Pentruder 6-12HF User manual

Operator’s manual
Pentruder® 6-12HF wall saw
Pentpak®high frequency power pack

Operators manual for the Pentruder 6-12HF and Pentpak HF-power pack – Original instructions Page 1
Operator’s manual for
Pentruder® 6-12HF-wall saw and
Pentpak®high frequency power pack
Version: 1.9 Date: 2012-03-05
Support & Service document
Original instructions
Copyright © 1997-2012 Tractive AB.
Pentruder and Pentpak are registered trademarks belonging to Tractive AB.
Contents
Introduction...................................................................................................................................... 2
Description of the machine............................................................................................................. 3
Saw head Pentruder 6-12HF with accessories.......................................................................... 3
Quick disconnect coupling for mounting of the saw blade (Patent)....................................... 6
Tracks and brackets..................................................................................................................... 7
Blade guard................................................................................................................................... 8
Pentpak high frequency (HF)-power pack ................................................................................. 9
Design, function and special features of the Pentpak HF-power pack....................................... 9
Intended use of the Pentruder 6-12HF and Pentpak HF-power pack....................................... 10
Safety precautions ..................................................................................................................... 10
Getting started ............................................................................................................................... 12
Preparations before commencing work................................................................................... 12
Preparation and mounting of track feet and tracks ................................................................ 14
Mounting the saw head on the track ........................................................................................ 16
Quick disconnect coupling for HF-motor on saw head.......................................................... 17
Quick disconnect coupling for the saw blade......................................................................... 18
Function principle:..................................................................................................................... 18
How to fit a blade on a standard blade flange: ......................................................................... 19
How to fit a blade on a flush cutting flange:.............................................................................. 20
Mounting the blade with flange on the machine spindle........................................................... 21
Peripheral cutting speed and spindle speed........................................................................... 21
How to choose correct gear and cutting speed ........................................................................ 22
How to shift gears in the 2-speed gearbox:.............................................................................. 24
Mounting the blade guard ......................................................................................................... 25
Preparing the power pack ......................................................................................................... 26
LED type warning lights on the power pack............................................................................ 28
Remote control unit ................................................................................................................... 32
Maintenance................................................................................................................................... 34
Technical data Pentruder 6-12HF - HF-wall saw ......................................................................... 38
Technical data Pentpak HF power pack ...................................................................................... 39
Declaration of Conformity............................................................................................................. 40

Operators manual for the Pentruder 6-12HF and Pentpak HF-power pack – Original instructions Page 2
Introduction
Thank you very much for your confidence in our product! You have chosen to invest in a product
which will give you many years of efficient and profitable production. The Pentruder 6-12HF has
been developed based on more than 25 years of experience in this specialised field. With correct
handling it offers outstanding performance, safety and reliability.
It is essential that all personnel working with, or in close proximity to, the saw have read and
understood the contents of this manual before commencing operations. Only by reading and
understanding the manual will the operator be able to take advantage of the many features and
benefits of the Pentruder 6-12HF. We are confident that your investment in this equipment and its
many design features will enhance your companies’ competitive edge and profitability!
The first section of this manual, page 1-2, contains the table of contents and an introduction of the
machine.
The second section of this manual, page 3-11, contains a general description of the machine and
explains the different features which make the Pentruder 6-12HF to one of the safest and most
efficient machines available on the market today.
The third section of this manual, page 12-33, contains a description how to get started with the
machine. Please take careful note of the Safety Precautions.
The fourth section of this manual, page 34-41, contains instructions how to maintain the
equipment, and technical data.
Important! When you read this manual it is important that you read and understand what is
said about safety under the headlines ”Important”. In those paragraphs beginning with
”Important” we inform about risks connected with use of the machine, and, if the safety
precautions are not respected, can result in damage to property and persons in close proximity
to the machine.
Warning! When you read this manual it is important that you read and understand what is said
about safety under the headlines ”Warning”. In those paragraphs beginning with ”Warning”
we inform about risks connected with use of the machine, and, if the safety precautions are not
respected, can result in serious injury and even to fatal injuries to persons in close proximity to
the machine,.
To avoid serious or even fatal injury to the operator and persons in close proximity to the
machine, it is important that the machine always is operated by trained, responsible personnel.

Operators manual for the Pentruder 6-12HF and Pentpak HF-power pack – Original instructions Page 3
Description of the machine
The Pentruder 6-12HF represents a very modern
and safe type of concrete wall saw. The Pentruder
6-12HF was developed and manufactured by
Tractive AB in Sweden in a process where safety
awareness, performance and reliability were the
most important design parameters.
By taking advantage of experience and know-how
built up over many years in this specialised field, this
new design can offer the user great advantages, for
example the markets best performance to weight
ratio.
The Pentruder 6-12HF offers outstanding quality. It
is the culmination of exacting goals for quality and
safety set at every stage from concept to finished
product.
Saw head Pentruder 6-12HF with
accessories
The Pentruder 6-12HF is the overall most efficient machine for concrete cutting in it’s size available
on the market today. When the overall efficiency of the system is evaluated, all aspects of the work
must be considered. The features of the 6-12HF mentioned below all contribute to make your work
safer, easier and more efficient.
Low weight, only 21 kg for the saw head less motor, and 13 (28.6) kg for the 15 kW (20 HP) or
16.5 (36 lbs) for the 18kW (24HP) motor. For efficient cutting with blades from Ø 800 (32”) to
1200 mm (48”) diameter.
Lightweight saw head built from aircraft quality components machined from solid aluminium. No
castings are used.
Pos A. Quick release coupling for HF-motor on saw head. To put the motor on the saw head or
to remove it takes just a few seconds.
Pos B. Quick release mechanism of saw head to and from track. Eccentric rollers on the saw
head allow it to be fitted and removed from the track with ease.
Pos C. Superior blade mounting system by patented quick release coupling.
Pos D. 2-speed gearbox for optimum performance. The precision engineered gearbox offers
unsurpassed performance and high efficiency in the transmission. The integrated gearbox
simplifies the correct choice of peripheral cutting speed to match a chosen blade diameter.
Pos E. Conical self cleaning guide rollers offers optimum control of the saw head along the
track. The rollers are easily adjustable and offer reliable operation over a long period of time.
The guide rollers are arranged in the same plane as the saw blade for optimal force distribution.
Pos F. Oil lubricated speed reduction gearbox with precision ground helical gears.
Warning! The guard must be fitted
whenever the machine is run.

Operators manual for the Pentruder 6-12HF and Pentpak HF-power pack – Original instructions Page 4
For optimum accessibility the saw arm can be rotated through 360 degrees in either direction.
The saw head accepts an 800 mm (32”) saw blade free from the wall.
Double motor cooling system, i.e. both rotor and stator are cooled, for sustained reliable power
and high efficiency.
Efficient water supply to blade central through blade flange, even for flush cutting blades.
21 kg
13 kg

Operators manual for the Pentruder 6-12HF and Pentpak HF-power pack – Original instructions Page 5
Pos G. Travel and feed motors are protected within the chassis body. No electric parts
except for connectors are exposed to dirt.
Pos H. Travel and feed transmission is by means of planetary gear transmission and a self
blocking worm gear transmission. No risk for unexpected movements of the saw head as a
result of a failed electric motor brake.
Pos J. The worm screws are supported by oil lubricated axial needle roller bearings and
axial thrust ball bearings.
Pos K. Main HF-motor has a long life multi plate slip clutch for protection of the gear train if
a blade is jammed. The slip clutch can easily be removed and serviced if needed.
Pos L. The arm rotation transmission is protected by a multi plate slip clutch if a blade is
jammed. The operator can just “move back” from the cut and start again. Also this slip clutch
can easily be removed and serviced if needed.
Pos M. The lower pair of conical rollers are adjustable by means of eccentric shafts.

Operators manual for the Pentruder 6-12HF and Pentpak HF-power pack – Original instructions Page 6
Quick disconnect coupling for mounting of the saw blade (Patent)
Tractive AB puts great emphasis on creating technical solutions for its products that are safe to
use. This is the most important criteria when our machines are designed.
Pentruder 6-12HF is equipped with a patented quick disconnect coupling for the saw blade. The
intention with this coupling is primarily to enhance safety and handling. A unique patented
coupling for the blade flange enhances safety and simplifies awkward set-up’s considerably,
especially when flush cutting must be performed. The saw blade can always be fitted, after the
machine is mounted, radially, and heavy and troublesome set-up’s can be eliminated to a great
extent.
Mounting a saw blade for flush cutting has always been relatively awkward and often one must
mount the saw head and the saw blade together, and it can be difficult to mount also a normal saw
blade for the upper or the lower cut, or even for vertical cuts if the available space is limited.
With Pentruder’s quick disconnect all these problems are gone. Provided the operator is trained
in the correct operation of the coupling it will provide considerable improvement on both safety
and efficiency.

Operators manual for the Pentruder 6-12HF and Pentpak HF-power pack – Original instructions Page 7
Tracks and brackets
The tracks and the brackets are designed to provide high levels of rigidity and stability for the
lowest possible weight. The design is unique in the sense that it allows the guide rollers on the saw
head to be aligned above each other, in the same plane as for the cut. This is to provide the highest
levels of safety, stability and precision of cut.
The tracks are very lightweight at only 6.95 kg / m (4.5 lbs. per foot) track. The stiffness and
stability in the system is still, in spite of the low weight, sufficient for heavy loads and jobs
where up to 2 m (78”) diameter blades are used (with another wall saw).
The tracks have steel guide rails on which the rollers run. They offer high wear resistance and
precise guidance of the saw head. The grooves into which the guide rails are located have
been machined with great precision.
The tracks are quickly and easily mounted in an easily accessible yoke by means of a T-slot
piece, which in turn is provided with a lubricated and protected screw and case hardened
sleeve-type nut. The hardened sleeve-type nut safeguards that the screw preload is always
adequate to clamp the track. This system improves safety and reduces the possibility of the nut
working loose because of vibration or variations in load.
The brackets are versatile and easy. A minimum of two brackets are needed to fit one track.
When two tracks are joined, at least three brackets must be used, one of which must be
mounted directly over the joint between the two tracks.

Operators manual for the Pentruder 6-12HF and Pentpak HF-power pack – Original instructions Page 8
Blade guard
The blade guards are made from sheet metal of hardened aluminium, screwed together with
spacers to achieve strength and stiffness. For the 6-12 the blade guards are available in three
different sizes, Ø 800 (32”), Ø 1000 (40”) and Ø 1200 (48”) for normal and flush cutting. Fully
covering blade guards are also available. These are used together with a parallel blade guard
guide.
New regulations put new and higher demands on safety, and thereby on the blade guards.
Because of the lightweight design it is more likely that the operator will choose to use the blade
guards on all jobs – this has not always been so! The guards on the Pentruder 6-12 HF are so
convenient and lightweight they should always be used. It is a basic requirement for safe
handling of the machine.
Spray from the saw blade is reduced thanks to the extra swivelling guard piece.
Automatic control of the blade guard through the movement of the saw arm, the operator need
not adjust the guard manually while the machine is in operation.
Detachable side pieces. The guards are divided in three pieces with a fixed centre piece and two
detachable side pieces for cutting into adjacent surfaces.

Operators manual for the Pentruder 6-12HF and Pentpak HF-power pack – Original instructions Page 9
Pentpak high frequency (HF)-power pack
The Pentpak high frequency (HF-)power pack is designed to a new and unique concept. The
electronic units are especially designed for the Pentpak and the power pack is one of the most
compact designs on the market. It offers outstanding performance combined with reliability, safety
and ease of handling.
Depending on voltage and chosen HF-motor there are different HF-power packs.
For 380 – 480 V Input voltage there is the Pentpak 427 for up to 27 kW HF-motor, Pentpak 422 for
up to 22 kW HF-motor (this power pack is no longer sold) and Pentpak 418 for up to 18 kW HF-
motor. For 200 – 230 V Input voltage there is the Pentpak 200 for up to 22 kW HF-motor (400 Hz
input frequency), the Pentpak 218 for up to 18 kW HF-motor and the Pentpak 222 for up to 22 kW
HF-motor. In the following operator’s manual Pentpak HF-power pack or just Pentpak is used to
refer to all of the Pentpak HF-power packs listed above.
New regulations for the design of machines and the specifications for their inherent safety have
been the ruling parameters in the design and development of this power pack.
Design, function and special features of the Pentpak HF-power pack
For optimum safety and manoeuvrability all functions are controlled through a remote control
unit. The operator can therefore always be in the safest and best possible position and still have
full control of the machine.
The remote control system contributes to a high level of safety. All functions are reset
automatically when the power supply is disconnected, or when any of the Emergency Stop-
buttons are depressed. The blade, if in rotation, and in a cut, will continue to rotate because of
its inertia, but will coast to a stop after a few seconds. If the blade is rotating and not in a cut, it
will take longer before the blade stops. No functions remain after the power pack has been shut
off. At every restart the power pack starts from the same initial mode with all functions reset.
The converter is water cooled which provides excellent cooling of the transistor power modules
in the frequency inverter.
If the power pack is run using an inadequate supply of cooling water, it is still protected from
overheating by means of a temperature sensing device inside the power pack.
The Pentpak HF-power pack is compact and weighs only 26 kg, still it can drive the electric
motor with a continuous output of up to 27 kW depending on model.
The power pack has a high overall efficiency factor and at 400 V a 32 Amp delay fuse will be
enough to run the power pack and motor at their maximum rated output. We recommend to use
a 40 Amp fuse if possible. Even 16 Amp (25 Amp for the 27 kW HF-motor) delay fuses can be
used but then the power output must be reduced by turning the feed rate knob on the remote
control.
All electrical and electronic equipment is protected under covers and can not easily be tampered
with. The only device that can be operated is the (green) start and emergency stop buttons.