Gude GRK 250/300 Wiring diagram

GRK 250/300 #55003
GRK 250/500 #55004
GRK 210/300 #55006
©Güde GmbH & Co. KG - Birkichstrasse 6 - D-74549 Wolpertshausen - Deutschland

English GB
Translation of original operating instructions
MITRE-BOX SAW

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GB Please read carefully the following Operating Instructions before putting the appliance into operation
A.V. 2 Any reprints, even partial, are subject to approval. Technical changes reserved.
Illustrative pictures! Translation of original operating instructions.
GB
Do you have any technical questions?Any claim? Do you need any spare parts or operating instructions?
We will quickly help you and without needless bureaucracy at our home page www.guede.com in the Service part. Please
help us be able to help you. In order to be able to identify your appliance in case of claim, we need the serial No., Order No.
and year of production. All this data can be found on the type label. Please enter the data below for future reference.
Serial No.: Order No.: Year of production:
Tel.: [phone] / 700-360 Fax: [phone] E-Mail: [email protected]m
Sighs on Unit
Meaning of Symbols
Symbols shown below are used throughout this manual
and/or on the unit:
Product Safety:
Product compliance with
respective EU standards
Bans:
General ban (in combination
with another pictograph) Do not reach in rotating parts
Do not use the unit in rain No pulling the cable
Precaution:
Warning/caution
Commands:
Read operating manual
before use Use protection gloves
Wear goggles. Use ear
protectors
Environment Protection:
Wastes to be disposed of in
a professional manner not to
harm the environment
Cardboard packaging to be
collected for recycling.
Faulty and/or disposed of
electrical/electronic
appliances to be collected by
authorised salvage places
Packaging:
Protect from moisture Keep Up
Fragile
Technical Data:
Engine power Connection
Revolutions Ø circular saw blade
Cutting width at 90° Cutting width at 45°
Weight
Scope of Delivery (Fig. 1)
1. Hand grip and a switch
2. Carbon brush guard
3. Tripping lever
4. Scale with angle adjustment
5. Saw table
6. Mounting holes
7. Table extension equipment
8. End stop
9. Sawdust collecting bag
10. Circular saw blade mounting
11. Locking button
12. Circular saw blade guard
13. Locking lever for chamfer cutting
14. Locking lever for mitre cutting
15. Exhaust connection/dust bag connection

Guarantee
The guarantee solely covers inadequacies caused by material
defect or manufacturing defect.
Original payment voucher with the sales date needs to be
submitted for any claim in the guarantee period.
The guarantee does not cover any unauthorised use such as
appliance overloading, use of violence, damage as a result of
any unauthorised interference or caused by foreign items.
Failing to follow the operating and assembly instructions and
common wear are also not included in the guarantee.
Using the appliance as designated
The saw has exclusively been designed for cutting wooden
profiles with the cutting power specified in the technical
specifications.
Should provisions of generally applicable regulations or
provisions of these Operating Instructions not be adhered to,
the manufacturer shall not be liable for any damage incurred.
General Safety Instructions
Before you start working with the appliance please read
carefully the following safety regulations and Operating
Instructions. If any other person is to handle the appliance
provide him/her with the Operating Instructions. Keep the
Operating Instructions for future reference!
Package: The appliance has been put in a package to
prevent any damage during transport. Packages are raw
materials so they can be reused or recycled.
Please read carefully the Operating Instructions and follow
them. Use these Operating Instructions to get acquainted with
the appliance, its corresponding use and safety instructions.
Keep the Instructions for future reference.
•Get Familiar with Machine
Read this instruction manual carefully and note all the
warnings and precautions on the machine. Get familiar
with the use and limits of the machines and the risks
related thereto. Keep the instruction manual at a safe
place.
•Connect machines and devices to the ground
Although double protective insulation is provided on the
saw, regular electrical safety precautions should not be
ignored.
•Keep all the protective devices in working condition
and properly installed and adjusted.
•Remove any adjustment tools and aids!
Get used to check whether all the adjustment aids are
removed prior to switching the machine on.
•Keep your workplace tidy
Tools or materials cluttered around shall give rise to
accidents. Wax and sawdust make the floor slippery.
•Never work in endangered environment
Never use electrical tools in humid or wet areas and do
not expose them to rain. Provide for sufficient lighting
and sufficient room to move.
•Keep children away at reasonable distance
Any visitors should be kept at a reasonable distance
from your working area.
•Prevent children from access to your workshop
use padlocks, master switches or lockable switches on
the machines.
•Do not overload machine
You will do your job in a better and faster manner if the
machine is not overloaded.
•Use the right tools
Never get down to any job using tools or accessories not
designed for it.
•Wear proper working clothing
Do not wear any wide garments, gloves, ties or jewellery
that could get stuck in the rotating parts of the machine.
Pay attention to keep stable (no slipping shoes). If your
hair is long, wear a hairnet.
•Wear protective goggles
When working, you should always wear goggles
according to DIN 58214. Regular glasses will resist a
shock but they cannot be worn as a substitute for safety
goggles. Wear a dust protection mask when the job is
dusty and you should also have an ear protection when
working for prolonged periods.
•Secure material to be cut
To hold the material to be cut, use lighteners or a vice. It
is safer than holding the piece with a hand and both your
hands will be free to operate the saw.
•Care about your stable position
Avoid any position, in which you could lose balance.
•Be particular about the machine
Keep the machine clean and sharp. Follow the
manufacturer’s instructions for lubrication and parts
replacement
•Always disconnect machine from the source
Prior to any adjustment or maintenance unplug the
machine.
•Avoid any unintended switching
Before unplugging the machine, make sure that the
switch is in OFF position
•Use only recommended accessories
Follow the instructions attached to the accessories. Use
of improper accessories may be hazardous.
•Never stand atop the machine
That might result in serious injuries, if the machines rolls
over or if you accidentally touch the cutting tool. Never
store the material above the machine or next to it so that
you have to get on the machine when you want take it.
•Check all the parts of machine for damages
Prior to any use of the machine, you should carefully
check any protections and other parts of the machine to
see whether they are still working to the full. Check the
machine for adjustment, easy run, cracks and other
defects that could impair the machine working
conditions. Any damaged part of the machine should be
immediately repaired or replaced.
•Do not leave the machine running unattended.
Switch the machine off and do not leave it until it
completely stops
•The appliance meets EN 61000-3-11 requirements and
is subject to special connection conditions. That means
that use on optionally selected connection points is
inadmissible.
•The appliance can lead to occasional voltage
fluctuations under unfavourable power conditions.
•The appliance is only designated to be used for
connection points not exceeding the maximum allowed
impedance of Zmax = 0,233 Ω.
•As a user, you must make sure your connection point on
which you want to use the appliance meets the above-
mentioned requirements – after agreement with your
electricity supplier if necessary.
Trimming Saw Safety Instructions
Steps to be taken prior to the first use:
•Assembly and installation
•Getting familiar with the function and correct operations
of the controls as follows:
•switch on/off
•upper and lower protective cover
•saw shaft and pushbutton on the hand grip lock
•skew setting of the saw head, stop clips and turning
table lock
•Read all the safety information and operating
instructions in this manual and take care to understand
it.
•Observe all the precautionary notices on the trimming
saw.

Before each use:
•Check the saw. If a part is missing, bent or
unserviceable for another reason, if there is a defect on
electrical equipment, switch the saw off and unplug it.
Prior to the following use, replace all the missing,
damaged or defective parts.
•Plan your job to have your eyes, hands, face and ears
protected at any time.
•Wear safety goggles meeting the requirements of DIN
58214. While the machine is in use, various particles
could get in your eyes and cause a permanent visual
impairment. You may buy the safety goggles at the place
where you bought the trimming saw. Using goggles not
in conformity with DIN 58214 may result in a serious
injury in result of a crack of the protection glass.
•When working on a dusty job, wear a dust-proof mask in
addition to the goggles.
•To prevent blocking of the saw disc in the kerfs or
throwing the cut material off:
•Select a saw disc matched to the specific job. Use this
trimming saw for wood and similar materials or soft
metals, such as aluminium.
•The arrow on the saw disc showing the rotation direction
should coincide with the arrow on the saw. The saw disc
teeth should direct downwards on the front of machine
•Make sure that the saw disc is sharp, undamaged and
properly set up. With the machine unplugged, push the
saw head downwards. Turn the saw disc with your hand
a check whether the movement is free. Turn the saw
head to the position at an angle of 45° and repeat the
check. If the disc drags at a place, the head should be
reset as described in Article 6 „Preparation Steps “
•Keep the saw disc and the saw disc flanges faces clean.
•Keep the saw disc and the saw disc flanges faces clean.
•The saw disc flanges should be fitted with the work
shoulder inwards (in the direction of the saw disc)
•The work shoulder side of the flange should tightly fit on
the saw disc flange.
•The flange screw should be fastened manually using a
socket spanner 13 mm.
•Make sure that all the attachment devices and locks are
tight and no component is allowed too much of free
travel.
•Never cut with free hand:
•Press the cut material down to the table and to the
stop all the time so that any swinging and turning is
prevented. No sawdust should collect under the cut
piece.
•Take steps to prevent any move of the piece after it is
cut through (e.g. if it does not touch the support with
its all surface
•For cutting pieces not abutting the plate with their all
surface, use supports, feeding aids or another
machine.
•Make sure that chips will fall away along the side of the
saw disc. If on the contrary, the chips could get stuck in
the disc and it would throw them off.
•Never cut several pieces at a time.
•Take special care when cutting large or very small
pieces or pieces difficult to handle.
•Use auxiliary supports (table, holders) for long
pieces that tend to fall down from the table when
unsupported.
•Never use this saw to cut pieces so small that they
cannot be safely held with hand if you put your
index finger on the stop outer edge.
•When cutting pieces of various profile, work so that
the material cannot slip and get jammed in the disc.
The pieces of various profiles should either attach
with all their surface areas or it is necessary to hold
them with a device that will prevent waggling,
turning or slipping during the course of cutting. .
•Round pieces, such as bars or tubes should be
held firmly otherwise, they would spin and there is a
risk of the disc getting stuck. Always clam round
pieces in a proper device.
•No nails or foreign matters should be left in the cut
pieces.
•The viewers should be kept at a safe distance from the
work area and the area behind the saw, where the
sawdust and chips go.
•Never switch the trimming saw before removing all the
things except for the piece to be cut and clamping
devices from the table.
•To prevent hearing deterioration, always wear ear
protectors when working for a longer time.
•To prevent being retracted in the disc,
1. Do not wear gloves
2. Put off any jewellery and wide garments.
3. If your hair is long, wear a hairnet.
4. Roll up the long sleeves above your elbows.
•Unplug the machine prior to any adjusting the end stop
or the saw head, replacement of the disc or accessories
and any other kind of maintenance in order to prevent
any accidents in result of unintentional switching on.
•Do not touch the metal pins of the plug when plugging in
to get protected from the electrical shock.
•Do not use the cable for pulling out the plug from the
socket.
Protect the cable against the high temperature, oil and
sharp edges.
•Never apply detergents or lubricants on this disc, which
still turning.
•To prevent fire, never operate the trimming saw close to
inflammable liquids, vapours or gases
•Avoid any accidents possibly resulting from the use of
improper accessories. Only recommended saw discs
should be used.
While the saw is running:
•Before the first cut, have the saw running idle for a while.
If you hear unusual sounds or feel strong vibrations,
switch the saw off, unplug and find out the cause. Do not
switch the saw on again before you find and remove the
cause.
•The cut off part should not be restricted in any way. Do
not touch it, do not hold it, do not clamp it and do not
place the end stop against it either. The cut off piece
should be able to move freely along the saw side. If you
prevent the motion in any way, it could get stuck and
thrown away with the rotating disc.
•Avoid any clumsy position of hands when your hands
could slip down or get stuck with the saw disc.
•Pay attention to the disc reaching full speed before
cutting.
•Switch the saw head at a speed so as to avoid any
motor overloading and blocking the disc.
•Before removing any jammed material switch the
machine off, let the disc stop and unplug the machine.
•With the cutting finished, hold the saw head pressed
down, release the switch and wait until the disc stops. It
is only then that you can move your hands.
Emergency Action
Apply the first aid adequate to the injury and get qualified
medical assistance as quickly as possible. Protect the injured
person from more accidents and calm him/her down.
For the sake of eventual accident, in accordance with DIN
13164, a workplace has to be fitted with a first-aid kit. It is
essential to replace any used material in the first-aid kit
immediately after it has been used. If you seek help, state
the following pieces of information:
1. Accident site
2. Accident type
3. Number of injured persons
4. Injury type(s)

Residual risks and protective measures
1. Mechanical residual risks:
•Cut, amputation:
A rotating circular saw blade may lead to serious cutting
injuries. Keep your hands in a safe distance from the circular
saw blade.
•Impact:
If the cut material is held in hand, the rotating circular
saw blade may throw it down and injure you! Secure
the cut material properly using a vice at all times!
2. Exposure to noise:
•Hearing damage:
Hearing may get damaged if the appliance is worked with
for a long time. Personal protective aids to prevent hearing
damage should always be worn.
3. Other risks:
•Thrown-off items or liquids:
Pieces of the cut material secured improperly may be
thrown off and cause injury as a result of circular saw
blade rotation. The cut material should always be secured
and protective glasses worn.
Disposal
Disposal instructions are given by pictographs on the unit or
packaging. For meaning of individual symbols refer to chapter
“Symbols on Unit”.
Operator Requirements
The operator shall read the instruction manual carefully
before using the unit.
Qualification
No special qualification is required for use of the unit except
for detailed direction by a professional.
Minimum Age
Only persons above 18 years of age are allowed to work with
the unit. Exempted from the provision is the use of the
juvenile trainees if they work in the course of their
professional training with an aim to obtain the skill under a
trainer supervision.
Training
Use of the unit requires adequate lesson by a professional or
the use of the manual only. Special training is not required.
Technical Data
MITRE-BOX SAW GRK 250/300 #55003
Voltage/Frequency: 230 V~50 Hz
Motor Capacity: 1900 W
Saw disc - Ø: 250 x 20
Saw disc speed: 5000 rpm.
Cutting width at 90°(max): 70 x 305 mm
Cutting width at 45° (max): 40 x 205 mm
Noise level LWA: 107 dB
Weight including support: 20,5 kg
Weight without support: 18,5 kg
MITRE-BOX SAW GRK 250/500 #55004
Voltage/Frequency: 230 V~50 Hz
Motor Capacity: 1900 W
Saw disc - Ø: 250 x 20
Saw disc speed: 5000 rpm.
Cutting width at 90°(max): 70 x 500 mm
Cutting width at 45° (max): 40 x 350 mm
Noise level LWA: 107 dB
Weight: 20 kg
MITRE-BOX SAW GRK 210/300 #55006
Voltage/Frequency: 230 V~50 Hz
Motor Capacity: 1900 W
Saw disc - Ø: 210 x 30
Saw disc speed: 5000 rpm.
Cutting width at 90°(max): 60 x 310 mm
Cutting width at 45° (max): 35 x 210 mm
Noise level LWA: 107 dB
Weight: 13,5 kg
Transport and storage
If the appliance has not been used for a long time, unplug it
and keep it in a place inaccessible to children.
Make sure such place is dry and safe.
Cable Cross-section
Cable length Required Cross-section:
to 15 m 1,5 mm²
15 – 40 m 2,5 mm²
If the supply cables are too long while the cross-section of
them is small, the voltage drops, which may cause the motor
difficulties. Therefore, a supply cable of sufficient cross-
section is required for the saw to work perfectly. The cables
length show in the table applies to the distance between the
switchboard/fuse box and the trimming saw plug. It is of no
relevance then whether a supply and an extension cables are
combine or it is a supply cable alone.
Glossary of Terms
•Saw Shaft
the shaft, which the saw disc is attached to.
•Cross cut
Cutting across the grain.
•Skew Cut
Cutting not at right angle to the cut piece surface
•Bevel Square Cut
Cutting not at right angle to the cut piece front edge
•Double Bevel Square Cut
bevel and skew cut combination
•Revolutions per minute
Revolutions done by a rotating object per one minute .
•Cutting line
Line on a piece to be cut off on the saw table directly
aligned with the saw disc, which applies also to the part
already cut away.
•Spring Set
Dimension, by which the saw tooth tip is kicked up away
outside the saw disc body width.
•Saw Kerfs
A kerf formed by the rotating saw disc in the material cut.
•Improper Angular Adjustment
Saw disc maladjustment.
•Resin (resin ingredient)
Dried resin in wood .
•Material to be Cut
An object being cut .
Support assembly
Support assembly: see pic. 7 (#55003)
Fixing the saw in the place of work
The saw can be used as both a mobile and stationery
appliance.
If used as a stationary appliance, it must be screwed down to
the work-table or workbench using appropriate holes.

A vacuum cleaner with a common hose connection may also
be fitted on the exhaust neck instead of the dust bag. (15)
Safety instructions for the operator
The saw must not be used for other materials than those
described in the Operating Instructions.
•Use the appliance only after you have thoroughly
read the Operating Instructions.
•Follow all safety instructions specified in this
manual.
•Behave responsibly to other persons.
Procedure
Switch on the trimming saw using the switch on the handgrip
inner side.
Before cutting, the saw disc should be turning at a maximum
speed. Hold the handgrip of the work head and put it on
slowly. Take care to have switching even without any jerky
movements. Exert pressure adequate to the character and
dimension of the material to be cut in the direction of the saw
disc travel. The piece to be cut should be firmly pushed
against the clamping plate. Additional supports should be
used to enable safe cutting of long pieces.
Upon the cut being completed, steer the head back to the
initial position and check the saw disc cover for correct
position. Sharpen the saw discs regularly and replace then
when necessary.
NOTICE: Never use saw discs if damaged.
Handling (Pic. 1, 3)
Never perform adjustment work when the appliance
is running. The appliance must always be unplugged
before adjusting! Risk of serious injury.
Skew cut
For skew cuts up to 45°, the lock lever on the rear side of the
machine (13) should be released.
Skew the head of the machine from the left to the required
angle or to the end stop (45°) and then lock it with the lever
(13).
Scarf cut
The machine head at 45° may be turned to the right and the
left. Smaller angles may be set easily by deducting the
required value on the scale on the table. Release the lock
screw (14), turn the machine head (grid table) to the
required position and fix it in required position using the lock
screw (14).
Combination Cut (horizontal and vertical up to 45°)
Saw cuts combinations:
Saw Disc Replacement (Fig. 2, 3, 4)
CAUTION: Get down to the replacement only with the
saw unplugged and the saw disc at standstill!
Unscrew (H), release (G) and remove the handgrip with the
movable saw disc cover
Lock the saw disc using lock knob j(l).
•Release the saw disc screw (J) in clockwise direction
using a socket spanner (left-hand thread). Remove the
saw disc and replace with a new one, the teeth
inclination should coincide with the direction of the arrow
on casing.
Before fitting in the saw disc, carefully clean the saw disc
flange. Slip the saw disc external flange on the shaft,
screw the lock screw on (left-hand thread) and fasten in
place. The re-fit the saw disc cover. Prior to connecting
to the mains, test the idle run by lifting and dropping the
work head.
Step by step instructions
•Draw the guiding direction on the cut piece.
•Put the cut piece on the work-table and adjust the
circular saw blade according to the mark when the
appliance is still.
•Now secure the cut piece using a clamp.
•Check again the circular saw blade position if matching
the mark.
•Switch the appliance on and perform the cut.
•Switch the appliance off and wait until the circular saw
blade completely stops.
•Remove the sawdust and take the cut piece away.
•If the saw has not been used for a long time, it must
necessarily be unplugged.
Failures - causes - removal
Failure Cause Removal
Cut angle
not matching
Saw head
position not OK To be adjusted based on instructions in the “Assembly
and first start-up“ chapter
Engine not
working Worn carbons, faulty switch Carbons to be replaced Repair by an expert
Inspections and maintenance
1. Have the repairs done by a skilled servicing technician
only. Only genuine spare parts should be used.
2. Protect the saw against wet and moisture conditions,
use it in dry areas only.
Maintenance (brushes and collector)
It is recommended that you turn to a specialised servicing
place for the brushes replacement and have the collector
maintained on the occasion to provide for a perfect function of
the motor.
Lubrication
All the motor bearings are lubricated sufficiently for the entire
service life of the saw subject to normal conditions of
operation. Maintenance is not required.
Lubrication in Case of Necessity:
1. Rotation axle lubrication if the run gets tight
1.1 Loosen the set nut a put a few drops of the lubricant oil
on the washer and the contact area.
1.2 Remove it and lubricate the rotating axle and contact
areas. NOTICE: Before removing the axle, the saw disc
top cover and the end stop upper part have to be
removed first. The job should be accomplished by a
skilled servicing technician. Mind the position of both the
spring’s ends in the case. Mark it with a piece of chalk to
facilitate re-installation.
2. To provide silent and easy run of the swinging
protective cover control lever, all the metal and plastic
contact areas should be slightly lubricated with sewing
machines oil now and then. Take care not too use
excessive amount of the oil. Sawdust tends to deposit in
the excessive oil and form hard spots.
NOTICE: „Unplug the machine prior to any adjustment or
maintenance. “

Handling Motor
Caution: To avoid any damage of the motor, clean it
(cooling) of the sawdust and dust regularly.
1. Connect the saw to the mains of 230V secured with a 16
A fuse and a protective undercurrent switch. Poor
protection may cause a damage to the motor.
2. If the motor does not start immediately, let the switch go.
UNPLUG .
Check the saw disc for easy run. If it is does run easily,
try restarting again.
3. When the motor stops sudden while cutting is in
progress, push the switch off and unplug the machine.
Release the saw disc from the material cut. Afterwards,
you may finish the job. .
4. Fuses or protection switches may respond to conditions
as follows:
a. THE MOTOR IS OVERLOADED. If the saw
disc is immersed in the material too fast or if the
saw is switched on and off too often, it may
result in the motor overloading or a fault on the
gear.
b. Fluctuations of the mains voltage within a range
of ±10% will not pose any risk to normal
operation of the saw. However, if the load is too
high, the voltage on the motor connection
terminals should correspond to the plate data.
5. Many problems of the motor may be caused by loosen
or defective connectors, overloading, undervoltage (the
latter may result from too small cross-section of supply
cables). Always check all the connections, voltage value
and the current consumed.
EU Declaration of Conformity
We,
Güde GmbH & Co. KG
Birkichstraße 6
74549 Wolpertshausen
Germany,
hereby declare the conception and construction of the below-
mentioned appliances correspond - at the type of construction
being launched - to appropriate basic safety and hygienic
requirements of EC Directives. In case of any change to the
appliance not discussed with us the Declaration expires.
Marking of appliances:
MITRE-BOX SAW GRK 250/300 #55003
MITRE-BOX SAW GRK 250/500 #55004
MITRE-BOX SAW GRK 210/300 #55006
Order No.:
#55003
#55004
#55006
Appropriate EU Directives:
2006/42 EG
2004/108 EG
Harmonised standards used:
EN 61029-1:2009
EN 61029-2-9:2002
EN 55014-2/A1:2001
EN 61000-3-11:2000*
EN 61000-3-2/A2:2005 (#55003)
EN 55014-1/A2:2002 (#55003)
EN 55014-1:2006 (#55004, #55006)
EN 61000-3-2:2006 (#55004, #55006)
Date/producer signature: 29.04.2011
Signed by: Mr. Arnold, Managing Director
Technical Documentation: J. Bürkle; FBL, QS