SKF Ecomag Installation and operating instructions

Ecomag
Linear Actuator
Read this manual before installing, operating
or maintaining this actuator. Failure to follow
safety precautions and instructions could
cause actuator failure and result in serious
injury, death or property damage.
Installation, operation
and maintenance manual

Technical Instructions
Ecomag
Linear drive
Content
1General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.1 Using the Technical Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.2 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.3 Correct usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.4 Ambient conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
3Installation and startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3.4 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
4.1 Controlling an actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
4.2 Locking device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
4.3 "Emergency lowering" in the event of a power failure (option) . . . . . . . . . . .7
4.4 Rapid adjustment (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
5Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.2 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.4 Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.5 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
5.6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Reference standards
EN 60601-1
EN 60601-1-2
EN 60601-2-38
EN 60335
UL 2601
Magnetic Elektromotoren AG
Oristalstrasse 97
CH-4410 Liestal
Phone [phone]
Fax [phone]
e-mail [email protected]
L5311,2400E.1/12.03

Technical Instructions Linear drive Ecomag
Magnetic – The Linear Drives Company™ page 2/10
1General
1.1 Using the Technical Instructions
The Technical Instructions are intended for designers or specialists who use the ECO-
MAG linear actuator in their products, and for fitters who work with the actuator. The
Technical Instructions contain all relevant information on this Magnetic product.
We reserve the right to make changes which are in the interest of technical progress.
Please read the Technical Instructions carefully and, above all, pay careful attention to
the Safety Instructions.
The Technical Instructions should be used for drawing up the User Manual for the end
product.
1.2 Explanation of symbols
The symbols opposite are used in the Technical Instructions to highlight possible dan-
gers and important notes.
1.3 Correct usage
The ECOMAG linear actuator has been designed for use in conjunction with the fol-
lowing Magnetic components:
SEM 1 control unit and
EHE handswitch
and is specifically intended for adjusting chairs and couches in medical and care sec-
tors.
Other uses must be discussed with Magnetic Liestal.
1.4 Ambient conditions
Operation:
Temperature 10 °C to 40 °C
Humidity max. 85%
Storage / transport:
Temperature -20 °C to 60 °C
Humidity max. 95%
The unit is only suitable for indoor use and must not be subjected to the elements.
2Function
ECOMAG linear actuators are DC actuators with worm gears and spindle units. The
gears convert the motor's rotational movement into a linear movement through the
threaded spindle's rotation being transferred to a pushing tube via a special nut.
The stroke is limited by built-in limit switches.
The power is supplied via an attachable or externally fitted SEM 1 control unit. The
control unit consists of a control box housing the transformer, the converter, up to 4
motor socket connections and a socket connection for the control device (e.g.
handswitch).
The linear actuator is operated using a control device (e.g. an EHE handswitch).
The feed speed is a function of the load!
The ECOMAG can be loaded with push forces (ECO 2/4/6/8) or pull and push forces
(ECO 3/5/7/9).
The maximum load on the actuator shown on the label refers to the centric push tube
axis.
A mechanical anti-pinching device for pull forces is fitted in the "push" versions. In
the "pull-push" versions, a mechanical anti-pinching device is available as an option.
The self locking of the actuator is at least equal to the push-/pullforce.
The maximum load specified on the label
must not be exceeded, since doing so will
mean that the prescribed level of safety will
not be provided.
The actuator may be destroyed if it is over-
loaded!
The ECOMAG linear actuator "push version"
(ECO 2/4/6/8) may only be subjected to com-
pressive loads. If pull forces are applied, the
push tube can disengage from the outer tube.
Risk of accident!
This symbol is used to indicate operations and
states which could endanger life and limb.
Follow the instructions precisely!
This symbol provides the user with useful
information.
This actuator must not be operated in
potentially explosive atmospheres.
L5311,2400E.1/12.03

Technical Instructions Linear drive Ecomag
Magnetic – The Linear Drives Company™ page 3/10
3 Installation and startup
3.1 Scope of delivery
The ECOMAG actuator system comprises the following:
Control unit
Actuator and
Control device
3.2 Installation
The linear actuator must only be installed over the two fork heads. The load must act
centrally on the push tube axis and, when the actuator is installed, it must be free
from any other mechanical forces.
If there is a risk of hitting a mechanical limit stop during a stroke movement,
Magnetic AG recommends that mechanical anti-pinching protection or a current cut-
off device be used.
When the rapid adjustment option is used, it must be ensured that the entire stroke
movement can be completed.
Mounting position
As a general rule, all mounting positions are possible, provided the following points
are noted:
If the control unit is plugged in, only the mounting positions shown in Fig. 1 from 0°
to 90° are permitted.
If an overhang arrangement is used, the control unit must also be fixed in position
with cable ties. The control unit can otherwise work itself loose.
Fig. 1 – Mounting positions
Mounting the control unit on the actuator (ECO 2/3/6/7 only)
Slide the control unit onto the actuator as shown in Fig. 2. The control unit locks
into position with an audible click of the locking mechanism.
Removing the control unit
Gently lift the nose with a screwdriver, and at the same time push the control
box in the direction of the arrow (see Fig. 3).
Fig. 2 – Mounting the control unit Fig. 3 – Removing the control unit
90°90°
270°270°
The bolts and brackets for transferring the
forces must be suitable for the purpose in-
tended and be matched to the dimensions of
the fastening fittings.
Risk of accident!
L5311,2400E.1/12.03

Technical Instructions Linear drive Ecomag
Magnetic – The Linear Drives Company™ page 4/10
Fastening the control unit externally
The control unit must be installed at
the installation slots provided (see Fig.
4), and must be installed so that it is
free from mechanical forces and vibra-
tions.
Tightening torque: 1.7 – 2 Nm
Fig. 4 – Fastening the control unit externally
Installing / uninstalling the earth cable (option)
Undo the nut (4) and contact washer (3) from the grounding bolt (1). (Fig. 5)
Push the cable lug for M4 (2) of the device you wish to earth over the grounding
bolt (1).
Fasten the grounding bolt (1) onto the hexagon using the wrench (5).
Screw the contact washer (3 and nut (4) onto the thread of the grounding bolt (1).
Tighten with the torque wrench to 1.5 Nm – 1.8 Nm.
The cable is uninstalled in the reverse order.
Fig. 5 – Installing / uninstalling the earth cable
3.4 Startup
Opening the control box cover
Gently lift the nose with a screwdriver,
and at the same time push the control
box cover in the direction of the arrow.
Fig. 6 – Steuerkastendeckel öffnen
1
2
3
4
5
All cables must be secured so that no forces
act on the control unit connections.
Incorrectly connected cables may become
loose and damage the control unit!
To ensure that the grounding bolt (1) does not
rotate too, it must be fixed in position using a
wrench (item 5) when the device's earth con-
nection is being tightened or unscrewed.
Risk of accident!
L5311,2400E.1/12.03

Technical Instructions Linear drive Ecomag
Magnetic – The Linear Drives Company™ page 5/10
Connecting / disconnecting the actuator cable on the control unit
Connect the actuator cable in the direction of the arrow (see Fig. 7).
Note: Observe the plug number.
Disconnect the actuator cable in the direction of the arrow (see Fig. 8).
Fig. 7 – Connecting the cable Fig. 8 – Disconnecting the cable
Connecting / disconnecting the control device
Connect the control device plug (e.g. handswitch) in the direction of the arrow
(Fig. 9).
Note: Observe the plug type.
Disconnect the plug in the direction of the arrow (see Fig. 10).
Fig. 9 – Connecting the cable Fig. 10 – Disconnecting the cable
Closing the control box cover
Move the control box cover in the direc-
tion of the arrow (see Fig. 11).
The control box cover is only closed once
an audible click of the locking mechanism
is heard.
Fig. 11 – Closing the control box cover
1
2
1
2
You should ensure that the handswitch cable
plug is inserted correctly.
If the front film is damaged (i.e. allowing liq-
uid to penetrate), the handswitch must be
replaced. The handswitch would be damaged
if liquid were allowed to penetrate it!
Motor connections that are not occupied on
the control unit are sealed at the factory. The
seals must not be removed.
If liquid is allowed to penetrate the seals, the
control unit will be damaged!
Protection class IPX4 is only guaranteed if the
control box cover is closed with an audible
click of the locking mechanism, and the seal
edges and nose are not damaged.
L5311,2400E.1/12.03

Technical Instructions Linear drive Ecomag
Magnetic – The Linear Drives Company™ page 6/10
4Operation
4.1 Controlling an actuator
The EHE handswitch is used to actuate one
or more ECOMAG linear actuators. A control
panel is provided on the front foil of each
handswitch for each actuator that is to be
controlled (see Fig. 12). This consists of two
push-buttons that are positioned offset
from each other. On the front plate are the
symbols which are assigned to the function
and are used for adjusting the individual lin-
ear actuators.
Up to 4 linear actuators can be actuated
separately.
Fig. 12 – Handswitch EHE
Pressing one of the push-buttons activates the relevant linear actuator. It moves for
as long as the button is held depressed.
Button The actuator extends
Button The actuator retracts
Fastening hook
It is possible to retrofit the handswitch with a fastening hook.
The fastening hook is attached to the adhesive surface provided on the rear of the
handswitch using adhesive film.
4.2 Locking device
As an option, it is also possible to lock the
individual actuators on the EHE handswitch.
This gives the unit failure safety in accor-
dance with EN 60601-2-38.
In Lock or Unlock programming mode, the
locking key must always be placed in the
bores situated on the rear of the
handswitch.
Fig. 13 – EHE.. locking / unlocking the handswitch
Locking the handswitch
Place the locking key with cam into the bore on the rear of the handswitch.
Press the "DOWN" button of the actuator that is to be locked. The display lights
up yellow.
The actuator is locked.
Unlocking the handswitch
Verriegelungsschlüssel mit Nocken in die Bohrung auf der Rückseite des Hand-
schalters legen.
Press the "UP" button of the locked actuator. The display lights up green.
The actuator is unlocked.
AB
AUF
If the feed speed of the linear actuator dimin-
ishes, or it no longer works under load, it must
be uninstalled immediately and taken out of
use.
Risk of personal injury!
To avoid inadvertent activation of the control
device, we recommend the optional locking
device (EHE3).
After locking or unlocking, the locking key
must be removed and the set functions
checked.
L5311,2400E.1/12.03

Technical Instructions Linear drive Ecomag
Magnetic – The Linear Drives Company™ page 7/10
4.3 "Emergency lowering" in the event of a power
failure (option)
If the power fails, the actuators can be moved to their lower terminal position.
If the "EMERGENCY lowering" features a patient safety function in the event of a
power failure, the user must ensure that:
the battery capacity is satisfactory,
the function is checked regularly by briefly pressing the "AB" ("DOWN") button.
The following batteries, which have been approved by the manufacturer, may be used:
Panasonic 9 V Alkaline 6LR61,
Varta 9 V Alkaline 6LR61 and
Energizer 9 V Alkaline 6LR61
Changing the batteries
Remove the cover (see Fig. 12).
Replace the batteries.
Replace the cover with the line mark facing upwards.
Fig. 12 – Opening / closing the battery cover
4.4 Rapid adjustment (optional)
Function
The rapid adjustment function is used for "emergency rapid lowering" of the head or
the foot of the bed (during patient resuscitation).
If a power failure or actuator malfunction should occur, or for beds which are not
connected to a power supply, the rapid adjustment device can be used to manually
lower the head or foot of the bed (further option).
When installing an actuator with rapid adjustment function, a warning notice (Fig.
13) in accordance with EN 60601-1, Section 6.3c and 6.4, must be attached clearly to
the end product (insofar as the end application is subject to this standard).
Fig. 13 – Warning notice for rapid adjustment
Magnetic AG, Liestal, recommends that the
batteries be replaced each time the "EMER-
GENCY lowering" function is used.
Damaged, spent batteries must be replaced
anyway.
Batteries must be disposed of correctly or re-
turned to Magnetic Liestal AG. They must not
be disposed of in the general household
waste!
Protection class IPX4 is only guaranteed if the
marking on the cover matches the marking on
the housing.
The rapid adjustment function should only be
used in emergencies, or to test that it is work-
ing properly.
When retracted, the actuator must lie against
a fixed limit stop (e.g. bed frame), since other-
wise the actuator may be damaged by a rap-
id-lowering action.
No transverse forces (misaligned mounting)
must be allowed to act on the linear actuator,
since otherwise the function of the rapid ad-
justment feature cannot be guaranteed.
The screws in the pivot clamp must not be
tightened or loosened!
The rapid adjustment function must be
checked every 6 months.
L5311,2400E.1/12.03

Technical Instructions Linear drive Ecomag
Magnetic – The Linear Drives Company™ page 8/10
Usage
Fig. 14 – Opening the clamping lever Fig. 15 – Closing the clamping lever
Open the red clamping lever (see Fig. 14, (1)).
While doing so, hold the head of the bed firmly. Depending on the bed design,
the head or foot can lower quickly.
Manually press the rapid adjustment mechanism downwards (see Fig. 16, (3) e.g.
backrest).
Close the red clamping lever (see Fig. 15, (1)) until it reaches its end position (4).
You must ensure that, whatever position the clamping lever is in, it can be actuated as
shown in Figs. 14 and 15.
Fig. 16 – Pushing the head or foot of the bed downwards
After a rapid lowering action, the clamping lever must be in closed position before the
linear actuator is used again.
The emergency lowering mechanism must not
be treated with oil, grease or any other lubri-
cating substance, since this can lead to it be-
coming dangerously easy to move!
It must be ensured that no objects can hinder
the lowering action.
The minimum actuation force on the actuator
for rapid adjustment must be at least 1200
N.Inadvertent actuation of the clamping lever
must be ruled out.
If the backrest or footrest of the bed is adjust-
ed and released manually, the actuator will
move back to its starting position.
Risk of pinching / injury!
L5311,2400E.1/12.03

Technical Instructions Linear drive Ecomag
Magnetic – The Linear Drives Company™ page 9/10
5Maintenance and Care
5.1 Maintenance
The actuators may only be opened and worked on by the Magnetic Customer Service.
The fork heads, housing and power cable must be checked for mechanical damage
(e.g. cracks) every 6 months.
The user must undertake to monitor the products vigilantly.
The actuators are greased with Magnetic-approved lubricants, and do not require any
maintenance for the following service life:
Service life: Max. 10,000 double-strokes with a stroke of 200 mm.
(The question of how the double-stroke specification is translated into a useful service
life must be defined by the manufacturer of the end product).
When the service life expires, the actuator must be removed and overhauled by the
manufacturer. Risk of personal injury!
For applications where it is highly likely that the service life will be exceeded, we rec-
ommend the use of the optional safety nut.
The rapid adjustment option must be checked every 6 months. If excessive force is
needed to move the actuator, or it runs too freely, it should be exchanged.
Duty cycle
The actuator has been designed for intermittent operation (see label). If a higher duty
cycle is used, please contact the Magnetic factory.
Thermofuse
The ECOMAG linear actuator is fitted with a thermofuse. The thermoswitch integrated
into the motor switches the actuator off if the temperature becomes excessive.
5.2 Care
Protection from water, cleaning, disinfecting
The following protection classes are only guaranteed in assembled status:
Linear actuator and control unit IP X4
Housing of the optional mains disconnection device IP X0
Handswitch IP X6 und IP X7
Clean after use in order to avoid the accretion of residues!
The actuator may be cleaned with a damp cloth and water. Add a little isopropyl alco-
hol if necessary.
5.3 Disposal
The actuators and control unit components may be returned to Magnetic Liestal AG
for disposal.
5.4 Liability
In every case, the owner or operator of the unit shall be liable for its function if it has
been incorrectly maintained or repaired by persons who are not employed by the
Magnetic Service Department or if the unit has not been operated in accordance with
the specified application.
Magnetic Aktiengesellschaft shall not be liable for any damage resulting from failure
to observe these instructions. These instructions shall not be regarded as an extension
of the warranty and liability terms set out in the Conditions of Sale and Supply ap-
plied by Magnetic Aktiengesellschaft.
The product is not subject to the labelling requirements of the CE or EMC guidelines.
The required EMC measures for the end product must be met by its manufacturer, tak-
ing into account installation factors, wiring and control, and these must be checked
for compliance with the intended application.
Observance of these instructions is the responsibility of the manufacturer of the ma-
chine or equipment.
Ensure that no liquids are allowed to pene-
trate the connections!
Washing water with chemical additives must
be pH neutral.
Excessively acidic or alkaline washing water
can permanently damage the metal and plas-
tic components of the actuator.
High-pressure steam cleansing equipment
must not be used.
The maximum current consumption under full
load must be measured. It must not exceed
the value specified on the label. Higher cur-
rent consumption means that the linear actu-
ator is overloaded and may be damaged!
L5311,2400E.1/12.03