HP Jet Fusion 4200 Operating instructions

HP Jet Fusion 4200 3D Printing Solution
Product Documentation
Site Preparation Guide

© Copyright 2017–2020 HP Development
Company, L.P.
Edition 8
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Table of contents
1 Overview ..................................................................................................................................................................................................... 1
System conguration ............................................................................................................................................................... 1
Documentation ......................................................................................................................................................................... 1
Site preparation overview ....................................................................................................................................................... 1
Customer responsibility ........................................................................................................................................................... 2
Safety questions and answers ............................................................................................................................................... 6
2 Site preparation requirements for the printer ..................................................................................................................................... 8
Physical space requirements .................................................................................................................................................. 8
Load bearing .............................................................................................................................................................................. 9
Floor surface ............................................................................................................................................................................. 9
Designing the optimal print-production area .................................................................................................................... 10
Environmental specications ............................................................................................................................................... 11
Ventilation ............................................................................................................................................................................... 12
Air conditioning ....................................................................................................................................................................... 13
Air exhaust .............................................................................................................................................................................. 14
Printer electrical conguration ............................................................................................................................................ 17
3 Site preparation requirements for the processing station .............................................................................................................. 23
Physical space requirements ............................................................................................................................................... 23
Load bearing ........................................................................................................................................................................... 24
Floor surface ........................................................................................................................................................................... 25
Designing the optimal print-production area .................................................................................................................... 26
Environmental specications ............................................................................................................................................... 29
Ventilation ............................................................................................................................................................................... 30
Air conditioning ....................................................................................................................................................................... 30
Processing station electrical conguration ........................................................................................................................ 30
Compressed air ....................................................................................................................................................................... 33
4 Plan your computer and network environment ................................................................................................................................ 34
Important considerations ..................................................................................................................................................... 34
ENWW iii

Introduction to the HP Cloud environment ........................................................................................................................ 36
Information about networking and security ...................................................................................................................... 38
Networking requirements .................................................................................................................................................... 39
Computer requirements ....................................................................................................................................................... 40
Test your connection to HP Cloud ....................................................................................................................................... 41
Final checks ............................................................................................................................................................................. 46
5 Site preparation checklist ...................................................................................................................................................................... 48
iv ENWW

1 Overview
System conguration
Your printer is supplied almost fully assembled and ready for the simple installation procedures performed by
your support engineer. It comes complete with printheads and a printhead cleaning roll.
Documentation
The following documents are available:
●Site preparation guide (this document)
●Introduction information
●User guide
●Legal information
●Limited warranty
Site preparation overview
This guide should assist in the following planning considerations:
●Modications to the installation area
●Site accessibility
●Emergency exits
●Planning the production area
●Mechanical, electrical and environmental specications
●Computer and network connectivity
●Contracting a specialist mover with a forklift and/or suitable moving equipment
●Contracting an electrician
●Environmental, health, and safety
ENWW System conguration 1

All information in this guide is provided on the assumption that installation planners and personnel are familiar
with:
●Architectural and planning requirements
●Applicable laws, regulations, and standards
NOTE: It is important to read the information provided in this guide thoroughly and ensure complete
compliance with all installation and operation prerequisites, safety procedures, warnings, cautions, and local
regulations.
Customer responsibility
Planning the site and printer environment
The company owner or EHS manager is responsible for all preparation of the physical site. The following tasks
must be completed before the installation:
●Prepare the site for unloading.
●Make sure the route from the unloading site to the installation site meets specications. See Unloading
route on page 8.
●Make sure you have the necessary equipment to handle the printer, as well as a specialist mover who is
familiar with your site and the information provided in this guide. Meet the requirements for second oor
installations (if necessary). See Moving equipment on page 9.
●Congure the building's electrical system used to power the printer to meet the printer's requirements and
the Electrical Code requirements of the local jurisdiction of the country where the equipment is installed. A
qualied electrician is required to power up the printer on the day of installation. See Printer electrical
conguration on page 17 and Processing station electrical conguration on page 30.
●Provide an adequate air supply for the processing station’s pneumatic circuit. See Compressed air
on page 33.
●Ensure that the room in which the system is installed meets local environmental, health, and safety (EHS)
guidelines and regulations. See Environmental specications on page 11 and Ventilation on page 12.
●For the 4210, HP recommends using the HP Jet Fusion 3D 4210 Material Unloading Kit to unload material
from a material loading tank. If a customized unloading station is used to unload material from the
material loading tank, it is the customer’s responsibility to assess the installation by reference to the EPD
(Explosion Protection Document), DHA (Dust Hazard Analysis), or any required document of the local
jurisdiction of the country where the equipment is installed, to avoid the risk of explosion.
●Supply all necessary emergency equipment.
●Make sure the equipment is located in a restricted-access area, for authorized personnel only.
●The equipment is not intended for hazardous locations or ATEX-classied zones: ordinary locations only.
●Keep the equipment separated from other equipment that could create a combustible dust cloud or
metallic dust during operation, and keep it away from eective ignition sources (open ames, sparks, heat,
and so on). Do not place the equipment close to CNC, milling, cutting machines, or polishers, which may
2 Chapter 1 Overview ENWW

cause a signicant risk of metallic dust in the air, electrical sparks that may cause ignition, or oil and dust in
suspension in the air.
●Material storage, handling, and disposal should be performed as per local laws. See the Safety Data Sheets
at http://www.hp.com/go/msds for adequate handling and storage. Follow your environmental, health, and
safety processes and procedures.
Post-processing of parts
After printing the parts and removing the material in the processing station, you must clean the parts to remove
the thin layer of material attached to the surface. To do this, you need a bead-blasting machine. HP recommends
a bead-blasting machine with the following specications:
●For PA materials:
–Manual or automatic operation
–Air pressure in the range 2–5 bar (29–72.5 psi)
–Glass beads of 70–110 µm diameter (0.00276–0.00433 in)
●For TPU material:
–Manual or automatic operation
–Air pressure in the range 4–6 bar
–Glass beads of 250-425 μm diameter
Fire-ghting equipment
You must provide two re extinguishers for the site. Make sure the extinguishers are placed where they are
easily accessible in case of re.
●A re extinguisher certied for electrical res must be in the print-production area.
●A re extinguisher must be placed in the materials storage area, due to the large amount of combustible
dust (material).
Emergency exits and rst-aid stations should also be considered.
Network and computer environment
You are responsible for all computer and networking requirements, and you must complete the following tasks:
●Have an adequate network and computer ready for the day of installation. See Plan your computer and
network environment on page 34
●Provide shielded CAT-6 LAN cables to connect the printer to your LAN
Required supplies and equipment
You are responsible for providing the following, which should be ready on the day of installation:
●One fusing agent cartridge
●One detailing agent cartridge
●Six material cartridges
ENWW Customer responsibility 3

●Sheets of A3 or tabloid paper
●An explosion-protected vacuum cleaner compliant with the following normative specications:
–Europe/IEC: Zone 22 or better, 200°C (392°F) or less
–US/NEC: Class II, division 2, 200°C (392°F) or less
And with the following additional specications:
–Air ow: 250 m³/h (147 ft³/min)
–Depression: 19.6 kPa (2.84 psi)
–Power: 1800 W (2.4 hp)
●A ladder
●A temperature and humidity sensor with data logger
●Personal protective equipment for users and service engineers, according to your environmental, safety,
and regulatory guidelines
●Lift trolley for moving external tanks and material loading tanks
●Static earthing clamps
–You are required to use static earthing clamps when using material loading tanks and/or an external
tank.
●Pallet jack
●Transportation tools to move the systems
TIP: The number of cartridges given above is the minimum required for installation. HP recommends
purchasing more cartridges of each type so that you can continue printing after installation.
Extra requirements for the 4210 with material loading tank
●Drum rotator
–You are recommended to use an explosion-protected drum rotator to operate with combustible
dusts, compliant with the following normative specications:
○Europe/IEC: Zone 22 or better, 200°C (392°F) or less
○US/NEC: Class II, division 2, 200°C (392°F) or less
–The drum rotator is required to ensure proper grounding for the drum while rotating. It should be
activated before the material loading tank is used to supply fresh material to the processing station.
–The recommended rotation speed is 20 rpm (total rotation time for material loading tank preparation
is 90 s).
●Interface to processing station
4 Chapter 1 Overview ENWW

–Fitting type: Metallic triclamp
–Standard to meet: ISO 2852 or DIN 32676 or BS 4825 (ASME BPE)
–Fitting diameter: 38 mm (1.5 in)
●Piping requirement (only if using the processing station as a material lling method for the material loading
tank)
–Flexible hoses should be suitable to transport combustible dust. Follow manufacturer’s instructions
to earth the hoses to protect them from electrostatic charging.
–Internal diameter of piping: approximately 36 mm.
–Maximum length of pipe routing: 10 m.
–Keep the number of bends along the route to a minimum. Use as large a bending radius as possible.
Hoses should be free from torsion in their routing and connection in order to avoid damage.
–Use metallic, rigid pipes where possible; and they should be properly grounded. Use piping with low
roughness on its the internal surface.
–Joints between pipe sections must be constructed correctly so that material does not build up around
the joints; you should ensure a good seal.
●Bulk discharging system
–You are recommended to use an explosion-protected bulk-discharging system to operate with
combustible dusts, compliant with the following normative specications:
○Europe/IEC: Zone 22 or better, 200°C (392°F) or less
○US/NEC: Class II, division 2, 200°C (392°F) or less
–Operating with a bulk discharging system can cause dust clouds. Keep an area of at least 2 m around
the bulk discharging system clear of electric/electronic devices or any source of ignition.
–An earth connection for the conveying pipes must be included in the bulk discharging system. Follow
the recommendation of the bulk discharging system manufacturer.
–Maximum material ow rate supplied by the system should be 5 kg/min.
●Static earthing clamps
–You are required to use static earthing clamps when using material loading tanks
Return the site preparation checklist
The company owner or EHS manager must complete and return the checklist to your reseller or service
representative a minimum of two weeks before the day of installation.
NOTE: Any delays during installation that are caused by an unprepared site will be charged to the customer.
Take care that your site is properly prepared to ensure a smooth and easy installation.
Recycle the supplies
HP provides many free and convenient ways to recycle your used HP cartridges and other supplies; see
http://www.hp.com/recycle/.
ENWW Customer responsibility 5

You can also consult the disposal instructions included in the user documentation.
For further details, see the Safety Data Sheets (SDS), which you can nd at http://www.hp.com/go/msds/.
Waste disposal
Dispose of all waste according to local regulations.
Safety questions and answers
Read and follow the operating and safety instructions before turning on the equipment.
Can the printer and processing station operate in unattended mode? Can they be
unsupervised during operation?
The printer can operate in unattended mode in this sense: for operations that do not require any manual
interaction, such as during the printing process, there is no need to have a trained operator close to the printer.
However, the system requires its operation to be supervised at all times. The reason for this requirement is that
this equipment uses high power levels. Therefore, in order to protect the system and the customer’s
environment, in the unlikely event of unexpected environmental change, unexpected malfunction, anomaly, ESD
(ElectroStatic Discharge), or electromagnetic interference, as explained in the user guide, someone needs to
press the emergency stop button and disconnect the equipment. For this reason, operation should be
supervised in some way (periodic checks, security cameras, or equivalent). However, supervision can be done by
someone who is not trained to operate the system, such as a standard security service. This needs to be done
from the rst day of system installation.
Are there any requirements for the room in which the printer and processing station are
installed?
Both the printer and the processing station should be installed in ordinary locations only. An ordinary location is
a location that is not expected to have combustible dust clouds, and therefore it does not need any specic
protection against explosions. The opposite would be a hazardous location or ATEX-classied zone, in which you
can expect to nd combustible dust clouds, and which is therefore generally constructed to resist explosions
caused by an ignition source close to the dust clouds.
The equipment should be installed in ordinary locations for these reasons:
●The equipment does not create a hazard in the area in which it is installed:
–It has been designed to minimize material spillage, and we expect regular cleaning maintenance by
the operators, therefore any spillage is unlikely to reach a concentration causing a potentially
explosive atmosphere around the equipment.
–There are no eective ignition sources inside the equipment.
●The equipment is not designed to be used in explosive atmospheres, therefore it should not be installed in
a hazardous location or ATEX-classied zone.
Therefore, the printer and processing station do not require any specic setup in the room to make it safe
against potential explosions, as they do not create such a risk; but they should be protected against any risks
created by other equipment installed nearby.
6 Chapter 1 Overview ENWW

NOTE: An explosion-protected vacuum cleaner certied for collection of combustible dust is required for
cleaning. Take measures to mitigate material spillage and avoid potential ignition sources such as ESD
(ElectroStatic Discharges), ames, and sparks. Do not smoke nearby. Do not manipulate covers, isolation and
equipment ltering enclosures beyond what is specied in the maintenance chapter of the user guide.
Can the printer and processing station be installed in the same room as other
equipment?
The printer and processing station can be installed in the same room as other printers or equipment in general,
but they should be installed away from other equipment that could create a combustible dust cloud or metallic
dust during operation.
When installing the printer in a room with other equipment, it is important to know whether the other equipment
requires an exclusion zone around it, as this is an indicator of a potential hazardous location or ATEX-classied
location. In this case, follow the manufacturer’s recommendations and material Safety Data Sheets about how
much space needs to be left around the equipment, and do not locate the printer and processing station inside
its exclusion zone. Follow your Environmental, health and safety processes and procedures.
Notice that we are referring to a combustible dust cloud. Operation does not need to be 100% dust free: any
dust quantity under 30 g/m³ is considered non-combustible. As a general indication, most market-available 3D
printers do not create combustible dust clouds during normal operation, therefore most printers can be installed
close to our system without any problem, following only the recommendations of both systems in terms of
space needed for access to doors, maneuverability, and so on. Some material management systems can create
a hazardous or ATEX-classied location, so always check the documentation of your other equipment to assess
the potential risks and decide what is the best setup for all your systems.
ENWW Safety questions and answers 7

2 Site preparation requirements for the printer
Physical space requirements
Unloading route
The printer is commonly delivered by truck. The reception area and the entrance to the site should be
unobstructed and ready to receive delivery.
The route between the unloading area of the printer and the installation site, including any corridors and
doorways through which the printer must be transported, is important to proper site preparation and must be
planned before the arrival of the printer. This pathway must be clear when the printer arrives.
Printer physical specications with packaging
Width with packaging 2300 mm (90.55 in)
Depth with packaging 1325 mm (52.17 in)
Height with packaging 2068 mm (81.42 in)
Weight with packaging 945 kg (2083 lb)
For the specications without packaging, see Load bearing on page 9 and Designing the optimal print-
production area on page 10.
Doorway specications
Minimum doorway width 2320 mm (91.34 in) with packaging
1202 mm (47.32 in) without packaging
Minimum doorway height 2088 mm (82.20 in) with packaging
1435 mm (56.50 in) without packaging
Minimum corridor width with right-angled bend 1520 mm (59.84 in) without packaging
The printer can be moved on the pallet up or down a ramp of no more than 10° inclination.
Unpacking and moving the printer
You are strongly recommended to unpack the printer where it will be used, or as close to that location as
possible.
8 Chapter 2 Site preparation requirements for the printer ENWW

IMPORTANT: The printheads should never be moved inside the printer, they should always be moved in their
original packaging and installed at the nal location.
The space required for assembly is 5.5 × 3 m (217 × 118 in).
Moving equipment
If you need to move the printer after unpacking, take into account the following considerations:
●Ground-oor installation: The printer can be moved on wheels up or down a ramp of no more than 10°
inclination.
●Above-ground installation: Use an elevator if the printer can t inside it while remaining horizontal (without
tilting the printer), and if it can support the weight. Otherwise, you may need a crane; contact your reseller
for more information.
CAUTION: The printer is heavy and can easily fall over. Moving it over a ramp or tilted oor increases the risk.
Move it smoothly, maintain safety precautions for people in the vicinity, and secure it against overbalancing.
Always move it parallel to its length.
CAUTION: If you need to move the printer on its wheels to its nal position, move it down from the pallet but do
not remove all the transport protections and locks.
CAUTION: Unloading and moving the printer and all system components is the customer's responsibility and
not HP's. Failure to provide the required moving and lifting equipment could result in personal injury or printer
damage during installation.
Load bearing
The load-bearing characteristics of the oor in the print-production area must be sucient to withstand the
weight of your printer. To calculate the load-bearing characteristics of the print-production oor, consult a
structural engineer.
Printer weight 750 kg (1653 lb)
Build unit weight (full) 185 kg (408 lb)
NOTE: Take into account that the build unit will be inserted inside the printer while printing. Therefore, you
must consider the sum of both weights inside the same footprint when the build unit is inserted.
Floor surface
The oor surface should have the following characteristics:
●Flat and horizontal
●Solid, smooth, and level
HP recommends Ff > 20 and Fl > 20, measured according to ASTM E1155M, to ensure that the oor is
suciently at and level. Otherwise the printer could malfunction.
●No holes or indentations
ENWW Load bearing 9

●ESD-free
Floor leakage resistance should be below 100 MΩ.
In many factory environments the conventional ooring materials, such as bare concrete or steel grids, are
adequately conductive.
In order to remain eective, the oor should not be covered by insulating paint, rubber mats, or plastic
sheets; care should be taken to prevent the build-up of contaminants such as resin or other insulating
substances; and its resistance should be regularly checked.
●Easy to clean
●Durable
●Non-combustible
●Free from oor vibration: for example, oor vibration is likely near a railway station, press machine room,
construction site, or heavy industry. If such vibration cannot be avoided, suitable oor preconditioning to
mitigate vibration may be needed for optimal printer performance.
NOTE: The oor surface over which the build unit will move between the printer and the processing station
should have the same characteristics: it should be horizontal, free of steps, holes, and indentations, smooth to
avoid transport vibrations, and far from any obstacle that might cause accidental shocks. It is vital to avoid
damage to the contents of the build unit, both when it is full of fresh material and also after printing. Move the
build unit slowly and with care.
Designing the optimal print-production area
You will need enough space to perform the following tasks:
●Print
●Insert the build unit
●Service the printer and replace its components
The height of the room is recommended to be at least 2500 mm (98 in) to accommodate the printer and the
processing station.
Printer physical specications
●Width: 2200 mm (87 in)
●Depth: 1250 mm (49 in) without front panel
When operating, the printer requires the following amount of space:
10 Chapter 2 Site preparation requirements for the printer ENWW

* Location of the network and electrical connections
The height of the room should be at least 2500 mm (99 in).
The build unit measures 652 × 760 × 1050 mm.
Environmental specications
Temperature during installation 20–30°C (68–86°F)
Operating temperature 20–30°C (68–86°F)
Recommended operating temperature for best performance 20–30°C (68–86°F)
Storage and reshipping temperature −25 to +55°C (−13 to +131°F)
Operating humidity 30–70% without condensation
Storage humidity < 90% without condensation
Maximum altitude when printing 3,000 m or 9,842.6 ft. (2,000 m or 6,561.8 ft. for China)
Notes
●The customer must ensure that the room in which the system is installed meets environmental, ventilation,
and air conditioning specications. The operating conditions (temperature and humidity) should remain as
stable as possible within the specied limits.
To ensure that environmental conditions are always met, a measuring system should be implemented. A
room-temperature and relative-humidity sensor with data logger should be used to take measurements
during installation and rst builds.
●The printer, build unit, and processing station should be kept at operating conditions if they contain
material.
●The printer, build unit, and processing station should be kept indoors.
ENWW Environmental specications 11

●If the printer or cartridges are moved from a cold location to a warm and humid location, water from the air
could condense on the printer parts and cartridges, and could cause leaks and printer errors. In this case,
HP recommends that you wait at least 4 hours before turning on the printer or installing the cartridges, to
allow the water to evaporate. Check for condensation before turning on the printer.
●The build unit must remain in the same environmental conditions while moving to and from the printer. If it
is exposed to dierent conditions at any time, the quality of its contents will be aected.
●The printer, build unit, processing station, and stored material should always be kept in the same
environmental conditions; HP recommends keeping them in the same room.
●The room should be free from liquids and condensation.
●If printer is located in the same room as the processing station, please check processing station and
material environment specications and adopt the most restrictive ones.
Ventilation
Ensure that the room in which the system is installed meets local environmental, health, and safety (EHS)
guidelines and regulations.
Fresh air ventilation is needed to avoid exposure to health hazards, and to maintain comfort levels. For a more
prescriptive approach to adequate ventilation, you could consult as guidance the latest edition of the ANSI/
ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) document Ventilation for
Acceptable Indoor Air Quality.
Adequate ventilation needs to be provided to ensure that potential airborne exposure to materials and agents is
adequately controlled according to their Safety Data Sheets. In some cases, and depending on the material used
with this equipment, local exhaust could be mandatory. Consult the Safety Data Sheets available at
http://www.hp.com/go/msds to identify chemical ingredients of your consumables (material and agents), and
adequate ventilation, in section 8 of the SDS “Appropriate engineering controls”.
Airborne materials can be readily identied and quantied by using established indoor air-quality testing
protocols. HP performs these assessments during the development phase for all products.
HP testing shows that, during printer operation, the concentrations of airborne contaminants measured in the
workspace are consistently well below key occupational exposure limits. This observation is based on exposure
assessments that model very active productivity at customer facilities. Customers should recognize that actual
levels in their facilities are dependent on workspace variables they control such as room size, ventilation
performance, and duration of equipment use.
HP’s assessment concluded, based on the available scientic information, that airborne materials are not
expected to present a health hazard when there is a minimum of 10 ACH (air changes per hour) of fresh air
ventilation and a minimum room volume of 90 m3.
These specications are valid for the following conditions: one HP printer, 20% of pack density, and 8 hours of
printing exposition time a day. If there is more equipment in the room, or dierent conditions, it is the customer’s
responsibility to ensure that the installation is compliant with the minimum ventilation rate to operate in safe
conditions.
If an air exhaust system is installed to evacuate air, and clean air is introduced to replace the air that is
evacuated, then the number of air changes per hour will be reduced to normal oce requirements (around 3
ACH).
In addition to the workspace benet provided by general room ventilation, intensive use of this printer system in
some customers’ facilities may necessitate the use of localized ventilation in order to provide a readily
acceptable working environment. This installation of localized exhaust for a printer frequently enables the
12 Chapter 2 Site preparation requirements for the printer ENWW

capture of airborne contaminants near their source of generation, and subsequently allows their ecient
removal from the building through contained, and relatively low-volume air ow. A workspace health and safety
professional can provide guidance on the design and use of this auxiliary ventilation equipment. See Air
conditioning on page 13.
Air conditioning
In addition to fresh air ventilation to avoid health hazards, consider also maintaining workplace ambient levels by
assuring the climatic operating conditions specied in Environmental specications on page 11 to avoid operator
discomfort and equipment malfunction.
Air conditioning in the work area should take into account that the equipment produces heat. Typically, the
printer's power dissipation without local exhaust is in the range of 9 kW to 11 kW (30.7 kBTU/h to 37.5 kBTU/h).
If local exhaust is installed, the power dissipation into the room decreases to 3 kW (10.2 kBTU/h).
Air conditioning should meet local environmental, health, and safety (EHS) guidelines and regulations. Follow
these instructions carefully when designing the air-conditioning installation and placing printers in the room:
●The air-conditioning units should not blow air directly onto the printer.
●The air-conditioning splits/diusers should be placed at least 2 meters away from the printer surfaces and
covers.
●The air-conditioning splits/diusers should be rotational, avoiding direct ows and laminar ows. The air
from the air-conditioning system should be properly mixed with the existing air in the room before reaching
the printer, and should not ow directly onto the surface of the printer. Take special care with air that
enters the cooling system at the back of the printer: air at that point should always be within the operating
temperature range.
●The air-conditioning splits/diusers should not be located directly above the printer, as any condensation
at the diuser could fall directly onto the printer and its electrical components.
●If you have a humidier, do not place it next to the printer, to avoid excessively high humidity in the air
inlets.
●If you intend to use an extractor hood, take into account the expected air ow around the printer
(illustrated below).
ENWW Air conditioning 13

Air exhaust
To reduce the number of air changes needed per hour and improve stability and control of the environmental
conditions, HP highly recommends using the air exhaust kit and connecting it to an air extraction system, to
remove air expelled by the top cover fans. The design, assembly and adjustment of the air exhaust installation
should be done by an experienced HVAC installer.
If you decide to use an extraction system, HP highly recommends the presence of a specialist or qualied
technician during the installation.
Air exhaust system specications
The pressure relative to the atmosphere at hood output should be −10 ± 5 Pa.
There are various possible ways to distribute the air pipes: among others, two pipes for each printer (one for
each air collector), or two pipes connected to a main pipe. Make sure that the installation is compliant with the
following air extraction ows:
●Collector left: 510 ± 30 m³/h (300 ± 18 ft³/min)
●Collector right: 240 ± 15 m³/h (141 ± 9 ft³/min)
●Common pipe: 750 ± 45 m³/h (441 ± 26 ft³/min)
HP recommends installing two ducts, one for each collector, connected with an inverted Y pipe connector to a
single duct. The recommended duct diameters for best air extraction are:
●Left-side input duct diameter: 200 mm (7.87 in)
●Right-side input duct diameter: 200 mm (7.87 in)
●Common output duct diameter (after inverted Y): 250 mm (9.84 in)
14 Chapter 2 Site preparation requirements for the printer ENWW

Other recommendations
●Each branch of the Y requires a valve to improve ow control.
●Connectors are located 1435 mm (56.5 in) above the oor. Calculate the hose length taking into account
the position of the connectors, leaving enough margin to allow the top cover to be opened.
●The extracted air contains some material in suspension. Plan regular cleaning to prevent dust accumulating
on external hoses and/or pipes.
●Both ducts (left and right) should have similar lengths.
●Fix the ducts to the collectors using clamps. It is important to ensure that the connection is air tight.
Airow checks after installation and while printing
The valves have to be adjusted before connecting the installation to the printer. It is recommended to use an
anemometer to measure the air speed. The measure has to be taken inside the duct (see picture).
The formula to convert from m³/h to m/s is the following:
Air Speed = Air Flow / Duct cross section area.
For duct diameters of 200 mm, the following air speeds are needed:
●Collector left: 510 m3 /h * 1 h/ 3600 sec / ((0,2 m) 2 * pi / 4) = 4.50 m/s ± 0.25 m/s
●Collector right: 240 m3 /h * 1 h/ 3600 sec / ((0,2 m) 2 * pi / 4) = 2.15 m/s ± 0.15 m/s
For other duct diameters, please calculate the correct air speed using the formula above.
An anemometer with a range between 0.5 and 20 m/s is adequate to make this measurement. The maximum
error of the measurement should be 2%.
ENWW Air exhaust 15

Take measurements at 4 dierent points of the hose perimeter as shown in the following picture, and also take a
measurement at the center of the hose. Always take measurements close to the end of the hose, where it
connects to the printer air exhaust kit, and make sure the anemometer wheel is perpendicular to the direction of
the air ow.
For each of the measurement points, take 5 dierent measurements, nd the minimum and maximum values,
and calculate their average. Finally, calculate the average of all 5 measurement points. Results should be within
specications according to the numbers provided previously. If one of the 5 measurement points is much lower
than the other 4, this could indicate a problem with the exhaust hoses. For example, that the hose is not straight
and bends at some point along its path.
Important airow notes
●Too much or too little aspiration ow and/or pressure may inuence the printing process, aecting the part
quality. Too little aspiration may lead to lack of temperature control and health issues with some printing
materials. See materials safety data sheet for more details. Too much aspiration produces a waste of
conditioned air from the room. Unbalanced aspiration may cause problems with the temperature of the
material.
●Air recirculation in air-conditioning systems may cause health issues with some printing materials. The
extracted air should be eliminated and clean air should be introduced into the room to replace it.
16 Chapter 2 Site preparation requirements for the printer ENWW