HTC Sweden AB 650 RX User manual

www.htc-floorsystems.com/support
MANUAL
HTC 650 RX
Translation of manual in original language

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.
© 2013 HTC Sweden AB. All rights reserved.

EC Declaration of conformity
Manufacturer: HTC Sweden AB
Box 69
SE-614 22 Söderköping
Type of equipment: Grinding Machine
Make: HTC
Trademark: HTC 650 RX
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 2012 and onward conforms to the applicable
regulations in directives MD 2006/42/EC, EMC 2004/108/EC as well as 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, ISO 11202.
The product was CE marked in 2009. 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 01.01.10
Peter Lundgren
Development Manager
HTC Sweden AB
Kåre Kilgren
Product Manager
HTC Sweden AB

HTC 650 RX Table of contents
i
1 Introduction 1
1.1 General ............................................................................ 1
1.2 Liability ............................................................................ 1
1.3 Manual ............................................................................. 1
1.3.1 Safety explanations - explanation of symbols .... 1
1.4 Transportation ................................................................. 2
1.5 On delivery ...................................................................... 3
1.6 Unpacking the equipment ................................................ 3
1.7 Machine name plate ........................................................ 3
1.8 Handling and storage ...................................................... 4
1.9 Vibration and noise .......................................................... 4
1.9.1 Hand and arm vibrations .................................... 5
1.9.2 Sound power level .............................................. 5
2 Safety 6
2.1 General ............................................................................ 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
3.3 Description of controls - Radio control unit ...................... 13

Table of contents HTC 650 RX
ii
4 Operation 15
4.1 General ............................................................................ 15
4.2 Handle setting ................................................................. 16
4.3 Locking the wheels .......................................................... 17
4.4 Handling weights ............................................................. 18
4.5 Access to grinding tools .................................................. 20
4.6 Fitting and replacing grinding tools .................................. 21
4.6.1 Fitting grinding tools ........................................... 22
4.6.2 Changing grinding tools ...................................... 23
4.7 Preparations for dry grinding ........................................... 24
4.8 Preparations before grinding with Mist-Cooler ................ 24
4.9 Preparations for wet grinding .......................................... 25
4.10 Manoeuvring via the control panel .................................. 25
4.10.1 Emergency stop switch ...................................... 26
4.10.2 Start the machine - manual driving ..................... 26
4.10.3 Overload ............................................................. 26
4.11 Manoeuvring via the radio control panel ......................... 27
4.11.1 Preparation ......................................................... 27
4.11.2 Start the Machine - Radio Control ...................... 27
4.11.3 Stop the machine - Radio control ....................... 28
4.11.4 Changing the radio frequency ............................ 29
4.11.5 Interrupted radio communication ........................ 29
4.12 Making operation easier .................................................. 29
5 Maintenance and repairs 31
5.1 General ............................................................................ 31
5.2 Cleaning .......................................................................... 31
5.3 Charging/replacing the radio control unit's batteries ....... 31
5.4 Daily ................................................................................ 32
5.5 Every week ...................................................................... 32
5.6 Every month (or after 100 hours) .................................... 32
5.7 Repairs ............................................................................ 33
5.8 Spare parts ...................................................................... 33

HTC 650 RX Table of contents
iii
6 Troubleshooting 34
6.1 General ............................................................................ 34
6.2 The machine will not start ................................................ 34
6.3 The machine vibrates or wears the tools unevenly ......... 34
6.4 The machine is grinding at an angle ............................... 34
6.5 The machine stops immediately after starting ................. 34
6.6 The machine stops - manual operation ........................... 35
6.7 The machine stops - radio control ................................... 35
6.8 The fuse trips frequently .................................................. 35
6.9 The machine cannot cope ............................................... 35
7 Electronic error codes 36
7.1 Error Codes ..................................................................... 36
7.2 Schneider Electric ........................................................... 37
7.2.1 Resetting the frequency converter ..................... 37
7.2.2 Checking the last error code .............................. 37
8 Technical data 38
9 Environment 41
9.1 Chassis ............................................................................ 41
9.2 Grinding head .................................................................. 41
9.3 Electrical system ............................................................. 41
9.4 Recycling ......................................................................... 41
10 Warranty and CE marking 42
10.1 Warranty .......................................................................... 42
10.2 CE marking ...................................................................... 42

Table of contents HTC 650 RX
iv

HTC 650 RX Introduction
5.0 1
1 Introduction
1.1 General
HTC 650 RX (R = Radio control, X = Four grinding discs) 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. You can easily mount and
replace the tool, thanks to the EZchange patented tool system.
The radio control means the operator is not affected by any vibrations from the
machine. Moreover, the grinding work is more effective since, for instance, emptying
the dust separator and handling the cables can be done while the machine is grinding.
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 Liability
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 the descriptions contained in this manual without 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 explanations - explanation of symbols
A number of symbols are used in the manual to highlight the most important sections,
see below. It is important that you carefully read through the descriptions of the symbols
in order to avoid the risk of both material damage and personal injury. There are also
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.

Introduction HTC 650 RX
2 5.0
Warning!
This symbol means Warning! and indicates a risk of personal injury or material
damage in the event of incorrect use of the machine. 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 for your
own and other users' safety and to avoid damage to the machine.
Note!
This symbol means Note! and indicates a potential risk of material damage in
the event of incorrect use of the machine. 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 machine.
Tip!
This symbol means Tips! and implies the inclusion of tips and advice on
effective use of the machine or ways of reducing wear and tear to the machine.
If you see this symbol next to a text, you should read through the text to make
your work easier and to extend the service life of the machine.
1.4 Transportation
Warning!
Never deactivate the radio control function when you have stopped the machine
on a sloping surface during loading, since the machine can start to roll.
Note!
The machine cannot be moved manually if the drive wheels are locked and the
radio control activated.
Always make sure that the grinder is securely anchored to its surroundings and the
grinding head is lowered against the surface. Make sure that the securing straps, or other
equipment used for anchoring during transport, are tightened over non-moving parts,
e.g. the grinder's chassis.
The machine can also be transported with other lifting equipment, for example truck or
crane, using the lifting eyes provided, position 3, Figure3-1, page10. In which case,
make sure that the weights are locked in the forward position and that the handle is in its
back position, seeFigure4-5, page19andFigure4-2, page17.
When lifting the grinder, lifting straps must be used. These must be attached
well-secured in the lifting eyes provided, position 3, Figure3-1, page10. Only use
lifting straps approved for lifting equipment.

HTC 650 RX Introduction
5.0 3
Do not transport the grinder on sloping surfaces, e.g. loading ramps, without securing it
by the lifting eyes, position 3, Figure3-1, page10 for example with a winch. This is a
safety measure in case the grinder starts to roll out of control. Also make sure that
people (including operator) in the vicinity are at a safe distance in order to prevent
personal injury, in the event that the grinder starts to roll out of control.
1.5 On delivery
The following items are included in the delivery. Contact your retailer if anything is
missing.
• Grinding machine
• Manual disc
• Locking key for control cabinet
• Start key
• Hammer EZ system
• The radio control unit
1.6 Unpacking the equipment
Warning!
Read carefully through the safety instructions and user manual before using the
equipment.
• Check the packaging and equipment carefully on delivery for any possible
transportation damage. 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.
• When lifting the grinder, lifting straps must be used. These must be attached
well-secured in the lifting eyes provided, position 3, Figure3-1, page10. Only
use lifting straps approved for lifting equipment.
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.

Introduction HTC 650 RX
4 5.0
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 equipment should be stored in a heated, dry area when not in use. Otherwise it may
be damaged by condensation and cold.
When lifting the grinder, lifting straps must be used. These must be attached
well-secured in the lifting eyes provided, position 3, Figure3-1, page10. Only use
lifting straps approved for lifting equipment.
1.9 Vibration and noise
Warning!
Always use hearing protection when using the machine.

HTC 650 RX Introduction
5.0 5
1.9.1 Hand and arm vibrations
Hand and arm-weighted vibration level [m/s² for HTC 650 RX have been measured
using equipment approved in accordance with ISO 5349-1:2001. Measurement
uncertainty for the measuring equipment is given 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
must be taken by the employer to ensure that the exposure time does not exceed the
time specified in the table below.
Identified work conditions Measured values [m/s²] Daily permitted exposure
(number of hours)
Grinding/polishing 5,45 6,74
Floor preparation (T-rex) 5,49 6,63
1.9.2 Sound power level
This machine is tested for noise in accordance with ISO 3741 and ISO 11202. For
information on the sound power level and sound pressure level for each model, see the
table in chapter Technical data, page38.

Safety HTC 650 RX
6 5.0
2 Safety
2.1 General
This chapter contains all of the warnings and observations that should be taken into
consideration for HTC 650 RX.
2.2 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.
Warning!
Never use the machine in an environment where there is 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 machine. No unauthorised persons should be within
a 15-metre radius of the machine. If loose objects get under the grinding head,
these may be flung out and cause personal injury.
Warning!
Use safety equipment such as safety shoes, safety glasses, protective gloves,
respiratory protection and hearing protection.
Warning!
Always make sure that a dust extractor is connected to the grinder during dry
grinding to prevent, as far as possible, exposing the operator, people in the
vicinity, the grinder and other equipment to dust particles. Exposure to dust
particles can cause personal injury and also damage to physical equipment.
Warning!
Only start the machine with the grinding head lowered.
Warning!
Read through the safety instructions and the manual carefully before use.
Warning!
Always use hearing protection when using the machine.

HTC 650 RX Safety
5.0 7
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.
Warning!
The machine may only be used and moved on horizontal surfaces. There is a
risk of crush injuries if the machine starts to roll.
Warning!
The machine must be connected to a residual current device.
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!
The operator must never leave the machine unattended.
Warning!
When working on an elevated surface where there is a risk of falling, the edges
of the surface must be secured. The values for the machine's thrust and load
capacity as well as the driving speed are given in the table for the machine's
technical data in the chapter "Technical Data".
2.3 Notes
Note!
The machine may only be used to grind and polish natural stone, terrazzo,
concrete, or other materials stated in this manual or that are approved 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 650 RX
8 5.0
Note!
The machine must only be lifted using the lifting eye intended for the purpose
in accordance with the relevant instructions.
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 area (below zero), it must be kept in a warm
area (above zero) for at least two hours before use.
Note!
When dry grinding, a suitable dust extractor should be used. 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. 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!
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.

HTC 650 RX Machine description
5.0 9
3 Machine description
3.1 General machine description
HTC 650 RX are designed for grinding in large spaces. It is used to grind, coarse grind,
prepare and polish concrete, natural stone and terrazzo floors or other materials
specified in this manual or material recommended by HTC. The machine is a perfect
choice for removing coverings and grinding concrete floors according to the HTC
Superfloor method, which is an environmentally-friendly method for grinding and
polishing concrete floors.
Thanks to the fact the machine can be operated with the help of radio control, the work
is significantly simplified and the grinding time lengthened. Furthermore, the work is
more effective, since the dust extractor can be emptied while the machine is radio
controlled.
The machine is constructed from a number of main components, see Figure3-1, page
10 and Figure3-2, page11. Since it is equipped with four grinding discs, the
machine is balanced and easy to use, which results in more efficient stripping and better
grinding results. It also has an integrated weight system for adjusting the grinding
pressure, which makes the machine perfect for those with high demands for flexibility.
The handle can be set in a number of different tilt positions. Choose a position that suits
you best, when you want to operate the machinery manually.
The machine's grinding head is covered by a floating grinding cover to guarantee that
the operator will not come into contact with rotating machine parts, and also that
exposure to dust is minimised. The cover together with the connected vacuum system
constitute the preconditions for a good work environment. The cover has a moveable
overlap section with the purpose of optimising the dust uptake, since the cover is always
in contact with the surface.
Always make sure that a dust extractor is connected to the grinder during dry grinding
to prevent as far as possible exposure to dust particles of operators, people in the
vicinity, the grinder and other equipment.
The machine can be easily equipped with a large number of tools, depending on the
floor material to be ground. For other tools available, go to HTC's website
www.htc-floorsystems.com for more information.
HTC 650 RX is equipped with the Mist Cooler system for effective cooling of the
grinding tools. This system enables a very fine water mist to be diffused through a
nozzle onto the floor surface, which cools the tools, making the grinding more effective.

Machine description HTC 650 RX
10 5.0
Figure 3-1. The front of the machine
1. Handle
2. Handle lock
3. Water tank
4. Lifting eye
5. Motor
6. Weights (grinding pressure)
7. Mouthpiece Mist Cooler
8. Floating grinding cover outer moveable section
9. Floating grinding cover inner fixed section
10. Water tap, Mist Cooler

HTC 650 RX Machine description
5.0 11
Figure 3-2. The machine's rear
1. Control panel
2. Electrical connection
3. Extraction connection
4. Hour counter
5. Mist-Cooler On/Off
6. Control cabinet
7. Drive motor box
8. Locking pin, Driving
9. Water tap, wet spraying
10. Locking pin, weights (grinding pressure)
3.2 Description of controls - control panel
The picture below shows the machine's control panel:

Machine description HTC 650 RX
12 5.0
Figure 3-3. Description of controls - Control panel
1. Power - Standby indicator: Indicates that the machine's functions have been
activated. Shines with a green glow when the start key (9) is turned to the right
(On).
2. Overload - Overload indicator: Lights up to indicate that the machine is using
too much power. If this is ignored, the power supply to the motor will be
interrupted and an error code generated.
3. Com Error- Communication error indicator: Lights when there is a
communication error between the grinding machine and the radio control unit.
4. Radio Enabled- Radio control indicator: Lights when the knob "Radio
On/Off" is turned to the right (On).
5. Radio On/Off- Turn the knob to the right when the grinding machine is to be
manoeuvred via radio control.
6. Speed - Rotation speed: Regulates the rotational speed of the machine's
grinding discs. This is only possible when the grinding discs rotation is started
via the "Start/Stop" knob.
7. Start/Stop- Start/stop the grinding discs' rotation. Turn the knob to "Start" to
start the rotation, turn the knob to "Stop" to switch off the rotation.
8. EM-Stop - Emergency stop switch: In an emergency, press the switch to cut
the power to the machine.
9. On/Off - Start key to start/stop the machine's functions: Turn the key to the
right (On) to activate the machine's functions and prepare for starting. Turn the
knob to the left (Off) to switch off the machine's functions.
When the machine is not to be used, the knob "Start/Stop" (7) must always be turned to
the Stop position and the knob "Radio On/Off" (5) must always be turned to the Off
position. The knob (5) being in the Off position is indicated by the "Radio Enabled" (4)
indicator going out.