Phoenix Mecano DewertOkin DC20 User manual

DC20 Lifting Column
Installation Instructions
(Translation of the original installation instructions)

Foreword
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Foreword
Document revision history
Version Date Modification, change
1.0 12/2019 First release
Disclaimer and exclusion of liability
DewertOkin is not responsible for damage resulting from:
 failure to observe these instructions,
 changes made to this product which have not been approved by DewertOkin, or
 the use of replacement parts which have not been approved or manufactured by DewertOkin.
.
Manufacturer's address
DewertOkin GmbH
Weststrasse 1
32278 Kirchlengern, Germany
Germany
Tel: [phone]
Fax.: [phone]
http://www.dewertokin.de
[e-mail]
Creation of a complete operating instruction manual for the entire end product
These instructions are only intended to be used by the end-product manufacturer. They should not
be given to the operator of the end product. The factual information contained within may be used
as a basis when creating the end-product manual.
The warning and danger notices are best suited for use in the end product's manual. However, it is
not sufficient to simply follow these notices. You should also carry out an internal risk assessment
for your end product. This can then be used as the basis for the safety notices in your manual.
These installation instructions do not contain all information required to safely operate the end
product. They only describe the installation and operation of the lifting column as partially com-
pleted machinery.
The instructions are intended for the technicians responsible for manufacturing an end product and
not for the operators of the end product.

Foreword DC20 Lifting Column
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DC20 Lifting Column Table of Contents
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Table of Contents
Foreword 3
Document revision history 3
Disclaimer and exclusion of liability 3
Manufacturer's address 3
Creation of a complete operating instruction manual for the entire end product 3
Table of Contents 5
1. General Information 7
1.1 About these installation instructions 7
1.2 Availability of this document 7
1.3 Conventions used 8
2. Safety notices 9
2.1 Proper and intended usage 9
2.2 Safety notices within the installation instruction and the operating instructions
for the entire machine 10
2.3 Selection and qualification of personnel 10
2.4 Notice on safety during operations 11
2.5 Product identification 12
3. Possible combinations 13
4. Description 14
4.1 Components 14
5. Technical specifications 16
6. Installation 18
6.1 Safety notices to observe during installation 18
6.2 Installation procedure 19
7. Operating notes 23
7.1 General information 23
8. Troubleshooting 25
9. Maintenance 26
9.1 Maintenance 26
9.2 Cleaning and care 27

Table of Contents DC20 Lifting Column
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10. Disposal 28
10.1 Packaging material 28
10.2 Components of the lifting column 28
Declaration of incorporation/installation 29
EU Declaration of Conformity 30
Additional information 31

DC20 Lifting Column General Information
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1. General Information
1.1 About these installation instructions
These installation instructions must be followed closely in order to install the DC20 lifting column
successfully and safely in the end product. These instructions are not an operating manual for the
end product.
These instructions will help you to minimize danger, repair costs and down times. They will also
help you to maximize the reliability and lifespan of the end product.
CAUTION
The notices in these instructions must be followed! Following the guidelines during in-
stallation and connection procedures will help to minimize:
 the risk of accident and injury, and
 damage to the drive system or the end product.
These installation instructions have been written with due care and attention. However, we cannot
guarantee that the data, images and drawings are complete and correct nor do we accept any lia-
bility for the information contained therein, unless required by law.
 We reserve the right to make unannounced technical changes in the course of our continual
product improvement process!
1.2 Availability of this document
As manufacturer of the end product, you are obligated to comply with Machinery Directive
2006/42/EC. This directive stipulates that the installation instructions must be kept on file for gov-
ernmental inspection purposes.

General Information DC20 Lifting Column
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1.3 Conventions used
Notices which do not relate to safety are indicated in these instructions with a triangle:
 Triangular notice symbol
Safety notice explanations
WARNING
WARNING indicates a hazardous situation which, if not avoided, could result in death
or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
NOTICE
NOTICE is used to address practices which are not related to personal injury but may
result in damage to the product or surroundings.

DC20 Lifting Column Safety notices
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2. Safety notices
2.1 Proper and intended usage
The DC20 lifting column is designed to be installed in end products:
 It provides motor adjustment capabilities for movable furniture. It should be used in conjunction
with suitable fittings and mechanics.
 It can be used for care purposes (CARE): Nursing beds
 It can be used in a hospital (HOSP): Hospital beds
 It can be used in treatment chairs, couches, etc.
CAUTION
The DC20 lifting column should only be used for the applications described above. Any
other use is forbidden. Improper usage can lead to accidents or destruction of the unit.
Such non-approved applications will lead immediately to the expiration of all guarantee
and warranty claims on the part of the end-product manufacturer against the manufac-
turer.
Improper usage
Be sure to follow the notices below concerning improper usage. You should include them in your
product manual in order to inform the users of your end product.
WARNING
The DC20 lifting column must not be used:
 in any environment where combustible or explosive gases or vapours (e.g., anaes-
thesiology) may be present,
 with pulling or pushing forces that exceed those specified on the ratings plate,
 in a moist environment,
 outdoors,
 in any application that will be cleaned with an automated washing system.
CAUTION
The DC20 lifting column may not be operated:
 by small children,
 by frail or infirm persons without supervision, or
 in the proximity of small children.

Safety notices DC20 Lifting Column
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The DC20 lifting column can be used by children of 8 years and older, persons with reduced physi-
cal, sensory or mental capabilities, or persons with lack of experience or knowledge when they are
supervised or instructed concerning the safe use of the device and when they understand the re-
sulting risks. Do not allow children to play with this device. The cleaning and user maintenance
must not be carried out by children without supervision.
 You should only use spare parts which have been manufactured or approved by DewertOkin.
Only these parts will guarantee a sufficient level of safety.
2.2 Safety notices within the installation instruction and the operating instruc-
tions for the entire machine
The manufacturer of the complete machine (the end product) is only permitted to operate the DC20
lifting column (by itself an incomplete machine)
 when the end product (for which the DC20 lifting column is intended) is in compliance with all
protective measures specified in the Machinery Directive 2006/42/EC, and
 when the manufacturer expressly declares the compliance of the end product.
The manufacturer of the end product must create a manual for the users of that product. The safety
notices in the end-product manual must be written based on the end product's risk assessment.
2.3 Selection and qualification of personnel
This DC20 lifting column should only be installed into the end product by someone who has com-
pleted training in electronic motor assembly or has equivalent qualifications.
You should only install this lifting column when you are qualified to do so. Otherwise, a properly
qualified person should be found for this task.

DC20 Lifting Column Safety notices
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2.4 Notice on safety during operations
Basic safety rules must be followed in order to ensure that the end product can be continually oper-
ated in a safe manner. These rules must be observed while using the end product and while in-
stalling the drive.
These rules and safety measures can be categorized as follows:
 Construction measures before the installation (refer to the "Ensuring operational reliability dur-
ing installation" section in Chapter "Installation").
 Safety fundamentals during the drive installation and during cable and wire routing (refer to the
"Safety notices to observe during installation" section in the "Installation" Chapter).
 Using the drive in intermittent duty (refer to the "General information" section in the "Operating
notes" chapter).
 Basic safety rules during operation (refer to the "Operating notes" Chapter).
 The creation of a manual for the end product which contains these and other safety rules.
Creating a user's manual
The manufacturer of the end product must create a manual for the users of that product. The safety
notices in the end-product manual must be written based on the end product's risk assessment.

Safety notices DC20 Lifting Column
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2.5 Product identification
2.5.1 Ratings plate
A ratings plate (type label) on each DC20 lifting column specifies the exact name and serial num-
ber of the lifting column. It also states the technical specifications valid for that particular lifting col-
umn. The following illustration shows where the specifications are located on the DC20 lifting
column's ratings plate.
 The ratings plate shown is an example; the specifications for your DC20 lifting column may dif-
fer from this illustration.
Figure 2 Ratings plate example
DC20 Model name
xxxxx Article number
24 – 29V Input voltage
Max. 6.0A Current consumption
Duty cycle: 2 min ON / 18 min OFF Intermittent operations: 2 minutes / 18 minutes
max. Push Force Push force
Prod.date Calendar week / year
Serial No. Serial number for your drive
IP20 Protection degree
Use in dry rooms only!
Read the manual!
Follow all special disposal instructions!
Mark of CE conformity

DC20 Lifting Column Possible combinations
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3. Possible combinations
The DC20 lifting column can be combined with other single/double drives or controllers. The follow-
ing basic combinations are possible:
 a DC20 lifting column with a hand set and control unit,
 a DC20 lifting column in combination with other drives with an additional control unit or double
drive.
Systems can be customized by combining the DC20 lifting column with the handset and control
units as needed. Make sure that you switch off the electricity before connecting any components
(connect while in a voltage-free state).
DewertOkin has separate system instruction manuals containing all information and instructions
needed for these systems.
 Only a DewertOkin device should be used to control the DC20 lifting column since they have
already been verified to work together.
 A control unit or a double drive is needed to operate the DC20 lifting column. A handset is also
required.
NOTICE
Check with DewertOkin for approval concerning any special device configurations that
are customized for your requirements.

Description DC20 Lifting Column
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4. Description
The DC20 lifting column is an electrically driven motor that is responsible for moving the end prod-
uct in a linear direction. These adjustments are created by the in and out movement of a lifting col-
umn. The movements of the DC20 lifting column are controlled using a control unit or a double
drive which is connected to a DewertOkin handset.
The different drive models vary according to their:
 electrical connection.
 dimensions and stroke,
 We reserve the right to make unannounced technical changes in the course of our continual
product improvement process!
4.1 Components
The main components of the DC20 lifting column are the electric motor and the telescopic column.
Mounting points are located at the outer end of the lifting column and at the opposite end of the
drive. They are used to mount the DC20 lifting column in the end product.
Figure 3 Main components of the DC20 lifting column
A Head of the DC20 lifting column B Connecting cables (8-pin plug or LSP plug)
C Inner telescopic column D Middle telescopic column
E Outer telescopic column F Foot of the DC20 lifting column
A
E
B
F
C
D

DC20 Lifting Column Description
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4.1.1 Connection options
The DC20 Lifting Column has different variants for the power connection:
 LS plug
 8-pin plug
Figure 4 Variants of connectors and cables
A LS plug B 8-pin plug
B A

Technical specifications DC20 Lifting Column
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5. Technical specifications
Rated voltage 24 V DC – 29 V DC
Current consumption at rated load Max. 6 A, depending on version
(refer to the ratings plate)
Permitted push force Max. 2000 N depending on version
(refer to the ratings plate)
Mode of operation1 at max. rated load Intermittent duty: 2 min/18 min
(max 5 switching cycles per minute)
Protection class2) III
Noise level ≤ 50 dB(A)
Drive type Single drive
Load type Pressure
Stroke Max. 750 mm
Adjustment speed3 Max. 22 mm/s
Protection degree IPX4, max. IPX6
Dimensions and weight
Length x width x height Min. 320.5 mm x 169 mm x 135 mm
Weight Approx. 10 kg, depending on version
Ambient conditions for operation, storage and transport
Transport / storage temperature From -20 °C to +50 °C
From -4 °F to +122 °F
Operating temperature From +10 °C to +40 °C
From +50 °F to +104 °F
Relative humidity From 30% to 75%
Air pressure From 800 hPa to 1060 hPa
Height < 2000 m
1) Mode of operation: intermittent duty 2 min./18 min. This means that after the unit is operated with its rated
load for up to two minutes it must then be paused for 18 minutes. The system can malfunction if this pause
is not observed!
2) Safety extra-low voltage
3) Adjustment speed: the speed at which the clevis can move under no load (the speed varies depending on
the load).

DC20 Lifting Column Technical specifications
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Figure 5 Dimensions of DC20 lifting column drive (in mm),
minimum installation dimensions: 320.5 mm
169
335.5
129
320.5
169

Installation DC20 Lifting Column
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6. Installation
6.1 Safety notices to observe during installation
Basic safety rules must be followed in order to ensure that the end product can be continually oper-
ated in a safe manner. These rules must be observed while using the end product and while in-
stalling the DC20 lifting columns.
6.1.1 Ensuring operational reliability during installation
The safety and reliability of the end product containing the DewertOkin drive can be ensured by
using the proper construction methods described below.
Avoiding fatigue fractures
CAUTION
DC20 lifting columns that are incorrectly installed can undergo fatigue fractures which
then create a risk of injury.
 Install the DC20 lifting column in the end product so that it is properly aligned. This
will help prevent shear stress.
 Do not position the DC20 lifting column at a slanted angle when installing it in the
end product. A slanted angle between the intended direction of movement of the
end product and the DC20 lifting column's direction will create shear stress and
could lead to a fatigue fracture.
 Be sure to install the DC20 lifting column so that it can always move freely in all op-
erative states.
Avoiding a pinching hazard
CAUTION
The drive movement is executed by the telescopic column. When designing your prod-
uct, you should take this into account with passive safety mechanisms and with the ap-
propriate safety notices in your operating instructions:
 Installation methods for ensuring passive safety: Install the DC20 lifting column so
that none of the positions where shear and pinch hazards exist are accessible ex-
ternally.
When preparing safety notices for the operator, Make sure that your operating instructions inform
the user of these safety points.

DC20 Lifting Column Installation
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Avoiding an overrun of the stop point with the end product
Your end product should contain mechanical end stops. These will limit the drive movement and
significantly increase operational safety. DewertOkin recommends that you build such mechanical
end stops into your end product.
The DC20 lifting column has a safety switch.
 The safety end switch shuts the DC20 lifting column down as soon as the normal end switch is
passed over. The safety end switch is integrated directly into the DC20 lifting column and does
not require any additional installation.
 The mechanical end stops or stroke limiters in the end product must be adjusted to fit the re-
tracted and extended dimensions of the DC20 lifting column. Make sure that the DC20 lifting
column does not reach the mechanical end stop position before it has been fully extended.
6.2 Installation procedure
NOTICE
Mount the DC20 lifting column in its unloaded position within your end product.
The DC20 lifting column must either be completely retracted or extended at its end position.
Damage to the DC20 lifting column can only be avoided if it is installed in its unloaded position.
This ensures safe installation.
6.2.1 Installation
Before installing the lifting column, make sure that you are observing all of the safety notices found
in the "Safety notices to observe during installation" section.
CAUTION
The plug for the connecting cable should be unplugged during the installation.
Recommendations
 The mounting plate of the end product should completely cover the cover plate of the DC20 lift-
ing column. Thus, make sure that the mounting plate is properly dimensioned.
 The cable of the DC20 lifting column must be secured so that it cannot be pulled out.

Installation DC20 Lifting Column
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NOTICE
To avoid bending the DC20 lifting columns during operation, at least one DC20 lifting
column must be mounted in a mobile position whenever two DC20 lifting columns are
installed in the end product (refer to Figure 7 and Figure 6)!
Explanation: When there are small speed differences between the two DC20 lifting col-
umns, a relative movement of one DC20 lifting column to the other could result in shear
stresses.
Figure 6 Movable mount – install like this: Avoidance of shear stresses due to articulated
mounting of the lifting columns on both sides (schematic sketch and not to scale)
Figure 7 Fixed mount – do not install like this: Occurrence of shear stresses due to non-
mobile (fixed) mounting of the lifting columns (schematic sketch and not to scale)