Georg Fischer Piping Systems Work Light RA21

Operating Instructions
Code 790 044 762
RA 21 and RA 21 Special
Pipe Cutting and
Bevelling Machines
GEORG FISCHER +GF+

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These operating instructions are part
of machine no.: .........................
All rights retained, in particular the rights to reproduction, dissemination and

translation.
Copying or reproduction in any form (print, photocopy, microfilm or data
acquisition) require written permission from Georg Fischer Rohrverbindungs-
technik GmbH.

Table of Contents
Page
0 About these operating instructions 1
1 Notes on safety 2
2 Description of the pipe cutter 4
3 Features and scope of application

of the pipe cutter 5
4 Technical specifications 7
5 Commissioning 8
5.1 Checking the scope of delivery 8
5.2 Transporting and assembling
the pipe cutter 9
6 Operation 10
6.1 Fitting the saw blade /
additional cutter 10
6.2 Adjusting the pipe diameter 12
6.3 Adjusting the additional cutter 13
6.4 Using stops 14
6.5 Cutting the pipe 16
6.6 Cutting and bevelling the pipe 18
7 Maintenance 20
8 What to do if ...? 22
GEORG FISCHER +GF+

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GEORG FISCHER +GF+
0 About 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 accompa-
nies passages of text which you should
read and understand under all circum-
stances. 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+ 1

1 Notes 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 GEORG FISCHER +GF+¹

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.

2 Description 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.
9
1
2
3
1 pipe diameter adjusting

6
facility 7
2 locking screw
3 worm gear
4 nameplate
5 motor
6 on/off switch
8
7 locking knob for on/off
switch
8 power cable with slipring
contact
9 vise

3 Features 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 application RA 21 RA 21
Special
º pipe Ø 1/4" to 2"

or 10 mm to 63 mm X X
º up to 5.5 mm wall
thickness
Chrome and stainless

steel pipes up to 1.5 mm X
wall thickness
Solid material
Ø 6 mm to 16 mm X

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).

4 Technical specifications
Manufacturer Georg Fischer
Rohrverbindungstechnik GmbH
D-78224 Singen
Dimensions 300 x 450 x 300 mm
Weight
(incl. vise) 34 kg
Power 550 W
Protection class Totally insulated in accordance

with Class II DIN VDE 0740
Speed 180 rpm
Versions 1-phase AC
110 ... 120 V, 50/60 Hz
230 ... 240 V, 50/60 Hz
Sound pressure
level at the
workplace at 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/s2

5 Commissioning
5.1 Checking 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

5.2 Transporting 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 quick-
mounting baseplate
as a template.
!Drill 13 mm Ø holes.
!Bolt down the
quick-mounting
baseplate.
!Place the vise with

flanged-on pipe
cutter on the base
plate. Tighten the
hexagon nut (1).

6 Operation
6.1 Fitting 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.
Preparatory work
!Loosen the locking

screw (1).
!Turn the pipe cutter
upwards 180°
clockwise.
!Tighten the locking
screw (1). 1
!Clean the saw blade
shaft (2) and vicinity. 2

Fitting the saw blade
!Mount the following

on the shaft (1):
º saw blade (3)
º clamping disk (4)
1 code RA 21:
790 041 188
2 code RA 21 S:
790 044 192
!Tighten the nut (5)
by turning counter-
clockwise. Left-hand
5 4 3 thread.
!Loosen the locking
screw (2).
clockwise back
down into its home
position.
Fitting the saw blade and additional cutter
!Mount the following

on the shaft (1):
RA 21:
1 º saw blade (3)
º additional cutter (4)
º clamping disk (5)
2
RA 21 S:
º saw blade (3)
º additional cutter (4)
!Tighten the nut (6)
6 5 4 3 by turning counter-
clockwise. Left-hand
thread.
!Loosen the locking
screw (2).
clockwise back into
its home position.

6.2 Adjusting the pipe diameter
Threaded pipes to DIN 2440
!Release the lever open

2
(1).
!Select pipe diameter 3 3/4
1/2 3/8 1/4
1
1
on the scale (3).

/4
11
/2
11
!Set the red mark on
2
the left side of the
stop (2) to the corre-
sponding number.
!Tighten the lever (1).
All other types of pipe
!Insert the pipe in the

vise. 1 1
3/4
1/2 3/8 1/4
/4
11
/2
!Move the pipe 11
almost up to the 2
2
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.

6.3 Adjusting the additional cutter
Simultaneous cutting and bevelling of steel pipes

up to a wall thickness of 4.5 mm is possible.

1 1
3/4
1/2 3/8 1/4
vise.
/4
11
/2
!Move the pipe

11
2 almost up to the
2
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.
!Do a test bevel and
check the result (see
section 6.6).
Bevel OK Move the Move the

stop (2) a stop (2) a
little to the little to the
right left

6.4 Using stops
Length gauge up to 250 mm
!Mount the length

gauge (1). 2
!Swing the stop (2) in
to the middle of the
pipe and engage. 3
!Release the cross
knob (3).
!Set to the desired
length. Use the scale. 1
!Tighten the cross
knob.
!Push the pipe for-
wards up to the
stop and clamp.
!Swing the stop clear.
!Cut the pipe.
Length gauge over 250 mm
!Mount the length 2

gauge (1).
!Swing the stop in to
the middle of the
pipe.
1
!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.

!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.

6.5 Cutting 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.
!Connect the pipe

cutter to the mains.
!Apply saw blade
lubricant to the saw
blade teeth.
Repeat the lubrication every three cuts.
If in contact with drinking water or

foodstuffs, use only Georg Fischer
lubricating gel.
!Mark the cutting ³1m ³1m

location on the
pipe.
vise.
!Push the marked
cutting location over
the saw blade.
!Clamp the pipe in
the vise.
Use a pipe support for pipes that are over

1 m long.

!Switch on the saw
motor. Press the on/
off switch (1) and
the locking button
1 (2).
1 !Carefully turn the

pipe cutter clock-
wise 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
3 aligned.
3/4
1/2 3/8 1/4
back into its home
11
/2
/4
11
1
position.
!Switch off the saw
2

off switch (1) again.
For non-stop operation: After cutting, loosen

the hexagon nut on the saw blade to avoid
damage caused by tension.

6.6 Cutting and bevelling the pipe
This procedure combines cutting and bevelling

of the pipe. When cutting and bevelling simul-
taneously, 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.
!Connect the pipe

cutter to the mains.
!Apply saw blade lu-
bricant to the saw
blade teeth/cutting
surface.
Repeat the lubrication every three cuts.
If in contact with drinking water or

foodstuffs, use only Georg Fischer
lubricating gel.
!Mark the cutting ³1m ³1m

location on the
pipe.
vise.
!Push the marked
cutting location over
the saw blade.
!Clamp the pipe in
the vise.
Use a pipe support for pipes that are more

than 1 m long.

!Switch on the saw
off switch (1) and
the locking button
1 (2).
!Carefully turn the

1 pipe cutter clock-
wise 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
3 aligned.
3/4
1/2 3/8 1/4
back into its home
1 1/
2
11
/4
1
position.
!Switch off the saw
2

off switch (1) again.
For non-stop operation: After cutting, loosen

the hexagon nut on the saw blade to avoid
damage caused by tension.

7 Maintenance
Disconnect the mains plug before
doing maintenance work.
Interval Activity
every week 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.
º every time the cutter is Do not use compressed air to clean the area at the
cleaned end of the shaft marked with an arrow as the rotary
º every tool change shaft seal may otherwise be damaged by chips.
Use a cloth or brush to clean the end of the shaft.

Interval Activity
after the first 150 hours Fill with gear oil up to the threaded hole.
of operation
(or after 3 months,
whichever is sooner),
then every 1000 hours of
operation (or every year)

8 What to do if ...?
Problem Cause Remedy
Pipe cutter will not turn. Locking screw tightened. Loosen locking screw.
Wrong pipe diameter Set pipe diameter

set. correctly.
Saw blade is not cutting Nut on saw blade shaft Tighten nut.
and is slipping. not tight enough.
Saw blade is not cutting. Saw blade wrong way Fit saw blade correctly.
round. Inscription on saw blade
must face the pipe cutting
machine (see chapter 6).
Pipe is not being cut Pipe cutter not flanged Remove pipe cutter,
concentrically. on. Flange surfaces are clean mounting parts
dirty. and flange surfaces, bolt
pipe cutter back on.
Pipe is not being cut. Pipe diameter wrongly Adjust pipe diameter
set. (see chapter 6).
Clamping lever not tight. Tighten clamping lever.
Motor not running. The restart inhibitor has Turn switch to "0", then
tripped. switch the pipe cutter on.

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.

GEORG FISCHER +GF+
A Georg Fischer Rohrleitungssysteme GmbH, Sandgasse 16, 3130 Herzogenburg,
Tel. +43(0)2782/8 56 43-0, Fax +43(0)2782/8 56 64, office@georgfischer.at, www.georgfischer.at
AUS George Fischer Pty Ltd, 186-190 Kingsgrove Road, Kingsgrove NSW 2008,
Tel. +61(0)2/95 54 39 77, Fax +61(0)2/95 02 25 61, sales@georgefischer.com.au,
www.georgefischer.com.au
B/L Georg Fischer NV/SA, Digue du Canal 109-111 – Vaartdijk 109-111, 1070 Bruxelles/Brüssel,
Tél. +32(0)2/556 40 20, Fax +32(0)2/524 34 26, info.be@be.piping.georgfischer.com,
www.georgfischer.be
CH Georg Fischer Rohrleitungssysteme (Schweiz) AG, Ebnatstrasse 101, Postfach,
8201 Schaffhausen, Tel. +41(0)52/631 30 26, Fax +41(0)52/631 28 97,
info@rohrleitungssysteme.georgfischer.ch, www.piping.georgfischer.ch
D Georg Fischer Rohrverbindungstechnik GmbH, Freibühlstrasse 18/19, 78224 Singen (Htwl.),
Tel. +49(0)7731/79 25 21–23, Fax +49(0)7731/79 25 24, info@rvt.georgfischer.com,
www.rvt.georgfischer.com
DK/IS Georg Fischer A/S, Rugvænget 30, 2630 Taastrup, Tel. +45 70 22 19 75,
Fax +45 70 22 19 76, info@dk.piping.georgfischer.com, www.georgfischer.dk
F George Fischer S.A.S., 105–113, rue Charles Michels, 93208 Saint-Denis Cedex 1,
Tél. +33(0)1/492 21 34 1, Fax +33(0)1/492 21 30 0, info@georgefischer.fr, www.georgefischer.fr
GB George Fischer Sales Limited, Paradise Way, Coventry, CV2 2ST, Tel. +44(0)2476/535 535,
Fax +44(0)2476/530 450, info@georgefischer.co.uk, www.georgefischer.co.uk
I Georg Fischer S.p.A., Via Sondrio 1, 20063 Cernusco S/N (MI), Tel. +3902/921 861,
Fax +3902/921 407 85-6, office@piping.georgfischer.it, www.georgfischer.it
N Georg Fischer AS, Rudsletta 97, 1351 Rud, Tel. +47(0)67/18 29 00, Fax +47(0)67/13 92 92,
info@no.piping.georgfischer.com, www.georgfischer.no
NL Georg Fischer N.V., Postbus 35-8160, 816 PA Epe, Tel. +31(0)578/67 82 22,
Fax +31(0)578/62 17 68, info.vgnl@nl.piping.georgfischer.com, www.georgfischer.nl
Georg Fischer WAGA N.V., Lange Veenteweg 19, Postbus 290, 8160 AG Epe,
Tel. +31(0)578/67 83 78, Fax +31(0)578/62 08 48, info@waga.georgfischer.com,
www.waga.georgfischer.com
S/FIN Georg Fischer AB, Box 113, 12523 Älvsjö-Stockholm, Tel. +46(0)8/506 77 500,
Fax +46(0)8/749 23 70, info@georgfischer.se, www.georgfischer.se
USA George Fischer Inc., 2882 Dow Avenue, Tustin, CA 92780-7258, Tel. +1(714) 731-88 00,
Toll Free 800/854 40 90, Fax +1(714) 731 62 01, info@us.piping.georgefischer.com,
www.us.piping.georgefischer.com
Export Georg Fischer Rohrverbindungstechnik GmbH, Freibühlstrasse 18/19, 78224 Singen (Htwl.),
Tel. +49(0)7731/792-0, Fax +49(0)7731/792 524, info@rvt.georgfischer.com,
www.rvt.georgfischer.com
790 044 762_01/4 (09.03) © Georg Fischer Rohrverbindungstechnik GmbH, D-78224 Singen 2003

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Operating Instructions

Code 790 044 762

GEORG FISCHER +GF+

of machine no.: .........................

All rights retained, in particular the rights to reproduction, dissemination and

More user manuals on ManualsBase.com

2 Description of the pipe cutter 4

3 Features and scope of application

GEORG FISCHER +GF+

GEORG FISCHER +GF+ 1

2 GEORG FISCHER +GF+¹

Always work with safety in mind.

The cutter and saw blade may cause

Keep the pipe cutter dry, do not use

Do not use the pipe cutter in areas

Further safety rules

GEORG FISCHER +GF+ 3

Vise and saw

Motor and power cable

1 pipe diameter adjusting

4 GEORG FISCHER +GF+¹

The pipe cutter is suitable for

The cut pipes are free from burr, so no

º pipe Ø 1/4" to 2"

Chrome and stainless

GEORG FISCHER +GF+ 5

Do not use cast pipes with glass-hard

6 GEORG FISCHER +GF+¹

Dimensions 300 x 450 x 300 mm

Protection class Totally insulated in accordance

Speed 180 rpm

As the noise level may also exceed 84 dB (A)

The sound pressure level was measured under

GEORG FISCHER +GF+ 7

Check all parts of the delivery for completeness

8 GEORG FISCHER +GF+¹

Mounting the quick mounting base plate

!Mark and punch

!Place the vise with

GEORG FISCHER +GF+ 9

Disconnect the mains plug before fitting

The saw blade/additional cutter must be free

Use only original Georg Fischer saw blades

The inscription on the saw blade (1) must

!Loosen the locking

10 GEORG FISCHER +GF+¹

!Mount the following

!Mount the following

GEORG FISCHER +GF+ 11

Threaded pipes to DIN 2440

!Release the lever open

on the scale (3).

!Set the red mark on

All other types of pipe

!Insert the pipe in the

!Move the pipe 11

12 GEORG FISCHER +GF+¹

Simultaneous cutting and bevelling of steel pipes

!Insert the pipe in the

!Move the pipe