Excelitas Technologies OmniCure AC2 Series Installation and operating manual

OmniCure® AC2 Series
UV Curing Solutions
Applicable for the following UV LED Head models:
Model
Array Curing Width
Part Numbers
AC275-365
75mm
019-00251R
AC275-395
75 mm
019-00236R
AC275F-365
75mm
019-00270R
AC275F-395
75mm
019-00263R
AC2110-365
110 mm
019-00271R
AC2110F-365
110 mm
019-00272R
AC2110-395
110 mm
019-00239R
AC2110F-395
110 mm
019-00254R
Installation/Reference Guide
Excelitas Canada Inc.
2260 Argentia Road
Mississauga (ON)
L5N 6H7 Canada
+1 905.821.2600
www.excelitas.com
035-00589R Rev.5.0

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-00538R rev 1
Installation/Reference Guide
035-00589R
Excelitas Canada Inc. 2015
All rights reserved
No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system or
translated into any language in and form by any means without the prior written consent of Excelitas Canada
Inc. every effort has been made to ensure information in this manual is accurate, however, information in this
manual is subject to change without notice and does not represent a commitment on the part of the authors.
Trademarks:
OmniCure® is a trademark of Excelitas Canada Inc. All rights reserved. All other product names are
trademarks of their respective owners. All product or software photos shown are for reference only and are
subjected to change without notice.
Made in Canada. Doc. No. 035-00589R

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
ii
035-00589R Rev5
Revision History
Revision #
Comments
Rev 1.0
Initial release
Rev 2.0
Revised pins for enabling LED
Rev3.0
Release of new models
Rev 4.0
Updated regulatory section and corrections to technical tables
Rev 5.0
Updated to China RoHs guidelines

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
iii
035-00589R Rev5
Table Of Contents
1Introduction.......................................................................................................................................... 1
2Safety Precautions/ User Warnings.................................................................................................... 2
2.1 Glossary of Symbols ......................................................................................................................................2
2.2 Safety Precautions..........................................................................................................................................2
3Optical Safety Data.............................................................................................................................. 4
4Getting Started..................................................................................................................................... 5
4.1 Packaging Contents........................................................................................................................................ 5
4.2 System Requirements..................................................................................................................................... 5
4.3 UV LED Head Images ...................................................................................................................................6
4.4 Connecting the Power Supply and PLC Controller........................................................................................7
4.5 Powering Up and Powering Down.................................................................................................................8
5Mounting the UV Head........................................................................................................................ 9
6Connecting the UV LED Head.......................................................................................................... 10
6.1 Interfacing with the PLC.............................................................................................................................. 10
6.2 Integrating Monitoring with External Circuitry............................................................................................ 11
7Using the LED Head .......................................................................................................................... 12
7.1 Understanding the LED Indicators............................................................................................................... 12
7.2 Fault Status................................................................................................................................................... 12
8Troubleshooting ................................................................................................................................. 13
8.1 Symptoms and Possible Causes.................................................................................................................... 13
9Care and Maintenance....................................................................................................................... 14
9.1 Cautions and Handling................................................................................................................................. 14
9.2 Cleaning Materials ....................................................................................................................................... 15
9.3 Cleaning the LED Head ............................................................................................................................... 15
9.4 Cleaning the LED Head Air Intake .............................................................................................................. 15
10 Technical Specifications..................................................................................................................... 16
10.1 Environmental Conditions............................................................................................................................ 16
10.2 UV LED Head Specifications ...................................................................................................................... 16
10.3 Regulatory Compliance................................................................................................................................ 17
11 Warranty ............................................................................................................................................ 19
11.1 Checking Your Warranty Status................................................................................................................... 19
11.2 Replacement UV LED Module Warranty .................................................................................................... 19
11.3 Returning your AC2- System to Excelitas Technologies for Service........................................................... 19
12 Contact Information .......................................................................................................................... 21

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
iv
035-00589R Rev5
Figures
Figure 1 UV LED Head (front)........................................................................................................................................6
Figure 2 UV LED Head (side, top) .................................................................................................................................. 6
Figure 3 UV LED Head (back)........................................................................................................................................ 6
Figure 4 PLC2000 Remote Control Console .................................................................................................................... 7
Figure 5 PLC Connector (looking at UV Head).............................................................................................................. 10
Figure 6 PLC digital output equivalent circuit................................................................................................................ 11
Tables
Table 1 PLC Connector Pin Out ..................................................................................................................................... 11
Table 2 LED Indicator Status (UV LED Head) .............................................................................................................. 12
Table 3 Environmental Conditions ................................................................................................................................. 16
Table 4: UV LED Head Specifications........................................................................................................................... 16
Table 5 UV LED Warranty Status .................................................................................................................................. 19

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
1
035-00589R Rev5
1Introduction
The OmniCure® AC2-series represents a new standard in UV LED curing systems. The series provides a very
compact UV LED system with impressive power, irradiance uniformity, control and monitoring. The
OmniCure® AC2-series systems are offered alongside a variety of power supply, controller and cabling options,
providing configuration flexibility to suit any application for end users and integrators alike.
Optical output can be controlled via a PLC interface enabling a high degree of automation. At the heart of the
OmniCure® AC2-series are the arrays of LEDs housed within the UV LED Head and located under the optical
lens providing excellent spectral and power stability. The UV LED Head has a typical lifetime in excess of
20,000 hours of accumulated 'on’ time, made possible by the integration of state-of-the-art electronics, effective
thermal management and high performance optics. Acoustic noise is minimised through an innovative load-
adaptive fan that keeps the LEDs operating efficiently and reliably while minimising the resultant noise levels.
In the Excelitas Technologies family of UV LED light systems, all systems offer the same high level of
innovation, quality and reliability that our customers have come to expect. OmniCure® has combined next
generation optical engineering, state-of-the art electronics and fibre-optics to produce sophisticated technologies
that employ light. Today, OmniCure® is a leading developer of light-based systems for sectors ranging from
manufacturing to bio-medicine, and is unmatched in commitment to quality and service.
This manual covers the following models:
AC275-365 - 019-00251R
AC275-395 - 019-00236R
AC275F-365 - 019-00270R
AC275F-395 - 019-00263R
AC2110-365 –019-00271R
AC2110F-365 - 019-00272R
AC2110-395 - 019-00239R
AC2110F-395 - 019-00254R
Excelitas Technologies recommends reading this guide to discover all features of the OmniCure® AC2-series
Systems, and how to use them.

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
2
035-00589R Rev5
2Safety Precautions/ User Warnings
2.1 Glossary of Symbols
Caution risk of danger –consult accompanying documents.
Risk Group
WARNING: UV emitted from this product. Avoid eye and skin exposure to unshielded product.
WARNING: Possibly hazardous optical radiation emitted from this product. Do not stare into operating lamp.
Input/ Output Signals
Input Signal
Caution, Hot Surface
Protective Conductor Terminal
Earth (Ground) Terminal
CAUTION, Risk of Electrical Shock
2.2 Safety Precautions
This series of cautions and warnings relate to the installation, operation and maintenance of the OmniCure® AC-
System. They are also presented throughout this Installation/Reference Guide as applicable.
WARNING
Do not stare directly at the light emitted from the LED array. This may be harmful, resulting in eye injury.
Always use UV protective eyewear as indicated below. Additionally, protect any exposed skin with appropriate
clothing or shielding as required.
Warning UV protective eyewear must meet the following recommended optical specifications:
Spectral range; 350-440nm
Optical Density ≥ 6
Warning Should the OmniCure® AC- System be used in a manner not specified by Excelitas Technologies, the
protection provided by the equipment may be impaired.
The UV LED Head operation can be affected if handled incorrectly. Never touch the protective lens cover
assembly of the UV LED Head. The presence of skin oils may result in a decrease in system performance.

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
3
035-00589R Rev5
Always ensure the power supply unit is turned off prior to disconnecting or re-connecting the UV LED Head.
Warning:
Monitoring the system during automated operation:
The level of UV energy supplied by the OmniCure® AC- System is sufficient to ignite flammable substances.
Therefore, when the unit is operated unattended in an automated environment, an alarm function must be
provided by the user to indicate a malfunction in the associated equipment used. During installation the
appropriate measures must be included to prevent any such occurrence.

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
4
035-00589R Rev5
3Optical Safety Data
IEC 62471: Photobiological Safety of Lamps and Lamp Systems
Resulting Classification and Labelling
Hazard
AC2xxx-395
Actinic UV
Risk Group 3
Near UV
Risk Group 3
Blue Light
Risk Group 1
Retinal Thermal
Exempt Group

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
5
035-00589R Rev5
4Getting Started
4.1 Packaging Contents
Your package contains one of the following UV LED Heads, as well as a documentation CD:
Model
Array Curing Width
Part Numbers
AC275-365
75mm
019-00251R
AC275-395
75 mm
019-00236R
AC275F-365
75mm
019-00270R
AC275F-395
75mm
019-00263R
AC2110-365
110 mm
019-00271R
AC2110F-365
110 mm
019-00272R
AC2110-395
110 mm
019-00239R
AC2110F-395
110 mm
019-00254R
Carefully unpack the unit and store the packing material for future use.
4.2 System Requirements
In addition to the UV LED Head, you will require the following components:
Power supply
Power cable
You will also require a PLC controller unless you are using an existing controller. The PLC controller is used to
discover the extensive functionality of the UV LED head. Integrators can access the full feature set through
integrating with the PLC interface directly. Refer to Section 6.1.
These may be sourced separately or may be purchased from Excelitas Technologies. Check with Excelitas
Technologies to determine the appropriate components for your requirements. The following table provides the
part numbers of component parts.
AC275-365 / F
AC275-395 / F
AC2110-365 / F
AC2110-395 / F
System Controller
019-00199R
019-00199R
019-00199R
019-00199R
DC Power / Control Cable
018-00624R
018-00624R
018-00624R
018-00624R
PLC controller
014-00592R
014-00592R
014-00592R
014-00592R
Other units are available for different purposes; check with Excelitas Technologies to determine the appropriate
components for your requirements.

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
6
035-00589R Rev5
4.3 UV LED Head Images
Figure 1 UV LED Head (front)
Figure 2 UV LED Head (side, top)
Figure 3 UV LED Head (back)

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
7
035-00589R Rev5
4.4 Connecting the Power Supply and PLC Controller
All connectors are via screw style fastener -- do not over tighten the connector screws.
Note:The following is a generic procedure, illustrated with the common components described above; please
refer to specific documentation related to your power supply and controller.
Tip: After securing the power cable to the power supply, it is recommended to “tie-off” the female connector
cable on to the mounting brackets or process rigging as a form of strain relief.
1. Make sure the power supply unit is turned off.
2. Connect the AC power cord to the power supply.
3. The PLC/Power cable has two legs connected to a shared female connector:
a) Attach the male end of the long leg to the power supply unit.
b) Connect the shared connector to the UV LED Head (see Figure 2).
c) Attach the female end of the short leg to the PLC I/O connector on the controller console (see Figure
4).
4. Connect the PLC loop-back connector to the PLC pass-through port (see Figure 4).
5. Power up the UV LED Head per Section 4.5, and then push the LED Enable button on the controller to turn
power on to the LED Head.
6. Adjust intensity using the up or down buttons to the right of the display (see Figure 4), to increase or
decrease the intensity respectively. Refer to Section 7, “Using the LED Head”.
7. UV LED & Temperature faults will be indicated by an illuminated LED on the control console. To clear,
press the Clear Fault button (see Figure 4).
Figure 4 PLC2000 Remote Control Console
Mode
Up/Down
HD15 Connector
(connect to PLC,
computer or use door
lock jumper for local
operation
Alarm Indicators
Local operation switch
(off for remote operation)
UV Enable
(local mode only)
Clear (alarm)
HD15 Connector
to UV LED Head
End terminal switch
RS485 in/out connectors (for
remote daisy chain operation)
Status indicators (Local mode, UV On)
RS232/RS485
switch
Mode indicators

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
8
035-00589R Rev5
4.5 Powering Up and Powering Down
1. Ensure that the AC2- system has been properly installed, the protective blue covering has been removed
from the optical window and the UV LED Head is securely mounted with the optical window in the
desired orientation. Refer to Section 5, “Mounting the UV Head”.
2. Verify that the power supply unit’s AC supply cord is connected to a properly grounded AC outlet.
3. If your power supply has a circuit breaker, switch it to the “ON” position.
4. Turn the main power switch of the power supply to the “ON” position and check the fan for airflow.
5. The LED indicator on the UV LED Head will flash green during “boot-up” and change to a steady green
indicating UV LED Head is ready for use. It is recommended to wait for 1 minute from “cold state” to
“ready state” before applying UV power to the Head. For more information about the indicators, see
Section 7.1, “Understanding the LED Indicators”.
After turning on UV power, the system will reach a fully stable operating temperature in 2-3 minutes. Caution –
the UV LED Head can become very hot, avoid handling until the UV LED Head has cooled (approx. 5 min) or
use protective gloves.
Before disconnecting any cables, power down the UV LED Head using the PLC
controller and turn off the power supply. (Note: the cooling fan may take up to 10
seconds to stop).

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
9
035-00589R Rev5
5Mounting the UV Head
**WARNING**
Do not block the air intake or the exhaust fans for the UV LED module's cooling
system. Ensure that both intake and exhaust vents located on the LED heads have
at least 2 inches (5cm) of clearance to allow sufficient air flow.
The UV LED Head weights can be found in Section 10.2
The UV LED Head has four mounting holes on the back of the unit, M4 X 7mm deep. Refer to Figure 3.
For optimal performance, do not obstruct the air exhaust and air intake on the unit.
For detailed mechanical drawings, please refer to:
http://www.excelitas.com/Pages/Product/OmniCure-AC-2-Series.aspx
**CAUTION**
The threaded mounting holes incorporate a blind configuration; ensure that the
appropriate length of mounting hardware is used. Attempting to install over-
length mounting screws could damage the threaded mounting holes and internal
components.

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
10
035-00589R Rev5
6Connecting the UV LED Head
6.1 Interfacing with the PLC
PLC Input Signal Requirements
Digital
Analog
Input
Voltage: 0 –24V
Current: 1 –30mA
Voltage: 0 –5V
Current: 500uA
Output
Voltage: 0 –5V
Current: 2.5mA (max.)
PLC Connector Pin-Out
Figure 5 PLC Connector (looking at UV Head).
Refer to chart below for the pinout on the AC2 system. The connector type used is
Connector: JST S18B-PUDSS-1
Mating Connector: JST PUDP-18V-S
Pin No.
Signal Name
Description
1
General Fault
0.0 –0.4V –General Fault
2.4V –5.0V –No Fault
2
Temperature Fault
0.0 –0.4V –Temperature Fault
2.4V –5.0V –No Fault
3
Door Lock
0.0 –0.4V –Enable
Open - Disable
4
VCC
4.9V to 5.1V reference voltage.
5
Intensity
<~0.4V - Off
~0.4V-1.0V –20%
1.0V –20%
5.0V –100%
6
PLC Ground
Reference ground for PLC signals.
7
LED on
0.0 –0.4V –Indicates LEDs are off .
2.4V –5.0V –Indicates LEDs are on.
8
Enable
0.0 –0.4V –Turns LEDS off.
2.4 –24.0V –Turns LEDS on.
9
TX
RS232
10
RX

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
11
035-00589R Rev5
Pin No.
Signal Name
Description
11
+
Input +48 V;
12
-
13
+
14
-
15
empty
Empty pin.
16
empty
Empty pin.
17
Chassis Ground
18
Chassis Ground
Table 1 PLC Connector Pin Out
6.2 Integrating Monitoring with External Circuitry
All inputs and outputs from the PLC interface are opto-isolated. The digital outputs are implemented using NPN
logic. The equivalent circuit is shown in Figure 6 below
Figure 6 PLC digital output equivalent circuit

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
12
035-00589R Rev5
7Using the LED Head
The peak wavelength of the UV LED Head is 395nm +/- 5nm.
For all models, adjusting the UV LED Head intensity can be actuated by an external controller via the PLC
interface. Refer to Section 6.1 for Pin-Outs.
Input voltage vs. desired intensity; 5V = 100% and 1V = 20%. A minimum voltage of 1V is required for light
source operation.
Note: The light source will maintain a 20% intensity when the input voltage is in the range of ~0.5-1V. If the
input voltage is below this, the light source will turn off.
Ensure the UV LED Head indicator is illuminated to a steady green before applying UV power to the head.
The UV LED Head indicator will illuminate to a steady amber indicating UV is on. When UV is off, the
indicator will revert back to a steady green indicating UV is off.
The UV LED Head is capable of responding to PLC control signals in less than 0.2 seconds.
7.1 Understanding the LED Indicators
LED Indicator
Condition
Steady green
System Ready; no critical faults
Steady amber
UV LED turned ON
Steady red
Critical fault
Temperature Fault
LED Fault
System Error
Slow flashing green
POST and Initialization
Slow flashing red
Major or critical fault
Slow flashing amber
UV LED ON with major fault
Fast flashing green
Warranty status - operating hours is < 9000
Fast flashing amber
Warranty status - operating hours = between 9,000 and 10,0000
Fast flashing red
Warranty status - operating hours is >10000
Table 2 LED Indicator Status (UV LED Head)
Note: To clear a fault or alarm signal, either cycle power to the LED Head or if connected to the PLC2000,
press the Clear Fault button
Caution: Routine maintenance should only be completed by a user qualified personnel to avoid risk of injury to
the end user. No user serviceable components are located within the power supply or UV LED Head
enclosures.
7.2 Fault Status
PLC Output
LED Fault: LED module fails to turn on.
Thermal Fault that includes:
LED module temperature is over the maximum limit.
LED module temperature is lower than the minimum limit or open circuit.
Internal Fault.
Ensure air intake and exhaust are unobstructed and filter is unclogged. Refer to Section 9.4

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
13
035-00589R Rev5
8Troubleshooting
8.1 Symptoms and Possible Causes
Service to be completed by qualified Excelitas Technologies personnel only!
Always wear optical safety glasses while troubleshooting. Never put hands or
fingers in front of the lens. Serious personal injury may result.
Do not place any potentially combustible materials (e.g. paper, card, etc.) in
front of the LED Head. Risk of fire and damage to the UV LED Head may result.
If the system fails to power up:
Make sure the AC power cord is securely plugged into a functional AC outlet and into the AC inlet on
the power supply unit.
Make sure that the circuit breaker on the power supply unit is not tripped. If so, reset breaker.
Make sure all cable connections (power supply to UV LED Head) are secure.
Ensure that the power supply is switched on and the green LED indicator on the front panel is lit.
If the system powers up but experiences a thermal fault during operation:
Ensure UV Head is installed with adequate clearance around intake and exhaust ports.
Ensure intake air filter is not clogged or obstructed.
If filter is clogged, either clean with compressed air or replace with a new filter insert.
If the system powers up but does not emit UV:
Make sure the door lock electrical loopback on the PLC is installed properly.
Ensure that the voltage levels on pins 3, 5 and 8 of the PLC interface match the logic required to enable
the LEDs.
Check the visual indicator for signs of a fault.
If a fault condition has been detected:
Attempt to clear the fault by cycling power to the LED Head or by pressing the “Clear Fault” button on
the PLC 2000 controller.
If the system exhibits a fault condition with a slow-flashing red:
Power-cycle the UV Head to clear.
If the light intensity is too low:
Make sure the input voltage is at least 46V (input voltage to the Head for the purposes of powering the
head is typically 48V (46-50V DC)).
Clean the optical window of the UV LED Head as described in Section 9.3, “Cleaning the LED Head”.
Verify that the intensity level of the UV LED Head is set to the correct level, using the PLC Controller.
If problems persist beyond these troubleshooting points, please contact Excelitas Technologies Service
Department (refer to Section 12, “Contact Information”).

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
14
035-00589R Rev5
9Care and Maintenance
Note: Excelitas Technologies recommends incorporating the cleaning of the optical window into the
user/operator cleaning and maintenance schedule.
9.1 Cautions and Handling
Caution: Routine maintenance should only be completed by qualified personnel to avoid risk of injury/electrical
shock to the end user. No user serviceable components are located within the UV LED Head
enclosure.
Warning: Use UV radiation eye and skin protection during servicing if access to the UV LED modules is
required during operation.
Risk Group 3 (IEC62471)
WARNING: UV emitted from this product. Avoid eye and skin exposure to unshielded product.
CAUTION: Possibly hazardous optical radiation emitted from this product. Do not stare into operating lamp.
CAUTION UV: Hazardous visible radiation is emitted from this product. Eye or skin irritation may result
from exposure. Use appropriate shielding.
Ensure main power supply is disconnected prior to making any changes to cabling configurations.
Operate the unit in a well-ventilated area with at least 5 inches (12cm) clearance on both sides of the system
power supply unit for proper air flow. Ensure that both intake and exhaust vents located on the LED heads have
at least 5inches (12cm) of clearance to allow sufficient air flow.
Avoid physical shocks or jarring of the LED Head, especially while the unit is operating.
When necessary, clean the optical window of the UV LED Head using an optical cleaning solution. Refer to
Section 9.3, “Cleaning the LED Head”.
The outer lens frame of the UV LED Head includes an optical window assembly. Improper handling and
cleaning practices can damage polished surfaces or coatings which are utilized in this optical window. Note that
damage to the surface of the glass or coating can degrade the unit’s performance. Proper handling and cleaning
technique is very important. Below are the recommended procedures for cleaning of the OmniCure® UV LED
Head optical window.
Always handle the UV LED Head by the metal enclosure; never touch the optical window with your fingertips.
The moisture or oils on your fingertips can damage the coating of the lens window. Fingerprints left on an
optical surface for an extended period of time, can become a permanent stain. Even if you are wearing gloves,
avoid touching the optical surface.
Never handle the optical window with metal implements or tweezers.
Do not place the UV LED heads lens assembly onto a hard table-top surface; this can cause scratches in the
window surface.
To store UV LED heads, wrap them individually in a clean, lint free bag and store in a safe place.
Never store unwrapped LED Heads together in a box or bag, as they may become damaged if they come in
contact with each other.

OmniCure® AC2 Series
UV Curing Solutions
http://www.excelitas.com/omnicure
Excelitas Canada Inc. 2015
All rights reserved
035-xxxxxR, rev.1
15
035-00589R Rev5
9.2 Cleaning Materials
Lint-free lens tissue, lint-free cotton swabs, lint or powder-free gloves or finger cots.
An organic solvent, such as reagent-grade isopropyl alcohol, reagent-grade acetone, or lens cleaning
solution.
9.3 Cleaning the LED Head
**WARNING**
Do not attempt to open the enclosure of the LED head. Ensure power to the
power supply unit is OFF and the UV LED arrays are cool before attempting any
cleaning procedure.
Use protective gloves or finger cots suitable for the cleaning solution selected. Refer to the MSDS for guidance.
Turn off the UV LED head and keep the optical window, face down to prevent the solvent from seeping into the
window during the cleaning procedure.
Blow off dirt and dust with pressurized air on front glass surface.
Use a lens tissue folded into quarters or a lint-free cotton swab. Saturate the lens tissue or swab with organic
solvent as indicated in the cleaning materials section.
**CAUTION**
Before using any solvent, consult the manufacturer's Materials Safety Data
Sheets (MSDS) and your internal Health and Safety Advisor for proper handling
and storage.
Using a new saturated tissue; clean optical window by gently wiping the surface with a continuous stroke in one
direction.
Note: Never apply a dirty tissue or swab to the optical window of the UV LED Head.
Note: Never face the optical window upwards before the solvent has evaporated.
9.4 Cleaning the LED Head Air Intake
**CAUTION**
Ensure that the LED Head power cable is disconnected from the head assembly
and the UV LED Head is cool to the touch.
The air intake filter is located on the exterior of the LED Head (see Figure 2) and is removable for cleaning as
required. Remove the filter frame by gently prying the frame from the clip end. Next, remove the filter media
located within and clean with compressed air or the appropriate solvent as required.
Replace the filter and frame prior to powering up the LED Head.