Novanta v40 User manual

ENGINEERED BY SYNRAD
v40 Laser
User Manual

IMPORTANT INFORMATION PAGE |2
Table of Contents
Important Information ......................................................................................................................................................................7
Trademark & Copywrite ....................................................................................................................................................................9
Warranty Information .......................................................................................................................................................................9
Sales, Application & Support ...........................................................................................................................................................10
Sales & Application ..........................................................................................................................................................................10
Customer Service.............................................................................................................................................................................10
Technical Support ............................................................................................................................................................................10
Reference Materials ........................................................................................................................................................................11
EU Headquarters .............................................................................................................................................................................11
Getting started ................................................................................................................................................................................12
Introduction.....................................................................................................................................................................................12
v40 Nomenclature ...........................................................................................................................................................................12
Unpacking ........................................................................................................................................................................................13
Incoming inspection ........................................................................................................................................................................13
Packaging guidelines........................................................................................................................................................................13
Inventory .........................................................................................................................................................................................14
Contents description .......................................................................................................................................................................15
Mounting .........................................................................................................................................................................................15
Fastening from above......................................................................................................................................................................16
Fastening from below......................................................................................................................................................................16
Connecting.......................................................................................................................................................................................17
Water-cooled connections ..............................................................................................................................................................17
OEM air-cooled connections (SAB models) .....................................................................................................................................21
Electrical connections ......................................................................................................................................................................23
Control connections ........................................................................................................................................................................25
Laser Safety Introduction ................................................................................................................................................................26
Hazard Information .........................................................................................................................................................................27
Terms ...............................................................................................................................................................................................27
General hazards...............................................................................................................................................................................29
Disposal............................................................................................................................................................................................30

IMPORTANT INFORMATION PAGE |3
Other hazards ..................................................................................................................................................................................30
Additional laser safety information .................................................................................................................................................31
V40 label locations...........................................................................................................................................................................32
Compliance ......................................................................................................................................................................................33
Center for Devices and Radiological Health (CDRH) requirements .................................................................................................33
European Union (EU) requirements RoHS compliance ...................................................................................................................35
Operation.........................................................................................................................................................................................39
Keyswitch controls and indicators...................................................................................................................................................39
OEM v40 front panel .......................................................................................................................................................................39
OEM v40 rear panel.........................................................................................................................................................................40
OEM controls and indicators ...........................................................................................................................................................41
Initial start-up ..................................................................................................................................................................................42
With a UC-2000 Controller ..............................................................................................................................................................42
Initial start-up (continued) ..............................................................................................................................................................42
Without a UC-2000 Controller.........................................................................................................................................................45
Technical reference .........................................................................................................................................................................47
Technical overview ..........................................................................................................................................................................47
Laser tube ........................................................................................................................................................................................47
Optical resonator.............................................................................................................................................................................47
RF power supply ..............................................................................................................................................................................48
Optical setup....................................................................................................................................................................................49
Controlling laser power ...................................................................................................................................................................50
Control signals .................................................................................................................................................................................50
Controlling laser power ...................................................................................................................................................................51
Operating modes .............................................................................................................................................................................53
User I/O connections .......................................................................................................................................................................55
User I/O connection summary.........................................................................................................................................................55
Input/output signals ........................................................................................................................................................................57
Output signals..................................................................................................................................................................................62
Sample I/O circuits...........................................................................................................................................................................64
Sample outputs................................................................................................................................................................................66
DB-9 connections (SAB models only)...............................................................................................................................................67

IMPORTANT INFORMATION PAGE |4
Integrating safety features ..............................................................................................................................................................69
Keyswitch functions.........................................................................................................................................................................70
Shutter functions .............................................................................................................................................................................71
v40 general specifications ...............................................................................................................................................................72
v40 package outline drawings .........................................................................................................................................................74
v40 package outline drawings (continued)......................................................................................................................................75
v40 package outline drawings (continued)......................................................................................................................................76
V40 packaging instructions drawing................................................................................................................................................77
Maintenance & Troubleshooting.....................................................................................................................................................78
Maintenance....................................................................................................................................................................................78
Disabling the v40 laser.....................................................................................................................................................................78
Daily inspections..............................................................................................................................................................................78
Storage/shipping .............................................................................................................................................................................79
Cleaning optical components ..........................................................................................................................................................79
Cleaning guidelines..........................................................................................................................................................................80
Required cleaning materials ............................................................................................................................................................81
Cleaning optics.................................................................................................................................................................................81
Troubleshooting ..............................................................................................................................................................................82
Operational flowchart .....................................................................................................................................................................84
Functional block diagram ................................................................................................................................................................85
Status LED’s .....................................................................................................................................................................................86
Laser faults.......................................................................................................................................................................................88
Resetting faults................................................................................................................................................................................88
Beam delivery optics .......................................................................................................................................................................93
Index ................................................................................................................................................................................................96

IMPORTANT INFORMATION PAGE |5
Table of Figures
Figure 1-1 v40 shipping box contents..............................................................................................................................................14
Table 1-1 v40 ship kit contents........................................................................................................................................................14
Figure 1-2 Fastening from above.....................................................................................................................................................16
Figure 1-3 Fastening from below.....................................................................................................................................................16
Table 1-2 Dew point temperatures .................................................................................................................................................19
Figure 1-4 cooling connections........................................................................................................................................................20
Figure 1-5 Recommended v40 cooling fan locations.......................................................................................................................21
Figure 1-6 Rear-mounted cooling....................................................................................................................................................22
Figure 1-7 DC-5 power supply .........................................................................................................................................................23
Figure 2-1 V40 Hazard label locations. ............................................................................................................................................32
Table 2-1 Class 4 safety features. ....................................................................................................................................................36
Table 2-2 European Union Directives. .............................................................................................................................................37
Figure 2-2 Declaration Document....................................................................................................................................................38
Figure 3-1 OEM v40 front panel controls and indicators.................................................................................................................39
Figure 3-2 V40 OEM v40 rear panel controls and indicators...........................................................................................................40
Figure 3-5 OEM v40 side panel controls and indicators ..................................................................................................................41
Figure 4-1 v40 beam characteristics................................................................................................................................................48
Figure 4-2 “Flying optics” beam path ..............................................................................................................................................49
Table 4-1 Assist gas purity specifications ........................................................................................................................................50
Figure 4-3 Representative v40 waveforms ......................................................................................................................................51
Figure 4-4 PWM Command signal waveform ..................................................................................................................................52
Table 4-2 PWM Command signal levels ..........................................................................................................................................53
Table 4-3 User I/O pin descriptions .................................................................................................................................................55
Table 4-3 User I/O pin descriptions (continued) .............................................................................................................................56
Figure 4-5 User I/O connector pinouts ............................................................................................................................................57
Figure 4-6 Auxiliary power supply wiring ........................................................................................................................................58
Figure 4-7 Quick Start Plug wiring diagram .....................................................................................................................................60
Figure 4-8 Input equivalent schematic ............................................................................................................................................61
Table 4-4 Input circuit specifications...............................................................................................................................................61
Figure 4-9 Output equivalent schematic .........................................................................................................................................63
Table 4-5 Output circuit specifications ............................................................................................................................................64
Figure 4-10 Customer-supplied interlock ........................................................................................................................................64
Figure 4-11 Customer-supplied interlock, negative voltage............................................................................................................64
Figure 4-12 PLC driven interlock signal............................................................................................................................................65

IMPORTANT INFORMATION PAGE |6
Figure 4-13 Multiple PLC driven inputs ...........................................................................................................................................65
Figure 4-14 output driving warning lamp ........................................................................................................................................66
Figure 4-15 output driving relay ......................................................................................................................................................66
Figure 4-16 output driving PLC input module..................................................................................................................................67
Figure 4-17 DB-9 connector pinouts................................................................................................................................................68
Table 4-6 Side-mounted DB-9 pin descriptions ...............................................................................................................................68
Table 4-6 Side-mounted DB-9 pin descriptions (continued) ...........................................................................................................69
Table 4-7 v40 general specifications................................................................................................................................................72
Table 4-7 v40 general specifications (continued)............................................................................................................................73
Figure 4-18 Water-cooled v40 package outline and mounting dimensions....................................................................................74
Figure 4-19 Fan-cooled v40 package outline and mounting dimensions ........................................................................................75
Figure 4-20 Air-cooled v40 (SAB model) package outline and mounting dimensions.....................................................................76
Figure 4-21 v40 packaging instructions ...........................................................................................................................................77
Table 5-1 Required cleaning materials. ...........................................................................................................................................81
Figure 5-1 v40 operational flowchart. .............................................................................................................................................84
Figure 5-2 v40 functional block diagram .........................................................................................................................................85
Table 5-2 Status signals ...................................................................................................................................................................86
Table 5-3 Interlock Open condition .................................................................................................................................................87
Table 5-4 Over Temperature condition ...........................................................................................................................................87
Table 5-5 Shutter Open condition ...................................................................................................................................................87
Table 5-6 Laser faults.......................................................................................................................................................................88

IMPORTANT INFORMATION PAGE |7
Important Information
For your protection, carefully read these instructions before installing and operating the scan
head.
Retain these instructions for future reference.
Novanta reserves the right to update this user manual at any time without prior notification.
If product ownership changes, this manual should accompany the product.
DANGER:Indicates a hazardous situation which, if not avoided, will result in serious injury or death.
Its use should be limited to the most extreme situations.
WARNING: Indicates a hazardous situation which, if not avoided, could result in serious injury or
death.
CAUTION: Indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
Important: Indicates information considered important but not directly hazard related (e.g.,
security, hygiene, or equipment or property damage).
Safety Labels
DANGER:Laser radiation can cause severe retinal and corneal burns, burns on the skin, and may
pose a fire risk. To avoid injury and reduce risk of fire, please follow the control measures and
safety guidelines provided by the laser’s manufacturer, and those established by your Laser
Safety Officer (LSO), Radiation Safety Officer (RSO), or safety department of your business or
institution.
ESD Warning
MOVIA scan heads are electrostatic discharge-sensitive devices (ESD). The equipment should
remain sealed until the user is located at a proper static control station; improper handling could
cause damage to these electronics.
A proper static control station should include:
A soft grounded conductive tabletop or grounded conductive mat on the tabletop.
A grounded wrist strap with the appropriate (1 MΩ) series resistor connected to the tabletop mat
and ground.
An adequate earth ground connection, such as a water pipe or AC ground.
Conductive bags, trays, totes, racks, or other storage.
Properly grounded power tools.
Personnel handling ESD items should wear ESD protective garments and ground straps.
Important: Equipment returned to the factory must be shipped in anti-static packaging.
Important: Customers assume all responsibility for maintaining a laser-safe working environment.
Original equipment manufacturer (OEM) customers assume all responsibility for CDRH (Center
for Devices and Radiological Health) certification.

IMPORTANT INFORMATION PAGE |8
Customer Support
Before contacting Novanta for assistance, review appropriate sections in the manual that may
answer your questions.
After consulting this manual, please contact one of our worldwide offices between 9 AM and 5 PM
local time.
Americas, Asia Pacific
Novanta Headquarters, Bedford, USA
Phone: [phone]
Email: [e-mail]
Europe, Middle East, Africa
Novanta Europe GmbH, Wackersdorf, Germany
Phone: [phone]
Email: [e-mail]
Milan, Italy
Phone: [phone]
Email: [e-mail]
China
Novanta Sales & Service Office, Shenzhen, China
Phone: [phone]
Email: [e-mail]
Novanta Sales & Service Office, Suzhou, China
Phone: [phone]
Email: [e-mail]
Japan
Novanta Service & Sales Office, Tokyo, Japan
Phone: [phone]
Email: photonics.japa[email protected]

TRADEMARK & COPYWRITE PAGE |9
Trademark & Copywrite
NOVANTA© and v40 lasers are registered trademarks of NOVANTA.
All other trademarks or registered trademarks are the property of their respective owners.
2019 by NOVANTA.
All rights reserved.
Warranty Information
This is to certify that v40 lasers are guaranteed by NOVANTA to be free of all defects in materials and
workmanship for a period of one year from the date of purchase. This warranty does not apply to any
defect caused by negligence, misuse (including environmental factors), accident, alteration, or im-proper
maintenance. We request that you examine each shipment within 10 days of receipt and inform
NOVANTA of any shortage or damage. If no discrepancies are reported, NOVANTA shall assume the
shipment was delivered complete and defect-free.
If, within one year from the date of purchase, any part of the v40 laser should fail to operate, contact the
NOVANTA Customer Service department at 1.800.NOVANTA1 (outside the U.S. call 1.425.349.3500) and
report the problem. When calling for support, please be prepared to provide the date of purchase, model
number and serial number of the unit, and a brief description of the problem. When returning a unit for
service, a Return Authorization (RA) number is required; this number must be clearly marked on the
outside of the shipping container for the unit to be properly processed. If replacement parts are sent to
you, then you are required to send the failed parts back to NOVANTA for evaluation unless otherwise
instructed.
If your v40 laser fails within the first 45 days after purchase, NOVANTA will pay all shipping charges to
and from NOVANTA when shipped as specified by NOVANTA Customer Service. After the first 45 days,
NOVANTA will continue to pay for the costs of shipping the repaired unit or replacement parts back to
the customer from NOVANTA. The customer, however, will be responsible for shipping charges incurred
when sending the failed unit or parts back to NOVANTA or a NOVANTA Authorized Distributor. In order
to maintain your product warranty and to ensure the safe and efficient operation of your v40 laser, only
authorized NOVANTA replacement parts can be used. This warranty is void if any parts other than those
provided by NOVANTA are used.
NOVANTA and NOVANTA Authorized Distributors have the sole authority to make warranty statements
regarding NOVANTA products. NOVANTA and its Authorized Distributors neither assumes nor
authorizes any representative or other person to assume for us any other warranties in connection with
the sale, service, or shipment of our products. NOVANTA reserves the right to make changes and
improvements in the design of our products at any time without incurring any obligation to make
equivalent changes in products previously manufactured or shipped. Buyer agrees to hold NOVANTA
harmless from any and all damages, costs, and expenses relating to any claim arising from the design,
manufacture, or use of the product, or arising from a claim that such product furnished Buyer by
NOVANTA, or the use thereof, infringes upon any Patent, foreign or domestic.

SALES, APPLICATION & SUPPORT PAGE |10
Sales, Application & Support
Novanta Sales and Support
NOVANTA® worldwide headquarters are located north of Seattle in Mukilteo, Washington. U.S.A. Our
mailing address is:
NOVANTA 4600 Campus Place Mukilteo, WA 98275 U.S.A.
Phone us at:
1.800.NOVANTA1 (1.800.796.7231)
Outside the U.S.:
+1.425.349.3500
Fax:
+1.425.349.3667
E-mail:
[e-mail]
Sales & Application
NOVANTA Regional Sales Managers work with customers to identify and develop the best CO2 laser
solution for a given application. Because they are familiar with you and your laser application, use them
as a first point of contact when questions arise. Regional Sales Managers also serve as the liaison
between you and our Applications Lab in processing material samples per your specifications. To speak
to the Regional Sales Manager in your area, call NOVANTA at 1.800. NOVANTA1.
Customer Service
For assistance with order or delivery status, service status, or to obtain a Return Authorization (RA)
number, contact NOVANTA at 1. 800.NOVANTA1 and ask to speak to a Customer Service representative,
or you can email us by sending a message to [e-mail].
Technical Support
NOVANTA Regional Sales Managers are able to answer many technical questions regarding the
installation, use, troubleshooting, and maintenance of our products. In some cases, they may transfer
your call to a Laser, Marking Head, or Software Support Specialist. You may also e-mail questions to the
Technical Support Group by sending your message to Novantatechsupport@ Novanta.com.

REFERENCE MATERIALS PAGE |11
Reference Materials
Your Regional Sales Manager can provide reference materials including Outline & Mounting drawings,
Operator’s Manuals, Technical Bulletins, and Application Newsletters. Most of these materials are also
available directly from the NOVANTA web site at http://www.Novanta.com.
EU Headquarters
For assistance in Europe, contact NOVANTA® European subsidiary, NOVANTA Europe, at:
©Novanta Distribution (USD) GmbH
Parkring 57-59
85748 Garching bei München,
Germany
Phone: [phone]
web: www.Novanta.com
E-mail: [e-mail]
For assistance in China, contact NOVANTA® at:
Novanta China Sales and Service Center
2401-J, Bak Building, Hi-tech Park, Nanshan District Guangdong, PRC 518057
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
web: www.Novanta.com

GETTING STARTED PAGE |12
Getting started
Use information in this section to prepare your v40 laser for operation. The
order of information presented in this chapter is the same as the order of tasks that you
need to perform. The best way to get your laser ready for operation is to start at Inventory
and work your way through Connecting.
This section contains the following information:
•Introduction –introduces the v40 laser, lists important features, and
describes nomenclature.
•Unpacking –provides important information about shipping your v40 laser.
•Inventory –displays and describes all components shipped with your laser.
•Mounting –describes how to attach laser components to a mounting surface.
•Connecting –explains how to connect power and control cables as well as cooling
connections for water-cooled models.
Introduction
The v40 laser is a small-footprint laser from NOVANTA featuring high power and excellent beam quality.
The circular beam provides more accurate cutting and faster processing speeds than competing
technologies. With an integrated RF power supply, meaning no external RF cables, the compact laser
housing mounts easily to flatbed cutters, robotic arms, or gantry systems making integration into your
production line simple and fast.
v40 features include:
•Compact resonator design
•RF power supply integrated into laser chassis
•Built-in “tickle” generator
•Color-coded LEDs mirror user outputs
•“Industrial-strength” ±5–24 VDC inputs and outputs
•Keyswitch fan- or water-cooled models available
•OEM (no Keyswitch/no shutter) air-, fan-, or water-cooled models available
v40 Nomenclature
v40 lasers are divided into two distinct functional categories: Keyswitch and OEM models. In addition to
a manual Keyswitch, all Keyswitch-equipped lasers include a manual shutter switch that allows the laser
output aperture to be blocked. OEM lasers do not incorporate either a manual keyswitch or shutter
assembly since they are primarily designed as components to be integrated into a larger processing
system by the Original Equipment Manufacturer (OEM) or System Integrator who bears the
responsibility for meeting the appropriate laser safety requirements for Class IV laser systems.

UNPACKING PAGE |13
Model numbers
The last three characters in the v40 model number serve to designate the functional category, cooling
method, and model version. The functional category is indicated by either a “K” for Keyswitch or “S”
(Switch-less) for OEM models. The next letter indicates the cooling method: “W” for water-cooled units,
“F” for fan-cooled units, and “A” for air-cooled lasers (where the customer must provide the proper
cooling via fans or blowers). The last letter in the model number indicates the current model version
beginning with “B.” For example, the model number FSV40KFD designates that particular v40 laser as a
“D” version, Keyswitch, fan-cooled model. FSV40SAD indicates an OEM, air-cooled v40 laser.
Unpacking
The Unpacking section includes subsections:
•Incoming inspection
•Packaging guidelines
Incoming inspection
Upon arrival, inspect all shipping containers for signs of damage. If you discover shipping damage,
document the damage (photographically if possible), then immediately notify the shipping carrier and
NOVANTA.
The shipping carrier is responsible for any damage occurring during transportation from NOVANTA, Inc.
to your receiving dock.
Packaging guidelines
•To prevent equipment damage or loss of small components, use care when removing packaging
materials.
•Save all shipping containers and packaging materials, including covers and plugs. Use these
specialized packing materials when shipping the laser to another location.
•After unpacking, review the Inventory section and verify that all components are on hand.
•When packing a laser for shipment, be sure to remove all accessory items not originally attached
to the laser including beam delivery components, cooling tubing, fittings, etc.
•Refer to the Packaging Instructions drawing in the Technical Reference chapter for information
on packaging a v40 for shipment using NOVANTA-supplied packaging materials.
•When shipping water-cooled lasers, remember to drain all cooling water from the laser and then
cap open fittings to prevent debris from entering the coolant path.
•Do not lift or support the laser using the cooling fittings; lift the laser by the mounting feet or
baseplate only.

INVENTORY PAGE |14
Inventory
Figure 1-1 v40 shipping box contents.
Table 1-1 v40 ship kit contents.
Shipping Box Contents Qty
v40 Laser 1
v40 Operator’s Manual 1
Spare Fuse (not shown) 2
Mounting Bolts
3
Cooling Tubing (water-cooled only) 1
Quick Start Plug
1
Final Test Report (not shown) 1

CONTENTS DESCRIPTION PAGE |15
Contents description
Each item listed in Table 1-1 is described below.
v40 Laser – for cutting, welding, drilling, and marking a wide variety of products and materials.
Quick Start Plug (except SAB models) – connects to ’s User I/O connector. Jumpers are built into the
plug to enable ’s shutter and remote interlock circuits for initial start-up and testing.
Cooling Tubing (water-cooled only) – carries cooling water from the chiller to the laser and back. This
black polyethylene tubing is 1/2" O.D. by 30 feet and must be cut to length.
Mounting Bolts – 1/4–20 ×5/8" bolts fasten to your mounting surface.
v40 Operator’s Manual – provides setup, operation, and maintenance information for your v40 laser.
Spare Fuse (not shown) – fast blow 25 A fuse protects ’s internal circuitry.
Final Test Report (not shown) – contains data collected during the laser’s final pre-shipment test.
Mounting
The Mounting section includes subsections:
•Fastening from above
•Fastening from below
v40’s base plate is designed so that the laser is easily mounted to either vertical or horizontal surfaces
using only three fasteners. Three ball bearing “feet” pressed into ’s base plate eliminate any possible
distortion of the laser tube caused by variations in the flatness of the surface on which the laser is
mounted. Refer to the v40 package outline drawings in the Technical Reference chapter for mounting
locations and dimensions. Read through the mounting sections below to determine which set of
mounting holes are required for your application. When mounting v40 lasers, you can choose to fasten
from above, into your mounting surface, or from below, into v40’s base plate.
Important Note: To allow proper airflow, air- or fan-cooled units must have at least 2.25" (57.2
mm) of unobstructed clearance between the outside edge of the cooling fan and any enclosure or
surface.
Caution: Possible Equipment Damage
NOVANTA does not recommend mounting lasers in a vertical “head-down” or “tail-down” orientation.
If you must mount your laser in this manner, please contact the factory for limitations as vertical
orientation increases the risk of damage to the laser’s output optic.

FASTENING FROM ABOVE PAGE |16
Fastening from above
To fasten to a mounting surface from above, perform the following steps:
1. Refer to the appropriate outline and mounting drawing for dimensions and then drill and tap
three 1/4–20 UNC holes into your mounting surface. These hole locations should correspond to
the two slots labeled “A” and the thru hole labeled “B” shown in Figure 1-2.
Figure 1-2 Fastening from above
2. Place on the mounting surface so that slots “A” and hole “B” on the base plate line up with the
tapped holes in the mounting surface.
3. Insert 1/4–20 ×5/8" UNC capscrews through ’s base plate into the threaded holes of the
mounting surface. Turn the screws by hand until the threads engage.
4. Tighten all three capscrews to a torque of 6 ft lbf (8 N m) maximum.
Fastening from below
To fasten to a mounting surface from below, perform the following steps:
1. Refer to the appropriate outline and mounting drawing for dimensions and then drill three 0.261"
(6.6 mm) diameter holes into your mounting surface. Hole locations should correspond to the
threaded holes labeled “C” shown in Figure 1-3.
Figure 1-3 Fastening from below

CONNECTING PAGE |17
2. Place on the mounting surface so that the threaded holes on the base plate (labeled “C” in Figure
1-3) line up with the holes drilled through the mounting surface.
3. Insert 1/4–20 ×5/8" UNC capscrews through the mounting surface into the threaded holes of ’s
base plate. Turn the screws by hand until the threads engage.
4. Tighten all three capscrews to a torque of 6 ft lbf (8 N m) maximum.
Connecting
The Connecting section includes subsections:
•Water-cooled connections
•OEM air-cooled connections
•Electrical connections
•Control connections
Water-cooled connections
If your v40 laser is fan-cooled, then skip to the Electrical connections section.
Read Guidelines for cutting and installing tubing before installing any cooling tubing and then make sure
to connect the cooling system exactly as described for your particular laser.
Guidelines for cutting and installing tubing
•Cut tubing lengths generously to allow for trimming.
•Cut tubing squarely; diagonal cuts may not seal properly. Carefully trim any burrs if the cut is
“ragged.”
•Avoid excessive stress on fittings; create gentle bends when routing tubing close to connectors.
Excessive stress from sharp bends tubing will compromise the sealing properties of the fitting.
•Never allow the tubing to kink, since kinking severely restricts coolant flow.
•Push tubing completely into the fitting, then pull the tubing to verify that it is locked into place.
Tubing extends into the fitting approximately 7/8 of an inch.
•If tubing must be disconnected from a fitting, first push and hold the tubing slightly into the
fitting. Next push the white fitting ring evenly towards the fitting, and then pull the tubing free.
After disconnecting tubing from a fitting, trim 1/2" from its end before reconnecting. Trimming the end
of the tubing before reconnecting the fitting provides an undisturbed sealing surface.

WATER-COOLED CONNECTIONS PAGE |18
Laser cooling fittings
If your integrated laser application uses metric cooling tubing, we recommend the installation of tubing
adaptors to convert the laser’s WATER IN and WATER OUT fittings from 1/2-inch tubing to 12-mm met-
ric tubing. These tubing adaptors are available from many tubing and fitting manufacturers.
If, for any reason, you must remove and then reinstall the threaded WATER IN and WATER OUT cooling
fittings on the laser, do not overtighten them. When installing new fittings, wrap the threads with Teflon
tape and then carefully tighten the fittings until they are just snug enough to prevent water leakage.
Chiller preparation guidelines
•You must provide fittings that will adapt the laser’s 1/2" O.D. polyethylene cooling tubing to your
chiller’s Inlet and Outlet ports. These fittings can be either “quick disconnect” or compression
type fittings.
•Because ’s cooling tubing is specified in inch sizes, the use of metric tubing fittings is discouraged
unless you have installed the appropriate inch-to-metric tubing adaptors. The use of metric fit-
tings on inch size tubing will lead to coolant leaks or may allow the pressurized tubing to blow off
the fitting.
Coolants
NOVANTA recommends that the laser’s cooling fluid contain at least 90% water (distilled or tap) by vol-
ume. In closed-loop systems, use a corrosion inhibitor/algaecide such as Optishield® Plus or equivalent.
Avoid glycol-based additives because they reduce the coolant’s heat capacity and high concentrations
may affect power stability. For NOVANTA lasers, the minimum coolant setpoint is 18 °C (64 °F) so glycol
is not necessary unless the chiller is subjected to freezing temperatures. In applications where biocides
containing chlorides are used, concentrations should not exceed 25 parts per million (PPM). Maintain a
coolant pH level above 7.0. We recommend the installation of a filter on the chiller’s return line,
especially in areas where water hardness is a problem. v40 lasers incorporate the following wetted
materials in the coolant path—aluminum, brass, copper, Delrin®, PBT, polyethylene, stainless steel, and
Viton®.
Setting coolant temperature
Choosing the correct coolant temperature is important to the proper operation and longevity of your
laser. When coolant temperature is lower than the dew point (the temperature at which moisture
condenses out of the surrounding air), condensation forms inside the laser housing leading to failure of
laser electronics as well as damage to optical surfaces.
The greatest risk of condensation damage occurs when the laser is in a high heat/high humidity environ-
ment and the chiller’s coolant temperature is colder than the dew point of the surrounding air or when
the system is shut down, but coolant continues to flow through the laser for extended periods of time.
The chiller’s temperature setpoint must always be set above the dew point temperature. In cases where
this is not possible within the specified coolant temperature range of 18 °C–22 °C (64 °F–72 °F), then the
following steps MUST be taken to reduce the risk of condensation damage.
•Stop coolant flow when the laser is shut down.

WATER-COOLED CONNECTIONS PAGE |19
•Increase coolant flow by an additional 1.0 GPM (3.8 lpm). Do not exceed a coolant pressure of 60
PSI (4.1 bar).
•Air-condition the room or the enclosure containing the laser.
•Install a dehumidifier to reduce the humidity of the enclosure containing the laser.
Table 1-2 provides dew point temperatures for a range of air temperature and relative humidity values.
Remember that the laser’s coolant temperature must be set above the dew point temperatures shown in
the chart but should not exceed 22 °C (72 °F).
Table 1-2 Dew point temperatures

WATER-COOLED CONNECTIONS PAGE |20
Cooling tubing connections
To connect cooling tubing, refer to Figure 1-4 and perform the following steps. The numbered items in
Figure 1-4 correspond to the step numbers in the following procedure.
Figure 1-4 cooling connections
1. Cut and connect a length of tubing to fit between the chiller’s Outlet port and the upper WATER
IN port on the rear of the v40 laser.
2. Cut and connect a length of tubing to fit between the lower WATER OUT port on the rear of the
laser and the chiller’s Inlet port.
3. Turn on the chiller and adjust the temperature setpoint to 18–22 °C. Regulate coolant flow to 1.0
GPM (3.8 lpm) at less than 60 PSI (4.1 bar) of pressure.
Caution: Possible Equipment Damage
Operating the laser at coolant temperatures above 22 °C (72 °F) may result in decreased
performance and/or premature failure of electronic components.
Caution: Possible Equipment Damage
Inlet cooling water temperature must always be maintained above the dew point to prevent
condensation and water damage to your laser.