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Summary of Contents for HTC 420 VS
- Page 1 MANUAL HTC 420 VS Translation of manual in original language...
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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 5: Ec Declaration Of Conformity
Sweden +46 (0)121-29400 Type of equipment: Grinding machine Make: Model: HTC 420 VS 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 2004 onward conforms to the applicable regulations in directives MD 2006/42/EC, EMC 2004/108/EC and LVD 2006/95/EC. -
Page 7: Table Of Contents
Table of contents HTC 420 VS Table of contents 1. Introduction............1 1.1 General information............1 1.2 Responsibility..............1 1.3 Manual................1 1.3.1 Safety instructions – Explanation of symbols..1 1.4 Transportation............... 2 1.5 On delivery..............2 1.6 Unpacking the machine..........3 1.7 Machine name plate............. - Page 8 Table of contents HTC 420 VS 5. Maintenance and repairs......... 23 5.1 General............... 23 5.2 Cleaning..............23 5.3 Daily................23 5.4 Every week..............23 5.5 Every month (or 100 hours)........24 5.6 Repairs................24 5.7 Spare parts..............24 6. Troubleshooting..........26 6.1 General ..............
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Page 9: Introduction
HTC 420 VS 1. Introduction 1.1. General information HTC 420 VS is a grinder that can be used to grind, strip, clean and polish concrete, natural stone and terrazzo floors. The machine's area of application depends on the choice of tool. -
Page 10: Transportation
Introduction HTC 420 VS The symbol indicates a Warning! and means that incorrect use can result in personal injury or material damage to the machine or accessories. 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
Introduction HTC 420 VS • Hammer EZ system • Splash guard • Electrical cable with contact • EZ tool holder • Upper belt (spare part) 1.6. Unpacking the machine Warning! Read through the safety instructions and the manual carefully before use. -
Page 12: Machine Name Plate
Introduction HTC 420 VS 1.7. Machine name plate The machine name plate provides the following information. The model and serial number must be specified when ordering spare parts for the machine. Figure 1-1 Machine name plate Model Model number Serial number... -
Page 13: Vibration And Noise
Warning! 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 420 VS have been measured using equipment approved in accordance with ISO 5349-1:2001. Measurement uncertainty for the measurement equipment has been assessed as +/- 2%. -
Page 14: Safety
HTC 420 VS 2. Safety 2.1. General Information This chapter contains all the warnings and notes that have to be considered for HTC 420 VS. 2.2. Warnings Warning! The machine may only be used or repaired by personnel who have received the requisite theoretical and practical training and who have read the user manual. -
Page 15: Notes
HTC. 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. - Page 16 Note! The appropriated dust extractor must be used when dry grinding. Contact HTC for model recommendation. Note! After removing glue and wet grinding, always lift up the grinding heads so that they do not stick to the floor and damage machine components and the floor when restarting.
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Page 17: Machine Description
The machine can easily be equipped with a large number of tools, depending on the material to be ground. For the different tools, see HTC’s Product Catalogue under the Grinding Guide tab. Figure 3-1 Machine front Suction hose... - Page 18 Machine description HTC 420 VS Wheels Splash guard Grinding cover Lifting handle for grinding head Motor Lifting eye for machine Water tank Adjustable handle Figure 3-2 Machine rear Control panel Electrical connection Extraction connection Control cabinet...
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Page 19: Description Of Controls - Control Panel
Machine description HTC 420 VS 3.2. Description of controls – Control panel The picture below shows the machines control panel: Figure 3-3 Control panel Power - Standby indicator: Indicates that the machines functions have been activated. Lit when the Power knob (7) is turned to “I”. - Page 20 Machine description HTC 420 VS Power - Start/stop the machines functions: Turn the knob to “I” to activate the machines functions and prepare for start. Turn the knob to “O” to switch off the machines functions. EM-Stop - Emergency stop switch: Press the switch in an emergency to turn off the power to the machine.
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Page 21: Operation
The following section describes how to change tools and how to operate the grinder. This section does not deal with the technical aspects of grinding, such as selection of grinding tools, etc. For choice of tools, see HTC’s Product Catalogue under the Grinding Guide tab. Warning! - Page 22 Operation HTC 420 VS Warning! The machine may only be used and moved over flat surfaces. There may be a risk of crushing if the machine begins to roll. Tip! Check the minimum recommended cable area before using an extension cord. You will find the recommended cable area...
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Page 23: Handle Settings
Operation HTC 420 VS 4.2. Handle settings The picture below shows the handle positions on the machine. Figure 4-1 Handle settings The forward position - used, for instance, for transportation, as the machine takes up significantly less space. Rear position - used for tipping the machine to make tool replacement easier. -
Page 24: Fitting And Replacing Grinding Tools
Operation HTC 420 VS Warning! When changing tools or making repairs, the power to the machine must be disconnected. Set the handle to the rear position - see Figure 4-1 on page 15. Tip the machine backwards so that it rests against the ground. -
Page 25: Changing Grinding Tools
Operation HTC 420 VS Figure 4-3 Locking grinding tools 4.4.2. Changing grinding tools Remove the grinding tool by giving it a few light taps with a rubber hammer so the locking mechanism releases, see Figure 4-4 on page 18. Then draw the tool up out of... -
Page 26: Preparations For Dry Grinding
- see Figure 4-3 on page 17. 4.5. Preparations for dry grinding Warning! Check that the splash guard is fitted. Connect a dust extractor to the machine. For dust extractor models, see under the Suction System tab in the HTC Product Catalogue. -
Page 27: Preparations For Wet Grinding
Operation HTC 420 VS Note! The dust extractors suction hose must be connected to the appropriate socket on the machine. Adjust thedust extractor to match the grinder's capacity. Note! The dust extractor can be connected to both sockets found on theprotective cover for the machine. -
Page 28: Control
Operation HTC 420 VS Warning! Only cold water with no chemical additives may be used. Fill the tank with cold water. 4.7. Control The machines functions can be controlled using the control panel - see Figure 3-3 on page 11. -
Page 29: Overload
Operation HTC 420 VS Make sure the emergency stop switch has not been activated. Turn the Power knob to “I” so that the electronics are activated. Set the speed for the grinding discs using the Speed knob. Turn the Grinding knob to “FWD”. -
Page 30: Making Operation Easier
Operation HTC 420 VS 4.8. Making operation easier In order to keep the suction hose for the dust extractor and the power cable out of the working area and/or path of the machine, the hose and cable can be arranged as shown in the picture below. -
Page 31: Maintenance And Repairs
Maintenance and repairs HTC 420 VS 5. Maintenance and repairs 5.1. General We recommend regular inspection of all seals. Warning! When changing tools or making repairs, the power to the machine must be disconnected. Warning! Use safety equipment such as shoes with steel toecaps, goggles, protective gloves, a mask and hearing protection. -
Page 32: Every Month (Or 100 Hours)
Test run and listen for any dissonance from the bearings. 5.6. 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. - Page 33 Maintenance and repairs HTC 420 VS www.htc-floorsystems.com Only original tools and spare parts from HTC may be used. Otherwise neither the CE marking nor the warranty will be valid.
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Page 34: Troubleshooting
Troubleshooting HTC 420 VS 6. Troubleshooting 6.1. General This chapter describes all the errors that may occur and how to deal with them. If the error cannot be dealt with, or if there are other errors, contact your nearest retailer. See Contact Information at the start of the manual. -
Page 35: 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. Tip! Check the minimum recommended cable area before using an extension cord. -
Page 36: Electronic Error Codes
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. 7.2. Schneider Electric ATV31 Error code... - Page 37 Electronic Error Codes HTC 420 VS Error code Cause Action SCF = Short circuit in the motor Check the wiring and, if necessary, Due to a short circuit in the motor or the motor isolation. Test by the motor cable. May also be due to loosening the motor cable and an earth fault.
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Page 38: Resetting The Frequency Converter
Electronic Error Codes HTC 420 VS Error code Cause Action PHF = Mains supply phase break Check the power supply to the PHF flashes in the display for a few machine, i.e. the fuses and cable. If seconds before it goes out. Occurs if the machine still does not function someone has pulled out the cord. -
Page 39: Schneider Electric Atv12
Electronic Error Codes HTC 420 VS Press ENTER. FrH is shown in the display. Press “arrow down” until LFt is shown in the display. Press ENTER. The last error code is shown. 7.3. Schneider Electric ATV12 Error code Cause Action... -
Page 40: Checking The Last Error Code
Electronic Error Codes HTC 420 VS Wait until the display switches off. Reset the emergency stop switch. Start the machine by turning the Power knob to “I”. Tip! The machine will not start if the Grinding knob is in the “FWD”... -
Page 41: Technical Data
Technical data HTC 420 VS 8. Technical data The table below shows the machine’s technical data. HTC 420 VS EU HTC 420 VS EU HTC 420 VS US Motor 2,2 kW 2,2 kW 2,2 kW Current 13 A 25 A... - Page 42 Technical data HTC 420 VS 1334 Figure 8-1 Height and length of the machine in millimetres...
- Page 43 Technical data HTC 420 VS Figure 8-2 Width of the machine in millimetres...
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Page 44: Environment
Electrical system Cables Copper conductors with PVC casing Plastic components can be recycled by sorting under hard plastics. Electronics can be submitted as electronic waste. The dust extractor or its components can, of course, also be returned to HTC Sweden... -
Page 45: Warranty And Ce Marking
HTC 420 VS 10. 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 case and under no circumstances shall the manufacturer be held responsible for damage and defects caused by incorrect use, corrosion or use over and above the prescribed specifications. - Page 46 Warranty and CE Marking HTC 420 VS...
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