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Summary of Contents for HTC HTC 420 VS
- Page 1 MANUAL HTC 420 VS...
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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 In accordance with EMC 2004/108/EC, LVD 2006/95/EC, MD 2006/42/EC Type of equipment Grinder Make Trademark HTC 420 VS Manufacturer HTC Sweden AB Box 69 614 22 Söderköping The product was CE marked in 2004. As the manufacturer, we hereby declare under sole responsibility that the product conforms with the terms of the directives listed above.
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Page 7: Table Of Contents
HTC 420 VS Table of contents Table of contents 1. Introduction............1 1.1 General................. 1 1.2 Liability................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............. 3 1.8 Handling and storage........... - Page 8 Table of contents HTC 420 VS 5. Maintenance and repairs......... 21 5.1 General............... 21 5.2 Cleaning..............21 5.3 Daily................21 5.4 Every week..............21 5.5 Every month (or 100 hours)........22 5.6 Repairs................22 6. Troubleshooting..........23 6.1 General ..............23 6.1.1 The machine will not start........
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Page 9: Introduction
Introduction 1. Introduction 1.1. General HTC 420 VS is a grinder that can be used to grind, strip, clean and polish concrete, unhewn stone and terrazzo floors. The areas of application for the machine depend on the choice of tool. -
Page 10: Transportation
Introduction HTC 420 VS a section of text, you must pay particular attention when reading through the text and not carry out any operations of which you are unsure. This is for your own and other users’ safety and to avoid damage to machinery or other equipment. -
Page 11: Unpacking The Machine
HTC 420 VS Introduction 1.6. 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 are signs of damage, contact your retailer and report the damage. -
Page 12: Safety
HTC 420 VS 2. Safety 2.1. General This chapter contains all the warnings and observations that should be taken into consideration for HTC 420 VS. 2.2. Warnings Warning! The machine may only be operated or repaired by personnel who have completed the required practical and theoretical training and who have read this manual thoroughly. -
Page 13: Observations
The machine may only be used for grinding and polishing unhewn stone, terrazzo, concrete, other materials specified in this manual or material recommended by HTC. Note! Only original tools and spare parts from HTC may be used for the machine, otherwise the CE mark and warranty will be invalid. - Page 14 Note! When dry grinding, a suitable dust extractor should be used. Contact HTC for model recommendations. 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 15: 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 16 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 17: Description Of Controls - Control Panel
HTC 420 VS Machine description 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 18 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 19: 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 20 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 under...
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Page 21: Handle Settings
HTC 420 VS Operation 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 22: 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 13. Tip the machine backwards so that it rests against the ground. -
Page 23: Changing Grinding Tools
HTC 420 VS Operation 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 16. Then draw the tool up out of the... -
Page 24: Preparations For Dry Grinding
- see Figure 4-3 on page 15. 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 25: Preparations For Wet Grinding
HTC 420 VS Operation Note! The dust extractor can be connected to both sockets found on theprotective cover for the machine. If you only use one of the sockets, thesocket not in use should be covered. Adjust the capacity of the dustextractor to match the grinder. -
Page 26: Control
Operation HTC 420 VS 4.7. Control The machines functions can be controlled using the control panel - see Figure 3-3 on page 9. During operation, the operator pushes the grinder forward over the floor surface. 4.7.1. Standby In order to activate the machines functions, turn thePowerknob to“I”.Once the knob set to this position, the Power indicator on the... -
Page 27: Overload
HTC 420 VS Operation The machine has now started. 4.7.4. Overload If the machine is using too much power, the Overload indicator on the control panel goes off. The machine switches off automatically after a while if this is ignored. Reduce the speed of the grinding discs to see if the Overload indicator goes out. -
Page 28: 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 29: Maintenance And Repairs
HTC 420 VS Maintenance and repairs 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 30: 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 31: Troubleshooting
HTC 420 VS Troubleshooting 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 32: 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 33: Electronic Error Codes
See also the point below. Contact else inside the machine locks up. HTC Service Centre if the fault May also occur if the motor short remains. circuits. OHF = Rapidly rising current... - Page 34 Electronic error codes HTC 420 VS Error code Cause Action tnF = Autotuning fault Check the motor. Replace the motor May arise if the motor has been with an original motor. replaced by the wrong motor, which is outside the norm values for the converter.
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Page 35: Resetting The Frequency Converter
HTC 420 VS Electronic error codes Error code Cause Action OPF = Motor phase break Inspect the cable to the motor or the Occurs when the motor plug has terminal boxes in the motor. Reduce not been plugged in correctly or is the speed if you are test-operating loose. -
Page 36: Spare Parts
Spare parts HTC 420 VS 8. Spare parts 8.1. Chassis... - Page 37 Power unit 420 VS CE 1x230V 112194 Chassis, central section 112156 Wheel 583-200-513 grey 110855 Circlip SGA 20 310016 Pin, fixing lug HTC 420 VS 310374 Cotter pin, galv. 2x41 310147 Chassis, bottom 112155 Attachment tap 112169 Tap for grinder...
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Page 38: Handle
Spare parts HTC 420 VS 8.2. Handle... - Page 39 HTC 420 VS Spare parts Table 8-2:Handle spare parts list Pos. Description Item number Number Control plate 112163 Handle knob 112164 Bracket control panel, part of Power unit 420 112345 VS CE 3x400 V Bracket control panel, part of Power unit 420...
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Page 40: Grinding Head 1
Spare parts HTC 420 VS 8.3. Grinding head 1... - Page 41 Divisible plate HTC 420 VS 110658 Lifting handle 420 VS 110844 Splash guard width 100 mm 112419 Cover HTC 420 VS 112725 Washer M6 310012 Screw MC6S M6x10 galv. 31005 Skruv M6S M12x30 fzb 310128 Motor 2.2 kW HTC 420 VS 110722...
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Page 42: Grinding Head 2
Spare parts HTC 420 VS 8.4. Grinding head 2... - Page 43 Item number Number Screw MC6S M6x20 12.9 galv. 310027 Motor plate HTC 420 VS 110682 Nilos ring 6012 JV 10472 Bearing cover centre HTC 420 VS 110650 Ball bearing 6012 2RS1 C3 110026 Circlip SGA 60 310018 Circlip SGA 18 310117...
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Page 44: Grinding Holder
Spare parts HTC 420 VS 8.5. Grinding holder... - Page 45 Screw MFT 6x10 8.8 galv. 310233 Cylindrical rubber sleeve 112332 Screw MF6S M10x30 galv. 310146 Velcro fastening 112273 Grinding holder bottom HTC 420 VS 110656 Cross complete HTC 420 VS 111463 Washer 112270 Screw MC6S M10x35 310301 Nordlock washers NL10...
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Page 46: Technical Data
Technical data HTC 420 VS 9. Technical data The table below shows the machine’s technical data. HTC 420 VS HTC 420 VS HTC 420 VS (EU 230 V) (EU 3x400 V) (US 115 V) Motor 2,2 kW 2,2 kW 2,2 kW... - Page 47 HTC 420 VS Technical data Figure 9-2 Width of the machine in millimetres...
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Page 48: 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 49: Warranty And Ce Marking
Warranty and CE Marking 11. Warranty and CE Marking 11.1. 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 50 Warranty and CE Marking HTC 420 VS...