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HTC 270 EG Manual

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MANUAL
HTC 270 EG
Translation of manual in original language

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Summary of Contents for HTC 270 EG

  • Page 1 MANUAL HTC 270 EG Translation of manual in original language...
  • Page 2 HTC 270 EG...

  • Page 3: Contact Information

    Always specify the model and serial number when asking questions about your product. Trademarks HTC is a trademark owned by HTC Sweden AB. Other names and products mentioned in this manual may be registered trademarks owned by the relevant companies.

  • Page 4: Ec Declaration Of Conformity

    Sweden +46 (0)121-29400 Type of equipment: Grinding machine Make: Model: HTC 270 EG Year of manufacture: See machine name plate Serial number: See machine name plate As the manufacturer, we hereby declare under our sole responsibility that the above product with serial numbers from 2011 onward conforms to the applicable regulations in directives MD 2006/42/EC, EMC 2004/108/EC and LVD 2006/95/EC.

  • Page 5: Table Of Contents

    HTC 270 EG Table of contents Introduction 1.1 General Information ............1.2 Responsibility ..............1.3 Manual ................1.3.1 Safety Instructions – Explanation of Symbols ..1.4 Transportation ..............1.5 On delivery ..............1.6 Unpacking the machine ........... 1.7 Machine name plate ............
  • Page 6 Table of contents HTC 270 EG Usage 4.1 General Information ............4.2 Handle settings ..............4.3 Access to grinding tools ..........4.4 Fitting and replacing grinding tools ........4.4.1 Fitting grinding tools ........... 4.4.2 Changing grinding tools ........4.5 Fitting extra weights ............
  • Page 7 HTC 270 EG Table of contents Electronic error codes 7.1 General Information ............7.2 Schneider Electric ATV12 ..........7.2.1 Resetting the frequency converter ..... 7.2.2 Checking the last error code ......7.3 Schneider Electric ATV312 ..........7.3.1 Resetting the frequency converter .....
  • Page 8 Table of contents HTC 270 EG...

  • Page 9: Introduction

    Introduction General Information HTC 270 EG is a grinder that can be used to grind, strip, clean and polish concrete, unhewn stone and terrazzo as well as wood floors. The machine's area of application depends on the choice of tool.

  • Page 10: Transportation

    Introduction HTC 270 EG Note! This symbol means Note! and indicates that material damage can occur if the machine or its accessories are used incorrectly. If you see this symbol next to a section of text, you must be particularly careful when reading through the text and not carry out any stages of which you are unsure.

  • Page 11: Unpacking The Machine

    HTC 270 EG Introduction • Gloves • HTC Cap Unpacking the machine Warning! Read through the safety instructions and the manual carefully before use. • Check carefully to see if the packaging or machine has been damaged during delivery. If there is any sign of damage, contact your retailer and report it. Report packaging damage to the transport company as well.

  • Page 12: Handling And Storage

    Always use hearing protection when using the machine. 1.9.1 Hand and arm vibrations Hand and arm-weighted vibration level [m/s²] for HTC 270 EG have been measured using equipment approved in accordance with ISO 5349-1:2001. Measurement uncertainty for the measuring equipment is given as +/- 2%.

  • Page 13: Safety

    Safety Safety General Information This chapter contains all of the warnings and observations that should be taken into consideration for HTC 270 EG. Warnings Warning! The machine may only be used or repaired by personnel who have received the appropriate theoretical and practical training and who have read this manual.

  • Page 14: Notes

    Safety HTC 270 EG Warning! During grinding, the tools become very hot. Tip the machine back and allow it to stand for a short while. Use protective gloves when removing the tools. Warning! Disconnect the electrical supply when cleaning, changing tools or repairing the machine.
  • Page 15 HTC 270 EG Safety Note! Only original tools and spare parts from HTC may be used for the machine. Otherwise, neither the CE marking nor the warranty will be valid. Note! For the CE marking to be valid, the instructions in this manual must be followed.
  • Page 16 Safety HTC 270 EG Note! Only use cold water with no chemical additives. Note! During transport, the machine must be secured for transport according to section Transportation, page 29. Always place a spacing block under the grinding head during transport to prevent the machine cracking.

  • Page 17: Machine Description

    The machine has adjustment options and functions for easily obtaining the best possible grinding result. The machine can be easily equipped with a large number of tools, depending on the floor material to be ground. For other tools, go to HTC's website www.htc-floorsystems.com for more information.
  • Page 18 Machine description HTC 270 EG Suction hose Lever for adjusting grinding head Locking pin position grinding head Rotatable floating grinding cover Figure  3-2. The machine's rear Connection for vacuum Control panel Locking handle position Electrical connection Water connection Control cabinet...

  • Page 19: Description Of Controls - Control Panel

    HTC 270 EG Machine description Description of controls – Control panel The picture below shows the machine's control panel: Figure  3-3. Control panel Power - Standby indicator: Indicates that the machine's functions have been activated. Lights up when the Power knob (7) is turned to "I".

  • Page 20: Lifting The Machine

    Machine description HTC 270 EG Lifting the machine When lifting the machine, lifting straps are used that fasten in the lifting eyes on the chassis, see Figure 3-4, page 12. Only use straps approved for lifting equipment. Figure  3-4. Lifting the machine...

  • Page 21: Usage

    The following section describes how to change tools and how to operate the grinding machine. This section does not deal with the technical aspects of grinding, such as selection of grinding tools, etc. For choice of tool, go to HTC's website www.htc-floorsystems.com for more information.

  • Page 22: Handle Settings

    Usage HTC 270 EG Handle settings The picture below shows the handle positions on the machine. Figure  4-1. Handle settings 1. Forward position - used during transport, since the machine then takes significantly less room, and as the working position for handling the machine during grinding where a better view and precision are required.

  • Page 23: Access To Grinding Tools

    HTC 270 EG Usage To obtain a good grip and the possibility to control the grinder properly during grinding with the handle in any of the forward positions, use grip 1 and 2 according to Figure 4-2, page 15. Figure  4-2. Handholds forward position...

  • Page 24: Fitting And Replacing Grinding Tools

    Usage HTC 270 EG 1. Set the handle to the upright position - see Handle settings, page 14 2. Tip the machine backwards, so it rests on the ground. Fitting and replacing grinding tools Warning! Disconnect the electrical supply, when changing tools or repairing the machine.

  • Page 25: Fitting Grinding Tools

    HTC 270 EG Usage 4.4.1 Fitting grinding tools...
  • Page 26 Usage HTC 270 EG 1. Slide the grinding tool diagonally from above down into the appropriate guide slot on the tool holder. Then push the tool fully into the guide slot, see Figure 4-3, page 18. Figure  4-3. Fitting grinding tools 2. Lock the grinding tool into the tool holder by giving it a few light taps with a rubber hammer - see Figure 4-4, page 18.

  • Page 27: Changing Grinding Tools

    HTC 270 EG Usage 4.4.2 Changing grinding tools 1. Remove the grinding tool by giving it a few light taps with a rubber hammer so the locking mechanism releases, see Figure 4-5, page 19. Then draw the tool up out of the guide slot.
  • Page 28 Usage HTC 270 EG The extra weights are used to increase the grinding pressure but they should only be used when it is absolutely necessary. Do not add on more weight than needed. The weights lie loose and rest on the ring fitted to the motor.

  • Page 29: Preparations For Dry Grinding

    HTC 270 EG Usage Preparations for dry grinding 1. Connect a dust extractor to the machine. For available models of dust extractors, go to HTC's website www.htc-floorsystems.com for more information. Note! The dust extractor's suction hose must be connected to the appropriate socket on the machine.

  • Page 30: Operation

    Usage HTC 270 EG 5. Connect a water hose to the intended connection and turn on the desired water flow, see Figure 4-7, page 22. Figure  4-7. Connecting water Warning! The grinding head must not be loaded with any other weights in addition to the intended extra weights.

  • Page 31: Emergency Stop Switch

    HTC 270 EG Usage 4.8.2 Emergency stop switch The emergency stop switch, (EM-Stop) must only be used in an emergency. When the switch is pressed, all electrically-powered equipment on the machine are turned off. Note! Do not use the emergency stop switch to stop the machine other than in emergencies, as it can damage the machine.

  • Page 32: Adjustment Of Grinding Head

    Usage HTC 270 EG Adjustment of grinding head 4.9.1 Adjustment of grinding head against walls Set the grinding tool's minimum working distance to the wall, with the help of the two small support wheels. You move the respective wheel inwards or outwards to the desired position by turning the knob on top of the wheel, see Figure 4-8, page 24.
  • Page 33 HTC 270 EG Usage 1. Pull up the locking pin, see Figure 4-9, page 25 and position 9 in Figure 3-1, page 9. Figure  4-9. Loosening locking pin for grinding head...

  • Page 34: Adjusting The Machine Before And During Grinding

    Usage HTC 270 EG 2. Turn the rear section of the machine to the desired position by pressing or pulling the handle at the same time as you hold the locking pin up, see Figure 4-10, page 26. Figure  4-10. Setting the grinding head position 3.
  • Page 35 HTC 270 EG Usage 4. Turn the adjustment wheel in Figure 4-11, page 27 until level A (for right position) or level B (for left position) is levelled. Figure  4-11. Adjustment of grinding head in level 1...
  • Page 36 Usage HTC 270 EG 5. Loosen the levers 1 and 2 in Figure 4-12, page 28 so the grinding head can be turned. Turn the adjustment wheel until level B (for right position) or level A (for left position) is levelled. Figure  4-12. Adjustment of grinding head in level 2 (shows the grinding head in left position) 6.

  • Page 37: Transportation

    HTC 270 EG Usage Tip! After a change in the grinding head's position (right/left/straight forwards) during grinding (according to section Setting the grinding head position, page  above), the grinding head must be checked to make sure it is horizontal. Follow steps 4 to 7 in the instruction above to check, and where necessary, make adjustments so the grinding head is horizontal.

  • Page 38: Maintenance And Repairs

    Maintenance and repairs HTC 270 EG Maintenance and repairs General Information We recommend regular inspections of all seals. Warning! Disconnect the electrical supply, when changing tools or repairing the machine. Warning! Use safety equipment such as safety shoes, safety glasses, protective gloves, a mask and hearing protection.

  • Page 39: Check And Cleaning Of Belt

    HTC 270 EG Maintenance and repairs • Check and clean the belt, see section Check and cleaning of belt, page 31. 5.4.1 Check and cleaning of belt 1. Place the handle in the upright position and tip the machine back, in the same way as when changing tools, see Access to grinding tools, page 15.

  • Page 40: Every Month (Or 100 Hours)

    Maintenance and repairs HTC 270 EG 5. Check the belt tension by turning the belt according to Figure 5-2, page 32. It should be possible to turn the belt approximately 1/10 of a turn by hand. Figure  5-2. Checking belt tension Note! The belt is a consumable part.

  • Page 41: Repairs

    Maintenance and repairs Repairs Any repairs that may be required must be carried out by a HTC Service Centre, which has trained service personnel and uses HTC original parts and accessories. Contact your retailer if your machine requires servicing. For contact information, see Contact Information at the start of the manual.

  • Page 42: Faultfinding

    Faultfinding HTC 270 EG Faultfinding General Information This chapter describes all the faults that may occur and how to deal with them. If the fault cannot be dealt with, or if there are other faults, contact your nearest retailer. See Contact Information at the front of the manual.

  • Page 43: The Machine Stops Immediately After Starting

    Check the tools. Ensure that the correct tools are used, that they are in working order and that they are correctly fitted. • Voltage drop. Check that the cable area meets HTC's recommendations. You will find the recommended cable area under Technical data, page 40. Tip! Check the minimum recommended cable area before using an extension cord.

  • Page 44: General Information

    In the event of an error, the error code is shown in the display. The most common error codes that may occur on the frequency converter in the control cabinet are listed below. In the event of other errors, contact the HTC Service Centre. Schneider Electric ATV12...

  • Page 45: Checking The Last Error Code

    HTC 270 EG Electronic error codes 4. Start the machine by turning the Power knob to "I". Tip! The machine will not start if the Grinding knob is in the "FWD" position when switching on the power. 7.2.2 Checking the last error code For the buttons and knobs described here, see Figure 7-1,...

  • Page 46: Resetting The Frequency Converter

    Electronic error codes HTC 270 EG Error code Cause Action Overload See OCF. Let the frequency converter cool down before restarting. Excess voltage Mains voltage too high or disturbance in the mains supply. Check the supply voltage, change socket. Under-voltage The connection cable is too long, poor connection or too many consumers connected to the mains.
  • Page 47 HTC 270 EG Electronic error codes 1. Press Enter. rEF is shown in the display. 2. Turn the knob counter-clockwise, until SUP is shown in the display. 3. Press Enter. FrH is shown in the display. 4. Turn the knob counter-clockwise, until LFt is shown in the display.

  • Page 48: Technical Data

    Technical data HTC 270 EG Technical data The table below shows the machine's technical data. Machine type HTC 270 EG HTC 270 EG HTC 270 EG 1 x 230 V, 50 1 x 230 V, 60 3 x 460 V, 60...
  • Page 49 HTC 270 EG Technical data Figure  8-1. Height and length of the machine in millimetres...
  • Page 50 Technical data HTC 270 EG Figure  8-2. Width of the machine in millimetres...
  • Page 51 HTC 270 EG Technical data Figure  8-3. Working angles for the grinding head...
  • Page 52 Plastic components can be recycled by sorting as hard plastics. Electronics can be deposited as electronic waste. The machine or machine components can also be returned to HTC Sweden AB. For recycling and scrapping of components, see the applicable national regulations for each country.

  • Page 53: Warranty And Ce Marking

    Warranty and CE marking 10.1 Warranty This warranty only covers manufacturing defects. HTC bears no responsibility for damage that arises or occurs during transportation, unpacking or use. In no instance and under no circumstances shall the manufacturer be held responsible for damage and defects caused by incorrect use, corrosion or use outside the prescribed specifications.

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