Lievers LHF Series User manual

OPERATION MANUAL
HIGH FREQUENCY POKER VIBRATOR TYPES
LHF & HS
LIEVERS HOLLAND
Groot Mijdrechtstraat 68 –3641 RW
Postbus 103 - 3640 AC
Mijdrecht (NL)
Tel.: 0031 –(0)297-231900 / Fax: 0031 –(0)297-231909
E-mail: [e-mail] / Internet: www.lieversholland.nl

2/20 Operation manual LHF / HS, revision 6: 22-12-2015
CONTENT
1. PREFACE ................................................................................................................................................................ 3
2. SAFETY................................................................................................................................................................... 4
2.1. SAFETY ASPECTS ..........................................................................................................................................................4
2.2. SAFETY PRECAUTIONS ...................................................................................................................................................4
2.3. RESTRISK....................................................................................................................................................................5
3. TECHNICAL SPECIFICATIONS .................................................................................................................................. 6
4.USE ......................................................................................................................................................................... 7
4.1. INTENDED USE ............................................................................................................................................................7
4.2. APPLICATION ..............................................................................................................................................................7
5. MAINTENANCE .................................................................................................................................................... 10
5.1. MAINTENANCE..........................................................................................................................................................10
5.2. CLEANING AND SERVICING OF THE POKER VIBRATOR..........................................................................................................10
5.3. CHANGING THE TIP OF THE POKERHEAD..........................................................................................................................10
6. TROUBLESHOOTING AND REPAIRS ...................................................................................................................... 11
7. DISMANTLING, DISPOSAL .................................................................................................................................... 12
8. PARTLISTS............................................................................................................................................................ 14
9. DECLARATION OF CONFORMITY .......................................................................................................................... 20
© Bouwmachinefabriek Lievers B.V. NL 1994.
All rights are reserved. Reprints, copies, adaptations for new editions and publications in any form or through any
media, including abstract forms are not permitted unless written permissions is first obtained from
Bouwmachinefabriek Lievers B.V.
Bouwmachinefabriek Lievers B.V. may not be held responsible for any guarantees or liabilities for the contents of this
publication and points to, in this case, all implied securities for suitability of merchantability or any other purposes.
Bouwmachinefabriek Lievers B.V. further retains the right to revise this publication and to alter the contents over
certain periods of time, without the obligation to report such alterations and changes first.

3/20 Operation manual LHF / HS, revision 6: 22-12-2015
1.Preface
This manual has been written to help you operate and maintain the high frequency poker vibrator LHF & HS
safely. This manual is intended for dealers and operators of these types of poker vibrators and contains useful
instructions for use, maintenance and repair. These instructions need to be respected and followed.
Guarantee provisions
All damage to parts of the poker vibrator, occurring within 12 months after date of purchase as a consequence of
material , production or construction defects, will be replaced by Lievers as soon as possible.
Lievers declines all responsibility for unsafe situations, accidents and damage caused by:
Ignoring safety and using instructions as described on the machine or the instruction manual.
Incompetent or incorrect maintenance (f.i. irregular cleaning of the ventilation slots and cleaning with a high
pressure cleaner or by a water jet under high pressure)
Connecting the poker vibrator to the wrong voltage.
Storing the machine in a damp place.
Assembling or dismantling of the poker vibrator by unqualified personnel (employees who are unfamiliar with the
content of this instruction manual)
Other use than the prescribed use.
Alternations of the machine carried out by other than manufacturer. This also includes assembling of non-original
parts.
Guarantee certificate
Poker vibrator type LHF - HS nr. _______________________________
Date of purchase: ___________________________________
Mr. C.M. de Wit
Figure 1: example rating plate LHF
LHF : the rating plate can be found on the switch cover
HS : the rating plate can be found on the handgrip

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2. Safety
Explanation of the used safety symbols
Fig. 2: safety symbols
ENSURE,THAT ALL SYMBOLS ON THE MACHINE,CAN ALWAYS BE CLEARLY READ.
2.1 Safety aspects
The following safety aspects apply to the machine:
Safety symbols are present on the poker vibrators LHF & HS
2.2 Safety precautions
Before operating these machines, make sure to have read this manual carefully. If you have any questions , do not
hesitate to contact the supplier.
Ensure that you are qualified (familiar with the contents of this manual), to operate and carry out light maintenance
work to the machine.
Regular maintenance of the machine improves safe operation.
On working areas, take notice and follow general and local safety regulations. Before starting your work, make sure
that you are informed about all safety regulations and instructions.
In case the value of acceleration > 2,5 ms2, then wearing anti vibration gloves is obligated.
When operating the poker-vibrator wear ear protection, safety glasses, a safety helmet, protective (anti-vibration)
gloves and protective clothing.
Wear safety shoes with extra protection (steel caps and anti-slip soles).
Be careful when lifting and carrying the poker vibrator. Do not bend forwards when picking up the apparatus, but
bend your knees.
Make sure that the working area is lightened well.
Do not pull the plug out of the wall socket or extension lead by its lead.
1) Read the instruction manual
2) Safety glasses, safety helmet and ear
protection compulsory.
3) Vibration reducing glove with GELFÔM
compulsory.
4) Safety shoes with extra protection
compulsory.
5) Before opening remove the plug.
6) Dangerous electric voltage
7) Be careful.

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Check the feeder cable’s outercasing and if in use extension lead’s outercasing before you connect the machine to
the electrical mains. The outercasing may not be damaged. Replace the cable if you cannot read the marks on the
outercasing anymore.
Do not use the machine in an explosion endangered area.
Check whether the voltage provided by the converter is correct.
Regularly check the connections of the supply-cable to the switch.
Ensure that the wall socket and possible connections between the extension leads are protected against dampness.
Switch off the machine, when the electrical power cuts off. This prevents the machine from starting suddenly when
the electrical power comes on again.
Check the machine’s cable-connections before you connect the machine to the electrical mains. The cables must be
properly connected.
After use, place the poker vibrator on a stable and dry surface .
When the poker vibrator is not being used for longer a period of time, then it must be stored in a dry and clean area.
When cleaning the poker vibrator, ensure that no water or cleaning detergent gets into the poker vibrator.
Disconnect the electrical supply to the poker vibrator, before you start to clean or maintain the poker vibrator .
2.3 Rest risk
The manufacturer aimed for the best balance in functionality, safety and operation possibilities of the LHF and HS.
Please take notice of the following rest: for prolonged working with LHF poker vibrators it is obligated to wear anti
vibration gloves.
Well instructed operators with a correct working attitude concerning safe operating are well capable of working safely
with both LHF and HS poker vibrators.

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3. Technical specifications
Table
1: technical specifications LHF / HS
** The weighted effective value of acceleration, determined according to ISO 5349
Use of anti-vibration gloves obligated with value > 2,5 m/s².
LHF/HS
36mm
Short
36mm
long
50mm
Short
50mm
long
57mm
Short
57mm
long
65mm
Voltage
Current consumption
Vibr/Min
Compaction diam.
Sound press
Level ISO 6081 at
operator’s place
LHF:
Value of acceleration
in m/s² *
Comfort exposure
(max.) per day
HS:
Value of acceleration
in m/s² *
42V/200Hz
4,5A
12.000
Ø35cm
70 dB(A)
2,5
8hr
32hr
< 2,5
42V/200Hz
4,5A
12.000
Ø45cm
72dB(A)
2,53
7,8hr
31,2hr
< 2,5
42V/200Hz
6,7A
12.000
Ø55cm
75dB(A)
2,60
7hr
28hr
< 2,5
42V/200Hz
9,5A
12.000
Ø65cm
77dB(A)
2,77
6,5hr
26,1hr
< 2,5
42V/200Hz
11,5A
12.000
Ø75cm
79dB(A)
5,25
2,0hr
7,0hr
< 2,5
42V/200Hz
13,5A
12.000
Ø85cm
82dB(A)
5,75
1,5hr
6,0hr
< 2,5
42V/200Hz
16A
12.000
Ø100cm
85dB(A)
4,7
2,3hr
9,1hr
< 2,5

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4. Use
4.1 Intended use
Poker-vibrators LHF and HS are machines with a vibrating, steel bottle, for compacting concrete.
4.2 Operation
CAREFUL:READ THE GENERAL-AND SPECIFIC SAFETY-INSTRUCTIONS BEFORE YOU SWITCH ON THE POKER VIBRATOR.
CAREFUL:FIRST SWITCH ON THE FREQUENCY-CONVERTER BEFORE YOU SWITCH ON THE POKER VIBRATOR.
Switching on the poker-vibrator, compacting the concrete and switching off the poker vibrator.
1) Ensure that the supplied voltage from the converter corresponds with the poker vibrator’s technical data.
2) Ensure that the poker vibrator’s diameter corresponds with the consistency of the concrete.
3) Check that the switch is in the OFF (0) position.
4) Put the plug of the supply-cable in the socket of the converter.
5) Place the poker-vibrator in the direct vicinity of where you are going to compact concrete.
6) Put the switch in the ON (I) position.
7) Stick the vibrating pokerhead into the concrete and allow the vibrator to vibrate for 2 seconds in one place in
the concrete, before moving it to the next spot. Repeat this procedure every 50 cm (depending on the
concrete’s consistency).
Fig. 3: ON/OFF position of the poker vibrator
Careful: Switch off the poker vibrator when the pokerhead is out off the concrete. The built-in electric drive unit needs
to be cooled in the concrete and if this is not done the pokerhead can be severely damaged.
Therefore: Out of the concrete, poker vibrator OUT

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Fig. 4: Operation procedure during concrete compaction
When work is done
Put the switch in the OFF position and pull the supply-cable’s plug out of the socket.
Switch off the converter and pull the plug out of the wall socket.
After use, place the converter and poker vibrator on a dry and stable surface.
Clean the poker-vibrator and converter as prescribed in chapter 5 “maintenance”.
Application examples
The distance between two vibration places and the vibration time in one place, depend on the thickness of
the concrete layer and the composition of the concrete.
The following points are for guidance.
Floors:
1) Stick the poker vibrator slowly into the concrete (vibration time approx. 3 to 4 seconds).
2) Pull the poker vibrator slowly out of the concrete and repeat procedure 1each 50cms.
Walls and columns:
3) Pour concrete to approx. 100 cm.
4) Lower the poker-vibrator into the formwork.
5) Pull the poker vibrator slowly out of the concrete and move it to the next spot.
6) Now ready for the following pour of approx. 100 cm. of concrete.

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Fig.5: Overview of the most important components LHF
1. Plug CEE 42V 200 Hz
2. Supply cable 10M
3. Switch
4. Operating hose
5. Inner cable
6. Pokerhead 42V 200Hz
7. Steel tip
8. Rubber tip
Figure 6: Overview of the most important components HS
1. Supply cable 20 M
2. Pistol handgrip with switch
3. Vibration damper
4. Operating hose
5. Poker head 42V 200 Hz
6. Steel tip

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5. Maintenance
5.1. Maintenance
Although the poker vibrators type LHF & HS have a few moving parts, regular maintenance promotes a long and
trouble-free life.
WARNING :DO NOT CLEAN THE POKER VIBRATOR WITH A HIGH PRESSURE CLEANER.DISCONNECT THE ELECTRICAL
SUPPLY TO THE POKER VIBRATOR BEFORE YOU CARRY OUT ANY MAINTENANCE ACTIVITIES TO THE POKER-VIBRATOR.
5.2. Cleaning and servicing of the poker-vibrator
During concrete compaction the poker vibrator, switch and supply cable will become dirty.
Periodical maintenance is vital to the safe and efficient operation of the poker vibrator. It is therefore highly
recommended to clean the poker vibrator daily with water.
When storing the poker vibrator make sure that the operation hose has been coiled properly, thus
preventing cuts and cracks to the rubber hose.
If the poker-vibrator is to be stored for a long period of time, it should be put on an appropriate stand and left to hang.
TIP:LN CASE OF FAILURE OR BREAK DOWN OF THE POKER VIBRATOR,WE ADVISE YOU TO SEND THE MACHINE TO AN AUTHORISED SERVICE-
STATION OF LIEVERS.
WARNING:WE STRONGLY ADVISE YOU NOT TO CARRY OUT REPAIRS TO THE POKER-VIBRATOR BY YOURSELF,WITHOUT BEING INSTRUCTED
BY THE MANUFACTURER OR DEALER (READ GUARANTEE-PROVISIONS).
5.3. Changing the tip of the pokerhead
This paragraph exclusively deals with the replacement of the steel- and rubber tip of the pokerhead.
1) Lock the rear part of the pokerhead in a vice.
2) File away the welding point where the rear part joints the front part .Loosen the screw thread by tapping on
the tip of the pokerhead with a hammer.
3) Unscrew the tip by means of a hook spanner (available from the producer).
4) By locking the pokerhead in the vice vertically, you prevent the lubricating oil from running out of the
pokerhead.
5) Before the new tip is installed, the screw thread of the tip needs to be winded with at least 8 windings of
Teflon tape.
6) Now tighten the tip by means of the hook spanner and secure it by providing the tip with a welding point of
approx. 5 mm. diameter.
CAREFUL:REFILL OIL IF DURING THE ABOVE DESCRIBED PROCEDURE OIL HAS RUN OUT OF THE POKERHEAD.IF THIS SPECIAL OIL IS NOT
AVAILABLE,PLEASE CONTACT YOUR DEALER OR LIEVERS (Ø36MM-15 CC/Ø50MM-20CC/Ø57-25CC/Ø65MM-30CC).