ML System Two D Series Manual

INSTALLATION AND
SERVICE MANUAL

System Two LED Installation and Service Manual (1003385 Rev. C) Page 2
System Two LED
Agency Approvals
Medical Electrical Equipment
With respect to electric shock, fire
And mechanical hazards only
In accordance with IEC60601-1:2006/CAN/CSA C22.2
No.601.1-M90 with updates 1 & 2
Classifications:
1. Protection against electrical shock (5.1, 5.2). Class I permanently connected,
2. Protection against harmful ingress of water (5.3). None.
3. Degree of safety in the presence of flammable anesthetics or oxygen (5.5). Not suitable for use in the
presence of flammable anesthetics or oxygen.
4. Mode of operation (5.6). Continuous
5. Surgical luminaries (IEC60601-2-41)
Electromagnetic compatibility for immunity
And emissions in accordance with
IEC/EN 60601-1-2:2007 edition 3.0 (with 1:2008+A2:2009) and
CISPR 11 Class A
Medical Electrical Equipment
Particular requirements for the safety of surgical
luminaries and luminaries for diagnosis
In accordance with IEC-60601-2-41
Intended use: Professional Medical Lighting for Hospital, Clinic, Minor Surgery, Examination or Diagnosis, within
suitable facilities designated for such purposes. This light system is mounted centrally in a room such that access is
available all around the operating environment.
User interface: The System Two LED lighting systems are intended to be used by medical professionals in
surgeries and exam rooms. The functional interfaces are 360° positioning horizontally and vertically +15° to -65°.
The light head can be rotated continuously. An ON/OFF button is provided with 5 levels of dimming and Endo
mode.
Misuses: For any purpose or use at any facility other than stated above. Caution shall be exercised when
positioning the light head and avoid contact or collision with the patent, other medical professionals or other
lights/equipment.
Cautions: Do not apply excessive force to motion range stop features.

System Two LED Installation and Service Manual (1003385 Rev. C) Page 3
Versions
Height adjustment
Brakes

System Two LED Installation and Service Manual (1003385 Rev. C) Page 4
Parts and control elements
The schematic representation on page 3 illustrates the System
Two central axis S1, S2 and S3 versions as examples. The
parts and control elements of the System Two central axis C1
and C2 versions (not illustrated) are identical.
[1] Ceiling Cover
There are two Covers available. The Standard Ceiling
Cover is sufficient in most basic installations. The large
Ceiling Cover should be used when needed to cover a
larger area.
[2] Ceiling tube
Variable lengths for compensating different ceiling
heights
[3] Rotating canopy
For System Two LED central axis S2 and S3 versions
only
[4] Extension Arm
Different lengths depending on the version
[5] Spring Arm
Different configurations (ie: Standard or Flat Cardanic for
Light Head/Yoke assembly or & Monitor Cradle)

System Two LED Installation and Service Manual (1003385 Rev. C) Page 5
Thank you
Visit us on the Internet
E-mail Address
Thank you for purchasing this Medical Illumination product.
Please read these Operating Instructions very carefully, abide
by the safety notices and observe all operating and cleaning
requirements.
These Operating Instructions apply to;
System Two LED Surgical Light and Central Axis S1
System Two LED Surgical Light and Central Axis S2
System Two LED Surgical Light and Central Axis S3
Please do not hesitate to contact our Customer Service
team
if you have any questions about the appliance and its
installation, and also in service or warranty cases.
Manufacturer and distributor
Medical Illumination International
547 Library St
San Fernando, CA 91340
[phone]
www.medillum.com
[e-mail]
Supplier’s address
Space for supplier’s stamp or label

System Two LED Installation and Service Manual (1003385 Rev. C) Page 6
Notes on these Operating Instructions
Copyright
Modifications to the appliance
Modifications to the Operating Instructions
Translations
Notes on copyright and property rights
All rights reserved. These Operating Instructions are
protected by copyright law.
Any other use than that regulated by law must be approved
in writing by Medical Illumination International, hereinafter
referred to as MI.
MI does not take any liability for or in relation to the misuse
of this information in the prohibited manner by any person or
company.
Modifications and translations
MI products are subject to continuous further development.
MI reserves the right to modify the form, equipment and
technology of the scope of supply without prior notice.
The contents of these Operating Instructions are subject to
change without prior notice.
In case of translations into foreign languages, the English
version of these Operating Instructions shall take
precedence
Trademarks
All trademarks mentioned in these Operating Instructions
are the sole and exclusive property of the corresponding
manufacturer.

System Two LED Installation and Service Manual (1003385 Rev. C) Page 7
Table of Contents
Section 1: General Information............................................................................................................................... 9
Important Information for Safe Use........................................................................................................................9
Definition of Terms...............................................................................................................................................12
List of Symbols.....................................................................................................................................................13
Limited Warranty..................................................................................................................................................14
Section 2: Product Specifications........................................................................................................................ 15
Section 3: Pre-Installation Guidelines .................................................................................................................17
Mounting Plate preparation with an Interface Plate .............................................................................................18
Ceiling Structure Construction and Mounting.......................................................................................................19
Ceiling Cover........................................................................................................................................................19
Power Box............................................................................................................................................................20
Ceiling Rod Calculation, Single Mount.................................................................................................................21
Ceiling Rod Calculation, Dual Mount ...................................................................................................................22
Ceiling Rod Calculation, Triple Mount..................................................................................................................23
Ceiling Rod Calculation, Single LCH Mount.........................................................................................................24
Ceiling Rod Calculation, Dual LCH Mount...........................................................................................................25
Ceiling Rod Calculation, Triple LCH Mount..........................................................................................................26
Section 4: Installing the Light System................................................................................................................. 27
Installing the Central Axis.....................................................................................................................................27
Mounting the Extension Arm set to the Ceiling Tube...........................................................................................28
Mounting the Rotating Canopy.............................................................................................................................29
Mounting the L17 and LCH Spring Arm ...............................................................................................................30
Mounting the MD21/MD21+ Spring Arm..............................................................................................................31
Preparing the MD21 Spring Arm..........................................................................................................................33
Preparing the L17 Spring Arm..............................................................................................................................35
Mounting the Light Head to L17 Spring Arm........................................................................................................36
Preparing the LCH Spring Arm ............................................................................................................................37
Mounting the Light Head to LCH Spring Arm.......................................................................................................38
Positioning the Light.............................................................................................................................................39
Section 5: Adjustments.........................................................................................................................................40
Adjusting the Brakes for the Extension Arm.........................................................................................................40
Adjusting the Brakes for the Spring Arm..............................................................................................................43
Adjusting the Comfort Stop on the Extension Arm...............................................................................................45
L21/MD21 Spring Arm..........................................................................................................................................47
Adjusting the Spring Tension ...............................................................................................................................48
Adjusting the Vertical Lift......................................................................................................................................49
Adjusting the Optional Brake................................................................................................................................50
Adjusting the Yoke Brake.....................................................................................................................................53
Installation and Removal for the Sterilizable Handle Assembly (Camera Lights only) ........................................54
Installation and Removal for the HD Camera Assembly (Camera Lights only) ...................................................55
Section 6: General Maintenance .......................................................................................................................... 56
General Safety .....................................................................................................................................................56
Disinfection...........................................................................................................................................................57
Handle Sterilization and Cleaning........................................................................................................................58
Maintenance.........................................................................................................................................................59
Mounting the securing segments.........................................................................................................................61
Checking the securing segment on the Spring Arm - L21/MD21.........................................................................62
Dismantling and re-mounting the securing segment............................................................................................63
Securing segment on the Spring Arm - LCH17....................................................................................................64
Dismantling and re-mounting the securing segment Spring Arm - LCH17..........................................................65
Checking the fixing screws on the Spring Arm - LCH17......................................................................................66
Lubricating the brake screws ...............................................................................................................................67

System Two LED Installation and Service Manual (1003385 Rev. C) Page 8
Table of Illustrations
Figure 1: Ceiling Plate preparation with an Interface Plate .....................................................................................18
Figure 2: Recommended Ceiling Structure Construction ........................................................................................19
Figure 3: The Power Box .........................................................................................................................................20
Figure 4: Installing the Central Axis on a 65mm Down Tube ..................................................................................27
Figure 5: Installing the Central Axis on a 110mm Down Tube ................................................................................27
Figure 6: Mounting the Extension Arm set to the Ceiling Tube ...............................................................................28
Figure 7: Mounting the Rotating Canopy.................................................................................................................29
Figure 8: Mounting the L17 and LCH Spring Arms..................................................................................................30
Figure 9: Mounting the MD21/MD21+......................................................................................................................31
Figure 10: Mounting external cables........................................................................................................................33
Figure 11: Preparing the L17 Spring Arm................................................................................................................35
Figure 12: Mounting the Light Head ........................................................................................................................36
Figure 13: Preparing the LCH Spring Arm...............................................................................................................37
Figure 14: Mounting the Light Head to an LCH Arm ...............................................................................................38
Figure 15: Positioning the Arms...............................................................................................................................39
Figure 16: Dismantling the right-hand cover panels from the Extension Arm .........................................................40
Figure 17: Dismantling the left-hand cover panel from the Extension Arm .............................................................40
Figure 18: Adjusting the Extension Arm brakes.......................................................................................................41
Figure 19: Mounting the right-hand cover panel to the Extension Arm ...................................................................42
Figure 20: Mounting the left-hand cover panel to the Extension Arm .....................................................................42
Figure 21: Dismantling the decorative caps and socket covers ..............................................................................43
Figure 22: Adjusting the brakes...............................................................................................................................43
Figure 23: Mounting the socket covers and decorative caps to the Extension Arms..............................................44
Figure 24: Adjusting the Comfort Stop end stop on the Extension Arm..................................................................45
Figure 25: Spring Arm L21/MD21............................................................................................................................47
Figure 26: Adjusting the spring tension ...................................................................................................................48
Figure 27: Adjusting the vertical lift..........................................................................................................................49
Figure 28: Adjusting the optional brake ...................................................................................................................50
Figure 29: Adjusting the vertical lift..........................................................................................................................51
Figure 30: Adjusting the optional brake ...................................................................................................................52
Figure 31: Yoke Rotational Brake - Double Yoke....................................................................................................53
Figure 32: Attaching the Sterilizable Handle............................................................................................................54
Figure 33: Camera Assembly (D2C only)................................................................................................................55
Figure 34: Inserting Camera Assembly (D2C only) .................................................................................................55
Figure 35: Handle Sterilization.................................................................................................................................58
Figure 36: Dismantling the decorative caps and socket covers from the Extension Arm .......................................60
Figure 37: Dismantling the securing segment .........................................................................................................60
Figure 38: Mounting the securing segment .............................................................................................................61
Figure 39: Mounting the socket covers and decorative caps to the Extension Arm................................................61
Figure 40: Adjusting the L17/MD21 Spring Arm ......................................................................................................62
Figure 41: Checking the securing segment .............................................................................................................63
Figure 42: Adjusting the LCH17 Spring Arm............................................................................................................64
Figure 43: Checking the securing segment .............................................................................................................65
Figure 44: Checking the fixing screws on the Spring Arm LCH17...........................................................................66
Figure 45: Checking the securing ring on the bottom Extension Arm towards the spindle.....................................66

System Two LED Installation and Service Manual (1003385 Rev. C) Page 9
Section 1
Section 1: General Information
Important Information for Safe Use
Important Information for Safe Use
These Operating Instructions are intended solely for devices
with the manufacturer's rating plate bearing the following
information:
–Type designation: S1, S2 and S3
This identification is binding for the validity of the Operating
Instructions and must not be removed, regardless of the
type of publication (printed form, electronic form or
excerpts).
Identification of target groups
The groups of persons described below are mentioned in
these Operating Instructions.
Operator
The following natural persons or legal entities shall be
considered as operators:
All persons who use the appliance in a medical practice,
hospital, etc. or hand over the appliance to third parties for
use/application, and who have actual physical authority over
the appliance during operation.
The operator shall be liable for handing over a safe
appliance and for instructing the user in the proper operation
and normal use of the appliance.
User
The following persons shall be considered as users:
Persons who, due to their professional qualification and
instruction by the persons designated by the operator, are
authorized to operate the appliance and to work with it.
Users shall be fully responsible for the safe operation of the
appliance in accordance with its intended purpose.
Qualified personnel
The following persons shall be considered as qualified
personnel:
Persons who underwent special professional training in the
field of medicine or medical engineering,
Persons who can assess their work and recognize the
potential hazards involved on the basis of their professional
experience and instruction in safety-relevant regulations.
In States where the performance of tasks in the medical or
medical engineering sector is subject to certification,
qualified personnel must have obtained the corresponding
certificate.

System Two LED Installation and Service Manual (1003385 Rev. C) Page 10
Section 1
Important Information for Safe Use (cont)
Instruction
Duty to inform and inspect
Troubleshooting
Notes for the user
All the steps described in these Operating Instructions may
only be carried out by qualified personnel who have been
authorized and instructed by the operator.
Instruction on the appliance
The instruction must be carried out on the appliance
immediately by Medical Illumination personnel, by a
company authorized by Medical Illumination or by a person
designated by the operator.
On completion of the instruction, a certificate must be
created and signed in order to document that the user has
understood the special operator control actions required for
normal use.
User's duty to inform and inspect
Read these Operating Instructions carefully prior to
installation of the appliance. This ensures that you benefit
from all the advantages of the appliance and prevents any
risk of injury or damage.
Prior to any use or transfer for use, the functional reliability
and proper condition of the appliance must be inspected by
the user.
In case of special problems which are not sufficiently
described in detail in these Operating Instructions, contact
your supplier for your own safety.

System Two LED Installation and Service Manual (1003385 Rev. C) Page 11
Section 1
Important Information for Safe Use
Qualified personnel
Important Information for Safe Use
The system is suitable for continuous operation.
The system may only be operated by instructed, qualified
medical personnel.
The system may only be cleaned and disinfected by
instructed hygiene specialists.
Maintenance work on the system must be carried out by the
operator's technical specialist personnel in accordance with
the applicable instruction document.
Incorrect use
The maximum load bearing capacity of the system and its
components as specified in Section 5, “Maximum Load”
must not be exceeded.
Contraindications
The system must not be used close to strong magnetic
fields.

System Two LED Installation and Service Manual (1003385 Rev. C) Page 12
Section 1
Definition of Terms
I.E.C.
ETL
Medical Electrical Equipment
Central Illuminance
Light Field Center
Light Field Diameter
Depth of Illumination
Shadow Dilution
Correlated Color Temperature
Total Irradiance
Color Rendering Index (CRI)
Sterilizable Handle
Head/Yoke Assembly
Arm Assembly –Extension/Articulating
Arm
Light Mounting
Neutral Conductor (common)
Protective earth ground
Off Center Moment
International Electrotechnical Commission
Edison Testing Laboratories
Electrical equipment intended to diagnose, treat the patient
under medical supervision.
Illuminance of light head measured at 1 meter from the light
emitting area with no obstructions. The value is expressed in
Foot-candles or Lux.
The point of maximum Illuminance in the lighted area. This is
the reference point for light field size and light distribution
measurements.
The diameter of the circle where Illuminance reaches 10% of
light field center Illuminance.
The distance above and below 1 meter to where the central
Illuminance is reduced to 20%.
The ability of the equipment to minimize the impact of
shadows in the working area due to partial obstruction by the
operator or other medical personnel.
The color temperature of the light fixture when compared to a
blackbody radiator expressed in degrees Kelvin.
The total amount of energy imparted to the patient by the
lighting system expressed in Watts/meter squared.
A method of how well a light source will render other colors
when illuminating them based upon eight CIE chromaticity
coordinates measured with a SpectroRadiometer.
An easily removable device that when properly sterilized
maintains a sterile area in order to handle it under aseptic
conditions when attached to the equipment.
The part of the system which includes the light source, heat
removal system and light focusing system.
The Horizontal section of the positioning arm with pivots that
increase the area covered by the light head and articulating
arm. The articulating arm allows for vertical positioning of the
light head.
Support apparatus used to connect arm assembly/light head
to a fixed surface, consisting of either a single, double or triple
ceiling mount.
In an AC circuit, the return line for current.
The conductor used to connect the non-current-carrying metal
parts of equipment, raceways, and other enclosures to the
system grounded conductor, the grounding electrode
conductor, or both, of the circuit at the service equipment or at
the source of a separately derived system.
The unit of measurement used for torque which is caused by
an off-center load. This is measured in foot-pounds.

System Two LED Installation and Service Manual (1003385 Rev. C) Page 13
Section 1
List of Symbols
ETL Listing marking
Read accompanying documents
CE Marking
Fuse marking
Protective earth ground
Neutral conductor
Caution
Electric shock hazard
Separate collection for electric and electronic equipment.
Do not dispose of as household waste.

System Two LED Installation and Service Manual (1003385 Rev. C) Page 14
Section 1
Medical Illumination International, Inc.
Limited Warranty
This document comprises the general terms of your product’s Limited Warranty. This Limited Warranty is applicable
to products sold by Medical Illumination International, Inc. or one of its subsidiaries or divisions (collectively, “MI”)
through one of MI’s authorized dealers, distributors or sales representatives (an “authorized Dealer”). This Limited
Warranty is not applicable to any MI product not purchased from an Authorized Dealer.
Your product is warranted against defective material and/or workmanship, excluding normal replacement parts, for
a period of three (3) years from the date of shipment. Normal replacement parts include, but are not limited to,
bulbs, sterilizable handles, filters and glass items. This Limited Warranty applies exclusively to the repair or
replacement of parts recognized as defective by MI that are in normal use and have not been modified or repaired
by unauthorized personnel.
This Limited Warranty is in lieu of all other warranties, expressed or implied, including any implied
warranty of fitness for a particular purpose and all other obligations or liabilities, including liability for
incidental, special or consequential damages or labor.
In the event of a defect or failure covered under this Limited Warranty, please contact MI immediately by phone
(818/838-3025), fax [phone]), email ([e-mail]) or through our website (http://www.medillum.com).
Be prepared to give the model number, serial number and full description of the issue. This Limited Warranty will
not apply if the MI serial number affixed to the product has been removed, altered or defaced.
Our CS department will attempt to solve the problem over the phone. If it becomes necessary, we will determine, in
our sole discretion, the best way to address the issue. We may require that the product be sent to out factory for
repair. In limited instances, we may dispatch an authorized service technicians. No product serviced by other than
our authorized service technicians will be covered by this Limited Warranty.
In the event we determine that your product needs to be returned to our factory, please do not continue to use your
product. MI is not responsible for any costs, expenses, losses or damage resulting from your continued use of the
product prior to its authorized repair. MI is not responsible for costs or expenses incurred for loss of use of the
product.
If we require the return of the product to our factory, you will be provided with a Return Authorization number.
Products sent to the factory without a Return Authorization number will not be accepted. It is your obligation to
arrange for return shipment of your product to the factory for warranty service, which shall be at your expense. Your
Product must be returned to our factory within thirty (30) days of the date of the Return Authorization. Carefully
package the product and return it, freight prepaid and insured, with the Return Authorization number clearly marked
on the outside of the box, to Medical Illumination International, Inc., 547 Library Street, San Fernando, CA 91340,
RA#______________.
Damage resulting from inadequate packing is not covered by this warranty, and shipping insurance does not cover
damage due to inadequate packing. MI cannot be held responsible for in-transit loss or damage. In the event that
freight-related damage should occur, we will notify you immediately so that you can file a claim with the freight
carrier.
Within the warranty period, MI will evaluate your returned product, repair as appropriate, and ship the product back
to you with freight cost prepaid by MI. In the event that damage or failure is discovered that is not covered by this
Limited Warranty, we will contact you for your approval of all costs that may be incurred prior to commencing any
repairs.
This Limited Warranty does not cover the following:
•Any field labor or outside services, including, but not limited to, electricians, contractors, installation
services, routine maintenance or other repair services.
•Damage to the product resulting from tampering, accident, abuse, negligence, alteration, or other causes
unrelated to problems with material and/or workmanship.
•Damage due to improper installation, use, cleaning or maintenance, as outlined in the Installation and
Service Manual for the product.
•Labor costs associated with removing, re-packaging for shipment or reinstalling product.

System Two LED Installation and Service Manual (1003385 Rev. C) Page 15
Section 2
Section 2: Product Specifications
Mechanical Specifications
Parameter
Value
Weights:
Ceiling Mounting Plate
Single Central Axis
Dual Central Axis
Triple Central Axis
Spring Arm –L21
Spring Arm –LCH
Spring Arm –MD21 (Monitor Spring Arm)
Light Head assembly
Power Box (Dual Light)
Approximately 7.2 lbs (3.3kg) to 58.2 lbs (26.5kg)
Approximately 20.9 lbs (9.5kg)
Approximately 38.3 lbs (17.4kg)
Approximately 54.3 lbs (24.7kg)
Approximately 16.1 lbs (7.3kg)
Approximately 14.3 lbs (6.5kg)
Approximately 16.5 lbs (7.5kg)
Approximately 28.1 lbs (12.8kg)
Approximately 8.8 lbs (4.0kg)
Dimensions:
Ceiling Mount Plate
Available Ceiling Rod lengths
Central Axis Extension Arm lengths - Single
Central Axis Extension Arm lengths - Dual
Central Axis Extension Arm lengths - Triple
Spring Arm length
Light head assembly
11.2” (290mm) Hex Mounting Plate
8” 16” 24” 32” 39” 47”
(200mm) (400mm) (600mm) (800mm) (1.0m) (1.2m)
41.3” (1,050mm)
41.3” (1,050mm) / 35.4” (900mm)
41.3” (1,050mm) / 35.4” (900mm) / 29.5” (750mm)
36.2” (920mm)
25.5” (648 mm) Dia. x 4.75” (120 mm) deep
Electrical Specifications
Voltage
Input Voltage
100 - 240 VAC 50/60 Hz –Single Phase
LED life
50,000 hours (average)
Power:
Single
Dual
Triple
180 Watts
360 Watts
540 Watts

System Two LED Installation and Service Manual (1003385 Rev. C) Page 16
Section 2
Section 2: Specifications
Optical Specifications
Correlated Color Temperature
D-Series
Vu-160
Vu-E
Irradiance
Color Rendering Index (CRI R1-R8=RA)
Color Rendering Index R9
Fixed at 4,300°K ±300°K
Fixed at 4,300°K ±300°K
Variable between 3,800°K to 4,800 K ±300°K
128 W/m2 (1 m)
95
95
Focal length
D-Series Central Illuminance (full intensity)
Dimming –5 Intensity Levels
(Indicated by 5 LED’s on 2
indicator strips located 180° apart)
Vu-160/Vu-E Central Illuminance (full intensity)
Dimming –5 Levels
(Indicated by 5 LED’s on 2
indicator strips located 180° apart)
Endo Mode
D-Series
Vu
Light field diameter (adjustable)
Depth of illumination
Diameter (d50)
Illuminance (one mask)
Illuminance (two masks)
Illuminance at bottom of standard tube
Illuminance at bottom of standard tube with one
mask
Illuminance at bottom of standard tube with two
masks
39.4” (1 meter)
130,000 ± 5K Lux.
100% 87.5% 75% 62.5% 50%
130,000 113,750 97,500 81,250 65,000
160,000 +0 / -10K LUX @4,300°K
100% 87.5% 75% 62.5% 50%
160,000 140,000 120,000 100,000 80,000
LUX LUX LUX LUX LUX
10% - 12 white LED’s triangulated 120° apart (8,500 LUX)
7.4% - 6 green LED’s located 60° apart @4300°K
9.5” – 14” (229mm – 356mm)
32.3” (820mm)
5.5” (127mm – 140mm)
74,560 Lux (6,930 fc)
62,408 Lux (5,800 fc)
132,300 Lux (12,300 fc)
72,630 Lux (6,750 fc)
60,256 Lux (5,600 fc)
Environmental Specifications
Ambient/Operating temperature
41F to 104F (-10C to 40°C)
Storage temperature range
-4F to 122F (-20C to 50°C)
Humidity
10% - 75% Relative Humidity
Pressure
500 hPA to 1,060hPA (@<2K meters)

System Two LED Installation and Service Manual (1003385 Rev. C) Page 17
Section 3
Section 3: Pre-Installation Guidelines
SPECIAL NOTE: Installation and repair of this equipment should be performed by a qualified mechanical
contractor only. Medical Illumination does not warranty any damage occurring as a result of improper
installation.
It is recommended that this installation manual be completely reviewed prior to installation.
Before installation, check to ensure the following minimum conditions are provided:
The structural ceiling mount is designed to support a vertical load of 300 lbs (triple) and an off-center moment
of 960 ft-lbs, the single light is significantly less. The structural mount should meet all local building codes.
A structural mount that does not meet these minimum conditions can cause serious injury and/or
property damage.
Failure to use the correct mounting hardware can cause the arm/head assembly to become
unstable, causing serious injury and/or property damage. If the ceiling mounting surface is not level, shim the
ceiling casting to level the assembly.
Failure to level the ceiling plate may cause unwanted arm “drifting” during use.
It is recommended that the Power Box be mounted directly over a 4-0 junction box. If this is not possible the
input power supply lines should be wired in accordance with all applicable building codes.
The supply circuit line must be as follows:
120 VAC lights-110-120 VAC 50/60 Hz, single phase, three wire, capable of supplying 700 watts @ 6.4
amperes.
230 VAC lights- 220-240 VAC, 50/60 Hz, single phase, three wire, capable of supplying 700 watts @ 3.2
amperes.
The power supply circuit must be in compliance with all applicable building codes.
It is recommended that the Lighting System is connected to its own supply circuit with integral circuit breaker.
The circuit breaker will act as the supply main disconnect switch.
The MAINS ground wire, which is green and has a ring-type terminal at the end, should be securely fastened to
the mounting plate with a screw and lock washer.
Failure to provide a circuit meeting these minimum standards or complying with local building
codes can cause a shock hazard.
Check the length of the ceiling rod supplied to make sure that it is the proper length to install and operate the
light without interference or over reach. See the Ceiling Rod Calculations.

System Two LED Installation and Service Manual (1003385 Rev. C) Page 18
Section 3
Mounting Plate preparation with an Interface Plate
If you choose to an Interface Plate in mounting your Light System, you should only use 5/8-11, A325 High Strength
Threaded Rods, Hex Nuts and Washers. The following will illustrate the recommended hardware complement.
Figure 1: Ceiling Plate preparation with an Interface Plate

System Two LED Installation and Service Manual (1003385 Rev. C) Page 19
Section 3
Ceiling Structure Construction and Mounting
The Ceiling Mount system will experience various levels of dynamic off center moment during regular use.
Therefore, it is crucial that the ceiling structure be strong enough to uphold the weight of the system and support
the positioning arms and light head without deflection. The owner and/or owner’s contractor has the final
responsibility for the strength and rigidity of the ceiling structure. An inadequate ceiling structure may result in
serious injury, unintended drift, and/or equipment damage. Because the ceiling structure is the owner’s
responsibility, the design and construction recommendation shown below covers only one of the many
possible alternatives that can be used. Medical Illumination highly recommends that the owner consult a
structural engineer prior to designing and installing the ceiling structure.
Recommended Ceiling Structure Construction Details
The illustrations below are suggested mounting schemes per 2001 California Building Code –Section 1632A:
Anchorage and Seismic. For any other mounting scheme, please consult a structural engineer and/or professional
contractor for the best solution for your situation. Installation and repair of this equipment should be performed by
qualified persons only. Medical Illumination does not warranty any damage occurring as a result of improper
installation.
Figure 2: Recommended Ceiling Structure Construction
Ceiling Cover
The Standard Ceiling Cover is included with the system and can be used in most installations. If the finished ceiling
level is above the mounting plate, or there is a larger ceiling opening, a larger Ceiling Cover is available.

System Two LED Installation and Service Manual (1003385 Rev. C) Page 20
Section 3
Power Box
The System Two LED Power Box supplies the power necessary to illuminate the System Two LED surgical light
systems. Remove the four screws on the top cover and lift cover off to make connections or change a fuse.
Figure 3: The Power Box