Asymtek Century C-721 Series User manual

Asymtek
Century Series
Operations Manual
The hardcopypart number for this manual is 196034, Revision A.
The CD part number is 196035, Revision A.
To reorder this manual, please contact Asymtek, 1-760-431-1919.

Revision History
Revision Date Description Pages Affected
A 5/01 Initial Release All

NOTICE
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Asymtek provides this manual "as is," without warranty of any kind, either expressed or implied, including, but not
limited to, the implied warranties of merchantability and fitness for a particular purpose. Asymtek may make
improvements or changes in the product(s) or programs described in this manual at any time. These changes will be
incorporated in new editions of this publication.
Asymtek assumes no responsibility for the accuracy, completeness, sufficiency, or usefulness of this manual, or for
any problem that might arise from the use of the information in this manual.
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Asymtek
Headquarters 2762 Loker Avenue West
Carlsbad, CA 92008-6603
USA
Toll Free: 1-800-ASYMTEK (1-800-279-6835)
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Website: www.asymtek.com
Technical Support
Toll Free: 1-800-ASYMTEK (1-800-279-6835)
Asymtek®, Century®, DispenseJet®, Heli-flow™, and Fluidmove®are registered trademarks of Asymtek.
Microsoft®, Windows®, and Windows NT®are registered trademarks of Microsoft Corporation.
NER DOAL®and Diffuse On-Axis Light™ are registered trademarks of Northeast Robotics.
Pentium® is a registered trademark of Intel Corporation.
© Asymtek, 2001

i
Manual Conventions
Bold Text Bold text indicates a menu selection, button selection, switch position, label,
computer command, filename, file location, internet address or other information
that must be clicked on, typed or noted by the user.
[Bracketed Text] [Bracketed Text] indicates a key to press or a keyboard sequence, such as [Enter]
or [Alt + Tab].
WARNING! Safety Warning. This symbol will appear in a highlighted text block.
The information in the text block warns you about actions that could
cause serious bodily harm to the user.
CAUTION! Machinery and Software Caution. This symbol will appear in a
highlighted text block. The information in the text block warns you
about actions that could cause serious damage to the machinery
or software.
?NOTE This symbol appears next to a text block with information you must know before
proceeding, or with helpful information relating to text that precedes it.
TIP This symbol appears next to a text block with a timesaving or technique tip.
HELP This symbol appears next to a text block with instructions for error recovery.

ii
TABLE OF CONTENTS
1 GETTING STARTED ..............................................................................................1-1
Overview..............................................................................................................................................1-1
System Status......................................................................................................................................1-1
Safety...................................................................................................................................................1-1
Manuals Supplied ................................................................................................................................1-2
Which Manuals to Use.........................................................................................................................1-3
2 INTRODUCTION.....................................................................................................2-2
Overview..............................................................................................................................................2-2
Basic System Description....................................................................................................................2-2
System Features..................................................................................................................................2-2
3 SAFETY..................................................................................................................3-1
Overview..............................................................................................................................................3-1
Safety Precautions...............................................................................................................................3-1
Safety Warning Labels.........................................................................................................................3-3
Emergency Shutdown..........................................................................................................................3-6
Integrated Safety Systems...................................................................................................................3-8
ESD Precautions................................................................................................................................3-11
4 OPERATION...........................................................................................................4-1
Overview..............................................................................................................................................4-1
Theory of Operation.............................................................................................................................4-1
Operation .............................................................................................................................................4-1
Dispenser Operation............................................................................................................................4-4
Computer System ................................................................................................................................4-4
Specifications for Computer System....................................................................................................4-4
Gauges and Regulators.....................................................................................................................4-16
5 STARTUP/SHUTDOWN .........................................................................................5-1
Startup..................................................................................................................................................5-1
Machine Offsets Procedures................................................................................................................5-3
Shutdown.............................................................................................................................................5-7
6 TROUBLESHOOTING............................................................................................6-1
Software Troubleshooting....................................................................................................................6-1
System Troubleshooting ......................................................................................................................6-2
Testing System Repeatability ..............................................................................................................6-5
7 MAINTENANCE......................................................................................................7-1
Routine Maintenance...........................................................................................................................7-1
System Maintenance ...........................................................................................................................7-2
8 SYSTEM SPECIFICATIONS...................................................................................8-1
9 VISION SYSTEM....................................................................................................9-1
Overview..............................................................................................................................................9-1
Theory of Operation.............................................................................................................................9-2
Operation .............................................................................................................................................9-2
Adjustments for the Pattern Recognition System................................................................................9-2
Vision System Troubleshooting ...........................................................................................................9-2
Specifications for Pattern Recognition System....................................................................................9-4
10 HEIGHT SENSOR ................................................................................................10-1
Overview............................................................................................................................................10-1
Theory of Operation...........................................................................................................................10-1
Operation ...........................................................................................................................................10-1
Height Sensor Setup..........................................................................................................................10-1
Probe Adjustments for HS-Series......................................................................................................10-9

iii
Height Sensor Troubleshooting .......................................................................................................10-16
Specifications for HS Series RT.......................................................................................................10-17
11 NEEDLE SENSOR................................................................................................11-1
Overview............................................................................................................................................11-1
Theory of Operation...........................................................................................................................11-2
Operation ...........................................................................................................................................11-2
Needle Sensor Setup.........................................................................................................................11-2
Tactile Sensor....................................................................................................................................11-3
Needle Sensor Troubleshooting ........................................................................................................11-5
Specifications for Needle Sensor.......................................................................................................11-5
12 NEEDLE HEATER................................................................................................12-1
Overview............................................................................................................................................12-1
Theory of Operation...........................................................................................................................12-1
Operation ...........................................................................................................................................12-1
Temperature Controller, 4- or 8-Channel...........................................................................................12-4
Needle Heater Setup .........................................................................................................................12-4
Needle Heater Troubleshooting.........................................................................................................12-6
Specifications for 4- and 8-Channel Temperature Controllers and Needle Heater Element.............12-7
13 SPECIAL OPTIONS..............................................................................................13-1
Dual-Action Dispensing Head............................................................................................................13-1
Specifications for Dual-Action Dispensing Head ...............................................................................13-6
External I/O........................................................................................................................................13-7
Hour Meter.......................................................................................................................................13-11
Low Air Pressure Sensor .................................................................................................................13-12
Magnetic Fluid Level Sensor............................................................................................................13-14
14 CONVEYORS.......................................................................................................14-1
Overview............................................................................................................................................14-1
Theory of Operation...........................................................................................................................14-2
Operation ...........................................................................................................................................14-2
Conveyor Maintenance......................................................................................................................14-3
Conveyor Troubleshooting.................................................................................................................14-5
15 HEATERS.............................................................................................................15-1
Overview............................................................................................................................................15-1
Contact Heaters.................................................................................................................................15-1
Impingement Heaters.........................................................................................................................15-3
Theory of Operation...........................................................................................................................15-4
Operation ...........................................................................................................................................15-4
Heater Setup......................................................................................................................................15-7
Heater Troubleshooting ...................................................................................................................15-10
Specifications for Contact and Impingement Heaters .....................................................................15-12
GLOSSARY................................................................................................GLOSSARY-1
INDEX .................................................................................................................INDEX-1

iv
Table of Figures
Figure 2-1 C-721 Front View....................................................................................................................................2-2
Figure 2-2 Dispensing Area Close-up.......................................................................................................................2-3
Figure 2-3 Lower Cabinet.........................................................................................................................................2-4
Figure 2-4 Rear View................................................................................................................................................2-8
Figure 2-5 Rear View Close-Up................................................................................................................................2-9
Figure 3-1 Warning Labels, Front View....................................................................................................................3-4
Figure 3-2 Warning Labels, Rear View.....................................................................................................................3-5
Figure 3-3 EMO Location on Dispenser Control Panel.............................................................................................3-6
Figure 3-4 Optional Interlock Warning Tag...............................................................................................................3-9
Figure 3-5 Main Power Inlet and Main Power Circuit Breaker................................................................................3-11
Figure 4-1 Computer Faceplate................................................................................................................................4-3
Figure 4-2 Control Panel ..........................................................................................................................................4-6
Figure 4-3 Light Beacon.........................................................................................................................................4-12
Figure 4-4 Main Air and Conveyor Air Gauges and Regulators..............................................................................4-14
Figure 4-5 Fluid and Valve Pneumatic Fittings (Connections shown for DP-3000)................................................4-16
Figure 4-6 Fluid Pressure Gauges and Regulators................................................................................................4-17
Figure 4-7 Valve Pressure Gauges and Regulators...............................................................................................4-18
Figure 4-8 Digital Pressure Gauges .......................................................................................................................4-20
Figure 4-9 Digital Pressure Gauges .......................................................................................................................4-21
Figure 7-1 Water Trap..............................................................................................................................................7-3
Figure 7-2 Replacing the Purge Boot.......................................................................................................................7-5
Figure 7-3 Replacing Purge Station Cups................................................................................................................7-6
Figure 8-1 Vision and Dispensing Areas—Single Pump...........................................................................................8-3
Figure 8-2 Vision and Dispensing Areas—Dual-Action Pump..................................................................................8-4
Figure 9-1 Vision System .........................................................................................................................................9-2
Figure 10-1 Height Sensor Installation ...................................................................................................................10-4
Figure 10-2 Height Sensor Installation with Bracket Spacer...................................................................................10-4
Figure 10-3 Tactile Height Sensor..........................................................................................................................10-5
Figure 10-4 Height Sensor Configuration Dialog Box (FmNT)................................................................................10-7
Figure 10-5 Probe-to-Needle Alignment...............................................................................................................10-10
Figure 10-6 Gear Up (GU) Adjustment Locations.................................................................................................10-12
Figure 11-1 NSZ Series Needle Sensor.................................................................................................................11-1
Figure 11-2 Tactile Sensor Exposed......................................................................................................................11-2
Figure 12-1 HT-04..................................................................................................................................................12-2
Figure 12-2 HT-06..................................................................................................................................................12-3
Figure 12-3 HT-10N................................................................................................................................................12-3
Figure 12-4 HT-06 on a DV-6000 Pump with Luer Lock Fitting..............................................................................12-5
Figure 12-5 HT-10N on a DV-6000 Pump..............................................................................................................12-6
Figure 13-1 Dual-Action Dispensing Head for Century C-721................................................................................13-2
Figure 13-2 Dual-Action Dispensing Head with Fluid Pumps Detached.................................................................13-3
Figure 13-3 Top View, Cover Removed; External I/O Connectors .........................................................................13-7
Figure 13-4 Hour Meter........................................................................................................................................13-11
Figure 13-5 Low Air Pressure Sensor...................................................................................................................13-12
Figure 13-6 Magnetic Fluid Level Sensor.............................................................................................................13-14
Figure 14-1 Typical Single-Lane Conveyor Configuration (Contact Heaters).........................................................14-2
Figure 14-2 Typical Single-Lane Conveyor Configuration (Impingement Heaters).................................................14-3
Figure 15-1 Contact Heater....................................................................................................................................15-2
Figure 15-2 Impingement Heater............................................................................................................................15-3
Figure 15-3 C-721 Contact Heater Operation.........................................................................................................15-5
Figure 15-4 C-721 Impingement Heater Operation................................................................................................15-6
Figure 15-5 Contact Heater Configuration..............................................................................................................15-8
Figure 15-6 Tooling Mode Switch (Impingement/OFF/Contact) ...........................................................................15-11

Getting Started 1-1
1 Getting Started
Congratulations on your choice of a Century C-721 Series Advanced IC Encapsulation dispensing
system!
Overview
This manual is intended primarily as a reference for production operators. However, process engineers
and service technicians unfamiliar with Asymtek products may also find this manual useful as a general
introduction to the system.
The objective of this manual is to provide a general introduction to the Century Series dispensing system,
to identify all major system components, to explain the function of all major system components and to
provide basic operation instructions.
This section helps you check the material that arrived with your system and gets you started using the
documentation.
System Status
The Century Series dispensing system is completely installed and tested onsite by Asymtek Technical
Support. To ensure that the system is in good working order, only Asymtek technicians should be
allowed to install it or move it.
Safety
Operation of the Century Series dispensing system involves heat, air pressure, pneumatic devices,
electrical power, and may involve the use of hazardous materials. Read the enclosed product literature in
its entirety before attempting any system or component operation. It is essential for every person working
on or around the dispensing system to fully understand the hazards, risks and safety precautions
associated with operating the system. When properly used, the dispensing system is safe and trouble-free.
Consult the Material Safety Data Sheet (MSDS) for all fluids used with the dispensing system for proper
use and disposal instructions and precautions.

Getting Started1-2
Manuals Supplied
Your Century Series dispensing system arrives with manuals for installation and operation of major
system components and software. For some system components, you may receive Original Equipment
Manufacturer (OEM) manuals. Generally, these OEM manuals are only needed for reference and
advanced troubleshooting. Consult only Asymtek manuals unless directed to do otherwise by Asymtek
Technical Support or by Asymtek documentation.
Below is a sample list of Asymtek manuals that may be shipped with a Century Series system
configuration. OEM manuals supplied will vary with the options installed on your system:
•Century Series C-721 Operations Manual
•Fluidmove for Windows NT User Guide
•Fluid Pump Installation and Operations Manual (specific to your pump)
•Best Dispensing Practice for Using the DJ-2100 to Dispense Surface Mount Adhesive (optional)

Getting Started 1-3
Which Manuals to Use
Below is a guide to when each manual will be most useful to you. The level of the intended user is also
indicated.
Table 1-1 Use of Manuals
Manual When Used Intended User
Century C-721 Operations Manual For Operation Instructions, Operator-performed
Maintenance and Service
Operators, Process
Engineers, and Service
Technicians
Fluidmove for Windows NT User Guide For Operation, Programming,
Software Troubleshooting
Operators, Programmers,
and Process Engineers

Introduction 2-1
2 Introduction
Overview
The Century Series Advanced Integrated Circuit Encapsulation (AICE) systems are designed to solve the
diverse needs of the emerging flip chip underfill and IC encapsulation market. The Century Series C-721
Dispensing System provides a modular approach to hardware, software, and factory integration.
Advanced platform architecture provides precision control for reliable fluid delivery, with closed-loop
thermal management, multi-zone substrate heating, and flexible material handling capabilities.
The Century C-721 system features a SMEMA-compatible material handling system that can be
configured for a variety of substrate types and sizes. Process carriers, lead frames, and multiple substrate
carriers are all supported. Optional contact or impingement part heaters ensure reliable and flexible
substrate heating.
An integrated vision system for flip chip corner detection automatically corrects any workpiece
misalignment. Asymtek’s exclusive Fluidmove for Windows NT (FmNT) software controls all machine
parameters and events within a familiar Windows environment. Key safety features meet Common
European (CE) standards.
Basic System Description
All Century Series dispensing systems begin with a standard platform. Modular components are added,
allowing the system to be configured for common AICE applications. Your system was configured for
your application at the Asymtek factory prior to shipping. Detailed descriptions of all features are found
later in this section.
Basic Platform
•Computer system •Vision system
•Light beacon •Vision system lighting
•Motorized conveyor width adjust •Fluid pump quick refill
•Vacuum-operated purge station •O-ring conveyor
•Fluidmove for Windows NT software •Two-station lift tables
•Needle sensor •Temperature controller
Optional Modular Components
•Part heaters (contact or impingement) •Dual-action dispensing head
•Fluid dispensing pumps •Low air pressure sensor
•Needle heater •Low fluid sensor
•Height sensor •Hour meter
System Features
The figures in this section show views and features of the dispensing system. Callouts locate major
components, options, and switches seen in each illustration. Paragraphs following the views briefly
describe each feature.

Introduction2-2
System Front Views
REYENCE
AP-33K
OUT2
Century
DP2-42N
OUT1
0-ADJ
0SUNX
MODE
OUT2
1MPa
Fluid Pressure
Fluid 2Pressure
AN
ORDSONCOMPANY
ZA
xis
Interlock
Interlock
RecoveryDispenser
StatusV1
V2
Valve
Status
ValvePressureValve2Pressure
Reset
SERIES
Valve
Reset
Find
Home
Teach
Dispenser
Conveyor
Pause
Conveyor
Status
Reset
Program
9
8
7
6
5
4
3
2
1
0
Abort
Start
Pause
DP2-42N
OUT1
0-ADJ
0SUNX
MODE
OUT2
1MPa
DP2-42N
OUT1
0-ADJ
0SUNX
MODE
OUT2
1MPa
DP2-42N
OUT1
0-ADJ
0SUNX
MODE
OUT2
1MPa
1
2
3
4
1
2
3
4
IMPINGMENT
TOOLING
CONTACT
TOOLING
STATION1STATION2
OFF
MENUSELECT
PV630
anoiew
O
F
F
O
F
F
Item Description
1 Computer Monitor
2 Control Panel
3 Light Beacon
4 Interlock Keyswitch
5 EMO Button
6 Utility Drawer
7 Lower Front Cabinet
8 Leveler (foot pad)
9 Dispensing Work Area
10 Keyboard/Mouse Tray
11 Conveyor
Figure 2-1 C-721 Front View
10
1
7
8
9
5
3
4
2
6
11

Introduction 2-3
Item Description
1 Fluid Pressure Regulator
2 Fluid 2 Pressure Regulator
3 Grounding Strap Connector
4 Fluid Pump
5 Syringe
6 Valve Pressure Regulator
7 Valve 2 Pressure Regulator
8 Over-the-Board Sensor Amplifier
9 Impingement Heat Flow Controls (shown), Two- or Three-Station
10 Tooling Mode Switch (Impingement/OFF/Contact)
11 Purge Station
12 Needle Sensor
13 Tactile Needle Sensor
14 Over-the-Board Fiber Optic Sensor
15 Stop Pin
16 Contact Heaters (shown) or Impingement Heaters
17 Vision System and Light Source
Figure 2-2 Dispensing Area Close-up
16 17
2
1013 11
73 6
1
9
4 5
15
14
12
8

Introduction2-4
Item Description
1 Computer System
2 Temperature Controller, 4- or 8-Channel
3 Heat Station Timers
4 Conveyor Controller Module
Figure 2-3 Lower Cabinet
1
2
4
3

Introduction 2-5
Front View Features
Below are short descriptions of the various parts and modules of the system (shown in Figure 2-1 through
Figure 2-3) and their functions. Detailed operational instructions for some of these features are treated in
other sections.
Computer System (computer, monitor, keyboard, mouse)
The Computer System is used to create and run dispensing programs with the Asymtek dispensing
software Fluidmove for Windows NT (FmNT).
Contact or Impingement Part Heaters
The C-721 dispensing system is factory-equipped with two independently or three configured substrate
heating stations, which provide complete thermal control during all phases of the dispensing process.
Heater temperature is controlled by the FmNT dispensing software. The two types of heaters, or tooling,
currently available for the C-721 system use either contact or impingement heating. Contact tooling
employs vacuum fixturing to hold the part to the heater. Impingement heat tooling uses positive air
pressure flowing through the unit to heat the part.
Control Panel
The Control Panel mainly uses membrane buttons. The Panel is organized to control certain
programming and run functions via three functional areas: Download Program Control, Motion Control,
and Safety Interlock Control. From the Panel you can move the Dispensing Head, move the conveyor
belts and rear rail, enable the Safety Interlock system, make an emergency stop, check dispensing status,
and adjust valve controls.
Conveyor
The specific type of conveyor installed in your system may be custom for your application. The standard
configuration for the Century C-721 is a SMEMA-compatible o-ring conveyor. The conveyor is
controlled via the Control Panel and through the Conveyor Controller Module and FmNT software.
Conveyor Controller Module
The Conveyor Controller module monitors the SMEMA interface and controls conveyor indexing
operations. All conveyors are SMEMA-compatible. The inputs and outputs are used for sensors, stop
pins, lift tables, and operation of the conveyor. For more information on the conveyor, see the Operation
section of this manual.
Dispensing Area
The Dispensing Area refers to the area in which dispensing operations are performed. The dimensions of
the Dispensing Area of your system will vary depending on the type and number of options installed
within it.
EMO button
In emergencies, this large, red “mushroom” button shuts down power to the Control Panel, the dispensing
mechanics, conveyor, and temperature controller. However, the EMO button does NOT shut down power
to the computer or the monitor.
Fluid Pressure Gauges and Regulators
The Fluid Pressure Gauges indicate how much air pressure is supplied to the syringes. The Fluid Pressure
Regulators are located underneath the front hood of the system. See the appropriate fluid pump manual
for the recommended setting for your pump.

Introduction2-6
Fluid Pump
The fluid pump (also referred to as a “valve” or “jet”, depending on the type) dispenses the fluid onto the
part. It is mounted on the Dispensing Head, and holds the syringe of dispensing fluid. For more
information, see the appropriate fluid pump manual. Popular models include the DP-3000 Series Pump,
DV-6000 Series Pump, DV-7000 Series Heli-flow pump, and DJ-2100 Series DispenseJet valve.
Grounding Strap Connector
The operator’s grounding strap plugs into this connection to prevent Electrostatic Discharge (ESD).
Heat Station Timers
The heat station timers, located on the face of the 4- or 8-channel temperature controller, can be
programmed to pause a part in the pre-heat or post-heat zone for a specified amount of time. Generally
these timers are set up at the Asymtek factory. Parameters for checking setpoint temperatures prior to
dispensing are set through FmNT. See the Fluidmove for Windows NT User Guide for details.
Impingement Flow Controls, Two- or Three-Station
The impingement flow controls supply air directly and constantly to the impingement heaters.
Interlock Keyswitch
Activates or deactivates the Interlock Doors. For detailed information about the Interlock, see the Safety
section of this manual.
Levelers
The Levelers are adjusted during installation and should not need attention unless the system is moved to
a new location. To protect the dispensing system from moving during an earthquake, the levelers can be
anchored to the floor with screws.
Light Beacon
The Light Beacon is a warning device for the operator. The Light Beacon signals a dispensing status
condition by displaying a colored light and/or issuing an audible tone (Table 3-3).
Lower Front Cabinet
Contains the Computer, the 4- or 8-Channel Temperature Controller, Heat Station Timers, and the
Conveyor Controller Module.
Needle Sensor
The Needle Sensor records the XYZ position of the needle. The location information is sent to the FmNT
software.
Over-the-Board Fiber Optic Sensor
An Over-the-Board Fiber Optic Sensor, or part sensor, detects the presence of a board or carrier and
sends a message to the FmNT software. The information is transferred through the Conveyor Controller
Module to the system computer and used for SMEMA handshaking as parts move through the dispensing
system. Depending upon system configuration, there may be as many as three part sensors located along
the length of the rear conveyor rail.
Over-the-Board Sensor Amplifier
The Over-the-Board Sensor Amplifier works with the Over-the-Board Fiber Optic Sensor to detect the
presence of a board or carrier. Adjustments to the sensor system are made with the amplifier.

Introduction 2-7
Purge Station
The Purge Station is a small reservoir that contains a disposable plastic cup. A generator produces a
vacuum inside the reservoir. The dispensing nozzle or needle is inserted into the purge boot on the purge
station lid, where the vacuum removes residual fluid and cleans the nozzle or needle tip.
Stop Pin
Stop pins are pneumatic devices used to stop parts at each station.
Syringe/Fluid Cartridge
The syringe or fluid cartridge contains the fluid to be dispensed and is packaged in either small syringes
or long cartridges by the material supplier. Century Series dispensing systems can accommodate fluid
syringes of 5, 10, and 30 cc (0.17, 0.34, 1.01 fl oz), and fluid cartridges of 74 and 177 cc (2.5 and 6 fl oz).
The fluid is shipped with a Material Safety Data Sheet (MSDS), which provides handling and safety
instructions.
Temperature Controller
Temperature controllers are available in two types: 4-channel and 8-channel. The 4-channel unit can
control two part heaters, a Resistance Temperature Detector (RTD) device and one needle heater. The 8-
channel unit can control three part heaters, an RTD device and two needle heaters.
Tooling Mode Switch
With the Tooling Mode Switch, you can direct vacuum to the contact heat tooling, positive air pressure to
the impingement heat tooling, or turn off the air (Impingement/OFF/Contact).
Valve Pressure Gauges and Regulators
The Valve Pressure Gauges indicate the air pressure supplied to the fluid pumps. The Valve Pressure
Regulators are located underneath the front hood of the system. See the appropriate fluid pump manual
for the recommended setting for your pump. The maximum recommended setting is 621 kPa (90 psi).
Valve ON/OFF Fluid Pressure Air Lines
These are ports mounted on the right side of the Dispensing Head. The top row of three ports is for Valve
1; the bottom row of three ports is for Valve 2. The Valve ON, Valve OFF and Syringe airlines connect
to these ports. Air pressure for all three ports is set with the Valve and Fluid Pressure Gauges and
Regulators.
Vision System and Light Source
The vision system consists of vision processing cards located inside the computer, and the camera and
light source, which are mounted on the Dispensing Head. The light source may be a dual on-axis unit or a
single LED light ring.

Introduction2-8
System Rear View
Item Description
1 Main Power Circuit Breaker
2 Main Power Inlet
3 Ventilation Duct; diameter is 100 mm (3.9 inches)
4 Facility Air Inlet
5 Air Filter/Water Trap
6 Rear Lower Access Panel
7 Valve 1/Valve 2 Reverse Potentiometers (under service shroud)
8 Service Shroud
Figure 2-4 Rear View
1
2
3
4
5
6
78