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translation.
Copying or reproduction in any form (print, photocopy, microfilm or data
acquisition) require written permission from Georg Fischer Rohrverbindungstechnik GmbH.
Page 3
Table of Contents
Page
0About these operating instructions1
1Notes on safety2
2Description of the pipe cutter4
3Features and scope of application
of the pipe cutter5
4Technical specifications7
5Commissioning8
5.1Checking the scope of delivery8
5.2Transporting and assembling
the pipe cutter9
6Operation10
6.1Fitting the saw blade /
additional cutter10
6.2Adjusting the pipe diameter12
6.3Adjusting the additional cutter13
6.4Using stops14
6.5Cutting the pipe16
6.6Cutting and bevelling the pipe18
7Maintenance20
8What to do if ...?22
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II
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0About these operating
instructions
The symbols used in this manual are explained
here to help you quickly understand the
operating instructions and use them effectively.
Symbols
Note on safety
This general hazard symbol accompanies passages of text which you should
read and understand under all circumstances. By failing to do so you could
endanger yourself and others.
Important information
Passages of text which convey important
information are accompanied by this
symbol. Failing to observe them can
cause machine malfunctions or damage.
!Action
This arrow indicates an action you must
perform.
GEORG FISCHER +GF+
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1Notes on safety
The RA 21/RA 21 Special Pipe Cutting and
Bevelling Machine (referred to as a pipe cutter
in the following) is a state-of-the-art machine.
Using it for purposes other than those described
in this manual may cause injury to the user or to
others. It may also damage the machine or
other equipment.
Therefore:
º Always ensure that the machine is in good
working order and always comply with
these notes on safety.
Proper use
º Only use the materials and types of pipe
specified in this manual (see chapter 3).
Always consult Georg Fischer after-sales
service personnel before using other
materials.
º Only use the pipe cutter for cutting and
bevelling operations as described in
chapter 6.
º Only use original Georg Fischer spare parts
and auxiliaries.
º Inspect the pipe cutter every day for visible
signs of damage or defects. Any damage or
defects must be repaired immediately.
Work on the electrical installations may only
be performed by a qualified electrician.
º Do not use the pipe cutter unless all safety
devises
-restart inhibitor
-overload protection
-saw blade guard
are working properly and the fixtures on the
vise and baseplate are fitted securely.
2
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Working with safety in mind
"Make your contribution to safety at the workplace."
Report any unusual behaviour on the part of the
machine to the person in charge immediately.
Always work with safety in mind.
º Wear safety goggles during
cutting and bevelling operations.
º Switch the RA 21 (S) off after
completing each stage of work and
allow the machine to run a stop.
º Disconnect from the mains before
cleaning the pipe cutter.
The cutter and saw blade may cause
injury.
Therefore:
º Keep your hands away from the
tools during cutting and bevelling
operations.
Keep the pipe cutter dry, do not use
in the rain.
Do not use the pipe cutter in areas
subject to explosion hazards.
Disposal
Please make sure that material chips and used
gear oil are disposed of properly.
Further safety rules
Comply with the regulations, standards and
guidelines that apply in your country.
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Page 8
2Description of the
pipe cutter
The pipe cutter is a robust, user-friendly,
service-friendly and safety-oriented design.
Vise and saw
All mechanically stressed parts are metal.
The rounded, smooth edges help to avoid
accidents.
The saw blade and jaws are close togethers
which reduces vibrations during cutting.
Motor and power cable
The motor can be easily removed. The motor
housing and switches are made from lightweight,
impact-resistant plastic.
Integrated into the power cable is a slipring
contact which prevents the cable from twisting
during cutting.
1 pipe diameter adjusting
facility
2 locking screw
3 worm gear
4 nameplate
5 motor
6 on/off switch
7 locking knob for on/off
switch
8 power cable with slipring
contact
9 vise
4
1
2
3
4
5
6
7
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3Features and scope of
application of the pipe
cutter
The pipe cutter
º is a fully configured working machine suitable
for workshop and building site operation;
º is part of the combined KM 2 and GTM 2
pipe cutting and threading machines;
º works using the safety-enhancing principle:
stationary pipe, rotating tool.
The pipe cutter is suitable for
º cutting and
º bevelling
pipes.
The cut pipes are free from burr, so no
deburring (in- or outside) is required.
This reduces the risk of corrosion.
Scope of applicationRA 21RA 21
Special
º pipe Ø 1/4" to 2"
or 10 mm to 63 mmXX
º up to 5.5 mm wall
thickness
Chrome and stainless
steel pipes up to 1.5 mmX
wall thickness
Solid material
Ø 6 mm to 16 mmX
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The following materials can be used:
º steel, black or galvanised
º chrome and stainless steel
(up to 2.5 mm wall thickness)
º aluminium
º non-ferrous metals (e.g. copper, brass)
º plastics (PE, PP, PVDE, PVC)
Other materials on request.
Do not use cast pipes with glass-hard
surfaces (GG).
6
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4Technical specifications
ManufacturerGeorg Fischer
Rohrverbindungstechnik GmbH
D-78224 Singen
Dimensions300 x 450 x 300 mm
Weight
(incl. vise)34 kg
Power550 W
Protection classTotally insulated in accordance
with Class II DIN VDE 0740
Speed180 rpm
Versions1-phase AC
110 ... 120 V, 50/60 Hz
230 ... 240 V, 50/60 Hz
Sound pressure
level at the
workplaceat idle:approx. 82 dB (A)
under load: approx. 84 dB (A)
As the noise level may also exceed 84 dB (A)
under unfavourable operating conditions, we
recommend the use of suitable ear protection
when the machine is used for extended periods.
The sound pressure level was measured under
normal operating conditions in accordance with
EN 23741.
Vibration level
in accordance
with EN 28662,
Part 1< 2.5 m/s
GEORG FISCHER +GF+
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5Commissioning
5.1Checking the scope of delivery
Check all parts of the delivery for completeness
and transport damage. Please report missing
parts or transport damage to the support
immediately.
Normal accessories
(subject to change without notice)
º 1 saw blade
º 1 ring spanner, 22 mm
º 1 brush
º 2 hexagon Allen keys
º 1 tube of saw blade lubricant
º 1 quick mounting base plate
º 1 tube of special gear oil
8
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5.2Transporting and assembling the pipe cutter
Transport
Disconnect from the power supply
before transporting, mounting or
dismounting and allow the machine to
run a stop.
Mounting the quick mounting base plate
The pipe cutter with the vise is mounted either
º on the quick mounting base plate, or
º on the quick mounting base plate
(special accessory) with clamps.
!Mark and punch
the bolt holes on
the work bench.
Use the quickmounting baseplate
as a template.
!Drill 13 mm Ø holes.
!Bolt down the
quick-mounting
baseplate.
GEORG FISCHER +GF+
!Place the vise with
flanged-on pipe
cutter on the base
plate. Tighten the
hexagon nut (1).
1
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Page 14
6Operation
6.1Fitting the saw blade /
additional cutter
Disconnect the mains plug before fitting
or changing the tool.
The saw blade/additional cutter must be free
from chips and dirt.
Use only original Georg Fischer saw blades
and cutters.
The inscription on the saw blade (1) must
always face the pipe cutter. Observe sign for
saw blade guard.
1
!Loosen the locking
screw (1).
!Turn the pipe cutter
upwards 180°
clockwise.
!Tighten the locking
screw (1).
!Clean the saw blade
shaft (2) and vicinity.
10
Preparatory work
1
2
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Fitting the saw blade
1
2
345
Fitting the saw blade and additional cutter
1
2
3456
!Mount the following
on the shaft (1):
º saw blade (3)
º clamping disk (4)
code RA 21:
790 041 188
code RA 21 S:
790 044 192
!Tighten the nut (5)
by turning counterclockwise. Left-hand
thread.
!Loosen the locking
screw (2).
!Turn the pipe cutter
clockwise back
down into its home
position.
!Mount the following
on the shaft (1):
RA 21:
º saw blade (3)
º additional cutter (4)
º clamping disk (5)
RA 21 S:
º saw blade (3)
º additional cutter (4)
!Tighten the nut (6)
by turning counterclockwise. Left-hand
thread.
!Loosen the locking
screw (2).
!Turn the pipe cutter
clockwise back into
its home position.
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6.2Adjusting the pipe diameter
Threaded pipes to DIN 2440
!Release the lever
(1).
!Select pipe diameter
on the scale (3).
!Set the red mark on
the left side of the
stop (2) to the corresponding number.
!Tighten the lever (1).
!Insert the pipe in the
vise.
!Move the pipe
almost up to the
saw blade.
!Tighten the pipe in
the vise.
!Release the lever (1)
and set the stop (2)
to position 2".
Do not tighten.
!Raise the motor of
the pipe cutter as if
to start cutting, until
the points of the
saw blade teeth
project about 1.5
mm into the pipe.
!Tighten the lever (1).
2
3
3
1/4
1
2
/
1
1
2
/8
1/2
1
/4
/4
3
1
All other types of pipe
4
open
1
2
2
/
3
1
1/4
1
1/2
1
1
3/8
2
/
1
1
/
4
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6.3Adjusting the additional cutter
Simultaneous cutting and bevelling of steel pipes
up to a wall thickness of 4.5 mm is possible.
3
/8
/2
1
1
/4
1
2
2
/4
3
1
/4
1
1
/2
1
1
!Insert the pipe in the
vise.
!Move the pipe
almost up to the
additional cutter.
!Clamp the pipe in
the vise.
!Release the lever (1)
and set the stop (2)
to position 2".
Do not tighten.
!Raise the motor of
the pipe cutter as if
to start cutting, until
the cutter covers the
wall of the pipe.
!Tighten the lever (1).
!Do a test bevel and
check the result (see
section 6.6).
Bevel OK
GEORG FISCHER +GF+
Move the
stop (2) a
little to the
right
Move the
stop (2) a
little to the
left
13
Page 18
!Mount the length
gauge (1).
!Swing the stop (2) in
to the middle of the
pipe and engage.
!Release the cross
knob (3).
!Set to the desired
length. Use the scale.
!Tighten the cross
knob.
!Push the pipe for-
wards up to the
stop and clamp.
!Swing the stop clear.
!Cut the pipe.
6.4Using stops
Length gauge up to 250 mm
2
3
1
!Mount the length
gauge (1).
!Swing the stop in to
the middle of the
pipe.
!Use a yardstick to
extend the stop to
the desired length.
!Push the clamp (2)
up against the
housing and turn it
so that it is in
contact with the
work bench.
14
Length gauge over 250 mm
2
1
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!Tighten the clamp.
!Push the pipe up
against the stop
and clamp.
!Swing the stop out
and push all the
way back.
!Cut the pipe.
!For the next cut,
extend the stop and
swing into place
clockwise.
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Page 20
!Connect the pipe
cutter to the mains.
!Apply saw blade
lubricant to the saw
blade teeth.
6.5Cutting the pipe
Cut thin-walled chrome and stainless steel
pipe up to 1.5 mm wall thickness only with
RA 21 Special.
Put on safety goggles before cutting.
Repeat the lubrication every three cuts.
If in contact with drinking water or
foodstuffs, use only Georg Fischer
lubricating gel.
!Mark the cutting
location on the
pipe.
!Insert the pipe in the
vise.
!Push the marked
cutting location over
the saw blade.
!Clamp the pipe in
the vise.
16
³ 1 m
³ 1 m
Use a pipe support for pipes that are over
1 m long.
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!Switch on the saw
motor. Press the on/
off switch (1) and
the locking button
1
2
(2).
1
3
3
/
8
2
/
1
1
/4
/4
3
1
/4
1
1
1/2
1
2
For non-stop operation: After cutting, loosen
the hexagon nut on the saw blade to avoid
damage caused by tension.
!Carefully turn the
pipe cutter clockwise until the wall of
the pipe has been
pierced through.
!Continue to turn
rapidly until the pipe
has been cut off and
the marks (3) on the
slide housing and
vise housing are
aligned.
!Turn the pipe cutter
back into its home
position.
!Switch off the saw
motor. Press the on/
off switch (1) again.
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Page 22
!Connect the pipe
cutter to the mains.
!Apply saw blade lu-
bricant to the saw
blade teeth/cutting
surface.
6.6Cutting and bevelling the pipe
This procedure combines cutting and bevelling
of the pipe. When cutting and bevelling simultaneously, turn the pipe cutter more slowly
around the pipe that you would for cutting
alone, as two tools are used at the same time.
Put on safety goggles before cutting.
Repeat the lubrication every three cuts.
!Mark the cutting
location on the
pipe.
!Insert the pipe in the
vise.
!Push the marked
cutting location over
the saw blade.
!Clamp the pipe in
the vise.
18
If in contact with drinking water or
foodstuffs, use only Georg Fischer
lubricating gel.
³ 1 m
³ 1 m
Use a pipe support for pipes that are more
than 1 m long.
GEORG FISCHER +GF+¹
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!Switch on the saw
motor. Press the on/
off switch (1) and
the locking button
1
2
(2).
1
3
3/8
2
/
1
1
/
4
4
/
3
1
1/4
1
/2
1
1
2
For non-stop operation: After cutting, loosen
the hexagon nut on the saw blade to avoid
damage caused by tension.
!Carefully turn the
pipe cutter clockwise until the wall of
the pipe has been
pierced through.
!Continue turning
rapidly until the pipe
has been cut off and
the marks (3) on the
slide housing and
vise housing are
aligned.
!Turn the pipe cutter
back into its home
position.
!Switch off the saw
motor. Press the on/
off switch (1) again.
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7Maintenance
Disconnect the mains plug before
doing maintenance work.
Interval
every week
º every time the cutter is
cleaned
º every tool change
Activity
Remove the saw blade and brush off chips.
Oil the four locations marked by the arrows.
Check the oil level of the gear and top up if
necessary.
Do not use compressed air to clean the area at the
end of the shaft marked with an arrow as the rotary
shaft seal may otherwise be damaged by chips.
20
Use a cloth or brush to clean the end of the shaft.
GEORG FISCHER +GF+¹
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Interval
Activity
after the first 150 hours
of operation
(or after 3 months,
whichever is sooner),
then every 1000 hours of
operation (or every year)
Fill with gear oil up to the threaded hole.
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8What to do if ...?
Problem
Pipe cutter will not turn.
Saw blade is not cutting
and is slipping.
Saw blade is not cutting.
Pipe is not being cut
concentrically.
Pipe is not being cut.
Motor not running.
Cause
Locking screw tightened.
Wrong pipe diameter
set.
Nut on saw blade shaft
not tight enough.
Saw blade wrong way
round.
Pipe cutter not flanged
on. Flange surfaces are
dirty.
Pipe diameter wrongly
set.
Clamping lever not tight.
The restart inhibitor has
tripped.
Remedy
Loosen locking screw.
Set pipe diameter
correctly.
Tighten nut.
Fit saw blade correctly.
Inscription on saw blade
must face the pipe cutting
machine (see chapter 6).
Remove pipe cutter,
clean mounting parts
and flange surfaces, bolt
pipe cutter back on.
Adjust pipe diameter
(see chapter 6).
Tighten clamping lever.
Turn switch to "0", then
switch the pipe cutter on.
22
GEORG FISCHER +GF+¹
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Service / after-sales service
Spare parts: see separate spare parts list.
Separate service instructions are available for
the elimination of faults.
Alternatively, contact your local Georg Fischer
agent.
A list of addresses is provided on the back
cover of this manual.
Please quote the following data:
º Cutter type: RA 21/RA 21 Special
º Machine number: see nameplate.
The technical data are not binding.
They are not warranted characteristics and
are subject to change.
Please consult our General Conditions of
Supply.