HTC 420 VS User manual
MANUAL
HTC 420 VS
GB
Contact Information
HTC Sweden AB
Box 69
SE-614 22 Söderköping - Sweden
Tel: +46 (0) 121-294 00
Fax: +46 (0) 121-152 12
You can find addresses for our retailers and service partners on our
website:
www.htc-sweden.com
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.
© 2007 HTC Sweden AB. All rights reserved.
Declaration of conformity
In accordance with EMC 2004/108/EC, LVD 2006/95/EC, MD
2006/42/EC
Type of equipment Grinder
Make HTC
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.
Sten Jeansson, CEO
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................................................... 3
1.9 Vibrations and noise..................................................... 3
2. Safety...................................................................4
2.1 General......................................................................... 4
2.2 Warnings....................................................................... 4
2.3 Observations.................................................................5
3. Machine description.......................................... 7
3.1 General machine description........................................7
3.2 Description of controls – Control panel........................ 9
4. Operation...........................................................11
4.1 General....................................................................... 11
4.2 Handle settings........................................................... 13
4.3 Access to grinding tools............................................. 13
4.4 Fitting and replacing grinding tools.............................14
4.4.1 Fitting grinding tools........................................... 14
4.4.2 Changing grinding tools......................................15
4.5 Preparations for dry grinding...................................... 16
4.6 Preparations for wet grinding..................................... 17
4.7 Control........................................................................ 18
4.7.1 Standby ............................................................. 18
4.7.2 Emergency stop switch...................................... 18
4.7.3 Starting the machine.......................................... 18
4.7.4 Overload............................................................. 19
4.8 Making operation easier............................................. 20
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.................................. 23
6.1.2 The machine vibrates or wears the tool
unevenly.......................................................................23
6.1.3 The machine is grinding unevenly......................23
6.1.4 The machine stops immediately after
starting......................................................................... 24
6.1.5 The fuses trip frequently.....................................24
6.1.6 The machine cannot cope.................................. 24
7. Electronic error codes.....................................25
7.1 General....................................................................... 25
7.2 Resetting the frequency converter..............................27
7.3 Checking the last error code...................................... 27
8. Spare parts....................................................... 28
8.1 Chassis....................................................................... 28
8.2 Handle.........................................................................30
8.3 Grinding head 1..........................................................32
8.4 Grinding head 2..........................................................34
8.5 Grinding holder........................................................... 36
9. Technical data.................................................. 38
10. Environment................................................... 40
11. Warranty and CE Marking............................. 41
11.1 Warranty ...................................................................41
11.2 CE marking............................................................... 41
HTC 420 VS Introduction
2.0 1
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.
Read through this manual carefully so that you know how to use
and maintain the machine before using it. Contact your retailer for
more information. For contact information, see Contact Information
at the start of the manual.
1.2. Liability
Although every effort has been made to ensure that the information
in this manual is correct and complete, we accept no responsibility
for errors or omissions. HTC reserves the right to change the
descriptions contained in this manual without prior notice.
This manual is protected by copyright law and no part of it may be
copied or used in any way without the written approval of HTC.
1.3. Manual
In addition to general functions, this manual deals with areas of
application and maintenance of the grinder.
1.3.1. Safety instructions – explanation of symbols
In order to clearly mark particularly important sections, there are
a number of symbols in the manual – see below. In order to avoid
both personal injury and material damage as much as possible, it is
extremely important to read and understand the text next to these
symbols particularly carefully. Practical tips are also marked with a
symbol. These tips are to make it easier to use the machine and to
get maximum benefit from it.
The following symbols are used in the document to highlight for
the reader when to be observant.
This symbol means Warning! and indicates a risk of personal
injury or material damage in the event of incorrect use of the
machine or associated equipment. If you see this symbol next to
Introduction HTC 420 VS
2 2.0
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.
This symbol means Note! and indicates a potential risk of material
damage in the event of incorrect use of the machine or associated
equipment. If you see this symbol next to 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 to avoid
damage to the machinery or other equipment.
This symbol means Tip! You can get tips and advice on ways
to make operating your machine or associated equipment easier,
and to avoid wear. If you see this symbol next to a section of text,
you should read through the text to make your work easier and to
extend the service life of the machine.
1.4. Transportation
The machine is best transported secured to a load pallet.
1.5. On delivery
The following items are included on delivery. Contact your retailer
if anything is missing.
• Grinder
• Manual
• Locking key for control cabinet
• Hammer EZ system
• Splash guard
• Electrical cable with contact
• EZ Grinding holders
• Upper belt (spare part)
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