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+# Operating Instructions
+
+Original operating instructions
+
+QiTech Industries
+
+Weichselstraße 9, 67574 Osthofen,
+
+Germany
+
+---
+
+# JARVIS Pro Winder
+
+# EC Declaration of Conformity
+
+according to 2006/42/EC, Annex II, No. 1 A
+
+The content of the EC Declaration of Conformity corresponds to Annex II, No. 1 A, of Directive
+2006 / 42 /EC.
+
+Manufacturer of the machine:
+
+```
+QiTech Industries GmbH
+Weichselstraße 9
+67574 Osthofen Authorised
+```
+representative of the manufacturer:
+
+
+Simon Kolb
+
+Salzgasse 6
+
+67574 Osthofen Machine
+
+under consideration:
+
+We hereby declare that the above mentioned machine is in conformity with all relevant provisions
+of the EC Machinery Directive 2006/42/EC. The machine is also in compliance with all relevant
+provisions of the following EC Directives:
+
+- 2014 / 30 /EU Electromagnetic Compatibility / European EMC Directive
+- 2014/35/EU Low Voltage Directive (protection objectives only)
+- 2011/65/EU ROHS Directives (ROHS 2 )
+
+The following harmonised standards (or parts of these standards) have been applied
+
+- DIN EN ISO 12100
+
+```
+General designation Filament winding machine
+function Winding and rewinding of filaments
+Model JARVIS Pro Winder
+type Filament winding machine
+Serial number PB- 5 W HTL- 02
+Trade name JARVIS Pro Winder
+Year of manufacture 2024
+```
+
+Darmstadt,
+15 / 03 / 2023
+
+_Note: References of the EC directives, harmonised standards and standards and specifications can be found in the
+standards search_
+
+```
+Darmstadt, 26/10/
+```
+Mr Kolb
+
+
+# Operating instructions based on DIN
+
+# EN ISO 20607
+
+```
+Designation JARVIS Pro Winder
+Year of manufacture 2024
+Manufacturer: QiTech QiTech Industries GmbH
+Administrator Simon Kolb
+Salzgasse 6
+67574 Osthofen
+```
+```
+Date of issue 11 April 2023
+Publication version V1.0 - German
+```
+
+Read before commissioning!
+
+These operating instructions are intended to enable all persons working on the machine to carry
+out their work safely and correctly.
+
+Every person who operates, maintains or repairs the machine must have read the operating
+instructions, in particular the safety regulations, before commissioning.
+
+These operating instructions must be available on the machine at all times. The operator
+must ensure that all information necessary for the safe operation of the machine is made
+available to the operating personnel. If the operating instructions are available in electronic
+form, the operator must ensure that the operating personnel are able to view the operating
+instructions.
+
+The original version of these operating instructions is written in German.
+
+We therefore ask you to read through the relevant instructions carefully and to observe them
+thoroughly.
+
+After unpacking the machine, check for any damage that may have occurred during
+transport.
+
+ATTENTION: Before using the machine for the first time, please inform yourself about the national
+regulations (occupational safety, environment).
+
+Reproduction and reprinting in any form, even in extracts, requires the written authorisation of
+QiTech Industries.
+
+
+## Table of contents
+
+- 1 Machine description
+- 1.1 Noise emissions
+- 1.2 General, important safety instructions
+- 1.3 Description of the pictograms, symbols and warnings used
+- 1.4 Intended use.............................................................................................................................................
+- 1.5 Reasonably foreseeable misuse................................................................................................................
+- 1.6 Significant change / other use
+- 1.7 Description of the safety devices
+- 1.8 Instruction and training............................................................................................................................
+- 1.9 Noise emissions from the machine during activities
+- 2 Life phases of the machine
+- 2.1 Transport and assembly
+- 2.2 Assembly, installation and commissioning
+- 2.3 Operation and control (work sequence)
+- 2.4 Maintenance, inspection, testing
+- 2.5 Troubleshooting and fault rectification....................................................................................................
+- 2.6 Dismantling, decommissioning and disposal
+- 3 Hazard warning and information on residual risks
+- 4 Glossary and definitions
+
+
+## 1 Machine description
+
+
+```
+Item number Item number Description
+```
+```
+1 Spool axis
+```
+```
+2 Coil quick-release fastener
+```
+```
+3 Grooved plate
+```
+```
+4 Traverse
+```
+```
+5 Installer
+```
+```
+6 Laser diode
+```
+```
+7 Load arm
+```
+```
+8 Weight disc
+```
+```
+9 Puller rollers
+```
+```
+10 Filament guide
+```
+```
+11 Emergency stop switch
+```
+```
+12 24V 10A power supply unit
+```
+```
+13 USB-A to USB-C cable
+```
+```
+14 Driver (mandrel)
+```
+```
+15 Underframe (optional)
+```
+## 1.1 Noise emissions
+
+Sound power level (LWAC)
+
+```
+Specification Value Unit
+Idle mode <70 dB
+```
+Workplace-related emission value (LPAC)
+
+```
+Specification Value Unit
+Idle mode <70 dB
+```
+Noise emission specification according to DIN 45649 Part 1
+
+
+Noise measurement method and operating condition acc: DIN 45635 Part 16 and Part 1605
+
+Accuracy class: 2
+
+## 1.2 General, important safety instructions
+
+1. Only professionally trained persons may operate the machine. The guarantee and warranty will
+    be invalidated if damage is caused by improper operation.
+2. We would like to point out that no liability is accepted for damage caused by failure to observe these
+    operating instructions.
+3. The operator of the machine must ensure that at least one copy of the operating instructions is kept in
+    the immediate vicinity of the machine and is accessible to persons working with the machine.
+4. The operator must ensure that the safety and danger notices on the machine are observed and that the
+    signs are clearly legible.
+5. Never work without the prescribed personal protective equipment (e.g. safety footwear).
+6. Wear close-fitting clothing and a hairnet if you have long hair. Do not wear loose or baggy clothing
+    (ties, shirt sleeves, jewellery, etc.).
+7. Activities with a risk of entrapment may only be carried out without gloves. If gloves are required for
+    individual activities, the machine must first be brought into a safe condition.
+8. If the emission sound pressure level at the workplace exceeds 80 dB (A), hearing protection must be worn.
+9. Never leave the machine in operation without supervision.
+10. Secure your machine so that it cannot be switched on by children. Persons who have not been
+    instructed must not operate the machine.
+11. Before using the machine, make sure that it is in perfect condition (carry out a visual inspection before
+    starting work). Pay particular attention to any damage to the earthing contact plug or the electrical
+    connection. Never use the machine with defective, crushed or bare cables.
+12. Insert the earthing contact plug into an earthing contact socket suitable for the machine. The supply cable
+    for the machine may only be connected to a socket outlet with earthing contact or a connection box. Have
+    the socket outlet or connection box checked by a qualified electrician beforehand.
+13. During maintenance and cleaning work, the machine must be switched off and the earthing contact
+    plug disconnected. Work on the electrical equipment of the machine may only be carried out by
+    qualified electricians. The safety regulations for electrical engineering must be observed:
+    - Switch off the machine
+    - Disconnect the USB connection
+    - Secure the machine against being switched on again
+
+
+14. Have the machine de-energised by a qualified electrician
+15. Earth and short-circuit the machine
+16. Cover or isolate neighbouring live parts
+17. Do not reach into moving parts of the machine.
+18. Keep a safe distance from rotating parts of the machine. Only change the bobbin when the bobbin axis is stationary.
+19. Keep the work area clean. Do not place any objects on the machine.
+20. Always switch off the machine when you are not using it.
+21. Stay with the machine until it has come to a standstill.
+22. Repairs may only be carried out by qualified specialist personnel! Repair work may only be carried out by persons who are qualified for the repair work in question and who are familiar with the relevant occupational safety regulations.
+23. Protect the machine from moisture.
+24. Check the machine regularly for damage. Only replace damaged parts with original parts and have them
+replaced by qualified specialists. The guarantee and warranty will be invalidated if accessories and spare
+parts are used that are not authorised for the machine.
+1.  To avoid inadequate lighting, we recommend installing light sources in accordance with national
+health and safety regulations (e.g. workplace directive).
+1.  All persons working on the machine must be trained on the basis of these operating instructions before
+starting work. In particular, persons working on the machine must be familiarised with the safety
+markings described in chapter 1.3.
+
+```
+Danger!
+Danger to life due to technically faulty machine
+The machine may only be used when it is in perfect technical condition and in accordance with
+its intended use, in a safety-conscious and hazard-conscious manner and in compliance with
+these operating instructions. All faults, especially those that could impair safety, must be
+rectified immediately before starting the winder.
+Everyone who works on or with the JARVIS Pro Winder is responsible for observing these safety
+aspects!
+```
+
+## 1.3 Description of the pictograms, symbols and warnings used
+
+```
+Warning signs Mandatory sign
+Pictogram Description of pictogram Pictogram Pictogram Description
+```
+```
+W001 General warning sign M001 General warning sign
+Mandatory sign
+The combination of the
+symbol W001 and the
+signal word " Danger "
+indicates an
+indicates an imminently
+hazardous situation which, if
+not avoided
+death or serious injury if it is
+not avoided.
+```
+```
+This combination of symbol
+and signal word
+indicates a potentially
+hazardous situation which, if
+not avoided, may result in
+damage to property or the
+environment.
+not avoided.
+The combination of the
+symbol W001 and the signal
+word " Warning " indicates an
+imminently hazardous
+situation which, if not avoided,
+will result in death or serious
+injury.
+death or serious injury if it is
+not avoided.
+```
+```
+The combination of the
+symbol W001 and the signal
+word " Caution " indicates an
+indicates an imminently
+hazardous situation which, if
+not avoided
+death or serious injury if not
+avoided.
+```
+W008 Warning of risk of falling M003 Use hearing protection
+
+
+W011 Warning of
+
+danger of slipping
+
+M004 Use eye protection
+
+W004 Warning of laser beam M008 Use foot protection
+
+W012 Warning of electrical
+
+voltage
+
+M009 Use hand protection
+
+W017 Warning of hot surface M010 Use protective clothing
+
+W018 Warning
+
+against automatic
+
+start-up
+
+M012 Use handrail
+
+W019 Warning of crushing
+
+hazard
+
+```
+M021 Switch off before
+maintenance or repair
+```
+W024 Warning against hand
+
+injuries
+
+M014 Use head protection
+
+W025 Warning
+
+against counter-
+
+rotating rollers
+
+W016 Warning of toxic
+
+substances
+
+
+**Prohibition signs International pictograms / other**
+
+**Pictogram Pictogram description Pictogram Pictogram Description**
+
+```
+P001 General
+prohibition sign
+```
+F001 Fire extinguisher
+
+P002 No smoking ANSI Z535.3 - DANGER
+
+```
+P003 No naked flames; fire,
+open source of ignition and
+smoking prohibited
+```
+ANSI Z535.3 - WARNING
+
+```
+P006 Prohibited for industrial
+trucks
+```
+ANSI Z535.3 - CAUTION
+
+```
+P009 Climbing prohibited -
+In the sense of climbing
+prohibited for unauthorised
+persons
+```
+ANSI Z535.3 - NOTICE
+
+```
+P022 Eating and drinking
+prohibited
+```
+```
+ANSI Z535.3 - SAFETY
+INSTRUCTIONS
+```
+```
+P024 Entering the area
+prohibited
+```
+```
+Symbol for separate collection
+of waste electrical and
+electronic equipment
+```
+P031 Switching prohibited
+
+```
+D-P006 Access prohibited for
+unauthorised persons
+```
+
+## 1.4 Intended use.............................................................................................................................................
+
+The JARVIS Pro Winder is designed for winding and rewinding filaments between 1 mm and 3 mm.
+
+The winder must be placed on a stable, level surface or a braked trolley and secured if necessary. The test and
+work sequence is described in chapter 3.4 Work sequence.
+
+When using the winder, it is essential that the work steps described in the chapter "Work sequence" or in the
+operating instructions are followed.
+
+In the event of significant changes or deviations, it is necessary to carry out a new risk assessment in
+accordance with the Machinery Directive and to document the changes in the corresponding documents.
+
+The machine is designed exclusively for use inside buildings. The machine must not be
+operated in potentially explosive atmospheres.
+Use in the area of food production is prohibited.
+
+Use of the machine for purposes other than those specified is prohibited.
+
+Other intended uses include cleaning and maintenance work as well as troubleshooting, fault rectification and
+repair.
+
+## 1.5 Reasonably foreseeable misuse................................................................................................................
+
+**Reasonably foreseeable misuse** exists in particular when winding unsuitable filaments:
+
+- Filaments that are difficult to bend
+- Easily tearable filaments
+- Filaments outside the permitted diameter range of 1mm - 3mm
+- Filaments with a surface temperature of> 50°C
+- Particularly flat, sharp-edged or pointed filaments
+
+In addition, the following procedures must be regarded as misuse:
+
+- Operating the winder on an uneven surface or in a position other than the intended horizontal position
+or on an unbraked trolley.
+- The use of unauthorised coil sizes.
+- Use of spare parts and components not authorised by the manufacturer.
+
+
+- Operating the winder without supervision or in ghost shifts.
+
+Figure 1: Authorised coil sizes
+
+Furthermore, there is always the possibility that existing/provided safety guards are dismantled or the
+existing sensors are manipulated or triggered by means other than the intended components.
+
+The **misuse** mentioned must be explicitly prohibited with reference to these operating instructions and by written
+operating instructions, and the use of the winder must also be explicitly restricted in the operating instructions to
+the intended use mentioned above.
+
+Maintenance and repair of the machine may only be carried out by the manufacturer's employees, trained
+skilled workers or semi-skilled and trained personnel.
+
+## 1.6 Significant change / other use
+
+Any use of the machine other than the intended use is prohibited and is considered improper use. Claims of
+any kind against the manufacturer or its authorised representatives due to damage resulting from improper
+use of the machine are excluded. The operator alone is liable for all damage caused by improper use.
+
+## 1.7 Description of the safety devices
+
+**Emergency stop devices or emergency stop devices**
+
+
+```
+Figure 2: Emergency stop or emergency stop command device
+```
+The emergency stop switch is used to quickly stop the machine in the event of danger. It can be reached from
+all positions in front of the machine. When an emergency stop device is actuated, the entire machine is
+stopped by disconnecting the mains supply.
+
+Hazardous movements are brought to a controlled standstill as quickly as possible. The machine can only be
+restarted by physically resetting the emergency stop switch and then starting one of the operating modes in
+the software.
+
+**Overheating protection**
+If one of the motor drivers becomes too hot, it switches off automatically and sends an error message to the
+control system. This then stops all other components of the machine.
+
+**Spool stop in the event of filament breakage**
+If the filament tears during winding, the spool stops automatically after a short time.
+
+**Separating protective devices:**
+
+The housing clad with aluminium Dibond plates prevents contact with hot motors, interference with the drive
+spindle of the traverse and manipulation of the electronics. It also prevents electrostatic charges from jumping
+from the filament to the electronics.
+
+If guards are opened or removed for maintenance work, they must be closed or refitted before the machine is
+switched on again. It is not permitted to operate the machine without all properly installed and operational
+protective devices.
+
+## 1.8 Instruction and training............................................................................................................................
+
+As the contractor/operator, you are obliged to inform and instruct the operating personnel about existing legal
+and accident prevention regulations as well as about existing safety equipment on the winder. This obligation
+also extends to safety equipment installed around the winder. The various technical qualifications of the
+employees must be taken into account.
+
+
+The operating personnel must have understood the instruction and it must be ensured that the instruction is
+observed.
+
+This is the only way to ensure that your personnel work in a safety and hazard-conscious manner. Compliance with
+the contents of the instruction should be checked regularly.
+
+As the owner/operator, you must therefore obtain written confirmation from each employee that they have
+attended an instruction session.
+
+## 1.9 Noise emissions from the machine during activities
+
+The noise emissions of the machine were measured on the same machine types. Under normal operating
+conditions, the maximum noise emission of the extruder is below the maximum permitted values.
+
+Depending on the activity or the duration of the activity, the operator must determine whether suitable hearing
+protection is required as part of a risk assessment.
+
+
+## 2 Life phases of the machine
+
+## 2.1 Transport and assembly
+
+**Requirements for the installation site**
+
+- Installation only in industrial and commercial indoor areas.
+- The surface must be level and solid.
+- The location must be as fire-free as possible and equipped with a fire extinguisher.
+
+## 2.2 Assembly, installation and commissioning
+
+**Basic installation**
+
+If the winder is supplied without a base, it must be screwed to the surface with M8 screws at each of the four
+corners.
+
+If the Winder is supplied with a mobile container, the parking brakes must be applied.
+
+In both cases, the cables must be routed in such a way that they cannot be tripped over.
+
+**Installing the JARVIS Control Software**
+
+The machine is controlled using the specially designed JARVIS Control software. This can either be obtained
+from the manufacturer's website or installed on a Windows or MacOS system from the enclosed USB stick.
+Follow the instructions in the software to install the required drivers and establish a connection with the
+winder via the USB cable.
+
+```
+Caution!
+Danger to life due to incorrect installation and commissioning!
+Errors during installation can lead to life-threatening situations or cause considerable damage to
+property.
+Installation and commissioning may only be carried out by the manufacturer's employees.
+```
+```
+Danger!
+Risk of injury due to improper transport.
+Be careful when loading the machine, do not place any limbs under the parts when setting them
+down, do not stand under suspended loads or between moving loads and walls or machine parts.
+Wear personal protective equipment: safety shoes, protective work clothing, protective gloves
+```
+
+Some important safety measures must be observed to ensure safe operation of the extruder:
+
+- It is important to only use original fuses with the prescribed current ratings to avoid overloading.
+- If inspection, maintenance and repair work is carried out on electrical components, these must be de-
+    energised beforehand. Equipment that has been disconnected must be secured against unintentional
+    or automatic reconnection. First check that there is no voltage and insulate neighbouring live
+    components.
+- Care must be taken to ensure that design features are not modified in such a way as to reduce safety.
+- If it is necessary to work on live components, an additional person should be called in to operate
+    the emergency stop button or the main switch in an emergency.
+- Only voltage-insulated tools and appropriate clothing may be used.
+- Proper earthing of the electrical system must be ensured by protective conductor systems.
+- Cables must be checked regularly for damage and replaced if necessary.
+
+## 2.3 Operation and control (work sequence)
+
+A visual inspection must be carried out every working day before the machine is started
+
+up. Then start the machine as follows:
+
+1. Switch on the machine by plugging in the mains plug
+    - Connect the machine to the control software
+    - Connect the USB cable to the PC
+    - Follow the instructions in JARVIS Control
+    - Winder then appears in the "Machines" tab of the software
+2. Mount the bobbin on the bobbin axle
+    - Remove the quick-release fastener
+    - Move the driver in the groove to the height of the hole in the coil flank
+    - Slide the bobbin over the axle and the driver
+    - Tighten the quick-release fastener again
+3. Calibrating the bobbin sides
+    - Select "Calibrate" in the function bar of the software
+    - Move the "Endstops" slider to the approximate position of the inside of the bobbin
+    - Click on "Calibrate" again
+    - using the laser dot, repeat the previous steps and fine-tune until the dot is exactly on the edge
+       of the inner bobbin flank
+    - Repeat the same process for the other outer coil flank
+4. Adjust the filament diameter
+
+
+- Adjust the diameter of the filament in the Settings tab (1.75 mm by default)
+- Select "Pull in" in the function bar
+- Thread the filament through the puller rollers (be careful, counter-rotating rollers!)
+- For extrusion: Use the "Puller Speed" slider to manually adjust the speed until the filament has
+    the desired diameter
+5. Start winding
+- Depending on the winding speed and the desired winding pressure, load the load arm with the
+appropriate number of weighted discs (slow winding with few discs, fast winding with more
+discs)
+- Rotate the load arm upwards and place it on the puller
+- Press the "Wind" button
+- Thread the filament coming out of the puller through the feeder into the spool and fix it there
+- Place the load arm on the filament strand from above
+6. Change the spool
+- Press the "Pull in" button
+- Remove the spool as described above and insert a new spool
+- Continue winding by clicking on "Wind"
+7. Stopping the winding process
+- "Standby" mode - motors energised but not in motion or
+- Select "Off" mode - no current on the motors
+- If the filament gets caught, the spool spins or there is a danger to persons, press the emergency
+stop button
+8. Switch off the machine by disconnecting the mains connection and the USB cable
+
+**Unwinding filament**
+
+- Mount the filament roll to be unwound onto the spool axle
+- Select the "Pull out" function
+- Feed the filament through the puller rollers in the opposite direction to winding (caution,
+    counter-rotating rollers!)
+- Omit the traverseer and fold the load arm upwards
+
+**Changing process variables during operation**
+All settings such as the position of the spool sides, the winding speed or the filament diameter can also be
+adjusted during the winding process without interrupting it. To do this, change the value in the relevant field
+and click the "Wind" button again to apply it. As soon as a setting has been changed, it is marked with an
+orange bar.
+
+**Rewinding filament - not all winder versions**
+
+- Mount the full spool on the holder provided for this purpose
+
+
+- Mount the empty bobbin on the bobbin axle
+- Calibrate the winding sides and set the filament width
+- Slightly increase the pressure on the axle with the full spool using the rotary wheel on the top of the
+    housing
+- Guide the filament from the full spool over the feeder and fix it to the spool
+- Click on "Rewind" in the Jarvis Control function bar
+- Adjust the rewinding speed using the slider
+
+**Automatically tune the winding speed to the desired diameter**
+
+- Ensure that both a DRE and the winder are connected to Jarvis Control
+- Ensure that the extruder has a constant output of +-1% fluctuation
+- Enter the distance between the DRE measuring window and extruder nozzle in the "Settings" tab
+- Start the winding process as usual via "Wind"
+- Activate the "Sync to DRE" button next to the "Puller Speed" slider
+- Wait approx. 10 minutes until the filament diameter is within the range of the set value
+
+**Stop the winding process automatically after a certain number of metres**
+
+- Activate the "Auto stop winding or pulling" option
+- Select target length, target mode and alarm settings
+- Click on "Wind" or "Pull" in the function bar
+- As soon as the blue progress bar has reached the right-hand edge of the screen, the desired
+    number of metres has been wound and the winder automatically switches to the specified mode
+
+
+Figure 3: View of the winder control in Jarvis Control
+
+## 2.4 Maintenance, inspection, testing
+
+Maintenance and servicing work on the machine may only be carried out by
+only be carried out by reliable, trained personnel. The minimum age required by law in the country of use must be
+observed!
+Personnel to be trained, instructed or undergoing general training may only work on the Winder under the
+constant supervision of an experienced person!
+
+**Updating the Winder software**
+There are regular updates for the "JARVIS Control" software, which may contain bug fixes as well as new
+functions or security updates. It is therefore recommended that you regularly check the manufacturer's
+website for new versions of the control software. Updates for the machine software itself and installation
+instructions may also be provided there.
+
+```
+Danger!
+Danger to life due to operation of the machine in faulty condition
+If safety-relevant changes or defects occur on the
+If safety-relevant changes or defects occur on the machine, shut down immediately, secure against
+restarting and report the process to the responsible office/person!
+```
+
+**Lubricating the traverse spindle**
+The threaded spindle must be re-oiled after approx. 20 operating hours, but at the latest when the traverser no
+longer moves to the desired position because the motor is spinning.
+To do this, loosen the plate on the top of the housing with an M5 Allen key and drizzle commercially available
+lubricating oil or grease, e.g. WD40, over the entire length of the threaded spindle.
+
+**Retightening screw connections**
+After approx. 100 operating hours, the rear panel of the winder should be removed using an M5 Allen key so that
+the screw connections inside the housing can be retightened. The following should be checked:
+
+- Grub screws of the motor couplings (puller, traverse, coil)
+- Fastening screws of the motors (puller, traverse, coil)
+- Fastening screws of the angle sensor of the load arm All
+
+should be tightened at least hand-tight.
+
+**Replacing the puller rollers**
+The polyurethane coating of the puller rollers will inevitably wear out over time. As soon as you notice the
+filament slipping through the rollers, they should be replaced. Suitable spare parts are available from the dealer.
+To replace them, the rear panel must be removed and the screws of the puller panelling loosened from the
+rear. The connection between the motor axle and rollers must also be disconnected. By loosening a few screws
+on the front panelling on the side of the puller, it is possible to remove the panelling by bending it slightly. The
+rollers can now be pulled off the axles and replaced.
+
+## 2.5 Troubleshooting and fault rectification....................................................................................................
+
+**Machine is not recognised by JARVIS Control**
+
+- Is the USB cable connected?
+- Are the drivers listed in the software installed correctly?
+- Is the latest version of JARVIS Control installed?
+- Is the device displayed in the "Device Manager" (Windows)?
+**Filament tears off frequently**
+- Was the filament sufficiently cooled before winding?
+- Have the weights been removed from the load arm?
+- Is the filament within the permitted diameter range of 1mm - 3mm?
+
+**Puller rollers are scored**
+It is normal for the puller rollers to wear out over time. However, some options can be checked
+
+**Caution!**
+
+```
+Observe the instructions for maintenance work when servicing the machine!
+```
+
+can be checked:
+
+- Is the surface temperature< 50°C when the filament runs through the rollers?
+- Is the filament slipping through the rollers instead of being conveyed by them, causing more
+    abrasion?
+- Is the tension of the filament too strong? Adjust with weights if necessary.
+
+**Filament is not wound perfectly parallel**
+
+- How large is the inner diameter of the spool on which the filament is wound? The closer the winding is
+    to the traverse, the better the winding pattern will be.
+- Have the spool sides been calibrated as described?
+- Has the correct filament diameter been set?
+- Have you tried to fine-tune the two settings independently of the procedure described here?
+- Does the problem already occur in the first layer, or only afterwards? If the first layer is not perfectly
+    wound (e.g. due to skewed threading), the filament in the subsequent layers always slips into the
+