Renkforce RF2000 User manual

Operating Instructions
3D-Printer Construction Kit RF2000
Order No. 1395718
3D-Printer RF2000
Order No. 1395717

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Table of Contents
Page
1. Introduction ....................................................................................................................................................................................................4
2. Explanation of Symbols..................................................................................................................................................................................4
3. Intended Use..................................................................................................................................................................................................5
4. Safety Information..........................................................................................................................................................................................6
a) General Information .................................................................................................................................................................................6
b) Set-Up, Site of Operation.........................................................................................................................................................................6
c) Operation .................................................................................................................................................................................................7
d) Socket......................................................................................................................................................................................................7
5. Feature Description........................................................................................................................................................................................8
6. Working Principle of the 3D Printer................................................................................................................................................................8
7. Overview of the Most Important Parts............................................................................................................................................................9
8. Required Tools and Material ........................................................................................................................................................................10
9. Assembly of the Mechanical Parts...............................................................................................................................................................10
a) General Information ...............................................................................................................................................................................10
b) Assembly of the Components................................................................................................................................................................11
10. Wiring of the Electrical Components............................................................................................................................................................42
a) General Information ...............................................................................................................................................................................42
b) Installation and Connection of the PCBs and Components...................................................................................................................43
c) Wiring of the Components .....................................................................................................................................................................52
11. Final Work....................................................................................................................................................................................................66
12. First Commissioning.....................................................................................................................................................................................69
a) Installation of the Filament Holder .........................................................................................................................................................69
b) Inspection of the Fan Sheet and the Actuation for the Z-Limit Switch ...................................................................................................70
c) Setup and Transport ..............................................................................................................................................................................70
d) Mains Connection and First Activation...................................................................................................................................................71
13. Operation at the Printer................................................................................................................................................................................72
a) Function Description of the Operating Buttons......................................................................................................................................72
b) Description of the Extruders ..................................................................................................................................................................72
c) The Expanded Main Menu.....................................................................................................................................................................73
d) Menu Overview......................................................................................................................................................................................73
e) Functions of the Individual Menu Items .................................................................................................................................................76
14. Calibration....................................................................................................................................................................................................79
a) General Notes on Calibration ................................................................................................................................................................79
b) Setting the Distance between the Nozzle and the Heating Plate...........................................................................................................80
c) Executing the Head Bed Scan for PLA or ABS......................................................................................................................................84
d) Executing the Quick Head Bed Scan.....................................................................................................................................................86
15. Inserting, Removing and Changing the Filament.........................................................................................................................................89
a) Inserting the Filament - Mechanical Part ...............................................................................................................................................89
b) Inserting the Filament via the Printer Menu...........................................................................................................................................90
c) Removing and Changing the Filament ..................................................................................................................................................92
16. First Print of an Example Object from the SD Card .....................................................................................................................................93
17. General Notes on 3D Printing ......................................................................................................................................................................95

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Page
18. Software "Repetier Host" .............................................................................................................................................................................96
a) General Notes on Software ...................................................................................................................................................................96
b) Installation..............................................................................................................................................................................................96
c) Connection of the Connected Printer.....................................................................................................................................................97
d) Manual Operation via the Software .......................................................................................................................................................99
e) Placement of a Printing Object in the Software ...................................................................................................................................100
f) Preparation for Print.............................................................................................................................................................................103
g) Print .....................................................................................................................................................................................................106
h) More Detailed Description of the Slicer Functions...............................................................................................................................108
i) Setting up Another Slic3r Version ........................................................................................................................................................116
19. Extended Calibration..................................................................................................................................................................................119
a) Determining the Highest Position of the Heating Plate........................................................................................................................119
b) Fine Adjustment of the Filament Infeed ...............................................................................................................................................123
c) Fine Adjustment of Both Extruders ......................................................................................................................................................126
d) Correction of the Heating Plate Temperature.......................................................................................................................................128
20. Firmware Update........................................................................................................................................................................................129
21. Maintenance ..............................................................................................................................................................................................132
a) General Information .............................................................................................................................................................................132
b) Cleaning...............................................................................................................................................................................................132
c) Fuse Replacement...............................................................................................................................................................................133
d) Checking the Belt Tension ...................................................................................................................................................................134
e) Nozzle Change ....................................................................................................................................................................................136
22. Troubleshooting .........................................................................................................................................................................................138
23. Handling.....................................................................................................................................................................................................141
24. Disposal .....................................................................................................................................................................................................141
25. Technical Data ...........................................................................................................................................................................................141
26. Annex.........................................................................................................................................................................................................142
a) Wiring Plan of the Main PCB ...............................................................................................................................................................142
b) Notes on the Print Files (G-Code Files) on the Enclosed SD Card .....................................................................................................142
c) Setup of the Printer Settings................................................................................................................................................................143
d) Status and Error Messages .................................................................................................................................................................146
e) Recommended Tightening Torque of the Screws ................................................................................................................................150

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1. Introduction
Dear Customer,
Thank you for purchasing this product.
This product complies with the statutory national and European requirements. To maintain this status and to ensure safe operation, you as the
user must observe these operating instructions!
These operating instructions are part of this product. They contain important notes on commissioning and handling. Also consider this
if you pass on the product to any third party. Therefore, retain these operating instructions for reference!
All company names and product names are trademarks of their respective owners. All rights reserved.
If there are any technical questions, contact:
Germany: www.conrad.de/kontakt
Austria: www.conrad.at
www.business.conrad.at
Switzerland: www.conrad.ch
www.biz-conrad.ch
2. Explanation of Symbols
The symbol with a lightning bolt in a triangle is used where there is a health hazard, e.g. from electric shock. The device contains no
parts that require servicing by the user. Therefore, never open the device.
The symbol with the exclamation mark points out particular dangers associated with handling, function and operation.
This symbol warns of hot surfaces the contact with which may cause injury.
 Attention!Dangerfrommovingparts-keepawayngersandotherbodyparts.
This symbol warns of injury that may occur when reaching into the device in operation. Body parts may be crushed, pulled in or
otherwise injured.
This symbol warns of hand injury from the belt drive.
The arrow symbol indicates special advice and operating information.
Observe the operating instructions!

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3. Intended Use
The 3D printer produces two-coloured 3D-objects from suitable printing les. For this, suitable raw material (lament) is melted in the two print
heads and attached in the required position for the object.
This product is only approved for connection to 230 V/AC, 50 Hz alternating voltage.
It is intended for indoor operation only. Do not use it outdoors. Contact with moisture, e.g. in bathrooms, must be avoided under all circum-
stances.
Using the product for any other purposes than those described above may damage the product. Improper use also may cause dangers such
as short circuit, re, electric shock, etc. Read the operating instructions precisely and keep them. Only pass the product on to any third parties
together with the operating instructions.
This product complies with the statutory national and European requirements. All company names and product names are trademarks of their
respective owners. All rights reserved.
ATTENTION Mains voltage - the connection, installation and wiring of the electrical components must only be performed
by an electrician who is familiar with the applicable safety provisions. Before commissioning, inspection according to the
applicable safety provisions must be performed by an electrician.
Observe all safety and assembly notes in these operating instructions!
Current operating instructions
Download the current operating instructions via the link www.conrad.com/downloads or
scan the displayed QR code. Follow the instructions on the website.
Attention! Important note on shipping of the printer!
Keep the original outer packaging, the inlay and the transport protection well! Only this permits safe transport, e.g. for
guarantee/warranty!
Please observe the separate packaging instruction as well.
We assume no liability in case of transport damage to devices that were not sent out in their original packaging or that were
packed improperly in it!
Attention!Importantnoteonthermwareandsoftwareoftheprinter!
ThisversionoftheinstructionisvalidasofdevelopmentrmwareversionRF.01.37orhigherandrepetierhostsoftware
version1.6.2orhigher.Ifyourprinterhasanolderrmwareoryourcomputeranoldersoftwareinstalled,rstinstallthe
latest versions.
 Installthenextmasterrmwareversionassoonasitisavailable.
On this, observe chapter "20. Firmware Update" or Chapter "18. Software Repetier Host".
Update the enclosed memory card as well. The corresponding download can be found on the respective product page of
our website or in the download area.

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4. Safety Information
In case of damage caused by non-compliance with these operating instructions, the warranty/guarantee will expire. We do
not assume liability for any consequential damage.
We do not assume any liability for property damage and personal injury caused by improper use or non-compliance with
the safety instructions. In such cases the warranty/guarantee is voided.
Dear Customer: The following safety information is intended not only for the protection of the device but also for the protection of your
health. Please read the following items carefully.
a) General Information
• For safety reasons, any unauthorized conversions and/or modications to the product deviating from these operating instructions
are not permitted. Components may be damaged and thus impair the function or safety of the device.
• The mains unit corresponds to the applicable CE provisions. Compliance with the applicable CE provisions for the nished con-
struction kit, whoever, is subject to the constructor of the construction kit and also essentially depends on precise work during
assembly.
• All persons who operate this product, mount, install, assemble it, put it into operation or service it must be trained and qualied
accordingly and must observe these operating instructions.
• The 3D printer is not suitable for persons with physical, sensor or metal limitations or for inexperienced or uninformed persons.
• This product is not a toy, not to be used by children and not suitable for children. Children do not understand how dangerous electri-
cal devices can be.
• This device is a protection class I product. The voltage source must be a proper mains socket
(230 V/AC, 50 Hz) of the public mains with a protective ground contact.
• The mains socket to which the 3D printer is connected must be close to the device and easily accessible to quickly separate the
device from the mains voltage in case of an error.
• The mechanical parts of the product are produced highly precisely. Never apply any mechanical force here. The 3D printer may be
rendered useless by this.
• Do not leave any packaging material unattended. It may become a dangerous toy for children.
• If you are not sure of the correct connection or if there are any questions that are not covered by the operating instructions, do not
hesitate to contact our technical support or another specialist.
• Also observe the additional safety information in the individual chapters of these instructions.
b) Set-Up, Site of Operation
• Set up the 3D printer only on a stable, horizontal, sufciently sized surface.
• Choose the site of operation so that children cannot reach the product.
• When setting up the 3D printer, observe that the mains switch at the rear of the device must be easy to reach so that the device
can be switched off quickly and easily in case of malfunction.
• The devices must not be exposed to any extreme temperatures, strong vibrations, high moisture, such as rain or steam or strong
mechanical strain.
• Never place containers containing liquids, e.g. glasses, vases, etc. on the device or in its vicinity and do not pour any liquids out
over the device. Liquids may get into the housing and impair electrical safety. This also poses great danger of re or potentially
fatal electric shock!
If this is the case, rst power down the respective mains socket on all poles (e.g. switch off circuit breaker and FI switch) and
then pull the mains cable from the socket. Disconnect all lines from the device. Do not operate any part of the product anymore
afterwards, but take it to a specialist workshop.
• Never place any sources of open re, such as lit candles, on or right next to the device.
• When setting up the product, make sure that the mains cable is not pinched or damaged by sharp edges.

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c) Operation
• Push the emergency off switch at once if there is any electrical or mechanical problem! The printer will be powered down by this.
Only reset the emergency off switch when the problem has been removed.
• Never reach into the 3D printer in operation. The mechanically moved parts within the printer pose a high risk of injury!
• The print head and the heating plate grow very hot in operation. Never touch these parts during or just after operation. Let them
cool down sufciently rst (approx. 60 minutes).
• Disconnect the device from the mains before maintenance work or modications (unplug the mains plug!) and let it cool down.
• In operation, there will be noise and, depending on the lament material used, smells. Observe this when selecting the site of setup
and the lament material. Ensure sufcient ventilation or install an extraction system. Do not inhale arising vapours. When using
any other than the recommended lament material, poisonous vapours or gases may develop.
• Do not touch the mains cable if it is damaged. First power down the respective mains socket on all poles (e.g. switch off circuit
breaker and FI switch) and then pull the mains cable from the socket. Never operate the product with a damaged mains line.
• Never touch the mains line or the mains plug with wet or damp hands. There is a risk of potentially fatal electric shock!
• Never operate the device unattended.
• Only operate the device in moderate climates, never in tropical climates.
d) Socket
• The socket on the rear of the 3D printer serves to connect suitable devices, e.g. the mill available as an accessory. The socket is
controlled separately by the 3D-printer as required.
Never connect any other devices here that are not intended for operation in connection with the 3D-printer.
• Do not overload the socket. The maximum permitted output power is indicated on the socket (also see chapter "25. Technical
Data").
• The mains cable must not be squeezed or damaged by sharp edges. • Do not put any objects onto the mains cable and do
not step on it. Place the mains cable so that no one can trip over it and that the mains lug is easily accessible.
Also place the mains cable so that there can be no damage when operating the 3D-printer.
• Always pull a mains plug from the socket by the provided grip; never pull out a mains plug from the socket by the cable!
• Do not connect in series! Do not connect any socket strip to the socket of the 3D-printer.
• Do not operate covered!
• Voltage-free only when the plug is pulled! The socket is controlled separately by the 3D-printer. The mains voltage therefore may
increase inadvertently.
For example, if you want to operate a mill via the 3D-printer socket, rst pull the mains plug of the mill from the 3D-printer socket
before changing, e.g., the mill head.

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5. Feature Description
• Printing space approx. 230 x 180 x 200 mm (D x W x H)
• Play-free prole rail guides and ball-threaded drives for maximum precision
• Automatic printing plate measurement
• Heating plate of glass ceramics
• 2 high-precision extruders with exchangeable printing nozzle for 2-coloured printing
• Integrated long-lived industrial mains unit
• Display and key pad for the device operation right at the device
• Control via a computer (USB) or stand-alone operation (with SD or SDHC card) possible
• Manual control of the printing parameters possible even during operation
• Extremely stable by aluminium/steel mechanics
• Suitable for all common standard roll lament types
• Breaking and abrasion-free cable guides across energy guide chains
6. Working Principle of the 3D Printer
For 3D print, rst a le is needed that contains the three-dimensional data of the object to be printed (a common format of such a le is, e.g.,
a .stl-le).
This le can be produced with the corresponding software or with a 3D-scanner. There are also many printing les online that can be down-
loaded to print an object as quickly as possible.
The actual printer software has the task to render the above three-dimensional le into a le that the printer can print. This is a le in which the
individual print layers, the print temperatures for the two printing heads and heating bed, etc. are specied. The le has the extension ".gcode".
This G-CODE printing le is sent to the 3D printer either via the USB interface by the computer, or an SD card with the printing le is put into
the card reader and the 3D printer is used in standalone operation.
The 3D printer then prints the print le layer for layer according to the FFF (Fused Filament Fabrication) / FDM (Fused Deposition Modelling)
procedure.
While actually printing, the lament material is transported to the two print heads (extruders) separately from two lament rolls (bicoloured print-
ing). However, it is also possible to use only one print head (one-coloured printing).
In the extruders, the lament material is melted and then applied to the heating plate via a ne extruder nozzles layer by layer.
The heating plate moves in the Y and Z directions, the extruders move in the X-direction. Thus, all prerequisites to produce a three-dimensional
object by horizontal application of the present layers are created.
A 3D printer is a highly complex device in which many parameters must be set depending on the printer, printed object and
lamentmaterialused.
Additionally,theadhesionoftheprintedobjectontheprintingplateisinuencedbyprintingplatetemperature,lament
material, shape of the printed object and surface properties of the printing plate.
 Ambienceinuencessuchasdrafts,greaseontheprintingplate,etc.alsoplayaroleinthequalityandadhesionofthe
printed object.
For the above reasons, it is not possible to achieve high-quality print results at once and without previous experiments.
Change the adjustable parameters in small steps to achieve the best printing results for your application. The printing
examplesenclosedontheSD-cardprovidereferences,butmustberenedforperfectresultsdependingontheabove
parameters.

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7. Overview of the Most Important Parts
(1) Filament holder
(2) Extruder carriage
(3) X-plate
(4) 2 extruders
(5) Heating plate of glass ceramics
(6) Y-plate
(7) Operating button eld
(8) Display
(9) Emergency off switch
In the small gure, the printing directions (x, y and z) are indicated.
1
5
3
2
6
7
8
9
4
Z
X
Y

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8. Required Tools and Material
• Different screwdrivers (cross-head and slotted)
• Hex key 1.5 mm / 2 mm / 2.5 mm / 3 mm / 4 mm
• Hexagon wrench 4 mm / 5 mm / 5.5 mm / 7 mm
• Stop angle
• Calliper
• Wire cutter
• Small at pliers and small long-nose pliers
• Threadlocker varnish, medium strength
• Feeler gauge (recommended) (up to 1.0 mm in 0.05 mm steps)
• Hot-glue gun (optional)
9. Assembly of the Mechanical Parts
The following chapters refer to the assembly of the 3D printing construction kit, but are also interesting for owners of the ready-made device as
information for later accessory assembly.
If you have purchased the nished device, you can skip the following chapters and continue directly with the chapter "12. First Commissioning".
a) General Information
Takeenoughtimefortheassembly.Hurryingoftenleadstomistakesthatmaydamagecomponentsorruinthetimebenet
by elaborate rework.
Theworkplaceshouldbesufcientlylargeandcleansothatthedifferentcomponentsandassembliescanbeputdownand
installed easily.
The stainless steel parts of the construction kit are very sensitive to dirt. Wash your hands before installing these parts and
usecottonglovesifnecessary.Removetheprotectivelmonlydirectlybeforeassembly.
Always observe the images during assembly. Here, the assembly locations and correct alignment of the components are
shown.
All mechanical components of the construction kit are produced extremely precisely. Never apply any force during assem-
bly. All parts can be assembled without any great application of force. If this is not the case, rethink the assembly step and
reread the corresponding description in these instructions.
When tightening the screws, ensure that you do not tighten them too tightly. Many screws are turned into aluminium
threads and therefore must not be tightened as far as it would be possible, e.g., in steel threads. A table with the recom-
mended tightening torques of the screws can be found in the appendix of these instructions.
Sort the screws by size before assembly. This facilitates assembly, since you do not have to look for individual screws.
For countersunk-head screws, the length (l) is measured with the screw head; for cylinder head screws, the length measurement
takes place without the screw head. The diameter (d) is always measured by the thread.