machine. Take measures (by removing the key from the
key-operated switch, for example) to ensure that no one
else can switch on the street sweeper. Otherwise there is a
danger of injury.
Use only original replacement parts and accessories that
are approved by the manufacturer. Use of other parts will
void any liability for resulting damages.
1.9 Disposal
When the street sweeper has exceeded its useful life, have it
disposed of by qualified specialists. The manufacturer assumes
no liability for damages resulting from improper disposal.
Safety

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1.10 Safety signs on the street sweeper
Warning!
Danger of injury due to failure to recognize danger zones.
The stickers affixed to the street sweeper contain warnings of
particular dangers as well as information for correct operation.
They are provided as a supplement to the information in this
manual.
Therefore:
Observe the warning notices affixed to the street sweeper at all
times.
Do not remove any warning stickers.
Renew warning stickers if they start to come off or
have already been lost.
Stickers Meaning
Prior to using the street sweeper, personnel
must first read the operating manual. All
information contained therein must be
observed at all times.
Position: On electric panel in the operator’s
field of view.
Warning of general dangers.
Position: At rear of machine in the
operator’s field of view.
Warning of kicked up sweepings.
Keep a distance.
Position: On the rear of the
brush deck (left).
Safety

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2 Description
The Limpar Akku 26 street sweeper is used for sweeping paved
surfaces in outdoor areas.
The street sweeper consists of a sheet steel housing in which
an electric motor is mounted. There is a 12V 28AH battery set
above the motor bracket. An arm in the front supports a
swiveling roller sweeping brush. The motor can be switched to
drive the sweeping brush and the drive wheels.
The street sweeper has a steering bar by which it is guided by a
walking operator and from which all control elements can be
reached.
2.1 Type plate
A type plate is affixed to the street sweeper with basic
information (see Figure 2). The type plate is on the left side of
the street sweeper.
Description
Figure 2: Type plate

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2.2 Overview
Figure 3: Components and control elements
Swivel support
(Lateral
adjustment of
sweeping brush)
Steering bar
Height adjustment
(Leaf spring with 3 holes)
Accessory
mounts
Sweeping brush
Support
wheel
Drive wheel
Description
Thermal cut-out
(Operating current
40A)
Charging port
24 V (AGM battery)
Figure:
Electric panel
Key-operated
switch
(Current on / off)
Control lever
Power drive
Height adjustment
Sweeping brush
Control lever
Brush drive

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2.3 Technical data
Technical data
Working width 70 cm
Brush diameter 25 cm
Weight 64 kg
Battery capacity (AGM type) 2x 12V 28 Ah (=>24V 28Ah)
Driving speed (Max. battery charge) 3.3 km/h
Motor ( DC ) 24 Volt 0.5 kW
Technical data

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3 Commissioning
CAUTION!
Danger of injury and danger of property damage due to
improper assembly of the street sweeper.
Therefore:
Preparation of the machine, including all necessary settings
and a test run, are included in the scope of delivery and
must be carried out by the dealer before handing the
machine over to the customer!
We recommend having two people assemble the street
sweeper.
3.1 Unpacking
Place the packed street sweeper on a level surface
Open the box at the top
Cut open the box at the four corners, down to the
ground.
Mount the drive wheels (see also the assembly
instructions for the drive wheels on the separate sheet in
the box or at the bottom of this page)
Align the steering bar as shown in section 3.2 and roll
the street sweeper away from the packaging.
Dispose of the packaging material in accordance with
local waste regulations.
Wheel
Here
Linchpin
Freewheel /
Catch
Shim
washer
Commissioning
Figure 4:
Mounting of drive wheels

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3.2 Steering bar height adjustment
3.2.1 Steering bar height adjustment
Preparation for operation
For mounting the locking finger for the steering bar height
adjustment, see Figures 5 to 7.
CAUTION!
Danger of injury and danger of property damage when raising the
steering bar.
When raising the steering bar there is a danger of being pinched
between the steering bar and the machine housing.
The Bowden cable can be pinched and damaged when raising the
steering bar.
Sheet metal parts could have burrs that can cause cuts.
Therefore:
Proceed with caution when raising the steering bar.
Watch out for the Bowden cables when raising the steering bar.
Wear work gloves.
On the bottom end of the steering bar there is a locking finger
on the right side that can lock into three holes of a leaf spring
underneath. For transport, the finger is mounted in a twisted
position to prevent it from poking through the box.
Put the locking finger into the correct position as shown in
Figure 5.
Commissioning
Task to be
performed
by a repair shop!
Figure 5:
Alignment of the locking finger

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Mount the two screws and allow the loose locking finger to
lock into the rear or middle hole of the leaf spring while you
align the steering bar. Slots are provided for centering of the
locking finger. In this position you can then tighten the two M6
screws. See Figure 6.
Commissioning
Figure 6: Correct mounting of the locking finger
The leaf spring is fastened in the housing on a bracket that
can be pushed back and forth somewhat in slots, so that the
locking finger can be easily inserted into all 3 holes. Figure 7
shows the screws that have to be loosened to adjust the leaf
springs.
The housing does not have to be opened, since the screws
are screwed into a threaded plate!
Figure 7: Leaf spring adjustment