HTC GL 270 User manual

HTC GL 270/400/450/550
MANUAL
GB
Translation of manual in original language

The Greyline series

Contact Information
HTC Sweden AB
Box 69
SE-614 22 Söderköping - Sweden
Tel: [phone]
Fax: [phone]
You can find addresses for our retailers and service partners on our website:
www.htc-floorsystems.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.

EC Declaration of conformity
Manufacturer: HTC Sweden AB
Box 69
SE-614 22 Söderköping
Sweden
[phone]
Type of equipment: Grinding machine
Make: HTC
Model: HTC GL 270
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 2010 onward conforms to the applicable regulations
in directives MD 2006/42/EC, EMC 2004/108/EC and LVD 2006/95/EC. The following
standards have been used as a basis: ISO 5349-1:2001, ISO 5349-2:2001, ISO
20643:2005, ISO 3741.
This product was CE-marked in 2010. The technical documentation is available from
the manufacturer.
Original of the EC declaration of conformity (Swedish). Other languages are
translations of the original of the EC declaration of conformity.
Söderköping, 12-05-2010
Peter Lundgren
Development Manager,
HTC Sweden AB
Kåre Kilgren
Product Manager,
HTC Sweden AB

EC Declaration of conformity
Manufacturer: HTC Sweden AB
Box 69
SE-614 22 Söderköping
Sweden
[phone]
Type of equipment: Grinding machine
Make: HTC
Model: HTC GL 400
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 2010 onward conforms to the applicable regulations
in directives MD 2006/42/EC, EMC 2004/108/EC and LVD 2006/95/EC. The following
standards have been used as a basis: ISO 5349-1:2001, ISO 5349-2:2001, ISO
20643:2005, ISO 3741.
This product was CE-marked in 2010. The technical documentation is available from
the manufacturer.
Original of the EC declaration of conformity (Swedish). Other languages are
translations of the original of the EC declaration of conformity.
Söderköping, 12-05-2010
Peter Lundgren
Development Manager,
HTC Sweden AB
Kåre Kilgren
Product Manager,
HTC Sweden AB

EC Declaration of conformity
Manufacturer: HTC Sweden AB
Box 69
SE-614 22 Söderköping
Sweden
[phone]
Type of equipment: Grinding machine
Make: HTC
Model: HTC GL 450
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 2010 onward conforms to the applicable regulations
in directives MD 2006/42/EC, EMC 2004/108/EC and LVD 2006/95/EC. The following
standards have been used as a basis: ISO 5349-1:2001, ISO 5349-2:2001, ISO
20643:2005, ISO 3741.
This product was CE-marked in 2010. The technical documentation is available from
the manufacturer.
Original of the EC declaration of conformity (Swedish). Other languages are
translations of the original of the EC declaration of conformity.
Söderköping, 12-05-2010
Peter Lundgren
Development Manager,
HTC Sweden AB
Kåre Kilgren
Product Manager,
HTC Sweden AB

EC Declaration of conformity
Manufacturer: HTC Sweden AB
Box 69
SE-614 22 Söderköping
Sweden
[phone]
Type of equipment: Grinder
Make: HTC
Model: HTC GL 550
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 2010 onward conforms to the applicable regulations
in directives MD 2006/42/EC, EMC 2004/108/EC and LVD 2006/95/EC. The following
standards have been used as a basis: ISO 5349-1:2001, ISO 5349-2:2001, ISO
20643:2005, ISO 3741.
This product was CE-marked in 2010. The technical documentation is available from
the manufacturer.
Original of the EC declaration of conformity (Swedish). Other languages are
translations of the original of the EC declaration of conformity.
Söderköping, 12-05-2010
Peter Lundgren
Development Manager,
HTC Sweden AB
Kåre Kilgren
Product Manager,
HTC Sweden AB

HTC GL
270/400/450/550 Table of contents
i
1 Introduction 1
1.1 General ............................................................................ 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 ................................................... 2
1.7 Machine name plate ........................................................ 3
1.8 Handling and storage ...................................................... 3
1.9 Vibration and noise .......................................................... 4
1.9.1 Hand and arm vibrations .................................... 4
1.9.2 HTC GL 270 ....................................................... 4
1.9.3 HTC GL 400 ....................................................... 4
1.9.4 HTC GL 450 ....................................................... 4
1.9.5 HTC GL 550 ....................................................... 5
1.9.6 Sound pressure level .......................................... 5
2 Safety 6
2.1 General Information ......................................................... 6
2.2 Warnings ......................................................................... 6
2.3 Notes ............................................................................... 7
3 Machine description 9
3.1 General machine description ........................................... 9
3.2 Description of controls – Control panel ........................... 11

Table of contents
HTC GL
270/400/450/550
ii
4 Usage 13
4.1 General Information ......................................................... 13
4.2 Handle settings ................................................................ 14
4.3 Access to grinding tools .................................................. 15
4.4 Fitting and replacing grinding tools .................................. 15
4.4.1 Fitting grinding tools ........................................... 16
4.4.2 Changing grinding tools ...................................... 17
4.5 Preparations for dry grinding ........................................... 17
4.6 Separating and assembling the chassis and grinding
head ................................................................................ 18
4.6.1 HTC GL 270 ....................................................... 18
4.6.2 HTC GL 400, GL 450 and GL 550 ...................... 19
4.7 Operation ......................................................................... 19
4.7.1 Starting and stopping the machine ..................... 20
4.7.2 Emergency stop switch ...................................... 20
4.8 Making operation easier .................................................. 20
4.9 Edge grinder kit (accessory for HTC GL 270) ................. 21
4.9.1 Change to Edge Grinder Cover .......................... 21
4.9.2 Fitting the Edge Grinder Adapter ........................ 23
4.9.3 Positions for Edge Grinder Adapter .................... 24
5 Maintenance and repairs 26
5.1 General Information ......................................................... 26
5.2 Cleaning .......................................................................... 26
5.3 Daily ................................................................................ 26
5.4 Every week ...................................................................... 26
5.5 Every month (or 100 hours) ............................................. 27
5.6 Repairs ............................................................................ 27
5.7 Spare parts ...................................................................... 27
6 Faultfinding 28
6.1 General Information ......................................................... 28
6.1.1 The machine will not start ................................... 28
6.1.2 The machine vibrates or wears the tool
unevenly ............................................................. 28
6.1.3 The machine is grinding at an angle .................. 28
6.1.4 The fuses trip frequently ..................................... 28
6.1.5 The machine cannot cope .................................. 28
6.1.6 The machine grinds unevenly (only applies to
HTC GL 450 and HTC GL 550) .......................... 29

HTC GL
270/400/450/550 Table of contents
iii
7 Technical data 30
7.1 HTC GL 270 .................................................................... 30
7.2 HTC GL 400 .................................................................... 32
7.3 HTC GL 450 .................................................................... 34
7.4 HTC GL 550 .................................................................... 36
8 Environment 38
9 Warranty and CE marking 39
9.1 Warranty .......................................................................... 39
9.2 CE marking ...................................................................... 39

Table of contents
HTC GL
270/400/450/550
iv

HTC GL
270/400/450/550 Introduction
1.0 1
1 Introduction
1.1 General
The machine models in HTC's Greyline series are grinding machines that can be used to
grind, strip and clean all types of floors. The area of application for the machine
depends on the choice of tool.
Read the manual carefully, so you are totally familiar with the machine before you start
to use it. Contact your local retailer for further information. For contact information, see
Contact Information at the start of the manual.
1.2 Responsibility
Even though every effort has been made to make this manual as complete and accurate
as possible, we bear no responsibility for incorrect or missing information. HTC
reserves the right to change descriptions in this manual without giving prior notice.
This manual is protected by the Copyright Act and no part of it may be copied or used
in any other way without the written approval of HTC.
1.3 Manual
In addition to the general functions, this manual deals with the areas of application and
the maintenance of the grinder.
1.3.1 Safety instructions – Explanation of symbols
A number of symbols are used in the manual to highlight the most important sections,
see below. In order to avoid both personal injury and material damage as far as possible,
it is extremely important to read and understand the text next to these symbols
particularly carefully. There are other symbols indicating practical tips. These are to
help you use the machine in the easiest and most effective way.
The following symbols are used in the document to indicate where special attention is
needed.
Warning!
This symbol means Warning! and indicates that incorrect use can result in
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. This is to protect you and
other users and to avoid damaging the machine or other equipment.

Introduction
HTC GL
270/400/450/550
2 1.0
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. This is to avoid damage
to the machine or other equipment.
Tip!
This symbol means Tip!and indicates that you can get tips and advice on ways
to make operating your machine or associated equipment easier, and to avoid
wear. When you see this symbol you should read the accompanying text to
facilitate your work and increase the service life of the machine.
1.4 Transportation
The machine is best transported securely fastened to a pallet.
1.5 On delivery
The following items are included in the delivery. Contact you retailer if anything is
missing.
• Grinding machine
• Manual disc
• Hammer EZ system
• Face spanner (not for HTC GL 270 and HTC GL 400)
• Lock spring tool holder
• Allen key
• Gloves
• HTC Cap
1.6 Unpacking the machine
Warning!
Read through the safety instructions and the manual carefully before use.

HTC GL
270/400/450/550 Introduction
1.0 3
• 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.
• Check that the delivery matches the order. If there are any discrepancies, contact
your retailer.
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
1. Model
2. Model number
3. Serial number
4. Year of manufacture
5. Power (kW)
6. Voltage (V)
7. Current (A)
8. Frequency (Hz)
9. Rotational speed (r.p.m.)
10. Weight (kg)
11. Address field
1.8 Handling and storage
The machine should be stored in a dry, warm location when not in use. Otherwise it may
become damaged by condensation and coldness.

Introduction
HTC GL
270/400/450/550
4 1.0
1.9 Vibration and noise
Warning!
Always use ear muffs when using the machine.
1.9.1 Hand and arm vibrations
Hand and arm weighted vibration level [m/s²] for HTC GL 550 HTC GL 450 HTC GL
400 HTC GL 270 have been measured with equipment approved according to ISO
5349-1:2001. The measurement uncertainty for the measurement apparatus has been
measured as +/- 2%.
The machine has been tested in accordance with ISO 5349-2:2001 and ISO 20643:2005
in order to identify the operations that contribute to the most frequent vibration
exposures. At vibration levels > 2.5 m/s², the exposure time should be limited in
accordance with the table below. For vibration levels > 5 m/s², immediate measures
should be taken by the employer to ensure that the exposure time does not exceed the
time specified in the table below.
1.9.2 HTC GL 270
Identified work conditions Measured values
[m/s²]
Daily permitted exposure
(number of hours)
Grinding/polishing 2,43 Unrestricted
Floor preparation (T-rex) 9,37 2,28
1.9.3 HTC GL 400
Identified work conditions Measured values
[m/s²]
Daily permitted exposure
(number of hours)
Grinding/polishing 2,77 Unrestricted
Floor preparation (T-rex) 4,83 8,56
1.9.4 HTC GL 450
Identified work conditions Measured values
[m/s²]
Daily permitted exposure
(number of hours)
Grinding/polishing 1,16 Unrestricted
Floor preparation (T-rex) 2,35 Unrestricted

HTC GL
270/400/450/550 Introduction
1.0 5
1.9.5 HTC GL 550
Identified work conditions Measured values
[m/s²]
Daily permitted exposure
(number of hours)
Grinding/polishing 2,5 Unrestricted
Floor preparation (T-rex) 3,87 13,4
1.9.6 Sound pressure level
This machine has been tested for noise in accordance with ISO 3741. For information
on sound pressure levels, see the table in chapter Technical data, page 30.

Safety
HTC GL
270/400/450/550
6 1.0
2 Safety
2.1 General Information
This chapter contains all the warnings and notes that should be considered for HTC GL
270, HTC GL 400, HTC GL 450, HTC GL 550.
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.
Warning!
Never use the machine in an environment with a risk of explosion or fire.
Familiarise yourself with the fire-protection instructions for the working area
and follow them.
Warning!
Secure the area around the working area. No unauthorised persons should be
allowed within a 15-metre radius of the machine. If a loose object were to catch
under the grinding head, this could be flung out and cause personal injury.
Warning!
Use protective equipment such as safety shoes, safety goggles, protective
gloves, breathing mask and ear muffs.
Warning!
The machine must only be started with the grinding head down. The rotating
disc must be touching the floor and the correct tool must be fitted.
Warning!
Read through the safety instructions and the manual carefully before use.
Warning!
Always use ear muffs when using the machine.
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 changing tools or repairing the machine.

HTC GL
270/400/450/550 Safety
1.0 7
Warning!
The machine must only be used and moved on level surfaces. There is a risk of
crushing if the machine starts to roll.
Warning!
Connect the machine to an earth fault breaker.
Warning!
Do not clean the machine using a high-pressure washer. Otherwise moisture
may penetrate electrical elements and damage the machine’s drive system.
Warning!
Always ensure that the machine's connection cable is hanging freely without
any tensile loading. Otherwise, the cable, coupling socket and plug may be
damaged, which can cause both physical damage and personal injury.
Warning!
Always ensure that the machine's handle is in the upright position when the
machine is tipped to enable access beneath the grinding head. Otherwise, there
is a risk that the machine could fall back and cause personal injury.
Warning!
The lifting handles on the motor are intended for lifting the grinding head,
when it is separated from the chassis, and then only for short, low lifts, e.g. into
the boot of a car. The lifting handles are not to be used for lifting the complete
machine.
2.3 Notes
Note!
The machine may only be used to grind, strip and clean floor coverings and
other materials that are stated in this manual or materials that are recommended
by 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.
Note!
For the CE marking to be valid, the instructions in this manual must be
followed.

Safety
HTC GL
270/400/450/550
8 1.0
Note!
The machine may only be lifted using the lifting eye on the chassis in
accordance with the relevant instructions.
Note!
Make sure that the floating cover can move freely within its movement margins
and that the cover rests on the floor before starting the machine.
Note!
The machine should be stored in a dry, warm (plus degrees) location when not
in use.
Note!
If the machine is stored in a cold (minus degrees) location, it must be placed in
a warm (plus degrees) location for at least two hours before use.
Note!
The appropriated dust extractor must be used when dry grinding. Contact HTC
for model recommendation.
Note!
The dust extractor's suction hose must be connected to the appropriate socket
on the machine. Adjust the dust extractor to match the grinder's capacity.
Note!
Do not use the emergency stop switch to stop the machine, except in
emergencies.
Note!
As long as the emergency stop switch is pressed in, the machine cannot be
started. Reset by turning the switch 45° clockwise so that it pops out again. The
machine can then be restarted.
Note!
Check that all the parts are correctly attached and that all the screws are
tightened properly before the machine is started.
Note!
After removing glue, always lift the grinding heads so they do not stick to the
floor and damage machine components or the floor when the machine is
restarted.