Manual safety regulation_EN

Operation

Incorrect use
of the end hose

12501901

Danger
Never bend the end hose over. Never attempt to straighten a bent
end hose by increasing the pressure. The end hose must not be inĆ
serted in the concrete. Extension of the placing boom and end hose
beyond the length specified on the boom rating plate is forbidden.
The end hose must be secured against falling.

BP07_320_1111EN 5ĂĊĂ107

Operation

Sucking in air

10800114

Agitator hopper Escaping compressed air

Danger
Entrapped air in the delivery line is dangerous as the compressed air
is released suddenly at the end of the delivery line and the concrete
can be blown out explosively. No air must be sucked in for this reaĆ
son.
You should therefore always fill the agitator hopper with concrete up
to the mixer shaft during pumping operations.

5ĂĊĂ108 BP07_320_1111EN

Operation

5.12.2 Notes on correct To supplement the notes given here, you will find comprehensive
pumping information on the following subjects in our Concrete technology"
brochure (BPĂ2158):
Bouncing boom − Concrete components
− Properties of freshly−mixed concrete
− Properties and conditions of freshly−mixed concrete

whenĂpumping
− Guide to avoid faults
− Specifications and regulations of the Technical Regulations"

You may request this brochure from Putzmeister’s After Sales
Department should you not already have a copy.

Note
If the boom bounces very heavily in pumping operations, check the
support and correct it as required. If the support is correct, reduce
the pump speed or change the boom position.

The boom can also bounce if air is taken in and compressed in the
delivery line. You should therefore make sure that the agitator hopper
is always filled with concrete to the mixer shaft and that no air is
sucked in.

BP07_321_0705EN 5ĂĊĂ109

Operation

Favourable boom
position

32202300

Last arm horizontal

Note
A horizontal position of the last arm is favourable for pumping.

If the last arm is lower than the horizontal, the concrete in this part of
the delivery line will flow more quickly as a result of its self−weight.
The flow velocity is lower if the arm position is horizontal, and thus
the wear on the delivery pipes and the end hose is less.

When the pump is stopped, only the content of the end hose flows
out if the arm position is horizontal; the content of the delivery line
can flow out if the arm position is below the horizontal.

The strokes of the pump cause forces to act along the delivery line
and thus along the boom. If the last arm is vertical, the forces also
act vertically on the boom end and move the boom up and down.
IfĂthe arm position is horizontal, the boom is moved forwards and
backwards, which causes a light rocking motion.

5ĂĊĂ110 BP07_321_0705EN

Operation

Damping valve The damping valve is used to control the switching speed of the
transfer tube.

20203903

Hare: damping valve switch position open
Snail: damping valve switch position closed

Note
You must close the damping valve when you are pumping soft
consistence concrete (snail symbol) as otherwise the transfer tube
switches over too harshly.

You must open the damping valve (hare symbol) when you are
pumping stiff consistence concrete as the concrete has a damping
effect.

BP07_322_9704EN 5ĂĊĂ111

Operation

5.12.3 Starting pumping The process from the start of concrete pumping to the time at which
a continuously flowing concrete stream exits from the end hose is
known as starting to pump.

The entire delivery line must be wetted at the start of pumping
operations.

11000501

Starting pumping with thin concrete

" Insert two sponge balls into the delivery line through the
wash−out port.

" Pour approximately 0.5 m3 thin concrete into the hopper.
" Switch the agitator on.
" Slowly pump the concrete into the delivery line.

The process of starting to pump with thin concrete is completed
when the two sponge balls and a solid concrete stream exit from the
end hose.

Note
You must begin pumping with a cement−water mixture (grout) if the
delivery lines are new, or if the delivery line has not been used for a
long time.

5ĂĊĂ112 BP07_323_9704EN

5.12.4 Pumping Operation

Correct mixing of the concrete influences pumping performance.

" Mix the concrete vigorously in the truck mixer at maximum
speed. Ensure that the concrete mix is uniformly prepared.

" Add concrete additives (deflocculants, set retarding
admixtures) and mix for at least a further four minutes.

" Pour the concrete from the truck mixer, silo, etc into the agitator
hopper.

" Switch the agitator on.
" Begin delivery.
Note
Start with a low output and increase this continuously after several
cubic metres.

BP07_323_9704EN 5ĂĊĂ113

Operation

Breaks in pumping You should avoid breaks in pumping as far as possible, as the
concrete in the delivery line can start to set, or can become
segregated due the vibrations of the machine. Note the following
points if breaks are unavoidable:
− Never leave the delivery line under pressure;
− Relieve the delivery line during short breaks in delivery by reverse

pumping briefly (2−3 strokes). Move the concrete at short intervals
by forward and reverse pumping;
− You should avoid breaks when pumping concrete with a low water
retentivity (tendency to bleeding) as the vibrations can segregate
the concrete; When you restart pumping, you must leave the pump
switched to reverse pumping until the transfer tube switches
across fully on both sides. Only then can you switch over to forĆ
wards pumping again.
− Pump the concrete back into the agitator hopper before long
breaks in pumping. You must mix the concrete again before you
recommence pumping.

Caution
Never use force to pump segregated concrete or concrete that has
become lumpy because it is beginning to set into the delivery line.
Blockages can very easily be caused in this way.

The boom can sink during lengthy breaks in pumping as a result of
the hydraulic fluid cooling. For this reason you must never leave the
boom unattended in the extended position during breaks.

5ĂĊĂ114 BP07_323_9704EN

Operation

5.12.5 Possible faults Faults may occur even if you have observed all the notes on correct
Blockages pumping. This section lists the faults occurring most frequently, and
indicates how to rectify them.

12

3 11000601

1 Wedged aggregate
2 Cement paste
3 Boundary layer

The following faults can lead to blockages:
− delivery line insufficiently wetted;
− transfer tube leaking;
− lines leaking;
− concrete leavings in the transfer tube and delivery pipes;
− unfavourable concrete composition;
− segregated concrete;
− set concrete.

Caution
In the event of blockages, pump the concrete immediately back into
the agitator hopper and mix it up. You can switch over to forwards
pumping when the delivery cylinders and the transfer tube are
switching over automatically again without problem. Begin pumping
again with care.

BP07_324_9704EN 5ĂĊĂ115

Operation

Overheating Continuous operation under high loading can lead to overheating of
Cooling the hydraulic fluid. All pumps have a thermo−electrical cut−out. The
pump is automatically shut down if the fluid heats up to over 90Ă_C.
Proceed as follows to prevent this:

" Check that the hydraulic fluid radiator is operating correctly. If
not, you can switch it on using the toggle switch on the control
cabinet.

" Reduce the output.

" Fill the water box with fresh water as soon as the fluid
temperature rises above 80_āC.

10600200

" Change the water continuously if the temperature continues to
rise.

" Look for the cause of fluid overheating and rectify it.

5ĂĊĂ116 BP07_324_9704EN

Operation

Additional cooling

10600400

" If you absolutely must supply additional cooling, direct the
water jet onto the drive cylinders and the piston rods of the
drive cylinders.

Caution
Never spray water on the hydraulic fluid reservoir. Damage may be
caused to the hydraulic pump.

Never use sea water or water containing salt for cooling. Otherwise
the chrome layer on the delivery piston rods and delivery cylinders
will be destroyed.

BP07_324_9704EN 5ĂĊĂ117

Operation

Restarting after Should the pump have, nevertheless, been switched off because of
overheating overheating, you should proceed as follows:

" Switch the pump off.

" Never switch the engine off, as the hydraulic fluid radiator must
remain in operation.

" Refresh the water in the water box.

" Wait until the hydraulic fluid has cooled if you are not able to
find the fault immediately.

" Once the red indicator lamp has extinguished, switch the
pump back on and continue pumping slowly at reduced
output.

" Determine the cause of the fluid overheating once pumping
operations have been completed and rectify the fault.

5ĂĊĂ118 BP07_324_9704EN

Operation

5.12.6 Special cases On some construction sites, the reach of the placing boom may not
be sufficient. If this is the case, you have the option of connecting a
Continuation continuation delivery line to the boom tip or of connecting a delivery
delivery line line using the lateral outlet, if the machine is equipped with this.

22202100

Connecting the continuation delivery line

Caution
No forces must be transferred from the stationary delivery line to the
placing boom or vice versa.

The stationary delivery line must not exert an additional load on the
boom. This will impair the stability of the machine.

The delivery hose must not be kinked, and not pulled taut either. If
kinks occur, blockages may occur also. If it is pulled taut, forces may
be transferred that may lead to damage to the structure, to the delivĆ
ery hose or to the placing boom.

Cooling of the hydraulic fluid in the boom cylinders may cause the
placing boom to be lowered during pumping operations and to the
delivery hose becoming taut. This may cause forces to be transĆ
ferred or the delivery hose to tear. Therefore, keep the delivery hose
under constant observation.

BP07_325_1201EN 5ĂĊĂ119

Operation

" Using the last arm, move the boom approx. 1.5 Ć 2 m towards
the stationary delivery line.

Danger
Risk of injury from unintentional boom movement. Switch off the
boom functions so that the arm assembly cannot move unintentionĆ
ally.

Leave the boom functions switched off during the assembly work
and during use of the continuation delivery line.

" If possible, place the last arm on a suitable supporting strucĆ
ture.

" Using the remote control, switch the locally latched toggle
switch (boom functions − 0 − support leg control) to 0".

" Remove the end placing hose.
" Attach a delivery hose (3 m long) to the connection point where

the end placing hose was.
" Connect the delivery hose and the stationary delivery line

using an SKH attachment coupling. Use an A seal.
" Secure the SKH attachment coupling firmly to the structure.

5ĂĊĂ120 BP07_325_1201EN

Operation

5.13 Cleaning Concrete leavings that are deposited inside the delivery line or
transfer tube can cause damage, will accumulate and reduce the
cross section. It is therefore essential that delivery lines and transfer
tubes are kept clean to allow troubleĆfree delivery the next time they
are used.

Concrete leavings deposited around the wear ring can impair its
function. For this reason, thorough flushing of the wear ring is reĆ
quired at the end of a job, unless the next pumping job follows within
30Ć60 minutes.

Cleaning instructions

Caution
To ensure that you do not damage the paint and other surfaces of
your machine, you must observe the following:
ć Never use sea water or other water containing salt for cleaning

purposes. You must rinse off any sea water that is deposited on
the machine.
ć Do not use any aggressive cleaning agents.
ć The water used for washing must not be hotter than 50 °C
(122 °F).
ć The spray nozzle must be held at least 40Ć50 cm from the paint
surface.

You must also observe the following during the first 8 working weeks:
ć During this time, you must not use any steam jet equipment since

the paint is not fully cured.
ć Furthermore, you may only use cold water for cleaning during this

period.

Lock the remote control units away in the driver’s cab during cleanĆ
ing operations. The remote control units do not have a watertight
casing. Perform the machine functions required during cleaning
operations from the control cabinet.

BP07_311_1111EN 5ĂĊĂ121

Operation

Leavings You should always find an appropriate use for the leavings to help in
environmental protection.

Environmental protection
The leavings should be used on the construction site. The leavings
should be used as building rubble or be recycled if this is not possĆ
ible.

We recommend that you use the Putzmeister Leavings sheet" to
allow you to make use of the concrete leavings. You can lay this
down under the hopper before opening the hopper flap. The conĆ
crete then flows out into the sheet and can be transported to the site
of concrete placement using a site crane.

A further option is to raise the machine on the rear support legs
enough to allow you to push a wheelbarrow under the hopper openĆ
ing and to catch the concrete in the barrow.

If the concrete is not to be used, you should bend a length of reinĆ
forcing steel into a hook and insert it in the concrete. Once the conĆ
crete has set, you can transport the lump of concrete away using a
site crane.

Caution
You must fold the arm assembly as described in the Driving posiĆ
tion" section if you decide to raise the rear of the machine to push a
wheelbarrow beneath the hopper opening.

5ĂĊĂ122 BP07_311_1111EN

Operation

Danger
Leave the agitator grille closed during all cleaning operations, since
you could be caught by the agitator.

The automatic agitator cutĆout must operate correctly if it is nevertheĆ
less necessary to open the grille.

Due to technical reasons, the hopper flap at the bottom of the
hopper cannot be secured. There is a risk of injury by crushing or
loss of limb by shearing if you reach inside. It is prohibited to reach
into the hopper from below through the hopper flap or through the
hinged elbow when it is open.

BP07_311_1111EN 1

Do not reach into the hopper.

Compressed air cleaning

Danger
There is an increased risk of accident when cleaning with comĆ
pressed air. The cleaning operation must only be carried out by a
subject expert or under expert supervision. Putzmeister accepts no
liability for damage caused by cleaning with compressed air, if perĆ
formed incorrectly. All persons participating in the cleaning proĆ
cedure must be instructed in the safety regulations.

BP07_311_1111EN 5ĂĊĂ123

Operation

Preparations for We recommend that you carry out the preparations described below
cleaning in good time to allow you to clean the delivery line and the concrete
pump directly the site use is completed.

Sponge balls and other
accessories

2 4
1 3

1 Sponge pig
2 Sponge cube
3 Sponge ball
4 Wash−out pig

You will need sufficient numbers of sponge balls and other cleaning
accessories to clean the machine properly.

5ĂĊĂ124 BP07_317_9704EN

Operation

Catch basket You must use the catch basket if you wish to force the concrete out
of the end of the pipe using water pressure or compressed air. It
must be designed such that the concrete can flow out unhindered,
but that the sponge ball (cube, pig) is trapped and that this simultaĆ
neously seals off the delivery line.

Danger
A catch basket on the end of the delivery line is an absolute requireĆ
ment if you are forcing the concrete out using compressed air, as
otherwise there is a risk of injury from the wash−out sponge and
concrete as they are expelled.

The use of the catch basket is recommended when water is used to
force out the concrete, to ensure that the delivery line is sealed off,
and no water can escape.

1

2 31201501

3

4

1 Coupling
2 Catch basket (closed pipe section)
3 Spring pin (on both sides)
4 Catch bracket

BP07_317_9704EN 5ĂĊĂ125

Operation

Wash−out adaptor The wash−out adaptor is used when the machine is cleaned using
water under pressure or compressed air.

Danger
A catch basket on the end of the delivery line is an absolute requireĆ
ment if you are forcing the concrete out using compressed air, as
otherwise there is a risk of injury from the wash−out sponge and
concrete as they are expelled.

1

2

6

5 43

1 Pressure gauge
2 Guard bracket
3 Connection for water or compressed air
4 Isolating valve for connection
5 Pressure dump bend
6 Pressure dump cock

5ĂĊĂ126 BP07_317_9704EN

Operation

Cement bags for high− Cement bags soaked in water and rolled up have proved useful
pressure water cleaning when cleaning the delivery line using water under pressure. The
cement bags prevent the washing water penetrating the concrete,
flushing the concrete out and causing blockages.

Rolled−up cement bags

" Roll up 1 − 2 empty cement bags together.

" Immerse the rolled−up cement bags in water for about
5Ăminutes before starting the cleaning operation.

Note
You may also prepare a short pipe section containing the cement
bags and a wash−out sponge before you start the cleaning operĆ
ation.

BP07_317_9704EN 5ĂĊĂ127

Operation

Mark the water hose The best way to clean the wear ring and seal ring on the transfer
tube is to rinse this area with water for some time from close up. You
must mark the water hose as described below to ensure that the
hose does not get cut by the switching transfer tube during cleaning.

Danger
The machine must be switched off and the hydraulic system, includĆ
ing the accumulator, fully depressurized when you are measuring the
hose length required, as otherwise there is a risk of injury as the
transfer tube switches over.

1

20700301

1 Adhesive tape marking

" Measure the hose length required on the outside of the transfer
tube. The nozzle on the hose should be located shortly before
the seal ring so that concrete leavings are washed away from
the area around the wear ring and seal ring when the nozzle is
set to spray.

" Mark the measured length on the hose with adhesive tape, or
similar.

5ĂĊĂ128 BP07_317_9704EN

Operation

5.13.1 Delivery line There are a number of options for cleaning a delivery line. Some of
the factors affecting which cleaning method you use include how the
How to clean which concrete pump has been used and what equipment you have availĆ
delivery line able.

Explanation of the Overleaf you will find a summary showing which cleaning method is
symbols recommended for the delivery lines listed. The symbols used in the
summary are explained below. The cleaning procedures are deĆ
scribed in the following sections.

The delivery line is connected to the concrete pump.
The leavings are pumped by the concrete pump out of
the hopper and onwards to the site of concrete placeĆ
ment. Cleaning is from the hopper onwards to the site
of concrete placement.

The delivery line is connected to the concrete pump.
The leavings are sucked back by the concrete pump
from the site of concrete placement into the hopper.
Cleaning is backwards from the site of concrete placeĆ
ment to the hopper.

The delivery line has been disconnected from the
concrete pump. The leavings are forced forwards from
the start of the delivery line to the site of concrete
placement using an external force (compressed air or
water under pressure). Cleaning is from the start of the
delivery line to the site of concrete placement.

The delivery line has been disconnected from the
concrete pump. The leavings are forced backwards
from the the site of concrete placement to the start of
the delivery line to using an external force (comĆ
pressed air or water under pressure). Cleaning is from
backwards from the site of concrete placement to the
start of the delivery line.

Recommended method of cleaning

Method of cleaning not recommended

Prohibited method of cleaning

Method of cleaning not possible

BP07_305_9701EN 5ĂĊĂ129

Operation

Summary of the methods of cleaning

Delivery line Leavings
from
to

Truck−mounted concrete pump no onwards Method of only with
Boom delivery line delivery line cleaning special
connected to Compressed air equipment
Stationary delivery line the boom tip Water under pressure
Suction cleaning only with
with onwards Compressed air special
delivery line Water under pressure equipment
connected to Suction cleaning
the boom tip Compressed air only with
Water under pressure special
Lateral outlet Suction cleaning equipment
Compressed air
Riser Water under pressure only with
Suction cleaning special
Downpipe Compressed air equipment
Water under pressure
Suction cleaning

5ĂĊĂ130 BP07_305_9701EN

Operation

Suction cleaning Suction cleaning is the simplest and least hazardous method of
cleaning. The method is described below.
Insert the wash−out
sponge " Pump the agitator hopper out until the concrete is at the level
of the top of the delivery cylinder tubes.

" Then switch the pump off.

20006201

Inserting a water−soaked wash−out sponge

" Insert a water−soaked wash−out sponge (cube) into the end
hose outlet.

BP07_306_1307EN 5ĂĊĂ131

Operation

Shift the boom to a
rising position

20006202

Suck the concrete from the top down the line

" Shift the placing boom into a uniformly rising position.
å This makes it easier to pump the concrete back as the conĆ
crete flows back under its own weight.

" Switch the pump to reverse pumping.
å The concrete and the wash−out sponge are pumped back
through the delivery line.

5ĂĊĂ132 BP07_306_1307EN

Operation

Check for the wash−out
sponge

20006203

Tapping on the delivery line with a hammer handle

" Tap on the delivery line with a piece of hardwood (hammer
handle) just ahead of the cleaning port during the washing out
process.

Note
Tapping produces deep dull noises there is concrete in the delivery
line. Tapping will yield high, clear sounds as soon as the concrete
and wash−out sponge have passed the point at which you are tapĆ
ping.

Use only a hammer handle to tap on the delivery line, as otherwise
the pipe may be damaged.

" Switch the pump off as soon as the wash−out sponge has
passed the point at which you are tapping.

BP07_306_1307EN 5ĂĊĂ133

Operation

Trapping the wash−out
sponge

20006204

Turn the wash−out port lid round

" Open the wash−out port on the transfer tube, turn the wash−out
port lid round and close it again with the pin pointing inwards.

" Switch the pump back to reverse pumping.
å The wash−out sponge will be trapped on the pin of the
wash−out port lid.

" Then switch the pump off.

" Open the wash−out port lid and remove the wash−out sponge.

" Repeat the washing out procedure, as a single reverse pumpĆ
ing pass of a wash−out sponge is not sufficient.

5ĂĊĂ134 BP07_306_1307EN

Operation

5.13.2 Hopper, delivery One possible method of cleaning the hopper, the delivery cylinder
cylinder and and the S transfer tube is described below.
S transfer tube
Note
This machine is equipped with an agitator safety cutout. As soon as
you open the grille, the agitator is halted and the pressure is dumped
from the accumulator. This means that the transfer tube will no longer
be able to switch over. In addition, the delivery pistons return to the
end position and the concrete pump halts. You must switch the conĆ
crete pump off and back on again to re−start it.

Danger
In no event should you insert the water hose, the spray gun or other
objects through the grille into the hopper to spray out the delivery
cylinders. Such objects may be trapped by the transfer tube as it
switches over and become damaged. The objects may be caused to
fly about, thereby causing an injury to you or other persons.

BP07_369_9711EN 5ĂĊĂ135

Operation

Drain off the leavings

40700201

Lay the sheet down

" Place the Putzmeister leavings sheet beneath the hopper.

" Open the hopper flap beneath the hopper and let the leavings
flow out of the hopper.

" Switch the pump over to reverse pumping.
å This pumps the leavings out of the delivery cylinders into
the hopper and thus out of the hopper opening.

5ĂĊĂ136 BP07_369_9711EN

Operation

30000500

Hoisting the concrete away

Caution
You may only hoist a maximum of 0.5Ăm3 concrete (approxiĆ

matelyĂ1200Ăkg) using the Putzmeister leavings sheet.

" Hoist away the concrete in the Putzmeister leavings sheet.

BP07_369_9711EN 5ĂĊĂ137

Operation

Spray out delivery
cylinder

40700202

Spray out the transfer tube and delivery cylinder with the
concrete pump running slowly in reverse

" Open the hinged elbow.

" Allow the concrete pump to run slowly in reverse.

" Spray the transfer tube out carefully downwards from the
hinged elbow. Slowly insert the hose up to the marking as you
do this (see the Mark water hose" chapter).

5ĂĊĂ138 BP07_369_9711EN

Operation

20700304

Insert the water hose into the transfer tube as far as the marking

" Hold the water hose in this position, introduced as far as the
marking, for several minutes, until only clean water runs out.
å This will flush out the two delivery cylinders alternately.

" Carefully spray out the hopper using a hose.
" Hose down all components that have come into contact with

concrete.

BP07_369_9711EN 5ĂĊĂ139

Operation

Cleaning the gap After each pumping operation, you must clean the transfer tube
between the transfer bearing thoroughly to prevent any concrete encrustation in the
tube bearing and the transfer tube bearing.
S transfer tube

12 3

12 4

6

5

BP07_807_1006EN 1

No. 0 Designation

1 S transfer tube
2 Transfer tube bearing
3 Square section seal ring
4 Areas that must be cleaned
5 Lubrication points
6 Hinged elbow

5ĂĊĂ140 BP07_807_1006EN

Operation

" Open the hinged elbow (6).
" Remove the square section seal ring (3).
" Carefully spray out the areas that are to be cleaned (4) on the

transfer tube bearing (2).
" Immediately after cleaning, use the lubrication point proĆ

vided (5) to grease the transfer tube bearing (2).
å Grease is visible between the S transfer tube (1) and

transfer tube bearing (2).
" Clean the square section seal ring (3).
" Grease the square section seal ring (3).
" Insert the square section seal ring (3).
" Close the hinged elbow (6).

BP07_807_1006EN 5ĂĊĂ141

Operation

Close hinged elbow The hinged elbow must be closed as follows:

1
2 23

54

6 BP07_808_1101EN 1

No. 0 Designation
1 Inscription "0" or recess
2 Retaining bolt for hinged elbow
3 Hinged elbow
4 Wedge
5 Tie bolt for retaining bolt (2)
6 Spring pin

5ĂĊĂ142 BP07_808_1101EN

Operation

Note
The retaining bolt (2) must be screwed to the tie bolt (5) as shown in
the above illustration (inscription "0" or recess (1) facing upwards).
Only then can the wedge (4) for closing the hinged elbow be fitted.

" Check that the retaining bolt (2) is seated securely.
" Check the mounting position of the retaining bolt (2).
" Close the hinged elbow (3) with the wedge (4).
" Secure the wedge (4) using the spring pin (6).

BP07_808_1101EN 5ĂĊĂ143

Operation

5.13.3 Truck superstructure Once the delivery line, hopper, delivery cylinders and S transfer
and post-washing tube have been washed out, you must thoroughly rinse down all
operations other parts of the machine that have come into contact with conĆ
crete. Concrete that is not washed off immediately can attack the
paint, especially if aggressive concrete additives have been used.

Caution
The delivery line, water box, water tank and water pump must be
drained fully if there is a risk of freezing. The water box must also be
drained at normal temperatures during longer breaks in pumping,
e.g. overnight and at weekends, etc. Leave the water outlet open
afterwards.

Danger of explosion
Atomized preserving agents are highly explosive. Keep away from all
sources of ignition whilst spraying.

Danger of poisoning
Cleaning agents, solvents or preserving agents sprayed in air can
enter the lungs and trigger serious damage to health. You should,
therefore, always wear respiratory protection during this work.

5ĂĊĂ144 BP07_318_1006EN

Operation

" Clean all seals and the seal seats.
" Grease the seals before replacing them.
" Clean the remaining parts of the machine by rinsing down

with water.
" At the lubrication point provided, grease all of the bearing

points in the hopper area immediately after washing it out.
å Grease is visible on the lubrication point.
" Grease all of the exposed piston rods.
" Grease the interior surfaces of the delivery cylinder.
" Lubricate the arm assembly.
" Grease the untreated surfaces of mechanical parts (race ring,
rollers, etc.).
" Then spray the metal components with an anticorrosion agent
or release agent.

Note
Please also read the High−pressure water pump" section if your
machine is equipped with a highĆpressure water pump.

BP07_318_1006EN 5ĂĊĂ145

Operation

5.14 Driving position Please also read the Driving, towing and loading" chapter.

Caution
There must be no concrete in the delivery line along the arm assemĆ
bly when the arm assembly is being folded. The arm assembly is deĆ
signed for certain working positions while the pump is in operation;
these are described in the Operating Instructions. However, when
the arm assembly is being folded, the arm is moved to positions
which would place too heavy a load on the arm assembly if the delivĆ
ery line were to be full.

Always observe the specified sequence for folding and unfolding the
boom. Failure to comply with the sequence may allow the crank lever
in the DĂhinge to compress the delivery line, adjacent hydraulic cylinĆ
ders or other components.
The boom support cradle may be damaged if you do not stop the
downward movement of the boom as soon as the arm assembly is
resting on the boom support cradle.
In order to avoid damaging the boom support cradle, guide the arm
assembly in with care. Stop the boom downward movement as soon
as the arm assembly is resting on the boom support cradle.

You should further note that the end hose (depending on the maĆ
chine’s equipment) is positioned loosely in the end hose brackets
and hangs down freely when the boom is being folded and unfolded.

5ĂĊĂ146 BP07_667_1507EN

Operation

5.14.1 Folding sequence Caution
Arm 5 You must have folded armĂ4 in fully before you fold armĂ5 in fully,
otherwise the DĂhinge crank lever will press against the elbow at the
boom tip.

Therefore, only fold armĂ5 in fully once you have folded armĂ4 in fully.

BP07_667_1507EN 1

Folding arm 5

" Fold armĂ5 in so that the boom tip is approximately 1Ăm from
the DĂhinge.

Arm 4

BP07_667_1507EN 2

Folding armĂ4 in fully

" Fold armĂ4 in fully until it rests against armĂ3.

BP07_667_1507EN 5ĂĊĂ147

Operation

Danger

BP07_667_1507EN 3

While the entire boom is in operation, it is prohibited to move the end
hose over the D hinge. In this arm position, the rod side D cylinder
hydraulic pressure is so high that the pressure limiting valve reĆ
sponds and the boom will gradually slump.

There is also the risk that arm 4 may slump uncontrollably if the arm
assembly is folded in or out any further.

5ĂĊĂ148 BP07_667_1507EN

Operation

Arm 5

BP07_667_1507EN 4

Folding arm 5 in fully

" Now fold armĂ5 in fully until it rests against armĂ4.

Arm 3

BP07_667_1507EN 5

Folding arm 3 in fully

" Fold armĂ3 in fully until it rests against armĂ2.

BP07_667_1507EN 5ĂĊĂ149

Operation

Arm 2

BP07_667_1507EN 6

Folding in arm 2 and catching the end hose

" Then fold in arm 2.
å The end hose will automatically drop into the catch
brackets.

Lowering the arm
assembly onto
the cradle

2.
1.

BP07_667_1507EN 7

Slewing and lowering the arm assembly

" Slew the arm assembly until it is in the storage position and
then lower it.

Note
The arms must be fully retracted and lie on the boom cradle proĆ
vided.
Check that the end hose is secured in the transport security device.

5ĂĊĂ150 BP07_667_1507EN

Operation

5.14.2 Retracting The same safety and operational regulations apply for retracting the
the supports supports as for extending them. See also the Supporting the maĆ
chine" chapter.
Interlock
1

2

12100101

Snaplock

" Remove the spring pins on all snaplocks.

" Unlock all snaplocks.

Note
The snaplocks lock the support legs again automatically as soon as
they have reached their end position.

BP07_062_1201EN 5ĂĊĂ151

Operation

5.14.3 Remote control Danger of crushing
There is a risk of crushing in the swingĆout and extension zone for
the supports.
You should therefore secure the danger zone. Keep the danger zone
under constant observation.
You must cease working immediately and press the EMERGĆ
ENCY STOP button if unauthorized persons enter the danger zone.

2

1

10504701

Preselection switch

" Switch the toggle switch on the remote control to Supports
On".

5ĂĊĂ152 BP07_062_1201EN

Operation

Caution
The truck must also only reach a maximum tilt position of 3_ when
the support feet are being retracted.

" Retract the rear support feet first, then the forward support feet.
" Now swing the support legs in or retract them.
" Switch the toggle switch on the remote control to the Supports

Off" position.
" Secure all the snaplocks with spring pins.
" Remove the remote control and lock it away in the driver’s cab.
" Disengage the power take−off.
" Secure the end hose and the accessories against falling from

the truck.

BP07_062_1201EN 5ĂĊĂ153

Operation

5.14.4 Disengaging the The machine is not ready to drive until the transfer gearbox has been
transfer gearbox disengaged and driving mode selected.
power take–off
The following information describes how a manual gearbox is
operated. In the case of an automatic gearbox, also check the
data provided by the vehicle manufacturer.

Caution
When engaging and disengaging the transfer gearbox, the vehicle
gearbox must be in the neutral position. The Cardan shaft must not
turn.

5ĂĊĂ154 3a

1 23
3b

BP07_594_0809EN 1

No. 0 Designation
1 Green indicator lamp
2 Red warning lamp
3 Locally latched toggle switch

3a Pumping operations" switch position
3b Driving" switch position
Note
To use a locally latched toggle switch, you must first pull it out and
then push it towards the symbol.

BP07_594_0809EN

Operation

" Operate the clutch pedal.
" Shift the vehicle gearbox to the neutral position.
" Switch the locally latched toggle switchĂin the driver’s cab from

pumping operations to driving.
å The green indicator lamp in the dashboard goes out and
the machine is then ready to drive.

Note
If the green indicator lamp is still lit and the red warning lamp lights
up in the dashboard, the parking brake is not applied.
You must then apply the parking brake and repeat the gear shift.

" Select the desired gear for driving, slowly release the clutch
pedal and release the parking brake.
å The green indicator lamp and the red warning lamp in the
dashboard go out.

Note
If the green indicator lamp and the red warning lamp in the dashĆ
board are still lit at this point, it is because the gear shift lasts several
seconds. Normally, both lamps go out after this time and the machine
is then ready to drive.

However, if the green indicator lamp and the red warning lamp stay
lit then there is a fault with shifting. Shifting faults may arise due to
synchronisation problems in the transfer gearbox.

BP07_594_0809EN 5ĂĊĂ155

Operation

Rectifying shifting If there is a shifting fault in the transfer gearbox, rectify the fault as
faults in the transfer follows:
gearbox
Danger
The machine is not ready to drive until the fault has been rectified.
If you continue driving after engaging driving operation despite the
fault, this will lead to damage to the transfer gearbox and the truck.

" Run the engine.

" Apply the parking brake.

" Shift the vehicle gearbox to the neutral position and keep the
clutch pedal depressed.

" Switch the locally latched toggle switch from driving back to
pumping operations.

" Switch the locally latched toggle switch from pumping operĆ
ations back to driving.

" Select the desired gear for driving, slowly release the clutch
pedal and release the parking brake.
å The green indicator lamp and the red warning lamp in the
dashboard go out.

5ĂĊĂ156 BP07_594_0809EN