Lauda VS 20 OH User manual

Operating Instructions
Varioshake Overhead Shaker
VS 20 OH

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Before installation, please check whether contents of package are in good order and complete. Should you note any damages
or have any reasons for complaint, please contact your supplier or directly:
LAUDA DR. R. WOBSER GMBH & CO. KG
Schulze-Delitzsch-Str. 4+5
30938 Burgwedel - Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Internet: https://www.lauda.de
Translation of the original operating instructions
Q4DT-E_13-012-EN-01, 04.07.2023
© 2023 LAUDA DR. R. WOBSER GMBH & CO. KG

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Contents
Operating Instructions .....................................................................................................................................................................1
1Use of the Overhead Shaker...................................................................................................................................................7
Intended Use....................................................................................................................................................................7
Improper Use ...................................................................................................................................................................7
2Warranty conditions.................................................................................................................................................................7
3Before Initiation .......................................................................................................................................................................7
4Transport, set-up and location of the overhead shaker ........................................................................................................8
5Voltage ......................................................................................................................................................................................8
6Initiation....................................................................................................................................................................................8
Loading the rotating rack: ...............................................................................................................................................8
Clamping the vessels .......................................................................................................................................................9
Operation .........................................................................................................................................................................9
7Functional description ..........................................................................................................................................................10
8Servicing, maintenance and clearing possible defects .......................................................................................................10
Exchanging the fuses....................................................................................................................................................10
Breakdown in case of overload and mains failure.......................................................................................................11
Technical support..........................................................................................................................................................11
9Disposal of old units ..............................................................................................................................................................11
10 Technical Data .......................................................................................................................................................................12
11 Circuit diagram......................................................................................................................................................................13
12 Connection to the mains ......................................................................................................................................................14
Electrical fuses ..............................................................................................................................................................14
13 Notes ......................................................................................................................................................................................15
14 Ordering spare parts / LAUDA Service..............................................................................................................................16
15 Product Returns and Clearance Declaration .....................................................................................................................17
16 EC Declaration of Conformity ............................................................................................................................................19

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1Use of the Overhead Shaker
Intended Use
The information in these operating instructions must by all means be carefully read and observed. Only then a perfect func-
tioning of the Shaking Apparatus can be guaranteed. The units may only be installed and operated by persons who have made
themselves familiar with these operating instructions. The frequency of the shaking motion can be set and is electronically
regulated. Laboratory vessels that are to be used on the Shaking Apparatus must be fixed safe-to-operate.
Caution:
due to increased risk of injury never reach into the unit as long as it is still in motion.
Improper Use
LAUDA Varioshake Shaking Apparatus are no Medical Devices. They fall neither under national nor international Medical
Device Directives and have to be used and applied accordingly. The Shaking Apparatus may not be used in potentially ex-
plosive atmospheres and must neither be set up nor operated in laboratory areas with aggressive or corrosive ambient. By
all means make sure to prevent the shaking procedure creating an explosive atmosphere during operation of the Shaking
Apparatus.
2Warranty conditions
LAUDA offers a standard 12 month manufacturer's warranty from the date of purchase.
3Before Initiation
The information in these operating instructions must by all means be carefully read and observed. Only then a perfect
functioning of the Shaking Apparatus can be guaranteed. A free of charge guarantee repair cannot be granted for defects
due to improper installation or handling.
Safety precautions are marked with the following symbols.
Read and observe the
operating instructions
Hand injury warning
Warning of dangerous
electrical voltage
General
hazard warning
Before maintenance and repair
disconnect the unit all-pole from
the electrical mains (pull the plug
from the socket).

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4Transport, set-up and location of the overhead shaker
Protect yourself and the unit during transport and setup by working carefully and avoid danger of e. g. shifting or tilting the
unit. Place on solid, even and level surfaces inside buildings only. The location must provide sufficient space as well as the
necessary carrying capacity for the unit (unit weight see Technical Data, plus weight of the accessories and load). The Shak-
ing Apparatus is not suitable for use in potentially explosive atmospheres, e. g. during anaesthesia with inflammable gas or
steam types.
5Voltage
The overhead shaker must be connected to a properly installed safety socket. The machine is an electrical device of protec-
tion class I. A connection to the protective conductor (PE) must be ensured. For the value of the required mains fuse, please
refer to the technical data, Section 10 of these instructions. See section 12 of this guide for more information on connec-
ting to the mains power supply. The electrical connection must be made in such a way that the overhead shaker can be
completely disconnected from the mains at any time.
The rotary knob of the overhead shaker must be turned fully counterclockwise to the "0 revolutions" position. The operating
voltage on the rating plate (on the back of the device) must be identical to the mains voltage. If they match, make the
electrical connection.
6Initiation
Caution:
due to increased risk of injury never reach into the unit as long as it is still in motion.
Caution:
by all means make sure to prevent the shaking procedure creating an explosive atmosphere during opera-
tion of the Shaking Apparatus.
Loading the rotating rack:
The overhead shaker is delivered with a locked rotating rack.
(The locking bolt grips the hole in the rack). Lift the locking
lever and slide it to the left. The rotating rack can now be ro-
tated forwards or backwards by hand.
To equip the individual levels, lift the locking lever and slide it
to the right so that the locking bolt engages in the hole on the
rack (image A). The rack is now locked and can be loaded.
Attention:
Please equip the four levels evenly under all circumstances!

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Clamping the vessels
Attention:
Only vessels of the same size may be clamped
on all four levels. The weight of the vessels
must be the same.
Place vessels in the holders:
Loosen the two outer wing screws of the height adjustment,
press down on the vessel closure and tighten again (image B).
Small differences in height (up to 30 mm) can be compensated
with the three middle wing screws.
Operation
Attention:
The locking lever must be in the left position
(picture C).
Turn the spin speed dial fully left counterclockwise
(position „0“).
Operate the main switch (picture D).
Green signal lamp in the main switch lights up.

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The desired speed is to be set with the speed setting button
(Figure E).
The current speed in rpm (revolutions per minute) is shown on
the digital display.
Attention:
If the rotating rack is already in operation,
the locking lever must not be actuated.
7Functional description
Analogue control:
The desired speed is set using a rotary control. The actual speed is shown in the digital display.
The device is driven by a geared DC motor. To protect against overloading, a slipping clutch is integrated
between the motor and rotating rack. In the event of uneven loading or a blockage in the rack, the drive is
automatically disengaged and restarts automatically after the blockage has been cleared.
8Servicing, maintenance and clearing possible defects
Make sure that no liquids can get into cable connections or inside the electrical device. Before all cleaning
and repair work, the mains plug must be pulled out and the overhead shaker must be disconnected from
the mains at all poles. Repairs to the electrical system may only be carried out by a qualified electrician.
Exchanging the fuses
The two fuses for the shaker are located in a drawer below the device plug. To check and replace
these fuses, the drawer can be pulled out after actuating the retaining levers on both sides. The
fuses may only be replaced with fuses of the same construction. Information about the type of
fuse used can be found on the nameplate next to the device socket and in the circuit diagram.

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Breakdown in case of overload and mains failure
If the overhead shaker overheats due to excessive loads, the device switches off. Caution, after the drive has cooled down
or after interruptions in operation due to a power failure, the device starts up again automatically. If the device is switched
off as a result of a malfunction, the overhead shaker must always be switched off before the device is touched.
LAUDA Varioshake overhead shakers are made from the best materials and designed to withstand tough treatment. Ne-
vertheless, the device may only be exposed to increased loads within reasonable limits. If necessary, the powder-coated
surfaces can be cleaned with mild cleaning agents.
Technical support
You can call our customer service at any time for technical support relating to LAUDA Overhead Shaker.
Phone : [phone]
Fax : [phone]
Email : [email protected]
Maintenance, repairs and modifications must be carried out by a qualified electrician (section 2 (3) DGUV Regulation 3).
Only original spare parts may be used. Request that the person performing the work provides written confirmation of the
type and scope of the work carried out (company, date, signature).
9Disposal of old units
Within the framework of the legal guidelines, LAUDA assumes responsibility for the environmentally friendly return and
disposal of all old devices that we have been supplied free of charge from our production from the year of manufacture
1995 and recycles them. Before delivery, a legally binding declaration must be made that the device is free from contami-
nation that is harmful to health and from hazardous substances caused by use.
LAUDA laboratory devices are intended exclusively for commercial use and may not be disposed of via public waste dis-
posal agencies.

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10 Technical Data
VS 20 OH
Exterior dimensions (W x D x H)
700 mm x 700 mm x 680 mm
Speed range
1 to 20 rpm
Speed control
Electronic, stepless
Speed display
digital
Capacity
Maximum vessel diameter
Maximum vessel height
12 vessels
110 mm (round or square)
270 mm
Clamping range
0 to 270 mm
Drive
Geared DC motor
Electrical connection
230 V, +/-10 %, 50 / 60 Hz
Power consumption
500 mA
Environmental conditions
Indoor use only and in incubation rooms
(not in potentially explosive areas)
Ambient temperature
+ 10 °C to + 50 °C
Humidity
maximum 70% relative humidity up to 31 °C,
decreasing up to 50% relative humidity
at 50 °C, non-condensing.
Weight, net
62 kgs

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11 Circuit diagram
A1 Radio interference suppression unit
A2 Speed display
A3 DC motor controller
A4 Forked light barrier
D1 Choke 9 µH, 6 A
D2 Choke 9 µH, 6 A
D3 Choke 2.5H 0.2A
F1 Fuse 500mAT
F2 Fuse 500mAT
M1 DC motor
R 1 Potentiometer 1MΩ
R2 Potentiometer adjustment display
R3 Potentiometer speed adjustment
S1 Main switch

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12 Connection to the mains
LAUDA Varioshake overhead shakers are supplied with a pre-assembled main plug.
The connection to the protective conductor connection must be ensured.
Color code of the power cord
Power supply
ge/gr –yellog/green
PE (protective conductor)
bl –blue
N
sw –black
L1
Electrical fuses
Type
Power
Power consumption at mains voltage *
Mains fuse (F4, F5)
VS 20 OH
0.065 kW
0.3 A at 230 V
10 A
(max. 16 A)
* see nameplate

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13 Notes

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14 Ordering spare parts / LAUDA Service
When ordering spare parts, please state the serial number (type plate) to avoid queries and wrong deliveries.
Your partner for maintenance and competent service support:
LAUDA Service
Phone: [phone]
Fax: [phone]
Email: [email protected]
We are always at your disposal for questions and suggestions!
LAUDA DR. R. WOBSER GMBH & CO. KG
Laudaplatz 1
97922 Lauda-Königshofen
Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Internet : http://www.lauda.de/

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15 Product Returns and Clearance Declaration

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16 EC Declaration of Conformity

LAUDA DR. R. WOBSER GMBH & CO. KG
Schulze-Delitzsch-Straße 4+5 ◦30938 Burgwedel ◦Germany
Phone.: [phone] ◦Fax [phone]
Email: [e-mail] ◦Internet: https://www.lauda.de