HTC 950 RX User manual

HTC 950 RX
MANUAL
GB
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.
© 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 950 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 2004 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 2004. 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, 01-01-2010
Peter Lundgren
Development Manager,
HTC Sweden AB
Kåre Kilgren
Product Manager,
HTC Sweden AB

HTC 950 RX 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 ................................................... 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 .................................... 4
1.9.2 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
3.3 Description of controls – Radio control unit ..................... 13

Table of contents HTC 950 RX
ii
4 Usage 15
4.1 General Information ......................................................... 15
4.2 Handle settings ................................................................ 16
4.3 Wheel locking .................................................................. 17
4.4 Handling weights ............................................................. 18
4.5 Access to grinding tools .................................................. 20
4.6 Fitting and replacing grinding tools .................................. 23
4.6.1 Fitting grinding tools ........................................... 24
4.6.2 Changing grinding tools ...................................... 25
4.7 Preparations for dry grinding ........................................... 25
4.8 Preparations for wet grinding .......................................... 26
4.9 Manoeuvring via the control panel .................................. 27
4.9.1 Standby .............................................................. 27
4.9.2 Emergency stop switch ...................................... 27
4.9.3 Start the machine - Manual driving ..................... 27
4.9.4 Overload ............................................................. 28
4.10 Manoeuvring via the radio control panel ......................... 28
4.10.1 Standby .............................................................. 29
4.10.2 Start the Machine - Radio Control ...................... 29
4.10.3 Stop the machine - Radio control ....................... 30
4.10.4 Changing the radio frequency ............................ 30
4.10.5 Interrupted radio communication ........................ 31
4.11 Making operation easier .................................................. 31
5 Maintenance and repairs 33
5.1 General Information ......................................................... 33
5.2 Cleaning .......................................................................... 33
5.3 Charging the machine's battery ....................................... 33
5.4 Charging/replacing the radio control unit's batteries ....... 33
5.5 Daily ................................................................................ 34
5.6 Every week ...................................................................... 34
5.7 Every month (or 100 hours) ............................................. 35
5.8 Repairs ............................................................................ 35
5.9 Spare parts ...................................................................... 35

HTC 950 RX Table of contents
iii
6 Faultfinding 36
6.1 General Information ......................................................... 36
6.1.1 The machine will not start ................................... 36
6.1.2 The machine vibrates or wears the tool
unevenly ............................................................. 36
6.1.3 The machine is grinding at an angle .................. 36
6.1.4 The machine stops - manual operation .............. 36
6.1.5 The machine stops - radio control ...................... 36
6.1.6 The fuses trip frequently ..................................... 37
6.1.7 The machine cannot cope .................................. 37
7 Electronic error codes 38
7.1 General Information ......................................................... 38
7.2 Schneider Electric ATV31 ................................................ 38
7.2.1 Resetting the frequency converter ..................... 40
7.2.2 Checking the last error code .............................. 40
7.3 Schneider Electric ATV312 .............................................. 40
7.3.1 Resetting the frequency converter ..................... 41
7.3.2 Checking the last error code .............................. 41
8 Technical data 42
9 Environment 44
10 Warranty and CE marking 45
10.1 Warranty .......................................................................... 45
10.2 CE marking ...................................................................... 45

Table of contents HTC 950 RX
iv

HTC 950 RX Introduction
1.0 1
1 Introduction
1.1 General
HTC 950 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 at the same time as 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 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.

Introduction HTC 950 RX
2 1.0
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.
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
Note!
The machine cannot be moved manually if the drive wheels are locked and the
radio control activated.
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.
The machine is best transported securely fastened to a pallet.The machine can also be
moved short distances using the inbuilt battery drive. The battery capacity is sufficient
to transport the machine for ca. 30 minutes.
The machine can also be transported by lifting equipment, for example truck of crane,
using the lifting eyes provided. 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.
1.5 On delivery
The following items are included in the delivery. Contact you retailer if anything is
missing.

HTC 950 RX Introduction
1.0 3
• Grinding machine
• Manual
• Locking key for control cabinet
• Start key
• Hammer EZ system
• Splash guard
• The radio control unit
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 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

Introduction HTC 950 RX
4 1.0
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.
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 950 RX 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.
Identified work conditions Measured values [m/s²] Daily permitted exposure
(number of hours)
Grinding/polishing 3,58 15,6
Floor preparation (T-rex) 5,44 6,76

HTC 950 RX Introduction
1.0 5
1.9.2 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 42.

Safety HTC 950 RX
6 1.0
2 Safety
2.1 General Information
This chapter contains all the warnings and notes that should be considered for HTC 950
RX .
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 950 RX 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!
The operator must never leave the machine unattended.
Warning!
The machine may only be used when the splash guard is fitted.
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.
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 (minus degrees) location, it must be placed in
a warm (plus degrees) location for at least two hours before use.

Safety HTC 950 RX
8 1.0
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!
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.
Note!
When wet grinding, the water tank must be filled with water. Only use cold
water with no chemical additives.

HTC 950 RX Machine description
1.0 9
3 Machine description
3.1 General machine description
HTC 950 RXIs 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 of 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 discharging of the dust separator can be performed while the
machine is radio controlled.The machine is also light and easy to transport, load and
unload because of the inbuilt battery operation.
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 grinding cover has a connection for an external suction hose used for dry grinding.
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.
HTC 950 RXcan be equipped with a 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 950 RX
10 1.0
Figure 3-1. The front of the machine
1. Handle
2. Handle lock
3. Lifting eye
4. Cover
5. Motor
6. Weights
7. Grinding cover
8. Splash guard
9. Weight lock
10. Water connection

HTC 950 RX Machine description
1.0 11
Figure 3-2. The machine's rear
1. Control panel
2. Electrical connection
3. Extraction connection
4. Weight lock
5. Control cabinet
6. Drive motor box
7. Driving lock
3.2 Description of controls – Control panel
The picture below shows the machine's control panel:

Machine description HTC 950 RX
12 1.0
Figure 3-3. 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: Press the switch in an emergency 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" must always be turned to the
Stop position and the knob "Radio On/Off" (5) is always turned to the Off position. The
knob (5) being in the Off position is indicated by the "Radio Enabled" (4) indicator
going out.