DARAY SL720 User manual

SL720
LED Minor Surgical Light
Operating & Installation Manual
QAM.SL720.0219.4

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Table of Contents
1. Introduction........................................................................................... 3
1.1 Supported Lights ................................................................................ 4
1.2 Technical Specifications ....................................................................... 4
1.3 Pre-Installation Responsibilities .............................................................. 4
1.4 Component packing list ........................................................................ 5
2. Operation.............................................................................................. 6
2.1 Range of Motion ................................................................................. 6
2.2 Pre-Start Checks ................................................................................ 7
2.3 Battery Back-up (Optional) .................................................................... 7
2.4 Powering On & Variable Intensity ............................................................ 8
2.5 Adjusting the Lighthead........................................................................ 8
3. Assembly Guide Section............................................................................. 9
3.1 Ceiling Mounted Version ..................................................................... 10
3.1.1 Attachment methods and void suspension .......................................... 11
3.1.2 Lighting configuration .................................................................. 11
3.1.3 Installing the Ceiling plate............................................................. 12
3.1.4 Wiring and transformer layout ........................................................ 13
3.1.5 Primary rotation arm installation..................................................... 14
3.1.6 Suspension arm Installation ........................................................... 15
3.1.7 Hook arm and lighthead Installation ................................................. 15
3.1.8 Attaching the Ceiling Cover ........................................................... 16
3.2 Wall Mounted Version ........................................................................ 17
3.2.1 Attachment methods ................................................................... 17
3.2.2 Lighting configuration .................................................................. 18
3.2.3 Installing the wall plate ................................................................ 18
3.2.4 Wiring and transformer layout ........................................................ 18
3.2.5 Primary rotation arm installation..................................................... 18
3.2.6 Suspension arm Installation ........................................................... 19
3.2.7 Hook arm and lighthead Installation ................................................. 19
3.2.8 Attaching the Wall Cover .............................................................. 20
4. Maintenance ........................................................................................ 21
4.1 Maintenance schedule........................................................................ 21
4.2 Safety Precautions ............................................................................ 21
4.3 Product cleaning & care guidelines ........................................................ 22
4.4 Fuses and their replacement ................................................................ 23
4.5 Replacing the LED Bulbs ..................................................................... 23
4.6 Adjustments.................................................................................... 23
4.6.1 Detaching Parts.......................................................................... 25
5. Troubleshooting Guide ............................................................................ 26
7. Warranty Information ............................................................................. 27
7.1 Returns Policy ................................................................................. 27
7.2 Warranty Details .............................................................................. 28

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1. Introduction
Thank you for choosing a DARAY SL720 Minor Surgery light.
The SL720 light is specifically designed to meet the demanding needs of today’s
medical department whilst providing the finest quality design with superior
performance, reliability and value.
This user & installation guide has been provided to give detailed descriptions
covering the performance, operation and safety information of the device. It’s
recommended that users read through this manual before using the device so they
are aware of how to operate the device and all of its features appropriately.
It also contains all the information you need for the installation and maintenance of
the light.
Restrictions and Liabilities
Information in this document is subject to change and does not represent a
commitment by DARAY. Changes made to the information in this document will be
incorporated in new editions of the publication. No responsibility is assumed by
DARAY for the use or reliability of software or equipment that is not supplied by
DARAY.
For further information on our product range and find out more about our company
please visit www.DARAY.co.uk or call 0333 321 0971
This product was designed & manufactured in Great Britain by:
DARAY Ltd.
Edison House, Robian Way
Swadlincote
Derbyshire
DE11 9DH

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1.1 Supported Lights
1.2 Technical Specifications
Light Source
LED
Light Intensity (Lux) @ 0.75m
12,500 –77,000 Lux ±5%
Light Intensity (Lux) @ 1.0m
8,000 –50,000 Lux ±5%
Colour Temperature (Kelvin)
3,600 –5,500K ±500
Colour Rendering Index (CRI)
85 ~ 93
Colour Rendering (R9)
56 ~ 90
Light Field Diameter (D50)
100 - 180mm
Focusing Depth
800mm
LED Power
12W (12x1W LED’s)
Input Power
30W
Output Supply Rating
24V DC
Input Supply Rating
100 –240V AC 50/60Hz
Average Working Life
>50,000 hours
1.3 Pre-Installation Responsibilities
This document is a guide to the steps that need to be performed to correctly install
the SL720 Minor surgery light. However, the work required to be performed is the
responsibility of the owner or designated contractor/s.
All fixings between DARAY lights and the building super-structure must be approved
by either the chief project engineer or an appropriate and competent structural
assessor.
The Following Models are supported in this Manual
SL720 Minor surgery Light
SL720LC Ceiling Mounted Edition
SL720LW Wall Mounted Edition

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1.4 Component packing list
The components supplied by DARAY for fitting / installation should be the following
items in the specified quantities.
SL720 Ceiling Mounted Packing List
Qty.
Light head and hook arm
1
Ceiling mount with primary rotation arm
1
Suspension arm first section
1
User Manual
1
Removable Handle
1
SL720 Wall Mounted Packing List
Qty.
Light head and hook arm
1
Wall mount with primary rotation arm
1
Suspension arm first section
1
User Manual
1
Removable Handle
1

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Control Panel
Suspension Arm
Rotation Arm
Lighthead
Ceiling
Mount
Cover
Downtube arm boss
2. Operation
2.1 Range of Motion
The range of motion between the SL720 series varies.
This dimensional image depicts the range of movement
on a standard ceiling mounted unit.

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2.2 Pre-Start Checks
Please check that the power cable is without visible damage, harsh folds, knots or
cuts in the rubberised coating.
Users should not look directly into the light as it is bright and will illuminate when
powering on.
When applicable, please check that the cable is fully inserted into the power socket,
before switching the power on.
Please check (when applicable) that the head and arms are without visible damage,
and all LED’s are present in the lighthead.
2.3 Battery Back-up (Optional)
The SL720 series has the capability of using a battery back-up system.
The battery should be conditioned before being used for the first time. Battery conditioning
involves removing all the charge from the battery. Batteries should be conditioned regularly.
Condition a battery when the device is stored for long periods, or when the charge becomes
noticeably shorter.
Follow the steps below to condition a battery:
1. Disconnect the battery from the light.
2. Attach the battery in need of conditioning to a suitable electrical supply.
3. Charge the device uninterrupted for up to 10 hours.
4. Disconnect the electrical supply and re-attach the battery to the light, allow the light
(while disconnected from its primary power source) to run on the battery until it
shuts off.
5. Charge the battery until full charged again.
6. The battery is now conditioned.
Batteries can deteriorate over time, meaning a reduction in their performance.
To check the performance of a battery, follow the steps below:
1. Charge the battery uninterrupted for 10 hours.
2. Disconnect the mains supply to the light and allow it to run on the battery until it
shuts off.
3. The operating time of the light reflects the condition of the battery. If the operating
time is significantly lower than when first purchased despite conditioning it, you will
need to replace the battery.

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2.4 Powering On & Variable Intensity
The SL720 uses a single button (on the side of the head) to power the light on and off.
Next to this switch are four buttons split into paired controls for variable intensity (LUM -
Luminence) and colour temperature (TEM - Temperature); press the +button to increase light
intensity or colour temperature and press the –button to reduce them.
2.5 Adjusting the Lighthead
For the wall and ceiling mounted SL720, the head is secured using a large white, balanced and
adjustable arm system. The head itself has adjustable movement through a combination of
tensioned hinge joints connecting the head to the arm system.
General movement of the head should be through the use of the removable handle located on
the front of the head.
If the head’s movement is incorrectly loose or stiff then you may need to adjust the tension in
the joints using the grub screw system. Details of all tension adjustments can be found in the
maintenance section of this user manual.
This lighthead and arm design incorporates anti-rotation stopping points, this is to
prevent cable damage. Attempting to force the movement past these points may
cause severe damage to the light.

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3. Assembly Guide Section

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3.1 Ceiling Mounted Version
The ceiling structure must be capable of handling a significant load.
The procedures below are detailed to a high level however If in doubt please consult a
qualified electrician.
Minimum Room Requirements
The SL720 Series ceiling mounted light has a standard fixing
height of 2.47m. The design works off a fixed plate system
and has a large vertical motion.
Maximum Room Requirements
Please note, if the ceiling / fixing point of the light is
above 2.57m then a customised ceiling mount may be
required, (please contact DARAY for more information).
If a suspended ceiling is in the room, you may need to
construct a platform down to the required fixing height.
Live Electric Circuitry
All personnel working around live circuitry should be
qualified and following proper procedures.
Heavy or Difficult fittings
Fitting the ceiling plate can be difficult and aspects of the
fitting may require more than one person; this work should
only be attempted by appropriate and competent personnel.
Existing Environmental Factors
When fitting, considerations have to be taken for existing
services such as; fire alarms, vents, lights, etc. along with
interior ceiling construction and any surrounding hazard.
Environmental Responsibility
Once our products are installed all packaging should be
disposed of appropriately and recycled in accordance with
local governing regulations.
The normal life span of the SL720 series is up to ten years.
We recommend the equipment should be discarded and
recycled when reaching the end of its life.

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These instructions are based on the assumption of a fresh fit into a room with no previous
lighting structures. With installations onto sites with equipment already in place, we
recommend that the previous lights’ mounting plates be removed and the new ones fitted as if
into a fresh fitting.
3.1.1 Attachment methods and void suspension
After confirming the structural stability of the fixing point it will be necessary to decide on the
best installation technique for attaching the ceiling plate. There are various different methods
for loading the plate onto the ceiling, some example methods that can be used are:
Bolted Directly into a structural slab and secured with chemical bonding
This is our primary choice for mounting our lights to the ceiling structure, appropriate rawl
bolts and chemical bonding should be used to secure the fitting.
Bolted to a Uni-strut Construct
When using a uni-strut construct for mounting the ceiling plate, you should ensure that the uni-
strut is cross braced to ensure it is secure and does not move.
Welded to structure
The fixing plate is the component that would be welded to the structure; any welding must be
assessed to be capable of handling a 500Kg load.
System anchored to composite deck
A customised composite deck could be used either in conjunction with or as a replacement to
the fixing plate. Any substitute parts must meet safety standards and be assessed by a
competent structural assessor. The composite deck is designed to spread the weight of the light
over an enlarged area.
System bolted to structure
This system requires prior planning during the base construction phase of the ceiling above,
bolts should be fed through the metal ceiling prior to the concrete base being poured. These
bolts should be based on the fixing plate layout (available upon request from DARAY).
3.1.2 Lighting configuration
Dependant on the choice of attachment method, and whether the light is being attached in a
void or directly onto an open surface ceiling; custom mounting aspects may be required.
The standard SL720 has an integrated ceiling plate, downtube and rotation arm system which
cannot be modified after leaving DARAY. If you require a customised SL720 for a different fixing
height please contact DARAY to discuss options.
DARAY’s standard mounting recommendation is to have the fixing plate directly bolted into the
structure of an open surface ceiling and secured with chemical bonding whenever suitable.
Ultimately the mounting method used is the responsibility of the project engineer or fitter. This
includes the specification of attachment hardware, lateral bracing and the suitability of the
surface to be fixed to.

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3.1.3 Installing the Ceiling plate
The location of the light should be decided by the end user / project manager or through
schematical drawings. Once the location has been decided it will be necessary to first mark the
location of the fixing points for the ceiling plate.
Depending on the choice of attachment method, fitting your ceiling plate will require bolts to
be inserted into the ceiling superstructure. It is highly advisable that the plate being fixed to
the ceiling, is secured with a minimum of 4 bolting points to ensure a complete and sturdy fit.
Once the fixings are fitted and secured, you will need to attach a locking nut to each bolt
before attaching the ceiling plate.
The SL720 series integrates the ceiling plate, downtube and primary rotation arm all together
as one piece, this will therefore be a minimum two man lift for safe installation of this unit.
You will need to fit the ceiling plate to the fixings and attach a 2nd (adjusting) nut to the bolts.
Ceiling plate
Dimensions
Ceiling Superstructure
Locking Nut
Adjusting Nut
Ceiling Plate
Ceiling Plate
Downtube
Fixing Bolt

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Once the ceiling plate and arm combination has been fitted, it will be necessary to ensure that
it is balanced on both the vertical and horizontal planes. This can be achieved by adjusting the
lowest level of nuts (the adjusting nut). Once this adjustment has been done tighten the top
level of nuts down to the ceiling plate to lock the plate into position.
After any adjustment to the light it will be necessary to check that all fixings are still sound and
that locking nuts are tight.
3.1.4 Wiring and transformer layout
Before working on electrical connections please make sure that the power to the
light is switched off at the source and secured so that it will not be turned on
during your work.
The mains power supply should meet IEC60245-1 requirements and should be
fitted with a fixed master switch. (The switch should meet IEC328 requirements
and the directional movement parts of the switch should meet IEC447
requirements and the symbols should meet IEC60601-1 requirements.)
Ideally the cable used to power the light should be of a 1.5mm twin and earth type. DARAY
recommends that the power supplied uses an earthed switched fused spur, protected with a 3
amp fuse.
The above wiring is for modern wiring applications (post 2000). On completion of the wiring,
the next stage will be attaching the suspension arms to the ceiling mount.
Before any cabling can be done you will need to feed the mains connection down through the
ceiling plate and through a hole near the top of the mount, located behind the central
transformer (indicated on the image below). There will already be low voltage cables from the
arm system running through this hole.
The wiring should be as follows:
Live terminal brown wire.
Neutral terminal blue wire.
Earth terminal green/yellow wire.
Cables need
to be fed
through this
hole

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All cables leading to the transformer are pre-attached. The mains connection will need to be
attached to the high voltage cables running off the transformer. You will not need to conduct
any electrical wiring on the transformer.
The mains connection should be connected through a switched fused spur and is the only
connection that you will need to wire in. All other connections in this light are low voltage DC
connections that will be connected via the Molex plug connectors already fitted.
3.1.5 Primary rotation arm installation
The primary rotation arm is fitted to a 360 Degree arm boss system; the arm and arm boss
section are supplied attached to the downtube and ceiling plate. This section is secured in
place with 8 locking screws.
Before progressing onto fixing the other sections, ensure that the rotation arm is attached
securely.
Locking
Screws
Mains
Connection
Low Voltage
DC Output

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3.1.6 Suspension arm Installation
The Suspension arm uses an internal rotary system which allows the joint to have 360 degree
rotation. To install the arm you will need to first remove the screws from each side of the arm
joint spigot.
Connect the power cables and then push the suspension arm’s
spigot up into the rotation arm (ensuring you do not catch the
wires), then re-insert the screws to secure it in place.
Warning, without the lighthead attached, the suspension
arm will spring upwards rapidly. Keep control of the arm
at all times and avoid any obstructions in its path.
3.1.7 Hook arm and lighthead Installation
The hook arm and lighthead section needs to be attached to the suspension arm system.
Remove all screws within the joint including the grub screw.
Warning, please observe the cable polarities and ensure that they
match, incorrectly wiring the device will cause damage to the system
Remove all
screws
Connect
Molex

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Connect the Molex points and whilst ensuring the cables do not get caught, insert the spigot
into the arm. Align the holes and reinsert all screws. Be careful when inserting the grub
screw, insert until hand tight then slacken the grub 1/4 of a turn.
3.1.8 Attaching the Ceiling Cover
The last aspect of fitting is to attach the ceiling mount cover.
The primary cover is split into 2 halves. You will need to place the two halves over the ceiling
mount and secure them together using the screws provided.
Once the two halves of the primary cover are connected, you will be able to work this cover
over the cabling and then slide the securing ring up the downtube to the ceiling mount cover
then lock it in place.
Supply power to the mains connection and power the light on using the button located on the
lighthead. Check that all LED’s illuminate.
The light can now be tested by applying power and checking the arms and head for smooth &
correct movement. If the head is drifting, or if the movement of the arm is stiff, use a hex tool
to adjust the tensions detailed in maintenance section of this manual. Your new DARAY light is
now ready for use.
To gain full support of our warranty please fill in the warranty details online at
http://www.DARAY.co.uk/docs/warranty.php
NOTE: The mains power supply should meet IEC60245-1 requirements.

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3.2 Wall Mounted Version
The wall structure must be load bearing.
Power Supply
The SL720 wall mounted edition uses an IEC power
connection located on the left side of the power box.
Please take the length of the supplied IEC in consideration
when deciding on the location and placement of your unit.
Heavy or Difficult fittings
Fitting the mounting plate can be difficult and aspects of the
fitting may require more than one person; this work should
only be attempted by appropriate and competent personnel.
Existing Environmental Factors
When fitting, considerations have to be taken for existing
services such as; cabinets, vents, light switches, etc. along
with interior wall construction and any surrounding hazard.
Environmental Responsibility
Once our products are installed all packaging should be
disposed of and recycled appropriately and in accordance
with local governing regulations.
The normal life span of the SL720 series is up to ten years.
We recommend the equipment should be discarded and
recycled when reaching the end of its life.
These instructions are based on the assumption of a fresh fit into a room with no previous
lighting structures. With installations onto sites with equipment already in place, we
recommend that the previous lights’ mounting plates be removed and the new ones fitted as if
into a fresh fitting.
After concluding the structural stability of the wall structure it will be necessary to assess the
construct and decide on the best course of action for installing the wall plate.
3.2.1 Attachment methods
The wall mount system is split into 3 parts, the fixing plate and primary arm boss, the
suspension arm and the lighthead. Please note, the recommended installation height is with the
bottom of the suspension arm’s spigot joint being no lower than 1.9m.
Note: The wall mounting plate should only be installed on a load bearing wall.

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3.2.2 Lighting configuration
DARAY’s standard mounting recommendation is to have the wall plate directly bolted into the
structure of an open surface when possible.
Ultimately the mounting method used is the responsibility of the project engineer or fitter. This
includes the specification of attachment hardware, lateral bracing and the suitability of the
surface to be fixed to.
3.2.3 Installing the wall plate
To install the wall plate you may need more than 1 person.
Align the mount to the wall and mark your fixing points.
Ensure the light is completely true on both the horizontal
and vertical planes.
It is essential that this mount is true on both planes as
otherwise it may cause the arms to swing in an
uncontrollable manner.
With the fixing bolts secured, place a nut onto each of the
fixings, then mount the plate onto the wall and secure in
place with more nuts to lock the design in place.
3.2.4 Wiring and transformer layout
The SL720 Wall uses an enclosed transformer system which is attached to 1.5m of
cable and a standard type G style plug.
Note: this cable system is detachable along with the wall mount cover,
disconnecting this may be useful when initially mounting the wall plate.
With the use of the pre-installed plug on the wall mounted SL720; you will be able to
fully install the light without the need to perform any electrical wiring except for
connecting the Molex plugs between the arms.
3.2.5 Primary rotation arm installation
This wall system has the primary rotation pre-attached into the wall plate / arm boss
system and will not require separate installation.

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3.2.6 Suspension arm Installation
With the wall mount and primary arm connected; the vertical suspension arm should be
connected. This arm uses an internal rotary system which allows the joint to have 360 degree
rotation. To install the arm you will need to first remove all the screws from each side of the
arm joint spigot.
Connect the power cables and then align the screw holes in both
sections with each other, then push the suspension arm’s spigot up into
the rotation arm (ensuring you do not catch the wires), then re-insert the
screws to secure it in place.
Warning, without the lighthead attached, the suspension arm
will spring upwards rapidly. Keep control of the arm at all
times and avoid any obstructions in its path.
3.2.7 Hook arm and lighthead Installation
The hook arm and lighthead section needs to be attached to the
suspension arm system. Remove all screws within the joint including the
grub screw.
Warning, please observe the cable polarities and ensure that they
match, incorrectly wiring the device will cause damage to the system